New: "bad pmd" on fork() of process with hugepage shared memory segments attached
A message that is not in the archive (sent off-list or not yet received): [email protected]/
Andrew Morton
maintainer(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface).
(Please read this ^^^^ !)
Quoted 23 lines · On Wed, 13 May 2009 19:54:10 GMT [email protected] wrote:
http://bugzilla.kernel.org/show_bug.cgi?id=13302
Summary: "bad pmd" on
fork()of process with hugepage shared
memory segments attached
Product: Memory Management
Version: 2.5
Kernel Version: 2.6.29.1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: YesKernel reports "bad pmd" errors when process with hugepage shared memory segments attached executes
fork()system call. Usingvfork()avoids the issue.
Quoted 8 lines
Bug also appears in RHEL5 2.6.18-128.1.6.el5 and causes leakage of huge pages.
Bug does not appear in RHEL4 2.6.9-78.0.13.ELsmp.
See bug 12134 for an example of the errors reported by 'dmesg'.
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Quoted 40 lines · Andrew Morton
(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface).
(Please read this ^^^^ !)
Quoted 31 lines · On Wed, 13 May 2009 19:54:10 GMT [email protected] wrote:
http://bugzilla.kernel.org/show_bug.cgi?id=13302
Summary: "bad pmd" on
fork()of process with hugepage shared
memory segments attached
Product: Memory Management
Version: 2.5
Kernel Version: 2.6.29.1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: YesKernel reports "bad pmd" errors when process with hugepage shared memory segments attached executes
fork()system call. Usingvfork()avoids the issue.Bug also appears in RHEL5 2.6.18-128.1.6.el5 and causes leakage of huge pages.
Bug does not appear in RHEL4 2.6.9-78.0.13.ELsmp.
See bug 12134 for an example of the errors reported by 'dmesg'.
This seems familiar and I believe it couldn't be reproduced the last time and then the problem reporter went away. We need a reproduction case so I modified on of the libhugetlbfs tests to do what I think you described above. However, it does not trigger the problem for me on x86 or x86-64 running 2.6.29.1.
[email protected], can you try the reproduction steps on your system please? If it reproduces, can you send me your .config please? If it does not reproduce, can you look at the test program and tell me what it's doing different to your reproduction case?
1. wget http://heanet.dl.sourceforge.net/sourceforge/libhugetlbfs/libhugetlbfs-2.3.tar.gz
2. tar -zxf libhugetlbfs-2.3.tar.gz
3. cd libhugetlbfs-2.3
4. wget http://www.csn.ul.ie/~mel/shm-fork.c (program is below for reference)
5. mv shm-fork.c tests/
6. make
7. ./obj/hugeadm --create-global-mounts
8. ./obj/hugeadm --pool-pages-min 2M:20
(Adjust pagesize of 2M if necessary. If x86 and not 2M, tell me
and send me your .config)
9. ./tests/obj32/shm-fork 10 2
On my two systems, I saw something like
# ./tests/obj32/shm-fork 10 2 Starting testcase "./tests/obj32/shm-fork", pid 3527 Requesting 4194304 bytes for each test Spawning children glibc_fork:..........glibc_fork Spawning children glibc_vfork:..........glibc_vfork Spawning children sys_fork:..........sys_fork PASS
Test program I used is below and is a modified version of what's in libhugetlbfs. It does not compile standalone. The steps it takes are
1. Gets the hugepage size
2. Calls shmget() to create a suitably large shared memory segment
3. Creates a requested number of children
4. Each child attaches to the share memory segment
5. Each child creates a grandchild
6. The child and grandchildren write the segment 7. The grandchild exists, the child waits for the grandchild 8. The child detaches and exists
9. The parent waits for the child to exit
It does this for glibc fork, glibc vfork and a direct call to the system call fork().
Thanks
==== CUT HERE ====
/*
* libhugetlbfs - Easy use of Linux hugepages
* Copyright (C) 2005-2006 David Gibson & Adam Litke, IBM Corporation. *
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <syscall.h>
#include <sys/types.h>
#include <sys/shm.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <hugetlbfs.h>
#include "hugetests.h"
#define P "shm-fork"
#define DESC \ "* Test shared memory behavior when multiple threads are attached *\n"\ "* to a segment. A segment is created and then children are *\n"\ "* spawned which attach, write, read (verify), and detach from the *\n"\ "* shared memory segment. *"
extern int errno;
/* Global Configuration */
static int nr_hugepages;
static int numprocs;
static int shmid = -1;
#define MAX_PROCS 200
#define BUF_SZ 256
#define GLIBC_FORK 0
#define GLIBC_VFORK 1
#define SYS_FORK 2
static char *testnames[] = { "glibc_fork", "glibc_vfork", "sys_fork" };
#define CHILD_FAIL(thread, fmt, ...) \
do { \
verbose_printf("Thread %d (pid=%d) FAIL: " fmt, \
thread, getpid(), __VA_ARGS__); \
exit(1); \
} while (0)void cleanup(void)
{
remove_shmid(shmid);
}static void do_child(int thread, unsigned long size, int testtype)
{
volatile char *shmaddr;
int j, k;
int pid, status;
verbose_printf(".");
for (j=0; j<5; j++) {
shmaddr = shmat(shmid, 0, SHM_RND);
if (shmaddr == MAP_FAILED)
CHILD_FAIL(thread, "shmat() failed: %s",
strerror(errno));
/* Create even more children to double up the work */
switch (testtype) {
case GLIBC_FORK:
if ((pid = fork()) < 0)
FAIL("glibc_fork(): %s", strerror(errno));
break;
case GLIBC_VFORK:
if ((pid = vfork()) < 0)
FAIL("glibc_vfork(): %s", strerror(errno));
break;
case SYS_FORK:
if ((pid = syscall(__NR_fork)) < 0)
FAIL("sys_fork(): %s", strerror(errno));
break;
default:
FAIL("Test type %d not implemented\n", testtype);
}
/* Child and parent access the shared area */
for (k=0;k<size;k++)
shmaddr[k] = (char) (k);
for (k=0;k<size;k++)
if (shmaddr[k] != (char)k)
CHILD_FAIL(thread, "Index %d mismatch", k);
/* Children exits */
if (pid == 0)
exit(0);
/* Parent waits for child and detaches */
waitpid(pid, &status, 0);
if (shmdt((const void *)shmaddr) != 0)
CHILD_FAIL(thread, "shmdt() failed: %s",
strerror(errno));
}
exit(0);
}static void do_test(unsigned long size, int testtype)
{
int wait_list[MAX_PROCS];
int i;
int pid, status;
char *testname = testnames[testtype];
if ((shmid = shmget(2, size, SHM_HUGETLB|IPC_CREAT|SHM_R|SHM_W )) < 0)
FAIL("shmget(): %s", strerror(errno));
verbose_printf("Spawning children %s:", testname);
for (i=0; i<numprocs; i++) {
switch (testtype) {
case GLIBC_FORK:
if ((pid = fork()) < 0)
FAIL("glibc_fork(): %s", strerror(errno));
break;
case GLIBC_VFORK:
if ((pid = vfork()) < 0)
FAIL("glibc_vfork(): %s", strerror(errno));
break;
case SYS_FORK:
if ((pid = syscall(__NR_fork)) < 0)
FAIL("sys_fork(): %s", strerror(errno));
break;
default:
FAIL("Test type %d not implemented\n", testtype);
}
if (pid == 0)
do_child(i, size, testtype);
wait_list[i] = pid;
}
for (i=0; i<numprocs; i++) {
waitpid(wait_list[i], &status, 0);
if (WEXITSTATUS(status) != 0)
FAIL("Thread %d (pid=%d) failed", i, wait_list[i]);
if (WIFSIGNALED(status))
FAIL("Thread %d (pid=%d) received unhandled signal",
i, wait_list[i]);
}
printf("%s\n", testname);
}int main(int argc, char ** argv)
{
unsigned long size;
long hpage_size;
test_init(argc, argv);
if (argc < 3)
CONFIG("Usage: %s <# procs> <# pages>", argv[0]);
numprocs = atoi(argv[1]);
nr_hugepages = atoi(argv[2]);
if (numprocs > MAX_PROCS)
CONFIG("Cannot spawn more than %d processes", MAX_PROCS);
check_hugetlb_shm_group();
hpage_size = check_hugepagesize();
size = hpage_size * nr_hugepages;
verbose_printf("Requesting %lu bytes for each test\n", size);
do_test(size, GLIBC_FORK);
do_test(size, GLIBC_VFORK);
do_test(size, SYS_FORK);
PASS();
}--
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Quoted 48 lines · Mel Gorman
Quoted 40 lines · Andrew Morton
(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface).
(Please read this ^^^^ !)
Quoted 31 lines · On Wed, 13 May 2009 19:54:10 GMT [email protected] wrote:
http://bugzilla.kernel.org/show_bug.cgi?id=13302
Summary: "bad pmd" on
fork()of process with hugepage shared
memory segments attached
Product: Memory Management
Version: 2.5
Kernel Version: 2.6.29.1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: YesKernel reports "bad pmd" errors when process with hugepage shared memory segments attached executes
fork()system call. Usingvfork()avoids the issue.Bug also appears in RHEL5 2.6.18-128.1.6.el5 and causes leakage of huge pages.
Bug does not appear in RHEL4 2.6.9-78.0.13.ELsmp.
See bug 12134 for an example of the errors reported by 'dmesg'.
This seems familiar and I believe it couldn't be reproduced the last time and then the problem reporter went away. We need a reproduction case so I modified on of the libhugetlbfs tests to do what I think you described above. However, it does not trigger the problem for me on x86 or x86-64 running 2.6.29.1.
Quoted 5 lines
[email protected], can you try the reproduction steps on your system please? If it reproduces, can you send me your .config please? If it does not reproduce, can you look at the test program and tell me what it's doing different to your reproduction case?
Another question on top of this.
At any point, do you call madvise(MADV_WILLNEED), fadvise(FADV_WILLNEED) or readahead() on the share memory segment?
Signature · 9 lines
Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to [email protected]. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"[email protected]"> [email protected] </a>
Definately no.
The possibly unusual thing done is that a file is read into something like 30% of the segment, and the remaining pages are not touched.
Quoted 4 lines · Mel Gorman
Another question on top of this.
At any point, do you call
madvise(MADV_WILLNEED),fadvise(FADV_WILLNEED)orreadahead()on the share memory segment?
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Quoted 12 lines · On Thu, May 14, 2009 at 01:20:09PM -0400, [email protected] wrote:
Quoted 4 lines · Mel Gorman
Another question on top of this.
At any point, do you call
madvise(MADV_WILLNEED),fadvise(FADV_WILLNEED)orreadahead()on the share memory segment?Definately no.
The possibly unusual thing done is that a file is read into something like 30% of the segment, and the remaining pages are not touched.
Ok, I just tried that there - parent writing 30% of the shared memory before forking but still did not reproduce the problem :(
Signature · 9 lines
Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to [email protected]. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"[email protected]"> [email protected] </a>
Quoted 2 lines · Mel Gorman
Ok, I just tried that there - parent writing 30% of the shared memory before forking but still did not reproduce the problem :(
Maybe it makes a difference to have lots of RAM (16GB on this server), and about 1.5 GB of hugepage shared memory allocated in the forking process in about four segments. Often have all free memory consumed by the file cache, but I don't belive this is necessary to produce the problem as it will happen even right after a reboot. [RHEL5 meminfo attached]
Other possible factors:
daemon is non-root but has explicit
CAP_IPC_LOCK, CAP_NET_RAW, CAP_SYS_NICE set via 'setcap cap_net_raw,cap_ipc_lock,cap_sys_nice+ep daemon'
ulimit -Hl and -Sl are set to <unlimited>
process group is set in /proc/sys/vm/hugetlb_shm_group /proc/sys/vm/nr_hugepages is set to 2048
daemon has 200 threads at time of fork()
shared memory segments explictly located [RHEL5 pmap -x attached] between fork & exec these syscalls are issued
sched_getscheduler/sched_setscheduler getpriority/setpriority
seteuid(getuid())
setegid(getgid())
with vfork() work-around, no syscalls are made before exec()
Don't think it's something anything specific to the DL160 (Intel E5430) we have because the DL165 (Opteron 2354) also exhibits the problem.
Will run the test cases provided this weekend for certain and will let you know if bug is reproduced.
Have to go silent on this till the weekend.
MemTotal: 16443828 kB MemFree: 105364 kB Buffers: 8476 kB Cached: 11626260 kB SwapCached: 0 kB Active: 121876 kB Inactive: 11570788 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 16443828 kB LowFree: 105364 kB SwapTotal: 2031608 kB SwapFree: 2031396 kB Dirty: 417224 kB Writeback: 0 kB AnonPages: 62700 kB Mapped: 10640 kB Slab: 416872 kB PageTables: 1904 kB NFS_Unstable: 0 kB Bounce: 0 kB CommitLimit: 8156368 kB Committed_AS: 71692 kB VmallocTotal: 34359738367 kB VmallocUsed: 266280 kB VmallocChunk: 34359471371 kB HugePages_Total: 2048 HugePages_Free: 889 HugePages_Rsvd: 0 Hugepagesize: 2048 kB Address Kbytes RSS Anon Locked Mode Mapping 0000000000400000 2976 - - - r-x-- daemon 00000000007e8000 8 - - - rw--- daemon 00000000007ea000 192 - - - rw--- [ anon ] 000000001546d000 9228 - - - rw--- [ anon ] 0000000040955000 4 - - - ----- [ anon ] 0000000040956000 128 - - - rw--- [ anon ] 0000000040976000 4 - - - ----- [ anon ] 0000000040977000 128 - - - rw--- [ anon ] 0000000040997000 4 - - - ----- [ anon ] 0000000040998000 128 - - - rw--- [ anon ] 00000000409b8000 4 - - - ----- [ anon ] 00000000409b9000 128 - - - rw--- [ anon ] 000000004193a000 4 - - - ----- [ anon ] 000000004193b000 128 - - - rw--- [ anon ] 000000004195b000 4 - - - ----- [ anon ] 000000004195c000 128 - - - rw--- [ anon ] 000000004197c000 4 - - - ----- [ anon ] 000000004197d000 128 - - - rw--- [ anon ] 000000004199d000 4 - - - ----- [ anon ] 000000004199e000 128 - - - rw--- [ anon ] 00000000419be000 4 - - - ----- [ anon ] 00000000419bf000 128 - - - rw--- [ anon ] 00000000419df000 4 - - - ----- [ anon ] 00000000419e0000 128 - - - rw--- [ anon ] 0000000041a00000 4 - - - ----- [ anon ] 0000000041a01000 128 - - - rw--- [ anon ] 0000000041a21000 4 - - - ----- [ anon ] 0000000041a22000 128 - - - rw--- [ anon ] 0000000041a42000 4 - - - ----- [ anon ] 0000000041a43000 128 - - - rw--- [ anon ] 0000000041a63000 4 - - - ----- [ anon ] 0000000041a64000 128 - - - rw--- [ anon ] 0000000041a84000 4 - - - ----- [ anon ] 0000000041a85000 128 - - - rw--- [ anon ] 0000000041aa5000 4 - - - ----- [ anon ] 0000000041aa6000 128 - - - rw--- [ anon ] 0000000041ac6000 4 - - - ----- [ anon ] 0000000041ac7000 128 - - - rw--- [ anon ] 0000000041ae7000 4 - - - ----- [ anon ] 0000000041ae8000 128 - - - rw--- [ anon ] 0000000041b08000 4 - - - ----- [ anon ] 0000000041b09000 128 - - - rw--- [ anon ] 0000000041b29000 4 - - - ----- [ anon ] 0000000041b2a000 128 - - - rw--- [ anon ] 0000000041b4a000 4 - - - ----- [ anon ] 0000000041b4b000 128 - - - rw--- [ anon ] 0000000041b6b000 4 - - - ----- [ anon ] 0000000041b6c000 128 - - - rw--- [ anon ] 0000000041b8c000 4 - - - ----- [ anon ] 0000000041b8d000 128 - - - rw--- [ anon ] 0000000041bad000 4 - - - ----- [ anon ] 0000000041bae000 128 - - - rw--- [ anon ] 0000000041bce000 4 - - - ----- [ anon ] 0000000041bcf000 128 - - - rw--- [ anon ] 0000000041bef000 4 - - - ----- [ anon ] 0000000041bf0000 128 - - - rw--- [ anon ] 0000000041c10000 4 - - - ----- [ anon ] 0000000041c11000 128 - - - rw--- [ anon ] 0000000041c31000 4 - - - ----- [ anon ] 0000000041c32000 128 - - - rw--- [ anon ] 0000000041c52000 4 - - - ----- [ anon ] 0000000041c53000 128 - - - rw--- [ anon ] 0000000041c73000 4 - - - ----- [ anon ] 0000000041c74000 128 - - - rw--- [ anon ] 0000000041c94000 4 - - - ----- [ anon ] 0000000041c95000 128 - - - rw--- [ anon ] 0000000041cb5000 4 - - - ----- [ anon ] 0000000041cb6000 128 - - - rw--- [ anon ] 0000000041cd6000 4 - - - ----- [ anon ] 0000000041cd7000 128 - - - rw--- [ anon ] 0000000041cf7000 4 - - - ----- [ anon ] 0000000041cf8000 128 - - - rw--- [ anon ] 0000000041d18000 4 - - - ----- [ anon ] 0000000041d19000 128 - - - rw--- [ anon ] 0000000041d39000 4 - - - ----- [ anon ] 0000000041d3a000 128 - - - rw--- [ anon ] 0000000041d5a000 4 - - - ----- [ anon ] 0000000041d5b000 128 - - - rw--- [ anon ] 0000000041d7b000 4 - - - ----- [ anon ] 0000000041d7c000 128 - - - rw--- [ anon ] 0000000041d9c000 4 - - - ----- [ anon ] 0000000041d9d000 128 - - - rw--- [ anon ] 0000000041dbd000 4 - - - ----- [ anon ] 0000000041dbe000 128 - - - rw--- [ anon ] 0000000041dde000 4 - - - ----- [ anon ] 0000000041ddf000 128 - - - rw--- [ anon ] 0000000041dff000 4 - - - ----- [ anon ] 0000000041e00000 128 - - - rw--- [ anon ] 0000000041e20000 4 - - - ----- [ anon ] 0000000041e21000 128 - - - rw--- [ anon ] 0000000041e41000 4 - - - ----- [ anon ] 0000000041e42000 128 - - - rw--- [ anon ] 0000000041e62000 4 - - - ----- [ anon ] 0000000041e63000 128 - - - rw--- [ anon ] 0000000041e83000 4 - - - ----- [ anon ] 0000000041e84000 128 - - - rw--- [ anon ] 0000000041ea4000 4 - - - ----- [ anon ] 0000000041ea5000 128 - - - rw--- [ anon ] 0000000041ec5000 4 - - - ----- [ anon ] 0000000041ec6000 128 - - - rw--- [ anon ] 0000000041ee6000 4 - - - ----- [ anon ] 0000000041ee7000 128 - - - rw--- [ anon ] 0000000041f07000 4 - - - ----- [ anon ] 0000000041f08000 128 - - - rw--- [ anon ] 0000000041f28000 4 - - - ----- [ anon ] 0000000041f29000 128 - - - rw--- [ anon ] 0000000041f49000 4 - - - ----- [ anon ] 0000000041f4a000 128 - - - rw--- [ anon ] 0000000041f6a000 4 - - - ----- [ anon ] 0000000041f6b000 128 - - - rw--- [ anon ] 0000000041f8b000 4 - - - ----- [ anon ] 0000000041f8c000 128 - - - rw--- [ anon ] 0000000041fac000 4 - - - ----- [ anon ] 0000000041fad000 128 - - - rw--- [ anon ] 0000000041fcd000 4 - - - ----- [ anon ] 0000000041fce000 128 - - - rw--- [ anon ] 0000000041fee000 4 - - - ----- [ anon ] 0000000041fef000 128 - - - rw--- [ anon ] 000000004200f000 4 - - - ----- [ anon ] 0000000042010000 128 - - - rw--- [ anon ] 0000000042030000 4 - - - ----- [ anon ] 0000000042031000 128 - - - rw--- [ anon ] 0000000042051000 4 - - - ----- [ anon ] 0000000042052000 128 - - - rw--- [ anon ] 0000000042072000 4 - - - ----- [ anon ] 0000000042073000 128 - - - rw--- [ anon ] 0000000042093000 4 - - - ----- [ anon ] 0000000042094000 128 - - - rw--- [ anon ] 00000000420b4000 4 - - - ----- [ anon ] 00000000420b5000 128 - - - rw--- [ anon ] 00000000420d5000 4 - - - ----- [ anon ] 00000000420d6000 128 - - - rw--- [ anon ] 00000000420f6000 4 - - - ----- [ anon ] 00000000420f7000 128 - - - rw--- [ anon ] 0000000042117000 4 - - - ----- [ anon ] 0000000042118000 128 - - - rw--- [ anon ] 0000000042138000 4 - - - ----- [ anon ] 0000000042139000 128 - - - rw--- [ anon ] 0000000042159000 4 - - - ----- [ anon ] 000000004215a000 128 - - - rw--- [ anon ] 000000004217a000 4 - - - ----- [ anon ] 000000004217b000 128 - - - rw--- [ anon ] 000000004219b000 4 - - - ----- [ anon ] 000000004219c000 128 - - - rw--- [ anon ] 00000000421bc000 4 - - - ----- [ anon ] 00000000421bd000 128 - - - rw--- [ anon ] 00000000421dd000 4 - - - ----- [ anon ] 00000000421de000 128 - - - rw--- [ anon ] 00000000421fe000 4 - - - ----- [ anon ] 00000000421ff000 128 - - - rw--- [ anon ] 000000004221f000 4 - - - ----- [ anon ] 0000000042220000 128 - - - rw--- [ anon ] 0000000042240000 4 - - - ----- [ anon ] 0000000042241000 128 - - - rw--- [ anon ] 0000000042261000 4 - - - ----- [ anon ] 0000000042262000 128 - - - rw--- [ anon ] 0000000042282000 4 - - - ----- [ anon ] 0000000042283000 128 - - - rw--- [ anon ] 00000000422a3000 4 - - - ----- [ anon ] 00000000422a4000 128 - - - rw--- [ anon ] 00000000422c4000 4 - - - ----- [ anon ] 00000000422c5000 128 - - - rw--- [ anon ] 00000000422e5000 4 - - - ----- [ anon ] 00000000422e6000 128 - - - rw--- [ anon ] 0000000042306000 4 - - - ----- [ anon ] 0000000042307000 128 - - - rw--- [ anon ] 0000000042327000 4 - - - ----- [ anon ] 0000000042328000 128 - - - rw--- [ anon ] 0000000042348000 4 - - - ----- [ anon ] 0000000042349000 128 - - - rw--- [ anon ] 0000000042369000 4 - - - ----- [ anon ] 000000004236a000 128 - - - rw--- [ anon ] 000000004238a000 4 - - - ----- [ anon ] 000000004238b000 128 - - - rw--- [ anon ] 00000000423ab000 4 - - - ----- [ anon ] 00000000423ac000 128 - - - rw--- [ anon ] 00000000423cc000 4 - - - ----- [ anon ] 00000000423cd000 128 - - - rw--- [ anon ] 00000000423ed000 4 - - - ----- [ anon ] 00000000423ee000 128 - - - rw--- [ anon ] 000000004240e000 4 - - - ----- [ anon ] 000000004240f000 128 - - - rw--- [ anon ] 000000004242f000 4 - - - ----- [ anon ] 0000000042430000 128 - - - rw--- [ anon ] 0000000042450000 4 - - - ----- [ anon ] 0000000042451000 128 - - - rw--- [ anon ] 0000000042471000 4 - - - ----- [ anon ] 0000000042472000 128 - - - rw--- [ anon ] 0000000042492000 4 - - - ----- [ anon ] 0000000042493000 128 - - - rw--- [ anon ] 00000000424b3000 4 - - - ----- [ anon ] 00000000424b4000 128 - - - rw--- [ anon ] 00000000424d4000 4 - - - ----- [ anon ] 00000000424d5000 128 - - - rw--- [ anon ] 00000000424f5000 4 - - - ----- [ anon ] 00000000424f6000 128 - - - rw--- [ anon ] 0000000042516000 4 - - - ----- [ anon ] 0000000042517000 128 - - - rw--- [ anon ] 0000000042537000 4 - - - ----- [ anon ] 0000000042538000 128 - - - rw--- [ anon ] 0000000042558000 4 - - - ----- [ anon ] 0000000042559000 128 - - - rw--- [ anon ] 0000000042579000 4 - - - ----- [ anon ] 000000004257a000 128 - - - rw--- [ anon ] 000000004259a000 4 - - - ----- [ anon ] 000000004259b000 128 - - - rw--- [ anon ] 00000000425bb000 4 - - - ----- [ anon ] 00000000425bc000 128 - - - rw--- [ anon ] 00000000425dc000 4 - - - ----- [ anon ] 00000000425dd000 128 - - - rw--- [ anon ] 00000000425fd000 4 - - - ----- [ anon ] 00000000425fe000 128 - - - rw--- [ anon ] 000000004261e000 4 - - - ----- [ anon ] 000000004261f000 128 - - - rw--- [ anon ] 000000004263f000 4 - - - ----- [ anon ] 0000000042640000 128 - - - rw--- [ anon ] 0000000042660000 4 - - - ----- [ anon ] 0000000042661000 128 - - - rw--- [ anon ] 0000000042681000 4 - - - ----- [ anon ] 0000000042682000 128 - - - rw--- [ anon ] 00000000426a2000 4 - - - ----- [ anon ] 00000000426a3000 128 - - - rw--- [ anon ] 00000000426c3000 4 - - - ----- [ anon ] 00000000426c4000 128 - - - rw--- [ anon ] 00000000426e4000 4 - - - ----- [ anon ] 00000000426e5000 128 - - - rw--- [ anon ] 0000000042705000 4 - - - ----- [ anon ] 0000000042706000 128 - - - rw--- [ anon ] 0000000042726000 4 - - - ----- [ anon ] 0000000042727000 128 - - - rw--- [ anon ] 0000000042747000 4 - - - ----- [ anon ] 0000000042748000 128 - - - rw--- [ anon ] 0000000042768000 4 - - - ----- [ anon ] 0000000042769000 128 - - - rw--- [ anon ] 0000000042789000 4 - - - ----- [ anon ] 000000004278a000 128 - - - rw--- [ anon ] 00000000427aa000 4 - - - ----- [ anon ] 00000000427ab000 128 - - - rw--- [ anon ] 00000000427cb000 4 - - - ----- [ anon ] 00000000427cc000 128 - - - rw--- [ anon ] 00000000427ec000 4 - - - ----- [ anon ] 00000000427ed000 128 - - - rw--- [ anon ] 000000004280d000 4 - - - ----- [ anon ] 000000004280e000 28 - - - rw--- [ anon ] 0000000042815000 4 - - - ----- [ anon ] 0000000042816000 28 - - - rw--- [ anon ] 000000004281d000 4 - - - ----- [ anon ] 000000004281e000 28 - - - rw--- [ anon ] 0000000042825000 4 - - - ----- [ anon ] 0000000042826000 28 - - - rw--- [ anon ] 000000004282d000 4 - - - ----- [ anon ] 000000004282e000 28 - - - rw--- [ anon ] 0000000042835000 4 - - - ----- [ anon ] 0000000042836000 28 - - - rw--- [ anon ] 000000004283d000 4 - - - ----- [ anon ] 000000004283e000 28 - - - rw--- [ anon ] 0000000042845000 4 - - - ----- [ anon ] 0000000042846000 28 - - - rw--- [ anon ] 000000004284d000 4 - - - ----- [ anon ] 000000004284e000 28 - - - rw--- [ anon ] 0000000300000000 524288 - - - rw-s- 9 (deleted) 0000000330000000 131072 - - - rw-s- 6 (deleted) 00000003c0000000 98304 - - - rw-s- 8 (deleted) 00000003d8000000 169984 - - - rw-s- 5 (deleted) 00000003f0000000 2048 - - - rw-s- 1 (deleted) 00000003f0400000 2048 - - - rw-s- 7 (deleted) 0000000400000000 1048576 - - - rw-s- 3 (deleted) 0000000580000000 262144 - - - rw-s- 4 (deleted) 0000000600000000 131072 - - - rw-s- 2 (deleted) 00000032d5400000 112 - - - r-x-- ld-2.5.so 00000032d561b000 4 - - - r---- ld-2.5.so 00000032d561c000 4 - - - rw--- ld-2.5.so 00000032d5800000 1328 - - - r-x-- libc-2.5.so 00000032d594c000 2048 - - - ----- libc-2.5.so 00000032d5b4c000 16 - - - r---- libc-2.5.so 00000032d5b50000 4 - - - rw--- libc-2.5.so 00000032d5b51000 20 - - - rw--- [ anon ] 00000032d6800000 520 - - - r-x-- libm-2.5.so 00000032d6882000 2044 - - - ----- libm-2.5.so 00000032d6a81000 4 - - - r---- libm-2.5.so 00000032d6a82000 4 - - - rw--- libm-2.5.so 00000032d6c00000 88 - - - r-x-- libpthread-2.5.so 00000032d6c16000 2044 - - - ----- libpthread-2.5.so 00000032d6e15000 4 - - - r---- libpthread-2.5.so 00000032d6e16000 4 - - - rw--- libpthread-2.5.so 00000032d6e17000 16 - - - rw--- [ anon ] 00000032d7000000 28 - - - r-x-- librt-2.5.so 00000032d7007000 2048 - - - ----- librt-2.5.so 00000032d7207000 4 - - - r---- librt-2.5.so 00000032d7208000 4 - - - rw--- librt-2.5.so 00002aaaac000000 132 - - - rw--- [ anon ] 00002aaaac021000 65404 - - - ----- [ anon ] 00002aaab0000000 132 - - - rw--- [ anon ] 00002aaab0021000 65404 - - - ----- [ anon ] 00002aaab4000000 132 - - - rw--- [ anon ] 00002aaab4021000 65404 - - - ----- [ anon ] 00002ad69510e000 4 - - - rw--- [ anon ] 00002ad695115000 4 - - - rw--- [ anon ] 00002ad695116000 944 - - - r-x-- libstdc++.so.6.0.10 00002ad695202000 1024 - - - ----- libstdc++.so.6.0.10 00002ad695302000 8 - - - r---- libstdc++.so.6.0.10 00002ad695304000 28 - - - rw--- libstdc++.so.6.0.10 00002ad69530b000 80 - - - rw--- [ anon ] 00002ad69531f000 88 - - - r-x-- libgcc_s.so.1 00002ad695335000 1020 - - - ----- libgcc_s.so.1 00002ad695434000 4 - - - rw--- libgcc_s.so.1 00002ad695435000 24776 - - - rw--- [ anon ] 00007fff1597d000 124 - - - rw--- [ stack ] ffffffffff600000 8192 - - - ----- [ anon ]
---------------- ------ ------ ------ ------
total kB 2641188 - - -
Quoted 2 lines · Mel Gorman
Ok, I just tried that there - parent writing 30% of the shared memory before forking but still did not reproduce the problem :(
Maybe it makes a difference to have lots of RAM (16GB on this server), and about 1.5 GB of hugepage shared memory allocated in the forking process in about four segments. Often have all free memory consumed by the file cache, but I don't belive this is necessary to produce the problem as it will happen even right after a reboot. [RHEL5 meminfo attached]
Other possible factors:
daemon is non-root but has explicit
CAP_IPC_LOCK, CAP_NET_RAW, CAP_SYS_NICE set via 'setcap cap_net_raw,cap_ipc_lock,cap_sys_nice+ep daemon'
ulimit -Hl and -Sl are set to <unlimited>
process group is set in /proc/sys/vm/hugetlb_shm_group /proc/sys/vm/nr_hugepages is set to 2048
daemon has 200 threads at time of fork()
shared memory segments explictly located [RHEL5 pmap -x attached] between fork & exec these syscalls are issued
sched_getscheduler/sched_setscheduler getpriority/setpriority
seteuid(getuid())
setegid(getgid())
with vfork() work-around, no syscalls are made before exec()
Don't think it's something anything specific to the DL160 (Intel E5430) we have because the DL165 (Opteron 2354) also exhibits the problem.
Will run the test cases provided this weekend for certain and will let you know if bug is reproduced.
Have to go silent on this till the weekend.
MemTotal: 16443828 kB MemFree: 105364 kB Buffers: 8476 kB Cached: 11626260 kB SwapCached: 0 kB Active: 121876 kB Inactive: 11570788 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 16443828 kB LowFree: 105364 kB SwapTotal: 2031608 kB SwapFree: 2031396 kB Dirty: 417224 kB Writeback: 0 kB AnonPages: 62700 kB Mapped: 10640 kB Slab: 416872 kB PageTables: 1904 kB NFS_Unstable: 0 kB Bounce: 0 kB CommitLimit: 8156368 kB Committed_AS: 71692 kB VmallocTotal: 34359738367 kB VmallocUsed: 266280 kB VmallocChunk: 34359471371 kB HugePages_Total: 2048 HugePages_Free: 889 HugePages_Rsvd: 0 Hugepagesize: 2048 kB Address Kbytes RSS Anon Locked Mode Mapping 0000000000400000 2976 - - - r-x-- daemon 00000000007e8000 8 - - - rw--- daemon 00000000007ea000 192 - - - rw--- [ anon ] 000000001546d000 9228 - - - rw--- [ anon ] 0000000040955000 4 - - - ----- [ anon ] 0000000040956000 128 - - - rw--- [ anon ] 0000000040976000 4 - - - ----- [ anon ] 0000000040977000 128 - - - rw--- [ anon ] 0000000040997000 4 - - - ----- [ anon ] 0000000040998000 128 - - - rw--- [ anon ] 00000000409b8000 4 - - - ----- [ anon ] 00000000409b9000 128 - - - rw--- [ anon ] 000000004193a000 4 - - - ----- [ anon ] 000000004193b000 128 - - - rw--- [ anon ] 000000004195b000 4 - - - ----- [ anon ] 000000004195c000 128 - - - rw--- [ anon ] 000000004197c000 4 - - - ----- [ anon ] 000000004197d000 128 - - - rw--- [ anon ] 000000004199d000 4 - - - ----- [ anon ] 000000004199e000 128 - - - rw--- [ anon ] 00000000419be000 4 - - - ----- [ anon ] 00000000419bf000 128 - - - rw--- [ anon ] 00000000419df000 4 - - - ----- [ anon ] 00000000419e0000 128 - - - rw--- [ anon ] 0000000041a00000 4 - - - ----- [ anon ] 0000000041a01000 128 - - - rw--- [ anon ] 0000000041a21000 4 - - - ----- [ anon ] 0000000041a22000 128 - - - rw--- [ anon ] 0000000041a42000 4 - - - ----- [ anon ] 0000000041a43000 128 - - - rw--- [ anon ] 0000000041a63000 4 - - - ----- [ anon ] 0000000041a64000 128 - - - rw--- [ anon ] 0000000041a84000 4 - - - ----- [ anon ] 0000000041a85000 128 - - - rw--- [ anon ] 0000000041aa5000 4 - - - ----- [ anon ] 0000000041aa6000 128 - - - rw--- [ anon ] 0000000041ac6000 4 - - - ----- [ anon ] 0000000041ac7000 128 - - - rw--- [ anon ] 0000000041ae7000 4 - - - ----- [ anon ] 0000000041ae8000 128 - - - rw--- [ anon ] 0000000041b08000 4 - - - ----- [ anon ] 0000000041b09000 128 - - - rw--- [ anon ] 0000000041b29000 4 - - - ----- [ anon ] 0000000041b2a000 128 - - - rw--- [ anon ] 0000000041b4a000 4 - - - ----- [ anon ] 0000000041b4b000 128 - - - rw--- [ anon ] 0000000041b6b000 4 - - - ----- [ anon ] 0000000041b6c000 128 - - - rw--- [ anon ] 0000000041b8c000 4 - - - ----- [ anon ] 0000000041b8d000 128 - - - rw--- [ anon ] 0000000041bad000 4 - - - ----- [ anon ] 0000000041bae000 128 - - - rw--- [ anon ] 0000000041bce000 4 - - - ----- [ anon ] 0000000041bcf000 128 - - - rw--- [ anon ] 0000000041bef000 4 - - - ----- [ anon ] 0000000041bf0000 128 - - - rw--- [ anon ] 0000000041c10000 4 - - - ----- [ anon ] 0000000041c11000 128 - - - rw--- [ anon ] 0000000041c31000 4 - - - ----- [ anon ] 0000000041c32000 128 - - - rw--- [ anon ] 0000000041c52000 4 - - - ----- [ anon ] 0000000041c53000 128 - - - rw--- [ anon ] 0000000041c73000 4 - - - ----- [ anon ] 0000000041c74000 128 - - - rw--- [ anon ] 0000000041c94000 4 - - - ----- [ anon ] 0000000041c95000 128 - - - rw--- [ anon ] 0000000041cb5000 4 - - - ----- [ anon ] 0000000041cb6000 128 - - - rw--- [ anon ] 0000000041cd6000 4 - - - ----- [ anon ] 0000000041cd7000 128 - - - rw--- [ anon ] 0000000041cf7000 4 - - - ----- [ anon ] 0000000041cf8000 128 - - - rw--- [ anon ] 0000000041d18000 4 - - - ----- [ anon ] 0000000041d19000 128 - - - rw--- [ anon ] 0000000041d39000 4 - - - ----- [ anon ] 0000000041d3a000 128 - - - rw--- [ anon ] 0000000041d5a000 4 - - - ----- [ anon ] 0000000041d5b000 128 - - - rw--- [ anon ] 0000000041d7b000 4 - - - ----- [ anon ] 0000000041d7c000 128 - - - rw--- [ anon ] 0000000041d9c000 4 - - - ----- [ anon ] 0000000041d9d000 128 - - - rw--- [ anon ] 0000000041dbd000 4 - - - ----- [ anon ] 0000000041dbe000 128 - - - rw--- [ anon ] 0000000041dde000 4 - - - ----- [ anon ] 0000000041ddf000 128 - - - rw--- [ anon ] 0000000041dff000 4 - - - ----- [ anon ] 0000000041e00000 128 - - - rw--- [ anon ] 0000000041e20000 4 - - - ----- [ anon ] 0000000041e21000 128 - - - rw--- [ anon ] 0000000041e41000 4 - - - ----- [ anon ] 0000000041e42000 128 - - - rw--- [ anon ] 0000000041e62000 4 - - - ----- [ anon ] 0000000041e63000 128 - - - rw--- [ anon ] 0000000041e83000 4 - - - ----- [ anon ] 0000000041e84000 128 - - - rw--- [ anon ] 0000000041ea4000 4 - - - ----- [ anon ] 0000000041ea5000 128 - - - rw--- [ anon ] 0000000041ec5000 4 - - - ----- [ anon ] 0000000041ec6000 128 - - - rw--- [ anon ] 0000000041ee6000 4 - - - ----- [ anon ] 0000000041ee7000 128 - - - rw--- [ anon ] 0000000041f07000 4 - - - ----- [ anon ] 0000000041f08000 128 - - - rw--- [ anon ] 0000000041f28000 4 - - - ----- [ anon ] 0000000041f29000 128 - - - rw--- [ anon ] 0000000041f49000 4 - - - ----- [ anon ] 0000000041f4a000 128 - - - rw--- [ anon ] 0000000041f6a000 4 - - - ----- [ anon ] 0000000041f6b000 128 - - - rw--- [ anon ] 0000000041f8b000 4 - - - ----- [ anon ] 0000000041f8c000 128 - - - rw--- [ anon ] 0000000041fac000 4 - - - ----- [ anon ] 0000000041fad000 128 - - - rw--- [ anon ] 0000000041fcd000 4 - - - ----- [ anon ] 0000000041fce000 128 - - - rw--- [ anon ] 0000000041fee000 4 - - - ----- [ anon ] 0000000041fef000 128 - - - rw--- [ anon ] 000000004200f000 4 - - - ----- [ anon ] 0000000042010000 128 - - - rw--- [ anon ] 0000000042030000 4 - - - ----- [ anon ] 0000000042031000 128 - - - rw--- [ anon ] 0000000042051000 4 - - - ----- [ anon ] 0000000042052000 128 - - - rw--- [ anon ] 0000000042072000 4 - - - ----- [ anon ] 0000000042073000 128 - - - rw--- [ anon ] 0000000042093000 4 - - - ----- [ anon ] 0000000042094000 128 - - - rw--- [ anon ] 00000000420b4000 4 - - - ----- [ anon ] 00000000420b5000 128 - - - rw--- [ anon ] 00000000420d5000 4 - - - ----- [ anon ] 00000000420d6000 128 - - - rw--- [ anon ] 00000000420f6000 4 - - - ----- [ anon ] 00000000420f7000 128 - - - rw--- [ anon ] 0000000042117000 4 - - - ----- [ anon ] 0000000042118000 128 - - - rw--- [ anon ] 0000000042138000 4 - - - ----- [ anon ] 0000000042139000 128 - - - rw--- [ anon ] 0000000042159000 4 - - - ----- [ anon ] 000000004215a000 128 - - - rw--- [ anon ] 000000004217a000 4 - - - ----- [ anon ] 000000004217b000 128 - - - rw--- [ anon ] 000000004219b000 4 - - - ----- [ anon ] 000000004219c000 128 - - - rw--- [ anon ] 00000000421bc000 4 - - - ----- [ anon ] 00000000421bd000 128 - - - rw--- [ anon ] 00000000421dd000 4 - - - ----- [ anon ] 00000000421de000 128 - - - rw--- [ anon ] 00000000421fe000 4 - - - ----- [ anon ] 00000000421ff000 128 - - - rw--- [ anon ] 000000004221f000 4 - - - ----- [ anon ] 0000000042220000 128 - - - rw--- [ anon ] 0000000042240000 4 - - - ----- [ anon ] 0000000042241000 128 - - - rw--- [ anon ] 0000000042261000 4 - - - ----- [ anon ] 0000000042262000 128 - - - rw--- [ anon ] 0000000042282000 4 - - - ----- [ anon ] 0000000042283000 128 - - - rw--- [ anon ] 00000000422a3000 4 - - - ----- [ anon ] 00000000422a4000 128 - - - rw--- [ anon ] 00000000422c4000 4 - - - ----- [ anon ] 00000000422c5000 128 - - - rw--- [ anon ] 00000000422e5000 4 - - - ----- [ anon ] 00000000422e6000 128 - - - rw--- [ anon ] 0000000042306000 4 - - - ----- [ anon ] 0000000042307000 128 - - - rw--- [ anon ] 0000000042327000 4 - - - ----- [ anon ] 0000000042328000 128 - - - rw--- [ anon ] 0000000042348000 4 - - - ----- [ anon ] 0000000042349000 128 - - - rw--- [ anon ] 0000000042369000 4 - - - ----- [ anon ] 000000004236a000 128 - - - rw--- [ anon ] 000000004238a000 4 - - - ----- [ anon ] 000000004238b000 128 - - - rw--- [ anon ] 00000000423ab000 4 - - - ----- [ anon ] 00000000423ac000 128 - - - rw--- [ anon ] 00000000423cc000 4 - - - ----- [ anon ] 00000000423cd000 128 - - - rw--- [ anon ] 00000000423ed000 4 - - - ----- [ anon ] 00000000423ee000 128 - - - rw--- [ anon ] 000000004240e000 4 - - - ----- [ anon ] 000000004240f000 128 - - - rw--- [ anon ] 000000004242f000 4 - - - ----- [ anon ] 0000000042430000 128 - - - rw--- [ anon ] 0000000042450000 4 - - - ----- [ anon ] 0000000042451000 128 - - - rw--- [ anon ] 0000000042471000 4 - - - ----- [ anon ] 0000000042472000 128 - - - rw--- [ anon ] 0000000042492000 4 - - - ----- [ anon ] 0000000042493000 128 - - - rw--- [ anon ] 00000000424b3000 4 - - - ----- [ anon ] 00000000424b4000 128 - - - rw--- [ anon ] 00000000424d4000 4 - - - ----- [ anon ] 00000000424d5000 128 - - - rw--- [ anon ] 00000000424f5000 4 - - - ----- [ anon ] 00000000424f6000 128 - - - rw--- [ anon ] 0000000042516000 4 - - - ----- [ anon ] 0000000042517000 128 - - - rw--- [ anon ] 0000000042537000 4 - - - ----- [ anon ] 0000000042538000 128 - - - rw--- [ anon ] 0000000042558000 4 - - - ----- [ anon ] 0000000042559000 128 - - - rw--- [ anon ] 0000000042579000 4 - - - ----- [ anon ] 000000004257a000 128 - - - rw--- [ anon ] 000000004259a000 4 - - - ----- [ anon ] 000000004259b000 128 - - - rw--- [ anon ] 00000000425bb000 4 - - - ----- [ anon ] 00000000425bc000 128 - - - rw--- [ anon ] 00000000425dc000 4 - - - ----- [ anon ] 00000000425dd000 128 - - - rw--- [ anon ] 00000000425fd000 4 - - - ----- [ anon ] 00000000425fe000 128 - - - rw--- [ anon ] 000000004261e000 4 - - - ----- [ anon ] 000000004261f000 128 - - - rw--- [ anon ] 000000004263f000 4 - - - ----- [ anon ] 0000000042640000 128 - - - rw--- [ anon ] 0000000042660000 4 - - - ----- [ anon ] 0000000042661000 128 - - - rw--- [ anon ] 0000000042681000 4 - - - ----- [ anon ] 0000000042682000 128 - - - rw--- [ anon ] 00000000426a2000 4 - - - ----- [ anon ] 00000000426a3000 128 - - - rw--- [ anon ] 00000000426c3000 4 - - - ----- [ anon ] 00000000426c4000 128 - - - rw--- [ anon ] 00000000426e4000 4 - - - ----- [ anon ] 00000000426e5000 128 - - - rw--- [ anon ] 0000000042705000 4 - - - ----- [ anon ] 0000000042706000 128 - - - rw--- [ anon ] 0000000042726000 4 - - - ----- [ anon ] 0000000042727000 128 - - - rw--- [ anon ] 0000000042747000 4 - - - ----- [ anon ] 0000000042748000 128 - - - rw--- [ anon ] 0000000042768000 4 - - - ----- [ anon ] 0000000042769000 128 - - - rw--- [ anon ] 0000000042789000 4 - - - ----- [ anon ] 000000004278a000 128 - - - rw--- [ anon ] 00000000427aa000 4 - - - ----- [ anon ] 00000000427ab000 128 - - - rw--- [ anon ] 00000000427cb000 4 - - - ----- [ anon ] 00000000427cc000 128 - - - rw--- [ anon ] 00000000427ec000 4 - - - ----- [ anon ] 00000000427ed000 128 - - - rw--- [ anon ] 000000004280d000 4 - - - ----- [ anon ] 000000004280e000 28 - - - rw--- [ anon ] 0000000042815000 4 - - - ----- [ anon ] 0000000042816000 28 - - - rw--- [ anon ] 000000004281d000 4 - - - ----- [ anon ] 000000004281e000 28 - - - rw--- [ anon ] 0000000042825000 4 - - - ----- [ anon ] 0000000042826000 28 - - - rw--- [ anon ] 000000004282d000 4 - - - ----- [ anon ] 000000004282e000 28 - - - rw--- [ anon ] 0000000042835000 4 - - - ----- [ anon ] 0000000042836000 28 - - - rw--- [ anon ] 000000004283d000 4 - - - ----- [ anon ] 000000004283e000 28 - - - rw--- [ anon ] 0000000042845000 4 - - - ----- [ anon ] 0000000042846000 28 - - - rw--- [ anon ] 000000004284d000 4 - - - ----- [ anon ] 000000004284e000 28 - - - rw--- [ anon ] 0000000300000000 524288 - - - rw-s- 9 (deleted) 0000000330000000 131072 - - - rw-s- 6 (deleted) 00000003c0000000 98304 - - - rw-s- 8 (deleted) 00000003d8000000 169984 - - - rw-s- 5 (deleted) 00000003f0000000 2048 - - - rw-s- 1 (deleted) 00000003f0400000 2048 - - - rw-s- 7 (deleted) 0000000400000000 1048576 - - - rw-s- 3 (deleted) 0000000580000000 262144 - - - rw-s- 4 (deleted) 0000000600000000 131072 - - - rw-s- 2 (deleted) 00000032d5400000 112 - - - r-x-- ld-2.5.so 00000032d561b000 4 - - - r---- ld-2.5.so 00000032d561c000 4 - - - rw--- ld-2.5.so 00000032d5800000 1328 - - - r-x-- libc-2.5.so 00000032d594c000 2048 - - - ----- libc-2.5.so 00000032d5b4c000 16 - - - r---- libc-2.5.so 00000032d5b50000 4 - - - rw--- libc-2.5.so 00000032d5b51000 20 - - - rw--- [ anon ] 00000032d6800000 520 - - - r-x-- libm-2.5.so 00000032d6882000 2044 - - - ----- libm-2.5.so 00000032d6a81000 4 - - - r---- libm-2.5.so 00000032d6a82000 4 - - - rw--- libm-2.5.so 00000032d6c00000 88 - - - r-x-- libpthread-2.5.so 00000032d6c16000 2044 - - - ----- libpthread-2.5.so 00000032d6e15000 4 - - - r---- libpthread-2.5.so 00000032d6e16000 4 - - - rw--- libpthread-2.5.so 00000032d6e17000 16 - - - rw--- [ anon ] 00000032d7000000 28 - - - r-x-- librt-2.5.so 00000032d7007000 2048 - - - ----- librt-2.5.so 00000032d7207000 4 - - - r---- librt-2.5.so 00000032d7208000 4 - - - rw--- librt-2.5.so 00002aaaac000000 132 - - - rw--- [ anon ] 00002aaaac021000 65404 - - - ----- [ anon ] 00002aaab0000000 132 - - - rw--- [ anon ] 00002aaab0021000 65404 - - - ----- [ anon ] 00002aaab4000000 132 - - - rw--- [ anon ] 00002aaab4021000 65404 - - - ----- [ anon ] 00002ad69510e000 4 - - - rw--- [ anon ] 00002ad695115000 4 - - - rw--- [ anon ] 00002ad695116000 944 - - - r-x-- libstdc++.so.6.0.10 00002ad695202000 1024 - - - ----- libstdc++.so.6.0.10 00002ad695302000 8 - - - r---- libstdc++.so.6.0.10 00002ad695304000 28 - - - rw--- libstdc++.so.6.0.10 00002ad69530b000 80 - - - rw--- [ anon ] 00002ad69531f000 88 - - - r-x-- libgcc_s.so.1 00002ad695335000 1020 - - - ----- libgcc_s.so.1 00002ad695434000 4 - - - rw--- libgcc_s.so.1 00002ad695435000 24776 - - - rw--- [ anon ] 00007fff1597d000 124 - - - rw--- [ stack ] ffffffffff600000 8192 - - - ----- [ anon ]
---------------- ------ ------ ------ ------
total kB 2641188 - - -
Will try it out, but it has to wait till this weekend.
Quoted 5 lines · Mel Gorman
[email protected], can you try the reproduction steps on your system please? If it reproduces, can you send me your .config please? If it does not reproduce, can you look at the test program and tell me what it's doing different to your reproduction case?
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