(1/2) reverse mapping VM for 2.5.23 (rmap-13b)
Quoted 4 lines
Absolutely. Maybe Randy Hron (added to Cc) can find some spare time to benchmark these sometime before the summit too[1]. It'll be very interesting to see where it fits in with the other benchmark results he's collected on varying workloads.
I'd like to start benchmarking 2.5 on the quad xeon. You fixed the aic7xxx driver in 2.5.23-dj1. It also has a qlogic QLA2200.
You mentioned the qlogic driver in 2.5 may not have the new error handling yet.
I haven't been able to get a <SysRq showTasks> on it yet, but the reproducable scenerio for all the 2.5.x kernels I've tried has been:
mke2fs -q /dev/sdc1
mount -t ext2 -o defaults,noatime /dev/sdc1 /fs1 mkreiserfs /dev/sdc2
mount -t reiserfs -o defaults,noatime /dev/sdc2 /fs2 mke2fs -q -j -J size=400 /dev/sdc3
mount -t ext3 -o defaults,noatime,data=writeback /dev/sdc3 /fs3
for fs in /fs1 /fs2 /fs3
do cpio a hundred megabytes of benchmarks into the 3 filesystems.
sync;sync;sync
umount $fs
done
In 2.5.x umount(1) hangs in uninteruptable sleep when umounting the first or second filesystem. In 2.5.23, the sync was in uninteruptable sleep before umounting /fs2.
The compile error on 2.5.23-dj1 was:
gcc -Wp,-MD,./.qlogicisp.o.d -D__KERNEL__ -I/usr/src/linux-2.5.23-dj1/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=i686 -nostdinc -iwithprefix include -DKBUILD_BASENAME=qlogicisp -c -o qlogicisp.o qlogicisp.c
qlogicisp.c:2005: unknown field abort' specified in initializer qlogicisp.c:2005: warning: initialization from incompatible pointer type qlogicisp.c:2005: unknown field reset' specified in initializer qlogicisp.c:2005: warning: initialization from incompatible pointer type make[2]: *** [qlogicisp.o] Error 1
make[2]: Leaving directory `/usr/src/linux-2.5.23-dj1/drivers/scsi' make[1]: *** [scsi] Error 2
make[1]: Leaving directory `/usr/src/linux-2.5.23-dj1/drivers'
make: *** [drivers] Error 2
Just in case someone with know-how and can do wants to[1].
Quoted 1 line
[1] I am master of subtle hints.
I'll put 2.5.x on top of the quad Xeon benchmark queue as soon as I can.
Signature · 2 lines
Randy Hron http://home.earthlink.net/~rwhron/kernel/bigbox.html
Quoted 7 lines · On Thu, Jun 20, 2002 at 12:07:49AM -0400, [email protected] wrote:
The compile error on 2.5.23-dj1 was:
gcc -Wp,-MD,./.qlogicisp.o.d -D__KERNEL__ -I/usr/src/linux-2.5.23-dj1/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=i686 -nostdinc -iwithprefix include -DKBUILD_BASENAME=qlogicisp -c -o qlogicisp.o
qlogicisp.c
qlogicisp.c:2005: unknown fieldabort' specified in initializer qlogicisp.c:2005: warning: initialization from incompatible pointer type qlogicisp.c:2005: unknown fieldreset' specified in initializer qlogicisp.c:2005: warning: initialization from incompatible pointer type
Ok, it looks like it hasn't been updated to include the new-style EH yet (although there are/were some that had both). Setting the option "Use SCSI drivers with broken error handling [DANGEROUS]" in the SCSI submenu will give same behaviour as that driver does in Linus' tree. Ie, it will compile, but possibly not have any working error handling. It should be ok for benchmarking though..
Dave
Signature · 2 lines
| Dave Jones. http://www.codemonkey.org.uk | SuSE Labs