accounting: task counters for disk/network
PATCH 3/3 accounting: task counters for disk/network
From: Gerlof Langeveld <[email protected]>
This patch depends on patch 2/3 "accounting: task counters for disk/network".
Kernel configuration should allow the selection of the required type of process accounting record (new type 6). The standard type of process accounting record remains the default.
Furthermore per-task I/O accounting (i.e. the availability of the file /proc/pid/io) is made independent of the export of these statistics through netlink. The current structure of the ifdef's allows this independency.
Modified file
init/Kconfig: When process accounting support is configured,
a choice can be made between type 2 (default), type 3 (was already an existing alternative) or type 6 (new alternative).
Task I/O accounting is no longer depending on extended taskstats through netlink interface.
---
init/Kconfig +25 -7
@@ -152,18 +152,37 @@ config BSD_PROCESS_ACCT up to the user level program to do useful things with this information. This is generally a good idea, so say Y. +choice + depends on BSD_PROCESS_ACCT + prompt "Accounting record type" + default BSD_PROCESS_ACCT_V2 + +config BSD_PROCESS_ACCT_V2 + bool "BSD Process Accounting version 2 file format" + help + Default format with limited process accounting information. + config BSD_PROCESS_ACCT_V3 bool "BSD Process Accounting version 3 file format" - depends on BSD_PROCESS_ACCT - default n help - If you say Y here, the process accounting information is written + The process accounting information is written in a new file format that also logs the process IDs of each process and it's parent. Note that this file format is incompatible with previous v0/v1/v2 file formats, so you will need updated tools for processing it. A preliminary version of these tools is available at <http://www.physik3.uni-rostock.de/tim/kernel/utils/acct/>. +config PROCESS_ACCT_V6 + bool "Process Accounting version 6 file format" + help + The process accounting information is written + in a file format that logs the PID of each process and + additional I/O statistics for disk and networking. + Note that this file format is incompatible + with previous v0/v1/v2/v3 file formats, but supplies optimal + information for tools like atop. +endchoice + config TASKSTATS bool "Export task/process statistics through netlink (EXPERIMENTAL)" depends on NET
@@ -198,11 +217,10 @@ config TASK_XACCT Say N if unsure. config TASK_IO_ACCOUNTING - bool "Enable per-task storage I/O accounting (EXPERIMENTAL)" - depends on TASK_XACCT + bool "Enable per-task I/O accounting (EXPERIMENTAL)" help - Collect information on the number of bytes of storage I/O which this - task has caused. + Collect information on disk and network I/O which this task + has caused. Say N if unsure.