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[PATCH] delay accounting: temporarily enable by default

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Enable delay accounting by default so that feature gets coverage testing
without requiring special measures.

Earlier, it was off by default and had to be enabled via a boot time param.
 This patch reverses the default behaviour to improve coverage testing.  It
can be removed late in the kernel development cycle if its believed users
shouldn't have to incur any cost if they don't want delay accounting.  Or
it can be retained forever if the utility of the stats is deemed common
enough to warrant keeping the feature on.

Signed-off-by: Shailabh Nagar <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Shailabh Nagar 2006-07-30 03:03:11 -07:00 • committed by Linus Torvalds
commit 163ecdff06
4 changed files with 14 additions and 12 deletions
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10
Documentation/accounting/delay-accounting.txt
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@ -64,11 +64,13 @@ Compile the kernel with
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASKSTATS=y
Enable the accounting at boot time by adding
the following to the kernel boot options
delayacct
Delay accounting is enabled by default at boot up.
To disable, add
nodelayacct
to the kernel boot options. The rest of the instructions
below assume this has not been done.
and after the system has booted up, use a utility
After the system has booted up, use a utility
similar to getdelays.c to access the delays
seen by a given task or a task group (tgid).
The utility also allows a given command to be