Re: [Bug #14950] tbench regression with 2.6.33-rc1

[Mike Galbraith]

On Sun, 2010-03-21 at 21:30 +0100, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.32 and 2.6.33.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.32 and 2.6.33.  Please verify if it still should
> be listed and let the tracking team know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14950
> Subject		: tbench regression with 2.6.33-rc1
> Submitter	: Lin Ming <ming.m.lin@xxxxxxxxx>
> Date		: 2009-12-25 11:11 (87 days old)
> References	: http://marc.info/?l=linux-kernel&m=126174044213172&w=4

This needs retest in tip.  I submitted some patchlets to shave a few
cycles, with which my box (fwtw) shows zero regression 2.6.31 ->
tip.today, whereas there was nothing but regression of up to ~6% in
between, magnitude seemingly depending on phase-of-moon.  Actually,
patched tip at submission time was a fraction above 31 throughput.
Retesting today, it's a fraction of a percent below again (tbench is
annoyingly jittery).

Hopefully, this tbench regression is on it's way to retirement.

	-Mike

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/