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From: john stultz <johnstul@us.ibm.com>
To: Andrew Morton <akpm@osdl.org>, Andi Kleen <ak@suse.de>
Cc: john stultz <johnstul@us.ibm.com>,
	linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@elte.hu
Subject: [PATCH 0/5][time][x86_64] GENERIC_TIME patchset for x86_64
Date: Tue, 19 Dec 2006 20:20:39 -0500	[thread overview]
Message-ID: <20061220011707.25341.6522.sendpatchset@localhost> (raw)

Andrew, Andi,

	I didn't hear any objections (or really, any comments) on my 
last release, so as I mentioned then, I want to go ahead and push this 
to Andrew for a bit of testing in -mm. Hopefully targeting for 
inclusion in 2.6.21 or 2.6.22.

Here's the performance data from the last release:

Vanilla TSC:
149 nsecs per gtod call
367 nsecs per CLOCK_MONOTONIC call
288 nsecs per CLOCK_REALTIME call
Vanilla ACPI PM:
1272 nsecs per gtod call
1335 nsecs per CLOCK_MONOTONIC call
1273 nsecs per CLOCK_REALTIME call

GENERIC_TIME TSC:
149 nsecs per gtod call
304 nsecs per CLOCK_MONOTONIC call
275 nsecs per CLOCK_REALTIME call
GENERIC_TIME ACPI PM:
1273 nsecs per gtod call
1275 nsecs per CLOCK_MONOTONIC call
1273 nsecs per CLOCK_REALTIME call

So almost no performance change.

New in the current C8 release:
o Synced up w/ 2.6.20-rc1
o Added a few small cleanups from Ingo

Let me know if you have any thoughts or comments!

thanks again!
-john

             reply	other threads:[~2006-12-20  1:20 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-12-20  1:20 john stultz [this message]
2006-12-20  1:20 ` [PATCH 1/5][time][generic] vsyscall-gtod support for GENERIC_TIME john stultz
2006-12-20  1:20 ` [PATCH 2/5][time][x86_64] hpet_address cleanup john stultz
2006-12-20  1:20 ` [PATCH 3/5][time][x86_64] Split x86_64/kernel/time.c up john stultz
2006-12-20  1:21 ` [PATCH 4/5][time][x86_64] Convert x86_64 to use GENERIC_TIME john stultz
2006-12-20  1:21 ` [PATCH 5/5][time][x86_64] Re-enable vsyscall support for x86_64 john stultz
2006-12-20 19:26 ` [PATCH 0/5][time][x86_64] GENERIC_TIME patchset " Valdis.Kletnieks
2006-12-20 19:47   ` john stultz
  -- strict thread matches above, loose matches on Subject: below --
2006-11-29  3:00 john stultz

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