numa/core regressions fixed - more testers wanted

From: Ingo Molnar
Date: Tue Nov 20 2012 - 12:56:50 EST



* Ingo Molnar <mingo@xxxxxxxxxx> wrote:

> ( The 4x JVM regression is still an open bug I think - I'll
> re-check and fix that one next, no need to re-report it,
> I'm on it. )

So I tested this on !THP too and the combined numbers are now:

|
[ SPECjbb multi-4x8 ] |
[ tx/sec ] v3.7 | numa/core-v16
[ higher is better ] ----- | -------------
|
+THP: 639k | 655k +2.5%
-THP: 510k | 517k +1.3%

So it's not a regression anymore, regardless of whether THP is
enabled or disabled.

The current updated table of performance results is:

-------------------------------------------------------------------------
[ seconds ] v3.7 AutoNUMA | numa/core-v16 [ vs. v3.7]
[ lower is better ] ----- -------- | ------------- -----------
|
numa01 340.3 192.3 | 139.4 +144.1%
numa01_THREAD_ALLOC 425.1 135.1 | 121.1 +251.0%
numa02 56.1 25.3 | 17.5 +220.5%
|
[ SPECjbb transactions/sec ] |
[ higher is better ] |
|
SPECjbb 1x32 +THP 524k 507k | 638k +21.7%
SPECjbb 1x32 !THP 395k | 512k +29.6%
|
-----------------------------------------------------------------------
|
[ SPECjbb multi-4x8 ] |
[ tx/sec ] v3.7 | numa/core-v16
[ higher is better ] ----- | -------------
|
+THP: 639k | 655k +2.5%
-THP: 510k | 517k +1.3%

So I think I've addressed all regressions reported so far - if
anyone can still see something odd, please let me know so I can
reproduce and fix it ASAP.

Next I'll work on making multi-JVM more of an improvement, and
I'll also address any incoming regression reports.

Those of you who would like to test all the latest patches are
welcome to pick up latest bits at tip:master:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git master

Thanks,

Ingo
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