On Mon, 19 Nov 2012, Mel Gorman wrote:
> I was not able to run a full sets of tests today as I was distracted so
> all I have is a multi JVM comparison. I'll keep it shorter than average
>
> 3.7.0 3.7.0
> rc5-stats-v4r2 rc5-schednuma-v16r1
> TPut 1 101903.00 ( 0.00%) 77651.00 (-23.80%)
> TPut 2 213825.00 ( 0.00%) 160285.00 (-25.04%)
> TPut 3 307905.00 ( 0.00%) 237472.00 (-22.87%)
> TPut 4 397046.00 ( 0.00%) 302814.00 (-23.73%)
> TPut 5 477557.00 ( 0.00%) 364281.00 (-23.72%)
> TPut 6 542973.00 ( 0.00%) 420810.00 (-22.50%)
> TPut 7 540466.00 ( 0.00%) 448976.00 (-16.93%)
> TPut 8 543226.00 ( 0.00%) 463568.00 (-14.66%)
> TPut 9 513351.00 ( 0.00%) 468238.00 ( -8.79%)
> TPut 10 484126.00 ( 0.00%) 457018.00 ( -5.60%)
> TPut 11 467440.00 ( 0.00%) 457999.00 ( -2.02%)
> TPut 12 430423.00 ( 0.00%) 447928.00 ( 4.07%)
> TPut 13 445803.00 ( 0.00%) 434823.00 ( -2.46%)
> TPut 14 427388.00 ( 0.00%) 430667.00 ( 0.77%)
> TPut 15 437183.00 ( 0.00%) 423746.00 ( -3.07%)
> TPut 16 423245.00 ( 0.00%) 416259.00 ( -1.65%)
> TPut 17 417666.00 ( 0.00%) 407186.00 ( -2.51%)
> TPut 18 413046.00 ( 0.00%) 398197.00 ( -3.59%)
>
> This version of the patches manages to cripple performance entirely. I
> do not have a single JVM comparison available as the machine has been in
> use during the day. I accept that it is very possible that the single
> JVM figures are better.
>
I confirm that SPECjbb2005 1.07 -Xmx4g regresses in terms of throughput on
my 16-way, 4 node system with 32GB of memory using 16 warehouses and 240
measurement seconds. I averaged the throughput for five runs on each
kernel.
Java(TM) SE Runtime Environment (build 1.6.0_06-b02)
Java HotSpot(TM) 64-Bit Server VM (build 10.0-b22, mixed mode)
Both kernels have
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
numa/core at 01aa90068b12 ("sched: Use the best-buddy 'ideal cpu' in
balancing decisions") with
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_ARCH_WANTS_NUMA_GENERIC_PGPROT=y
CONFIG_NUMA_BALANCING=y
CONFIG_NUMA_BALANCING_HUGEPAGE=y
CONFIG_ARCH_USES_NUMA_GENERIC_PGPROT=y
CONFIG_ARCH_USES_NUMA_GENERIC_PGPROT_HUGEPAGE=y
had a throughput of 128315.19 SPECjbb2005 bops.
numa/core at ec05a2311c35 ("Merge branch 'sched/urgent' into sched/core")
had an average throughput of 136918.34 SPECjbb2005 bops, which is a 6.3%
regression.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>