Messages in this thread | | | Date | Thu, 25 Jul 2013 13:30:17 +0530 | From | Raghavendra K T <> | Subject | Hack bench regression with CONFIG_SLUB_CPU_PARTIAL disabled (info only) |
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Hi,
While testing hackbench with 3.11-rc1 I observed hackbench testcase took too long to complete (32 vcpu kvm guest on 32 core HT off machine).
hackbench 1x degraded by 3 time (40sec vs 112sec) hackbench 2x degraded by around 20time (90sec vs 1800 sec)
When I bisected, I found that I had CONFIG_SLUB_CPU_PARTIAL accidentally disabled. I understand that CONFIG_SLUB_CPU_PARTIAL=y by default and the config option is to provide determinism for RT kernels and thus it is not a problem. But thought of sharing this here so that if somebody runs into same issue accidently, it would save their time.
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