Messages in this thread |  | | | Subject | Re: hackbench regression due to commit 9dfc6e68bfe6e | | From | Eric Dumazet <> | | Date | Thu, 08 Apr 2010 10:09:55 +0200 |
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Le jeudi 08 avril 2010 à 09:54 +0200, Eric Dumazet a écrit : > Le jeudi 08 avril 2010 à 15:54 +0800, Zhang, Yanmin a écrit : > > > If there are 2 nodes in the machine, processes on node 0 will contact MCH of > > node 1 to access memory of node 1. I suspect the MCH of node 1 might enter > > a power-saving mode when all the cpus of node 1 are free. So the transactions > > from MCH 1 to MCH 0 has a larger latency. > > > > Hmm, thanks for the hint, I will investigate this.
Oh well,
perf timechart record &
Instant crash
Call Trace: perf_trace_sched_switch+0xd5/0x120 schedule+0x6b5/0x860 retint_careful+0xd/0x21
RIP ffffffff81010955 perf_arch_fetch_caller_regs+0x15/0x40 CR2: 00000000d21f1422
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