Messages in this thread | | | Date | Sat, 30 Jul 2005 19:26:40 -0400 | From | Chuck Ebbert <> | Subject | Re: [sched, patch] better wake-balancing, #2 |
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On Fri, 29 Jul 2005 at 17:02:07 +0200, Ingo Molnar wrote:
> do wakeup-balancing only if the wakeup-CPU is idle. > > this prevents excessive wakeup-balancing while the system is highly > loaded, but helps spread out the workload on partly idle systems.
I tested this with Volanomark on dual-processor PII Xeon -- the results were very bad:
Before: 5863 messages per second
124169 schedule 64.1369 64663 _spin_unlock_irqrestore 4041.4375 7949 tcp_clean_rtx_queue 6.5370 6787 net_rx_action 24.9522
After: 5569 messages per second
139417 schedule 72.0129 82169 _spin_unlock_irqrestore 5135.5625 9949 tcp_clean_rtx_queue 8.1817 7917 net_rx_action 29.1066
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