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 __ Chuck - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
