On Thursday 03 July 2003 2:36 pm, John Hawkes wrote: > This change has already made its way into linux-2.5.72-ia64-031619.diff. > Here is the diff relative to 2.4.21 + linux-2.4.21-ia64-030702.diff. > > This patch *significantly* improves the scalability of handle_fpu_swa() > when multiple CPUs are generating concurrent fp-assist traps. > The original algorithm produces cacheline ping-ponging for the cacheline > that contains fpu_swa_count. This new algorithm only dirties > fpu_sw_count when the printk() is about to occur, rather than on every > fpassist trap, which throttles the ping-ponging to no more than five per > second. I applied this for 2.4. Thanks! Bjorn - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.htmlReceived on Tue Jul 29 19:07:03 2003
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