Re: re-inline sched functions
From: Andrew Morton
Date: Thu Mar 10 2005 - 19:44:35 EST
"Chen, Kenneth W" <kenneth.w.chen@xxxxxxxxx> wrote:
> This could be part of the unknown 2% performance regression with
> db transaction processing benchmark.
> The four functions in the following patch use to be inline. They
> are un-inlined since 2.6.7.
> We measured that by re-inline them back on 2.6.9, it improves performance
> for db transaction processing benchmark, +0.2% (on real hardware :-)
> The cost is certainly larger kernel size, cost 928 bytes on x86, and
> 2728 bytes on ia64. But certainly worth the money for enterprise
> customer since they improve performance on enterprise workload.
Less that 1k on x86 versus >2k on ia64. No wonder those things have such
big caches ;)
> Possible we can introduce them back?
OK by me.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/