On 04/02/2013 04:34 PM, Mike Galbraith wrote: [snip] >> The reason may caused by wake_affine()'s higher overhead, and pgbench is >> really sensitive to this stuff... > > For grins, you could try running the whole thing SCHED_BATCH. (/me sees > singing/dancing red herring whenever wake_affine() and pgbench appear in > the same sentence;)
I saw the patch touched the wake_affine(), just interested on what will happen ;-) The patch changed the overhead of wake_affine(), and also influence it's result, I used to think the later one may do some help to the pgbench... Regards, Michael Wang > > -Mike > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
