CFQ: Don't store left slice when slice used up or for a idle workload
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From: Gui Jianfeng on 13 Jul 2010 20:50 Jeff Moyer wrote: > Gui Jianfeng <guijianfeng(a)cn.fujitsu.com> writes: > >> It doesn't make sence to store left time slice for an idle workload >> or for the cfqq that uses up its slice. > > Did you actually observe any problems? As I understand it, if you > overrun your slice you get a negative offset, so I think we want to keep > that. Hi Jeff If that's the case, do we also need to store the negative offset when slice used up in cfq_select_queue() and cfq_idle_slice_timer()? Thanks Gui > > Cheers, > Jeff > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |