Messages in this thread |  | | From | Roger Larsson <> | Subject | Re: [PATCH] Preemption Latency Measurement Tool | Date | Fri, 21 Sep 2001 03:53:08 +0200 |
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On Friday 21 September 2001 03.38, Roger Larsson wrote: > On Friday 21 September 2001 03.03, Alan Cox wrote: > > > If this analysis is correct: > > > We really need to run RT processes with RT priorities! > > > > > > It is also possible that multimedia applications needs to be rewritten > > > = to > > > > I dont believe this is an application problem. Applications allocating > > memory can end up doing page outs for other people. Its really important > > they dont get stuck doing a huge amount of pageout work for someone else. > > Thats one thing I seem to be seeing with the 10pre11 VM. > > > > Sound cards have a lot of buffering, we are talking 64-128Kbytes + on > > card buffers. Thats 0.25-0.5 seconds at 48Khz 16bit stereo > > Hmm.. > > The yield we do in __alloc_pages is it really correct? > 1. Suppose it is not we that are the problem. > 2. Suppose there are lots of other processes that gets to run. > 3. If kswapd had higher prio, it would start to run without us giving up... > > I have to try... >
They were already gone in -pre12! But I was running -pre10... Others? Dieter is running -pre12... I will test it anyways...
/RogerL
-- Roger Larsson Skellefteå Sweden - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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