Messages in this thread | | | Date | Tue, 23 Nov 2004 10:24:32 +0200 | From | (Eran Mann) | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.30-2 |
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Ingo Molnar wrote: > * Eran Mann <emann@mrv.com> wrote: > >>Right on. >>After hdparm -d0 I see maximum latency of 35 us after a full kernel >>build with a few GUI apps in the background. I´ll try to find a >>reasonable compromise. > > it might make sense to report this to the hw vendor as well, as these > latencies dont occur at _every_ IDE DMA, it might be some sort of > chipset (or BIOS) bug they might want to see resolved as well (if this > isnt a ship-and-forget vendor). 2 msec stalls are not nice to a fair > number of applications. > > Ingo
It´s a rather old white-box machine with a noname VIA-based motherboard, So I don´t really have whom to report the problem to. On the other hand with udma2 I see latencies < 170 us which seems reasonable. Thanks for the advice. Eran. - 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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