Messages in this thread | | | Date | Sun, 14 Nov 2004 15:25:36 +0100 | From | Gunther Persoons <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.25-1 |
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Ingo Molnar wrote:
>* Gunther Persoons <gunther_persoons@spymac.com> wrote: > > > >>As i thought the init scripts were my problem. But i have an other >>question. I recently started to use NFS. But with the mainline kernel >>cpu usage is 100%, and when i look in top si shows bewteen 40 and 60% >>cpu usage. With your kernel si is 0%, but ksoftriqd/0 shows around 38% >>cpu usage and total cpu usage is around 52%. Is this normal? on my >>server cpu usage is 2% but it uses a intel network card. My laptop is >>using a wireless pcmcia card (cisco). >> >> > >normally the RT kernel has higher system overhead (all IRQ traffic goes >to separate thread contexts, involving context-switching, etc.) so a >_reduction_ in system overhead looks a bit strange. Is there a >difference in performance? > > Ingo > > > With the mainline kernel i get speeds around 600-700kb/s and with the RT kernel i get speeds around 550kb/s. No other differnces except the cpu usage and that the RT kernel feels much more responsive. - 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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