Messages in this thread | | | Date | Sun, 08 Aug 2004 10:03:40 +0100 | From | Hamie <> | Subject | Re: ide-cs using 100% CPU |
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Alan Cox wrote:
>On Gwe, 2004-08-06 at 20:33, Hamie wrote: > > >>Is 100% CPU not excessive? IIRC my PIII-750 used to use less CPU doing >>the same job as quick, or even slightly faster... >> >> > >PCMCIA IDE is PIO only so it burns CPU. This is one case where >hyperthreading is nice. Cardbus IDE is a lot better but very little >exists and we don't currently support hotplug IDE controllers. > > >
Ah right. But would a CF memory card be cardbus anyway?
>>And should it not use system CPU rather than user CPU? >> >> > >Yes - but figure out please if the kernel or userspace is getting that >wrong ;) > > >
My apologies. It was gkrellm leading me up the garden path on that one... Copying about 100MB from a 512MB CF card (25+ photos from my camera) vmstat 5 reports 4% usercpu, 96% system cpu. And the response on the system is sluggish to say the least. (Moving the pointer in X is painful :). gkrell meanwhile on it's cpu graph shows about 30% system, and the rest as userCPU. No idea why, I guess till I find out I'll just regard gkrellm's cpu graph as a waste of space (To differentiate system & user cpu anyway :).
> >
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