Re: linux-kernel-digest V1 #1076

Andre Hedrick (andre@linux-ide.org)
Fri, 30 Jun 2000 22:27:08 -0700 (PDT)


On Sat, 1 Jul 2000, Paul Barton-Davis wrote:

> David Lang <david.lang@digitalinsight.com> writes:
>
> >Also note that if there are specific drivers that violate the latency
> >timing but the kernel itself is good, then there will be a case of "if you
> >need <5ms latency don't use a NE2000 card" or IDE drive or whatever.

Please feel free to nail me if it is wrong, but make you case strong.

> >I am not listing this as a problem as much as a reality that will arise
> >and an aswer to the suggestion that if the kernel can't be made perfect
> >it's not worth doing
>
> its worth noting that this is precisely what Be say about the
> BeOS. there is at least one driver (for a gaming joystick) that is
> known to destroy the low latency figures for the kernel.
>
> thats OK by me, if its documented and made public ("if you are doing
> low latency stuff, do NOT use the foobar-XYZ module because ...").

Cheers,

Andre Hedrick
The Linux ATA/IDE guy

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