Re: scheduling latencies, [patch] `cp /dev/zero /tmp' (patch against 2.2.9)

Rogier Wolff (R.E.Wolff@BitWizard.nl)
Fri, 18 Jun 1999 10:34:14 +0200 (MEST)

Alan Cox wrote:
> > PII 400 + Mainboard Asus P2B BX Chipset, with a IBM Deskstar 16GB UDMA as
> > /dev/hdc
> >
> > tu tune the disk I enabled all useful features:
> >
> > multicount , DMA , unmask IRQs , enable 32 bit support
>
> Ok. It is a tightly tuned box. Thats what I wanted to be sure of.
>
> > try my benchmark yourself:
> > http://www.gardena.net/benno/linux/latencytest0.3.tgz
> >
> > to note that heavy access to the /proc filesystem (using top -d 0.01 ) causes
> > audio drop outs too, not so long as disk access, in the range of 15ms , but that
> > seems a bit high for me.
>
> The proc fs has some locking "issues". Im well aware of those.

Try running top while you have 200+ processes running. It will be even
worse.

Roger. 

-- 
** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2137555 **
*-- BitWizard writes Linux device drivers for any device you may have! --*
------ Microsoft SELLS you Windows, Linux GIVES you the whole house ------




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