Re: Linux interrupt latency

2001-02-06 Thread Andrew Morton
Mark Spencer wrote: > > Can anyone suggest what might be causing the problem on non-Intel > chipsets, particularly what event might be occuring once per second and > disabling interrupts for a couple of hundred microseconds? Thanks! I have a gizmo which will find this for you. http://www.uow.e

Re: Linux interrupt latency

2001-02-06 Thread Alan Cox
> A 450MHz PII processor isn't really up to the task. Jim Dixon, who > designed the card, recommends at least a 733MHz PIII, based on his > experience with the original BSD driver. I am able to run one as a dual It shouldnt matter. If its entirely tied to ISA bus performance you should be able to

Re: Linux interrupt latency

2001-02-06 Thread Steve Underwood
Linus Torvalds wrote: > > In article <[EMAIL PROTECTED]>, > Mark Spencer <[EMAIL PROTECTED]> wrote: > >I'm working on the Linux driver for the Tormenta public domain dual T1 > >card (see http://www.bsdtelephony.com.mx). > > Hmm.. Sounds like somebody has designed a truly crappy card. Everything

Re: Linux interrupt latency

2001-02-05 Thread Linus Torvalds
In article <[EMAIL PROTECTED]>, Mark Spencer <[EMAIL PROTECTED]> wrote: >I'm working on the Linux driver for the Tormenta public domain dual T1 >card (see http://www.bsdtelephony.com.mx). Hmm.. Sounds like somebody has designed a truly crappy card. Everything is allowable in the name of being ch

Linux interrupt latency

2001-02-05 Thread Mark Spencer
I'm working on the Linux driver for the Tormenta public domain dual T1 card (see http://www.bsdtelephony.com.mx). This card is a controllerless ISA T1 card with no memory, meaning the host CPU must load the next 48 outgoing bytes and read the previous 48 incoming bytes off the ISA bus 8000 times