device polling on SMP box

2004-11-15 Thread Axel S. Gruner
Hi. I am just wondering why options DEVICE_POLLING is not possible with a SMP-Kernel. Well, i know that there is a workaround with /usr/src/sys/kern/kern_poll.c which works perfectly building a SMP Kernel with polling. My question is, are there any known problems with SMP+polling or why is it

Re: device polling on SMP box

2004-11-15 Thread Lucas Holt
There is an assumption that it would be faster to have 2 cpus process the interupts than to use polling which can run on one processor at a time. On my system, it appears to be faster to use polling. I have a dual xeon 2.0 ghz. On Nov 15, 2004, at 5:57 AM, Axel S. Gruner wrote: Hi. I am just