Re: CPU affinity in new ULE scheduler

2005-11-12 Thread Robert Watson
On Wed, 9 Nov 2005, Ian Lord wrote: Are you saying that ULE is slower then 4BSD ? I'm new to this and when I compiled my kernel, it was clear ULE was a better alternative for performance then 4BSD Schedulers are one of the hardest things to do right in OS design, as they rely a great deal

CPU affinity in new ULE scheduler

2005-11-09 Thread Jon Brisbin
I can't find any information on how to set the CPU affinity for processes in the FreeBSD 6 ULE scheduler. On the linux box, which we're moving from, I have dual Xeon HTT's that I have JBoss scheduled round-robin with the CPU affinity set to the first two processors, nice -15. I have Postgres

Re: CPU affinity in new ULE scheduler

2005-11-09 Thread Kris Kennaway
On Wed, Nov 09, 2005 at 04:16:31PM -0600, Jon Brisbin wrote: I can't find any information on how to set the CPU affinity for processes in the FreeBSD 6 ULE scheduler. That's because you can't. ULE gives lower performance on the workloads I have tested anyway. This may be fixed in the

Re: CPU affinity in new ULE scheduler

2005-11-09 Thread Ian Lord
Are you saying that ULE is slower then 4BSD ? I'm new to this and when I compiled my kernel, it was clear ULE was a better alternative for performance then 4BSD Thanks At 19:05 2005-11-09, Kris Kennaway wrote: On Wed, Nov 09, 2005 at 04:16:31PM -0600, Jon Brisbin wrote: I can't find any

Re: CPU affinity in new ULE scheduler

2005-11-09 Thread Kris Kennaway
On Wed, Nov 09, 2005 at 07:08:12PM -0500, Ian Lord wrote: Are you saying that ULE is slower then 4BSD ? I'm new to this and when I compiled my kernel, it was clear ULE was a better alternative for performance then 4BSD Yes, in the workloads I have tested. Others have reported similar