Re: SCHED_4BSD bad interactivity on 7.0 vs 6.3

2008-07-14 Thread Nate Eldredge
On Sun, 13 Jul 2008, Nate Eldredge wrote: On Sun, 13 Jul 2008, Kris Kennaway wrote: Nate Eldredge wrote: On Sun, 13 Jul 2008, Kris Kennaway wrote: Nate Eldredge wrote: Hi folks, Hopefully this is a good list for this topic. It seems like there has been a regression in interactivity from

Re: SCHED_4BSD bad interactivity on 7.0 vs 6.3

2008-07-13 Thread Nate Eldredge
On Sun, 13 Jul 2008, Kris Kennaway wrote: Nate Eldredge wrote: Hi folks, Hopefully this is a good list for this topic. It seems like there has been a regression in interactivity from 6.3-RELEASE to 7.0-RELEASE when using the SCHED_4BSD scheduler. After upgrading my single-cpu amd64 box,

Re: SCHED_4BSD bad interactivity on 7.0 vs 6.3

2008-07-13 Thread Stefan Sperling
On Sun, Jul 13, 2008 at 01:34:11AM -0700, Nate Eldredge wrote: On Sun, 13 Jul 2008, Kris Kennaway wrote: Nate Eldredge wrote: I wrote a small program which forks two processes that run gettimeofday() in a tight loop to see how long they get scheduled out. On 6.3 the maximum

Re: SCHED_4BSD bad interactivity on 7.0 vs 6.3

2008-07-13 Thread Kris Kennaway
Nate Eldredge wrote: On Sun, 13 Jul 2008, Kris Kennaway wrote: Nate Eldredge wrote: Hi folks, Hopefully this is a good list for this topic. It seems like there has been a regression in interactivity from 6.3-RELEASE to 7.0-RELEASE when using the SCHED_4BSD scheduler. After upgrading my

Re: SCHED_4BSD bad interactivity on 7.0 vs 6.3

2008-07-13 Thread Eugene Grosbein
On Sun, Jul 13, 2008 at 03:11:23AM +0200, Kris Kennaway wrote: It seems like there has been a regression in interactivity from 6.3-RELEASE to 7.0-RELEASE when using the SCHED_4BSD scheduler. After upgrading my single-cpu amd64 box, 7.0 has much worse latency. When running a kernel

Re: SCHED_4BSD bad interactivity on 7.0 vs 6.3

2008-07-13 Thread Nate Eldredge
On Sun, 13 Jul 2008, Kris Kennaway wrote: Nate Eldredge wrote: On Sun, 13 Jul 2008, Kris Kennaway wrote: Nate Eldredge wrote: Hi folks, Hopefully this is a good list for this topic. It seems like there has been a regression in interactivity from 6.3-RELEASE to 7.0-RELEASE when using the

Re: SCHED_4BSD bad interactivity on 7.0 vs 6.3

2008-07-13 Thread Garrett Cooper
On Sun, Jul 13, 2008 at 12:47 AM, Eugene Grosbein [EMAIL PROTECTED] wrote: On Sun, Jul 13, 2008 at 03:11:23AM +0200, Kris Kennaway wrote: It seems like there has been a regression in interactivity from 6.3-RELEASE to 7.0-RELEASE when using the SCHED_4BSD scheduler. After upgrading my

SCHED_4BSD bad interactivity on 7.0 vs 6.3

2008-07-12 Thread Nate Eldredge
Hi folks, Hopefully this is a good list for this topic. It seems like there has been a regression in interactivity from 6.3-RELEASE to 7.0-RELEASE when using the SCHED_4BSD scheduler. After upgrading my single-cpu amd64 box, 7.0 has much worse latency. When running a kernel compile, there

Re: SCHED_4BSD bad interactivity on 7.0 vs 6.3

2008-07-12 Thread Kris Kennaway
Nate Eldredge wrote: Hi folks, Hopefully this is a good list for this topic. It seems like there has been a regression in interactivity from 6.3-RELEASE to 7.0-RELEASE when using the SCHED_4BSD scheduler. After upgrading my single-cpu amd64 box, 7.0 has much worse latency. When running a