RE: Possible scheduler (SCHED_ULE) bug?

2009-12-16 Thread Jaime Bozza
From: Jacob Myers [mailto:ja...@whotookspaz.org] Jaime Bozza wrote: From: Arnaud Houdelette [mailto:arnaud.houdele...@tzim.net] I haven't tried larger files - Maybe the boundary is different on amd64? Doing some quick tests right now, I was able to upload a 100MB file without a

Re: Possible scheduler (SCHED_ULE) bug?

2009-11-08 Thread Attilio Rao
2009/10/23 Jaime Bozza jbo...@mindsites.com: I believe I found a problem with the ULE scheduler - At least the fact that there is a problem, but I'm not sure where to go from here. The system locks all processes, but doesn't panic, so I have no output to give. I was able to duplicate this

Re: Possible scheduler (SCHED_ULE) bug?

2009-11-04 Thread Jacob Myers
Jaime Bozza wrote: From: Arnaud Houdelette [mailto:arnaud.houdele...@tzim.net] I haven't tried larger files - Maybe the boundary is different on amd64? Doing some quick tests right now, I was able to upload a 100MB file without a problem, but this is an AMD64 system with SMP, plus the

Re: Possible scheduler (SCHED_ULE) bug?

2009-10-26 Thread Arnaud Houdelette
Jaime Bozza a écrit : The additional information I have (over the PR) is that: 1) Files over 64K cause the problem, not just larger files I thought it was over 1 MB or so. But maybe I'm wrong. ISTR that I couldn't trigger it with some images of around 70K. I discovered it

Re: Possible scheduler (SCHED_ULE) bug?

2009-10-26 Thread Jacob Myers
Arnaud Houdelette wrote: I had the same issue using 7.1 amd64, with ZFS, no SMP. Not really sure what is the size boundary. I can't really test either, as the machine is remote. But I confirm that each tentative upload of certain relatively 'big' files (around 1MB) with wordpress hanged the

RE: Possible scheduler (SCHED_ULE) bug?

2009-10-26 Thread Jaime Bozza
From: Jacob Myers [mailto:ja...@whotookspaz.org] Arnaud Houdelette wrote: I had the same issue using 7.1 amd64, with ZFS, no SMP. Not really sure what is the size boundary. I can't really test either, as the machine is remote. But I confirm that each tentative upload of certain

RE: Possible scheduler (SCHED_ULE) bug?

2009-10-26 Thread Jaime Bozza
Sincerely, Jaime Bozza MindSites Group, LLC From: Dylan Cochran [mailto:heliocent...@gmail.com] Superficially, this seams identical to a deadlock I reported for 7.1-RC1. Would you mind compiling a kernel with these options: snip KDB: stack backtrace:

RE: Possible scheduler (SCHED_ULE) bug?

2009-10-26 Thread Jaime Bozza
From: Kostik Belousov [mailto:kostik...@gmail.com] Can you look up the source line for kern_sendfile+0x90d in your kernel ? Do kgdb kernel.debug, then execute list *(kern_sendfile+0x90d). In my case, it was kern_sendfile+0x6ad (rebuilt with RELENG_7 this weekend). Here's the output: (kgdb)

RE: Possible scheduler (SCHED_ULE) bug?

2009-10-26 Thread Jaime Bozza
From: Arnaud Houdelette [mailto:arnaud.houdele...@tzim.net] I haven't tried larger files - Maybe the boundary is different on amd64? Doing some quick tests right now, I was able to upload a 100MB file without a problem, but this is an AMD64 system with SMP, plus the filesystem is all ZFS,

RE: Possible scheduler (SCHED_ULE) bug?

2009-10-24 Thread Jaime Bozza
The additional information I have (over the PR) is that: 1) Files over 64K cause the problem, not just larger files I thought it was over 1 MB or so. But maybe I'm wrong. ISTR that I couldn't trigger it with some images of around 70K. I discovered it originally with a 72K file. After some

Possible scheduler (SCHED_ULE) bug?

2009-10-23 Thread Jaime Bozza
I believe I found a problem with the ULE scheduler - At least the fact that there is a problem, but I'm not sure where to go from here. The system locks all processes, but doesn't panic, so I have no output to give. I was able to duplicate this on three different machines and solved it by

Re: Possible scheduler (SCHED_ULE) bug?

2009-10-23 Thread Scott Ullrich
On Fri, Oct 23, 2009 at 2:46 PM, Jaime Bozza jbo...@mindsites.com wrote: I believe I found a problem with the ULE scheduler - At least the fact that there is a problem, but I'm not sure where to go from here.   The system locks all processes, but doesn't panic, so I have no output to give.

Re: Possible scheduler (SCHED_ULE) bug?

2009-10-23 Thread Dylan Cochran
On 10/23/09, Jaime Bozza jbo...@mindsites.com wrote: I believe I found a problem with the ULE scheduler - At least the fact that there is a problem, but I'm not sure where to go from here. The system locks all processes, but doesn't panic, so I have no output to give. I was able to

RE: Possible scheduler (SCHED_ULE) bug?

2009-10-23 Thread Jaime Bozza
Try adding this or changing these items in lighttpd.conf: ## FreeBSD! server.event-handler = freebsd-kqueue server.network-backend= writev Scott, Lighttpd was already using freebsd-kqueue, but I added the writev network-backend and the problem went away. With this additional

Re: Possible scheduler (SCHED_ULE) bug?

2009-10-23 Thread Kostik Belousov
On Fri, Oct 23, 2009 at 04:28:59PM -0400, Dylan Cochran wrote: On 10/23/09, Jaime Bozza jbo...@mindsites.com wrote: I believe I found a problem with the ULE scheduler - At least the fact that there is a problem, but I'm not sure where to go from here. The system locks all processes, but

Re: Possible scheduler (SCHED_ULE) bug?

2009-10-23 Thread Jacob Myers
Jaime Bozza wrote: [snip] The additional information I have (over the PR) is that: 1) Files over 64K cause the problem, not just larger files I thought it was over 1 MB or so. But maybe I'm wrong. ISTR that I couldn't trigger it with some images of around 70K. 2) switching over to SCHED_4BSD