Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-11 Thread Arnaud Lacombe
Hi, On Thu, Jul 7, 2011 at 7:45 PM, Adrian Chadd adr...@freebsd.org wrote: (OT, yes, but I'd like to take a stab at explaining why these things fall to the wayside..) On 7 July 2011 12:08, Arnaud Lacombe lacom...@gmail.com wrote: What would be the point to even start looking at an issue?

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-11 Thread Steve Kargl
On Mon, Jul 11, 2011 at 04:33:44PM -0400, Arnaud Lacombe wrote: For the record, I would like to see enforced public review for _every_ patch *before* it is checked in, as a strong rule. gcc system is particularly interesting. But it is not likely to happen in FreeBSD where FreeBSD committers

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-11 Thread Arnaud Lacombe
Hi, On Mon, Jul 11, 2011 at 4:40 PM, Steve Kargl s...@troutmask.apl.washington.edu wrote: On Mon, Jul 11, 2011 at 04:33:44PM -0400, Arnaud Lacombe wrote: For the record, I would like to see enforced public review for _every_ patch *before* it is checked in, as a strong rule. gcc system is

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-11 Thread Arnaud Lacombe
Hi, [re-sent publicly, I did not Replied-to-all:)] On Mon, Jul 11, 2011 at 5:38 PM, Arnaud Lacombe lacom...@gmail.com wrote: Hi, On Mon, Jul 11, 2011 at 4:40 PM, Steve Kargl s...@troutmask.apl.washington.edu wrote: On Mon, Jul 11, 2011 at 04:33:44PM -0400, Arnaud Lacombe wrote: For the

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-11 Thread Steve Kargl
On Mon, Jul 11, 2011 at 05:50:44PM -0400, Arnaud Lacombe wrote: On Mon, Jul 11, 2011 at 5:38 PM, Arnaud Lacombe lacom...@gmail.com wrote: Hi, On Mon, Jul 11, 2011 at 4:40 PM, Steve Kargl s...@troutmask.apl.washington.edu wrote: On Mon, Jul 11, 2011 at 04:33:44PM -0400, Arnaud Lacombe

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-07 Thread Hartmann, O.
On 07/06/11 23:49, Oliver Pinter wrote: On 7/6/11, Hartmann, O.ohart...@zedat.fu-berlin.de wrote: On 07/06/11 21:36, Steve Kargl wrote: On Wed, Jul 06, 2011 at 03:18:35PM -0400, Arnaud Lacombe wrote: Hi, On Wed, Jul 6, 2011 at 12:28 PM, Steve Kargl s...@troutmask.apl.washington.edu wrote:

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-07 Thread perryh
Steve Kargl s...@troutmask.apl.washington.edu wrote: Let's face, ULE is not a silver bullet. Or perhaps it is, but this particular problem is so heavily armored as to demand depleted uranium :) ___ freebsd-questions@freebsd.org mailing list

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-07 Thread Ivan Voras
On 06/07/2011 20:11, Nathan Whitehorn wrote: I've seen exactly this problem with multi-threaded math libraries, as well. Using parallel GotoBLAS on FreeBSD gives terrible performance because the threads keep migrating between CPUs, causing frequent cache misses. On both schedulers?

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-07 Thread Adrian Chadd
(OT, yes, but I'd like to take a stab at explaining why these things fall to the wayside..) On 7 July 2011 12:08, Arnaud Lacombe lacom...@gmail.com wrote: What would be the point to even start looking at an issue? You guys (by you, I mean official committers on public list) don't care When

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Christer Solskogen
2011/7/6 O. Hartmann ohart...@zedat.fu-berlin.de: having performance issues Could you post /etc/sysctl.conf and /boot/loader.conf? Also, the output of uname -a on all machines would be nice. And since you don't use GENERIC, could you also tell us what difference your setup is from a GENERIC

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread arrowdodger
2011/7/6 O. Hartmann ohart...@zedat.fu-berlin.de When performing an update on the ports tree via portsnap fetch update or when checking out (or) large Subversion repositories or when copying large data files (~ 50 to 250 GB in size, results from numerical modelings) or when compiling world,

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Alexander Best
On Wed Jul 6 11, arrowdodger wrote: 2011/7/6 O. Hartmann ohart...@zedat.fu-berlin.de When performing an update on the ports tree via portsnap fetch update or when checking out (or) large Subversion repositories or when copying large data files (~ 50 to 250 GB in size, results from

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread O. Hartmann
On 07/06/11 12:37, arrowdodger wrote: 2011/7/6 O. Hartmannohart...@zedat.fu-berlin.de When performing an update on the ports tree via portsnap fetch update or when checking out (or) large Subversion repositories or when copying large data files (~ 50 to 250 GB in size, results from numerical

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Steve Kargl
On Wed, Jul 06, 2011 at 05:29:24PM +0200, O. Hartmann wrote: I use SCHED_ULE on all machines, since it is supposed to be performing better on multicore boxes, but there are lots of suggestions switching back to the old SCHED_4BSD scheduler. If you are using MPI in numerical codes, then

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Hartmann, O.
On 07/06/11 18:28, Steve Kargl wrote: On Wed, Jul 06, 2011 at 05:29:24PM +0200, O. Hartmann wrote: I use SCHED_ULE on all machines, since it is supposed to be performing better on multicore boxes, but there are lots of suggestions switching back to the old SCHED_4BSD scheduler. If you are

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Adrian Chadd
Has anyone re-run those IO benchmarks? Something smells fishy there.. (with the benchmarking.) adrian 2011/7/6 O. Hartmann ohart...@zedat.fu-berlin.de: On 07/06/11 12:37, arrowdodger wrote: 2011/7/6 O. Hartmannohart...@zedat.fu-berlin.de When performing an update on the ports tree via

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Steve Kargl
On Wed, Jul 06, 2011 at 06:38:23PM +0200, Hartmann, O. wrote: On 07/06/11 18:28, Steve Kargl wrote: On Wed, Jul 06, 2011 at 05:29:24PM +0200, O. Hartmann wrote: I use SCHED_ULE on all machines, since it is supposed to be performing better on multicore boxes, but there are lots of suggestions

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Poul-Henning Kamp
In message 20110706170132.ga68...@troutmask.apl.washington.edu, Steve Kargl w rites: I periodically ran the same type test in the 2008 post over the last three years. Nothing has changed. I even set up an account on one node in my cluster for jeffr to use. He was too busy to investigate at

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Steve Kargl
On Wed, Jul 06, 2011 at 05:05:41PM +, Poul-Henning Kamp wrote: In message 20110706170132.ga68...@troutmask.apl.washington.edu, Steve Kargl w rites: I periodically ran the same type test in the 2008 post over the last three years. Nothing has changed. I even set up an account on one

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Steve Kargl
On Wed, Jul 06, 2011 at 03:18:35PM -0400, Arnaud Lacombe wrote: Hi, On Wed, Jul 6, 2011 at 12:28 PM, Steve Kargl s...@troutmask.apl.washington.edu wrote: On Wed, Jul 06, 2011 at 05:29:24PM +0200, O. Hartmann wrote: I use SCHED_ULE on all machines, since it is supposed to be performing

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Arnaud Lacombe
Hi, On Wed, Jul 6, 2011 at 12:28 PM, Steve Kargl s...@troutmask.apl.washington.edu wrote: On Wed, Jul 06, 2011 at 05:29:24PM +0200, O. Hartmann wrote: I use SCHED_ULE on all machines, since it is supposed to be performing better on multicore boxes, but there are lots of suggestions switching

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Hartmann, O.
On 07/06/11 21:36, Steve Kargl wrote: On Wed, Jul 06, 2011 at 03:18:35PM -0400, Arnaud Lacombe wrote: Hi, On Wed, Jul 6, 2011 at 12:28 PM, Steve Kargl s...@troutmask.apl.washington.edu wrote: On Wed, Jul 06, 2011 at 05:29:24PM +0200, O. Hartmann wrote: I use SCHED_ULE on all machines, since

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Nathan Whitehorn
On 07/06/11 13:00, Steve Kargl wrote: On Wed, Jul 06, 2011 at 05:05:41PM +, Poul-Henning Kamp wrote: In message20110706170132.ga68...@troutmask.apl.washington.edu, Steve Kargl w rites: I periodically ran the same type test in the 2008 post over the last three years. Nothing has changed.

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Oliver Pinter
On 7/6/11, Hartmann, O. ohart...@zedat.fu-berlin.de wrote: On 07/06/11 21:36, Steve Kargl wrote: On Wed, Jul 06, 2011 at 03:18:35PM -0400, Arnaud Lacombe wrote: Hi, On Wed, Jul 6, 2011 at 12:28 PM, Steve Kargl s...@troutmask.apl.washington.edu wrote: On Wed, Jul 06, 2011 at 05:29:24PM

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Adrian Chadd
Offer a bounty for getting it fixed? thanks, Adrian On 7 July 2011 05:00, Hartmann, O. ohart...@zedat.fu-berlin.de wrote: On 07/06/11 21:36, Steve Kargl wrote: On Wed, Jul 06, 2011 at 03:18:35PM -0400, Arnaud Lacombe wrote: Hi, On Wed, Jul 6, 2011 at 12:28 PM, Steve Kargl

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Steve Kargl
On Thu, Jul 07, 2011 at 09:17:51AM +0800, Adrian Chadd wrote: Offer a bounty for getting it fixed? steve == ENOMONEY jeffr == ENOTIME And, 4BSD works. -- Steve ___ freebsd-questions@freebsd.org mailing list

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Adrian Chadd
On 7 July 2011 09:51, Steve Kargl s...@troutmask.apl.washington.edu wrote: On Thu, Jul 07, 2011 at 09:17:51AM +0800, Adrian Chadd wrote: Offer a bounty for getting it fixed? steve == ENOMONEY jeffr == ENOTIME And, 4BSD works. I meant it as a more general observation. If something doesn't

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Steve Kargl
On Thu, Jul 07, 2011 at 10:39:00AM +0800, Adrian Chadd wrote: On 7 July 2011 09:51, Steve Kargl s...@troutmask.apl.washington.edu wrote: On Thu, Jul 07, 2011 at 09:17:51AM +0800, Adrian Chadd wrote: Offer a bounty for getting it fixed? steve == ENOMONEY jeffr == ENOTIME And, 4BSD

Re: Heavy I/O blocks FreeBSD box for several seconds

2011-07-06 Thread Arnaud Lacombe
Hi, On Wed, Jul 6, 2011 at 10:39 PM, Adrian Chadd adr...@freebsd.org wrote: On 7 July 2011 09:51, Steve Kargl s...@troutmask.apl.washington.edu wrote: On Thu, Jul 07, 2011 at 09:17:51AM +0800, Adrian Chadd wrote: Offer a bounty for getting it fixed? steve == ENOMONEY jeffr == ENOTIME