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 wrote: > > Hi, > > > > On Mon, Jul 11, 2011 at 4:40 PM, Steve Kargl > > wrote: > >> On Mon, Jul 11, 2011 at 04:33:44PM -0400, Arnaud Lacombe wrote: > >>> > >>> For the record, I wo

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 wrote: > Hi, > > On Mon, Jul 11, 2011 at 4:40 PM, Steve Kargl > wrote: >> On Mon, Jul 11, 2011 at 04:33:44PM -0400, Arnaud Lacombe wrote: >>> >>> For the record, I would like to see enforced pub

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 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 >> particularly interesting. B

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 commit

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 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 wrote: > >> What would be the point to even start looking at an issue? You guys >> (by "you", I mean

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 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 someone who h

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 perryh
Steve Kargl 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 http://lists.freebsd.org/mailman/listinfo/f

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. 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 wrote: On Wed, Jul 06, 2011 at 05:29:24PM +0200, O. Hartmann wrote

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 wrote: > On 7 July 2011 09:51, Steve Kargl 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

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 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 me

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

2011-07-06 Thread Adrian Chadd
On 7 July 2011 09:51, Steve Kargl 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 work as needed, consid

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 http://lists.freebsd.org/mailman/lis

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. 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 >>>  wrote: O

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

2011-07-06 Thread Oliver Pinter
On 7/6/11, Hartmann, O. 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 >>> wrote: On Wed, Jul 06, 2011 at 05:29:24PM +0200, O. Hartmann wrote: > I use SCHED_UL

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 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.

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 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 b

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 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_4B

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 > 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 multicor

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

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 a

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 sugge

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 : > On 07/06/11 12:37, arrowdodger wrote: >> >> 2011/7/6 O. Hartmann >> >>> When performing an update on the ports tree via "portsnap fetch update" >>> or >>> when checking

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 usin

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, th

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. Hartmann 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 compilin

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 > > > 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

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

2011-07-06 Thread arrowdodger
2011/7/6 O. Hartmann > 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, FreeBD 9.0 and FreeBSD

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

2011-07-06 Thread Christer Solskogen
2011/7/6 O. Hartmann : 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 kernel? -- chs,