Re: svn commit: r253002 - head

2013-07-09 Thread Dmitry Morozovsky
On Mon, 8 Jul 2013, Garance A Drosehn wrote: I think it's probably helpful to point out the -j flag, but I'm not sure I would phrase it as if we're sure that the values here are the ideal ones. I expect the ideal values depend too much on hardware (e.g.: the CPU, type of disk used, and

Re: svn commit: r253002 - head

2013-07-09 Thread John Baldwin
On Monday, July 08, 2013 7:24:04 pm Garrett Cooper wrote: On Mon, Jul 8, 2013 at 2:13 PM, John Baldwin j...@freebsd.org wrote: On Monday, July 08, 2013 2:23:31 am Garrett Cooper wrote: On Sun, Jul 7, 2013 at 7:25 PM, Garrett Cooper yaneurab...@gmail.com wrote: On Jul 7, 2013, at 2:15 PM,

Re: svn commit: r253002 - head

2013-07-08 Thread Garrett Cooper
On Sun, Jul 7, 2013 at 7:25 PM, Garrett Cooper yaneurab...@gmail.com wrote: On Jul 7, 2013, at 2:15 PM, Alfred Perlstein alf...@freebsd.org wrote: On 7/7/13 2:01 PM, Garrett Cooper wrote: Why the magic number 12? Numbers higher seem to result in worse performance as reported by some

Re: svn commit: r253002 - head

2013-07-08 Thread John Baldwin
On Monday, July 08, 2013 2:23:31 am Garrett Cooper wrote: On Sun, Jul 7, 2013 at 7:25 PM, Garrett Cooper yaneurab...@gmail.com wrote: On Jul 7, 2013, at 2:15 PM, Alfred Perlstein alf...@freebsd.org wrote: On 7/7/13 2:01 PM, Garrett Cooper wrote: Why the magic number 12? Numbers

Re: svn commit: r253002 - head

2013-07-08 Thread Garrett Cooper
On Mon, Jul 8, 2013 at 2:13 PM, John Baldwin j...@freebsd.org wrote: On Monday, July 08, 2013 2:23:31 am Garrett Cooper wrote: On Sun, Jul 7, 2013 at 7:25 PM, Garrett Cooper yaneurab...@gmail.com wrote: On Jul 7, 2013, at 2:15 PM, Alfred Perlstein alf...@freebsd.org wrote: On 7/7/13 2:01

Re: svn commit: r253002 - head

2013-07-08 Thread Alfred Perlstein
On 7/8/13 4:24 PM, Garrett Cooper wrote: On Mon, Jul 8, 2013 at 2:13 PM, John Baldwin j...@freebsd.org wrote: On Monday, July 08, 2013 2:23:31 am Garrett Cooper wrote: On Sun, Jul 7, 2013 at 7:25 PM, Garrett Cooper yaneurab...@gmail.com wrote: On Jul 7, 2013, at 2:15 PM, Alfred Perlstein

Re: svn commit: r253002 - head

2013-07-08 Thread Teske, Devin
On Jul 7, 2013, at 2:15 PM, Alfred Perlstein wrote: On 7/7/13 2:01 PM, Garrett Cooper wrote: Why the magic number 12? Numbers higher seem to result in worse performance as reported by some members of my team. We've run as high as -j48 ... number of logical cpu's times-two (it was on a

Re: svn commit: r253002 - head

2013-07-08 Thread Garrett Cooper
On Jul 8, 2013, at 5:12 PM, Teske, Devin wrote: On Jul 7, 2013, at 2:15 PM, Alfred Perlstein wrote: On 7/7/13 2:01 PM, Garrett Cooper wrote: Why the magic number 12? Numbers higher seem to result in worse performance as reported by some members of my team. We've run as high as -j48

Re: svn commit: r253002 - head

2013-07-08 Thread Garance A Drosehn
On 7/7/13 4:39 PM, Alfred Perlstein wrote: Log: Document tip on how to build all kernels quickly. Modified: head/Makefile == --- head/Makefile Sun Jul 7 19:58:14 2013(r253001) +++ head/Makefile

Re: svn commit: r253002 - head

2013-07-08 Thread Simon J. Gerraty
We've run as high as -j48 ... number of logical cpu's times-two (it was o= n a box with 24 logical CPUs). We've (ok dhw@ has) done a lot of empirical measurement to determine optimal jobs_factor numbers for various machines. Right now we are using .75 for boxes with 16 cores. For smaller boxes

Re: svn commit: r253002 - head

2013-07-08 Thread Peter Wemm
On Mon, Jul 8, 2013 at 5:12 PM, Teske, Devin devin.te...@fisglobal.com wrote: On Jul 7, 2013, at 2:15 PM, Alfred Perlstein wrote: On 7/7/13 2:01 PM, Garrett Cooper wrote: Why the magic number 12? Numbers higher seem to result in worse performance as reported by some members of my team.

svn commit: r253002 - head

2013-07-07 Thread Alfred Perlstein
Author: alfred Date: Sun Jul 7 20:39:11 2013 New Revision: 253002 URL: http://svnweb.freebsd.org/changeset/base/253002 Log: Document tip on how to build all kernels quickly. Modified: head/Makefile Modified: head/Makefile

Re: svn commit: r253002 - head

2013-07-07 Thread Garrett Cooper
Why the magic number 12? Sent from my iPhone On Jul 7, 2013, at 1:39 PM, Alfred Perlstein alf...@freebsd.org wrote: Author: alfred Date: Sun Jul 7 20:39:11 2013 New Revision: 253002 URL: http://svnweb.freebsd.org/changeset/base/253002 Log: Document tip on how to build all kernels

Re: svn commit: r253002 - head

2013-07-07 Thread Alfred Perlstein
On 7/7/13 2:40 PM, Andriy Gapon wrote: on 08/07/2013 00:15 Alfred Perlstein said the following: On 7/7/13 2:01 PM, Garrett Cooper wrote: Why the magic number 12? Numbers higher seem to result in worse performance as reported by some members of my team. Should we really commit all notes to

Re: svn commit: r253002 - head

2013-07-07 Thread Alexey Dokuchaev
On Mon, Jul 08, 2013 at 01:02:39AM +0300, Andriy Gapon wrote: I am sure that the next time you need to run the same thing you'll remember where you put the comment and you'll copy/paste from it. I am sure that if any other developer runs into the same situation, then he will: - google - ask

Re: svn commit: r253002 - head

2013-07-07 Thread Garrett Cooper
On Jul 7, 2013, at 2:15 PM, Alfred Perlstein alf...@freebsd.org wrote: On 7/7/13 2:01 PM, Garrett Cooper wrote: Why the magic number 12? Numbers higher seem to result in worse performance as reported by some members of my team. The suggestion is good in spirit, but this doesn't justify