Re: Upper limit on make -j ?

2007-11-28 Thread Bruce Cran
Brian wrote: Isn't 1000 an unrealistically high value? Brian On a system with only 2 cores and 2GB RAM - yes. I'm not sure that even with a huge number of cores you'd get much benefit from running such a massively parallel make, unless the build system is more intelligent than I think it

Re: Upper limit on make -j ?

2007-11-28 Thread Kris Kennaway
Brian wrote: There's a thread on the -stable list about 8 cores being an issue in a very specific case. I couldn't imagine setting j to something more than 2x or 3x at the most of your available cores. So it's okay by you that freebsd utilities crash when you overload them? Not to me ;-)

Upper limit on make -j ?

2007-11-27 Thread Aryeh Friedman
Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld buildkernel installkernel seg faulting ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To

Re: Upper limit on make -j ?

2007-11-27 Thread Frank Shute
On Tue, Nov 27, 2007 at 03:25:52AM -0500, Aryeh Friedman wrote: Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld buildkernel installkernel seg faulting No. Where in the handbook or UPDATING does it tell you to build your system like that? --

Re: Upper limit on make -j ?

2007-11-27 Thread Kris Kennaway
Frank Shute wrote: On Tue, Nov 27, 2007 at 03:25:52AM -0500, Aryeh Friedman wrote: Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld buildkernel installkernel seg faulting No. Where in the handbook or UPDATING does it tell you to build your

Re: Upper limit on make -j ?

2007-11-27 Thread Andy Greenwood
Aryeh Friedman wrote: Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld buildkernel installkernel seg faulting I thought that the kernel builds couldn't be built using parallel jobs, that it might break something. Is that not true?

Re: Upper limit on make -j ?

2007-11-27 Thread Pieter de Goeje
On Tuesday 27 November 2007, Andy Greenwood wrote: Aryeh Friedman wrote: Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld buildkernel installkernel seg faulting I thought that the kernel builds couldn't be built using parallel jobs,

Re: Upper limit on make -j ?

2007-11-27 Thread Ivan Voras
Aryeh Friedman wrote: Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld buildkernel installkernel seg faulting Yes it is. Like others said, obtain as much information about the problem as you can (backtraces). Try to discover if it fails in

Re: Upper limit on make -j ?

2007-11-27 Thread Kris Kennaway
Andy Greenwood wrote: Aryeh Friedman wrote: Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld buildkernel installkernel seg faulting I thought that the kernel builds couldn't be built using parallel jobs, that it might break something. Is

Re: Upper limit on make -j ?

2007-11-27 Thread Frank Shute
On Tue, Nov 27, 2007 at 08:02:44PM +0100, Kris Kennaway wrote: Andy Greenwood wrote: Aryeh Friedman wrote: Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld buildkernel installkernel seg faulting I thought that the kernel builds

Re: Upper limit on make -j ?

2007-11-27 Thread Kris Kennaway
Frank Shute wrote: On Tue, Nov 27, 2007 at 08:02:44PM +0100, Kris Kennaway wrote: Andy Greenwood wrote: Aryeh Friedman wrote: Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld buildkernel installkernel seg faulting I thought that the kernel

Re: Upper limit on make -j ?

2007-11-27 Thread Bruce Cran
Pieter de Goeje wrote: On Tuesday 27 November 2007, Andy Greenwood wrote: Aryeh Friedman wrote: Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld buildkernel installkernel seg faulting I thought that the kernel builds couldn't be built using

Re: Upper limit on make -j ?

2007-11-27 Thread Brian
Isn't 1000 an unrealistically high value? Brian On Tue, 27 Nov 2007, Bruce Cran wrote: Pieter de Goeje wrote: On Tuesday 27 November 2007, Andy Greenwood wrote: Aryeh Friedman wrote: Before I file a PR I just want to know if it is worth it to file a PR for: make -j1000 buildworld

Re: Upper limit on make -j ?

2007-11-27 Thread Aryeh M. Friedman
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Brian wrote: Isn't 1000 an unrealistically high value? For the next few years maybe but with core counts going up I can easily see a 512 or 1024 core machine by say 2015.. i.e. Moore's law may not apply to single tasking chips any mores but it

Re: Upper limit on make -j ?

2007-11-27 Thread Brian
There's a thread on the -stable list about 8 cores being an issue in a very specific case. I couldn't imagine setting j to something more than 2x or 3x at the most of your available cores. Brian On Tue, 27 Nov 2007, Aryeh M. Friedman wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1