Date: Thu, 15 Nov 2007 23:07:28 -0500 From: Chuck Robey <chuckr@chuckr.org> To: Jonathan Horne <freebsd@dfwlp.com> Cc: freebsd-questions@freebsd.org Subject: Re: unimpressive buildworld time Message-ID: <473D1780.104@chuckr.org> In-Reply-To: <200711151935.10550.freebsd@dfwlp.com> References: <b41c75520711140856m3b082903l2378140d8cd394cb@mail.gmail.com> <473B6AF1.4010604@smo.de> <473B6C63.9060407@gmail.com> <200711151935.10550.freebsd@dfwlp.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Jonathan Horne wrote: > On Wednesday 14 November 2007 03:45:07 pm Aryeh M. Friedman wrote: >>> Impressive ;-) My main machine (with an Athlon XP @ 2GHz) takes ~2 >>> hours to build kernel and world (I use a script to do that). My >>> other box is running -CURRENT and takes ~11 hours to build kernel >>> and world (Celeron 500...). >>> >>> Just to supply some numbers that "go the other direction" :-) >> With no -j and running gnome and doing other things in the foreground >> (watching a avi) 1 hr 3 mins on a e6850 w/ 4 gig (amd64) > > p4 540 3.2GHz, 1GB ram: > > -------------------------------------------------------------- >>>> World build completed on Thu Nov 15 19:15:05 CST 2007 > -------------------------------------------------------------- > > real 63m8.635s > user 102m44.096s > sys 10m44.889s > [root@athena /usr/src]# I have a quad core machine, and I found that (after a bit of checking) that about 95% of my improvements could be cotten with a -j4 setting. It did keep on improving, but only very little, up to -j8. AT -j8 it was about 18 minutes. I do have more accurate numbers, if folks are curious. I did buildworlds, so no kernel built, and the environment was with all the files from a previous build in place. > heh, i have appropriately renamed the thread. :) with -j 8 > > cheers,
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?473D1780.104>