OpenBSD Journal
Home : : Add Story : : Archives : : About : : Create Account : : Login :
Comments

<< Re: Developer blog: cnst@: fixing make | Up: Re: Developer blog: cnst@: fixing make | Flattened | Expanded | Re: Developer blog: cnst@: fixing make >>

Threshold: Help

  speed increase due to -j16 as opposed to default -B (mod 7/35)
by cnst (cnst) on Tue Jun 19 20:54:45 2007 (GMT)
http://cnst.livejournal.com/24068.html#chart
  > How much of a speed increase is this? Are we talking like a double in compile speed because you can multithread?

The difference is substantial -- on Intel Core 2 Duo E4300, the time it takes to build OpenBSD's kernel with -B is 4:45, but with -j16 it's only 2:36, i.e. just under 3 minutes, and almost a two-fold decrease in elapsed time. See the link under my name above for some simple benchmarking that I've performed.
  [ Show thread ] [ Reply to this comment ] [ Mod Up ] [ Mod Down ]

[ Home | Add Story | Archives | Polls | About ]

Copyright © 2004-2008 Daniel Hartmeier. All rights reserved. Articles and comments are copyright their respective authors, submission implies license to publish on this web site. Contents of the archive prior to April 2nd 2004 as well as images and HTML templates were copied from the fabulous original deadly.org with Jose's and Jim's kind permission. Some icons from slashdot.org used with permission from Kathleen. This journal runs as CGI with httpd(8) on OpenBSD, the source code is BSD licensed. Search engine is ht://Dig. undeadly \Un*dead"ly\, a. Not subject to death; immortal. [Obs.]