Date: Tue, 16 Aug 2005 10:13:59 +0200 From: Gary Jennejohn <garyj@jennejohn.org> To: freebsd-amd64@freebsd.org Subject: Re: to dual core or not to dual core... Message-ID: <200508160813.j7G8DxIt004943@peedub.jennejohn.org>
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Ken Gunderson writes > Anyhow, thanks for your input. Was hoping that maybe someone w/a dual > core rig could perhaps share some real world fbsd experience... Here are some things which I've noticed a) building ports in parallel is a much more pleasant experience. b) transcoding movies with dvdrip is much faster if one uses two passes because the first pass uses both cores and takes only about 1/3 as long. The second pass only seems to use one core, but that leaves the second core free to do other things. c) buildworld takes only half the time with -j2. I've tried higher -jX values but > 2 showed no real benefit. I have seen in top that the X server seems to run on one core while other things, e.g. a terminal, run on a different core. That can be good if the terminal is displaying lots of trace, for example. -- Gary Jennejohn / garyjATjennejohnDOTorg gjATfreebsdDOTorg garyjATdenxDOTde
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