Date: Mon, 8 Dec 2003 12:49:53 -0800 (PST) From: Doug White <dwhite@gumbysoft.com> To: Gordon Bergling <gordon@bsd-network.org> Cc: freebsd-current@freebsd.org Subject: Re: strange pids under heavy load (5.2-RC) Message-ID: <20031208124805.Y15361@carver.gumbysoft.com> In-Reply-To: <20031208200906.GA49037@nemesis.md.0xfce3.net> References: <20031208200906.GA49037@nemesis.md.0xfce3.net>
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On Mon, 8 Dec 2003, Gordon Bergling wrote: > Hi, > > I run 'make -j 32 buildkernel' to stressing my fresh 5.2-RC installation a > little bit and saw some strange pids in a 'ps ax'. (The output of 'ps > ax' is stripped down.) > > ----------------------------------------------------------------------- > 24111 p2 S+ 0:00.81 make -j 32 buildkernel KERNCONF=NEMESIS-UP > > 0 p2 ZW+ 0:00.00 (sh) These are normal. make just hasn't gotten around to clearing these yet. make spawns and reaps processes in groups rather than keeping the -j number busy at all times. Note that -j32 is much more than the system can paralleize. I start getting dimishing returns past -j4, even on dual proc systems. When you hit the rescue build you will be SORRY :) If you want to do load tests, launch multiple parallel buildworlds with differing MAKEOBJDIRPREFIX. -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org
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