Date: Thu, 18 Dec 2003 14:05:44 -0600 From: Eric Anderson <anderson@centtech.com> To: Nuno Teixeira <nunotex@freeshell.org> Cc: freebsd-current@freebsd.org Subject: Re: Any reasons to change BSD scheduler: SCHED_4BSD to SCHED_ULE? Message-ID: <3FE20898.6050104@centtech.com> In-Reply-To: <20031218194326.GA12548@SDF.LONESTAR.ORG> References: <20031218194326.GA12548@SDF.LONESTAR.ORG>
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Nuno Teixeira wrote: >Hello to all, > >I'm using 5.2 RC and I'd like to know if are good reasons to change my >sheduler to the new one on a UP machine. > > Well, just my $0.02, but last night, while doing some heavy cpu/io stuff, I noticed that _ULE is in action - I was running mencoder, xmms, ftp'ing a file locally (100mbit), using a handful of xterm's, and my usual batch of stuff (netscape/mozilla, gaim, etc) - and I noticed the machine (even though it was heavily loaded) was VERY responsive, and I hardly even noticed any load on it at all. Now, under SCHED_4BSD, I definitely would have noticed.. I know because I went back to 4BSD for a few days when trying to hunt down a bug, and that's when I realized there really is a difference.. But, ymmv.. Eric -- ------------------------------------------------------------------ Eric Anderson Systems Administrator Centaur Technology All generalizations are false, including this one. ------------------------------------------------------------------
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