Date: Fri, 26 Aug 2005 15:21:24 +0100 From: Chris <chrcoluk@gmail.com> To: Mark Kane <mark@mkproductions.org> Cc: freebsd-questions@freebsd.org Subject: Re: Performance Issues with AMD64 3000+, 1.5GB RAM, FreeBSD 5.4-RELEASE Message-ID: <3aaaa3a050826072145276bec@mail.gmail.com> In-Reply-To: <430E55E4.9080106@mkproductions.org> References: <20050825160909.GB10134@slackbox.xs4all.nl> <430E0461.3030101@mkproductions.org> <20050825181931.GE10790@slackbox.xs4all.nl> <430E105D.3080509@mkproductions.org> <20050825200838.GA18166@slackbox.xs4all.nl> <430E294C.2080207@mkproductions.org> <20050825213846.GA715@slackbox.xs4all.nl> <430E3BDB.5040600@mkproductions.org> <20050825214938.GC715@slackbox.xs4all.nl> <430E55E4.9080106@mkproductions.org>
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On 26/08/05, Mark Kane <mark@mkproductions.org> wrote: > Roland Smith wrote: > > On Thu, Aug 25, 2005 at 04:44:59PM -0500, Mark Kane wrote: > >>Okay, I may try that later then. STABLE is just about done on that > >>Athlon XP 2000+ machine. > > > > > > Fingers crossed :-) >=20 > Well Hmmm.... I've got -STABLE running on the 5.4-RELEASE i386 AMD > Athlon XP 2000+ machine with 256MB RAM. I untar Firefox sources, and the > improvement is noticeable within 3 seconds. When doing the same > operation before or here on my amd64 (5.4-RELEASE) it starts freezing > the screen, sound, and other things (Hard to describe the sound noise, > but it sounds like a "ERRRRRRRRRRRRRRR-R-R-R-R-RRRR" stutter). >=20 > I increased the XMMS buffer from 3000 to the value on your site (haven't > done the sysctl one yet) and it made the skips that were happening > during untarring reduce greatly. There are still a few skips and slight > stuttering, but before when doing the same operation it was completely > un-listenable and unresponsive. >=20 > I'm even tarring the Firefox source back up with bzip2 now to try. It's > going quite slowly, but that's probably due to low RAM, as well as an > older, slower, UDMA66 hard drive. 608K of real mem free and using up > 50MB of swap, it's still sounding pretty good with minimal skips. >=20 > I'm listening to a stream from my Athlon XP 2000+ in my left ear (via a > headphone) and the same stream on the speakers here from my amd64. I > hear occasional skips in the audio from the amd64 5.4-RELEASE box as I'm > just typing this email, but while the other -STABLE box is semi-idle (X, > Xfce, Firefox with 40 tabs open) I don't hear many skips at all. It's > not perfect, but a huge improvement. >=20 > I'm wondering what changed in 5-STABLE to make this so much better. I > thought the fix was in 6 (Unless it was MFC)? >=20 > This much improvement almost makes me want to just upgrade this amd64 > box to -STABLE and start using it now. I just want to be sure it's > stable enough for my use. >=20 > Thanks again for all the input :). >=20 > -Mark >=20 >=20 > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.o= rg" >=20 Try these in kernel OPTIONS DIRECTIO OPTIONS NO_ADAPTIVE_MUTEXES and commenting options ADAPTIVE_GIANT and disable apic. Tell me if that imporves or makes worse. Chris
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