Date: Thu, 18 Nov 2004 09:22:34 -0800 From: Aaron Glenn <aaron.glenn@gmail.com> To: =?ISO-8859-1?Q?Arne_W=F6rner?= <arne_woerner@yahoo.com> Cc: freebsd-performance@freebsd.org Subject: Re: I've ran out of ideas Message-ID: <18f6019404111809224fb97c06@mail.gmail.com> In-Reply-To: <20041118105543.10295.qmail@web41208.mail.yahoo.com> References: <20041118101026.55888.qmail@web14121.mail.yahoo.com> <20041118105543.10295.qmail@web41208.mail.yahoo.com>
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d# dd if=/dev/ad2s1 of=/dev/null bs=64k count=1000 1000+0 records in 1000+0 records out 65536000 bytes transferred in 1.353203 secs (48430278 bytes/sec) d# iostat has never gone above 3.8MB/s aaron.glenn On Thu, 18 Nov 2004 02:55:43 -0800 (PST), Arne Wörner <arne_woerner@yahoo.com> wrote: > > > > > I'm pushing large files via thttpd over low-end > > > hardware (celeron > > > 1.8GHz, 512MB RAM, UATA 100 drive) and, out of the > > > box, FreeBSD > > > 5.3-RELEASE topped out at 40Mbps sustained. After > > > creating a separate > > > partition with a much larger blocksize, it's hit > > > 50Mbps sustained but > > > won't go past 54Mbps at all. > > > > You could try adding/tweaking HZ to 1000/2000 in > > kernel and add kern.polling.enable=1 to > > /etc/sysctl.conf. > > > Here I would like to mention the man page polling(4) for clarification (it does > not look like the GENERIC kernel can do polling...). > > Furthermore I would like to know, how fast is a "dd if=/dev/discXY of=/dev/null > bs=64k count=1000" in single user mode on your box (I can do 42.8MByte/sec with > UDMA-100 and ST340015A (Seagate?))... > > -Arne > > > __________________________________ > Do you Yahoo!? > The all-new My Yahoo! - Get yours free! > http://my.yahoo.com > >help
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