Date: Sun, 25 Jun 2006 15:23:45 -0700 From: "Nikolas Britton" <nikolas.britton@gmail.com> To: freebsd-stable@freebsd.org Cc: Sean Bryant <bryants@gmail.com> Subject: Re: Gigabit ethernet very slow. Message-ID: <ef10de9a0606251523h4102e782m1fe2403c57c80e57@mail.gmail.com> In-Reply-To: <ef10de9a0606250930k6b655e2bkb81694905454bf58@mail.gmail.com> References: <ef10de9a0606250157jce24553h52e67db7a9f76b03@mail.gmail.com> <f6791cc60606250835p51c966e7xa12fb241c9aaab8d@mail.gmail.com> <ef10de9a0606250930k6b655e2bkb81694905454bf58@mail.gmail.com>
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On 6/25/06, Nikolas Britton <nikolas.britton@gmail.com> wrote: > On 6/25/06, Sean Bryant <bryants@gmail.com> wrote: > > /dev/zero not exactly the best way to test sending data across the > > network. Especially since you'll be reading a 8k chunks. > > > > I could be wrong, strong possibility that I am. I only got 408mb when > > doing a /dev/zero test. I've managed to saturate though. Using other > > software that I wrote. > > On 6/25/06, Nikolas Britton <nikolas.britton@gmail.com> wrote: > > > What's up with my computer, it's only getting 30MB/s? > > > > > > hostB: nc -4kl port > /dev/null > > > hostA: nc host port < /dev/zero > > > > > 408MByte/s or 408Mbit/s and what measuring stick are you using? I'm > trying to rule in/out problems with the disks, I'm only getting > ~25MB/s on a 6 disk RAID0 over the network... would it be better to > setup an memory backed disk, md(4) , to read from? > > Now I'm getting 523.2Mbit/s (65.4MB/s) with netcat, I wiped out the FreeBSD 6.1/amd64 install with FreeBSD 6.1/i386... and... After a kernel rebuild (recompiled nc too): CPUTYPE?=athlon-mp CFLAGS+= -mtune=athlon64 COPTFLAGS+= -mtune=athlon64 I'm up to 607.2Mbit/s (75.9MB/s). What else can I do to get that number higher, and how can I get interrupts lower? Before recompile: load averages: 0.94, 0.91, 0.66 CPU states: 2.6% user, 0.0% nice, 21.5% system, 64.6% interrupt, 11.3% idle ------------------- After recompile: load averages: 0.99, 0.96, 0.76 CPU states: 3.0% user, 0.0% nice, 33.7% system, 58.2% interrupt, 5.1% idle -- BSD Podcasts @: http://bsdtalk.blogspot.com/ http://freebsdforall.blogspot.com/
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