Date: Mon, 09 Jun 2003 14:34:46 -0500 From: Eric Anderson <anderson@centtech.com> To: freebsd-performance@freebsd.org Subject: Slow disk write speeds over network Message-ID: <3EE4E156.6030603@centtech.com>
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Ok, I have a file server (NFS) running FreeBSD 4.8-RC1, which is having incredibly slow disk write speeds. Locally, doing something like: dd if=/dev/zero of=/partition/testfile Shows 14MB/s - which is what I expect.. However, ftping a file or cp'ing over NFS shows speeds less than 1MB/s - which is not what I would expect - it's got gigabit ethernet, and has very fast read times (via ftp or nfs) over the network. After looking around, I noticed (when doing a systat -vmstat), that the vnode information looked a little strange.. like so: 54120 desiredvnodes 49163 numvnodes 35903 freevnodes Shouldn't I have a higher "numvnodes" than "desiredvnodes"? What else am I missing here? I have built many FreeBSD NFS file servers, and this is the first time I've had a slow one. I suspect maybe a sysctl tweak I bumped upon building the machine, or possibly something I didn't tweak. Any hints? Eric -- ------------------------------------------------------------------ Eric Anderson Systems Administrator Centaur Technology Attitudes are contagious, is yours worth catching? ------------------------------------------------------------------
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