From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Holsman Subject: a nfs configuration scalability question Date: Mon, 16 Sep 2002 12:11:59 -0700 Sender: nfs-admin@lists.sourceforge.net Message-ID: <3D862CFF.6080908@holsman.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Return-path: Received: from nat-206-16-4-197.cnet.com ([206.16.4.197] helo=localhost.localdomain) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 17r1IB-0000vD-00 for ; Mon, 16 Sep 2002 12:12:20 -0700 Received: from holsman.net (localhost [127.0.0.1]) by localhost.localdomain (Postfix) with ESMTP id 57BFB1004F9 for ; Mon, 16 Sep 2002 12:11:59 -0700 (PDT) To: nfs@lists.sourceforge.net Errors-To: nfs-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Unsubscribe: , List-Archive: OK.. first of all my apolagies if this is a *developer* only list. I'm running apache2 on rh-kernel on a quad processor machine. the docroot (where it grabs the HTML files) is being served off a netapp750 filer. what I'm finding is that under *any* load the runqueue goes up to ~700 and the cpu shows 100% idle. vmstat shows that all the procs are in 'blocked' state. now.. I've tweaked the nfs mount a tiny bit to make it read only, and have a rsize of 8k, but it didn't seem to make any difference. $ mount cn-sfo1-pma-filer1:/docroot on /var/httpd/online/docroot type nfs (ro,rsize=8192,nolock,addr=10.10.112.27,addr=10.10.112.27) the actual benchmark involves a HTTP client requesting a random URL which reads in 10 files (9 of which are the same for each request) on Solaris (where it is currenlty running) I can get ~1000 nfs ops/second (mainly lookups) so my questions: * what tools are there for me to monitor WTF is going on (ie.. cache hit rates inode hit rates) * can I tweak the cache/inode size * are there tweaks/kernel patches which will help client performance for my type of workload * am I being a complete dunderhead and missing something completely obivous (if so where should I RTFM ?) Thanks this nfs problem is a major roadblock for me, and would appreciate ANY pointers Ian Holsman ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs