From owner-freebsd-stable Thu Jun 11 17:01:13 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA06603 for freebsd-stable-outgoing; Thu, 11 Jun 1998 17:01:13 -0700 (PDT) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from mx.calweb.com (mx.calweb.com [208.131.56.81]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA06576 for ; Thu, 11 Jun 1998 17:01:04 -0700 (PDT) (envelope-from rdugaue@calweb.com) Received: by mx.calweb.com (8.8.6/8.8.6) with SMTP id RAA20260; Thu, 11 Jun 1998 17:00:45 -0700 (PDT) X-SMTP: helo web2.calweb.com from rdugaue@calweb.com server rdugaue@web2.calweb.com ip 208.131.56.52 Date: Thu, 11 Jun 1998 17:00:44 -0700 (PDT) From: Robert Du Gaue Reply-To: Robert Du Gaue To: Doug Russell cc: "Viren R. Shah" , stable@FreeBSD.ORG Subject: Re: NFS server performance (was: NFS performance benchmarks?) In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > Writing the 20 Megabyte file, 'iozone.tmp'...46.320312 seconds > Reading the file...25.390625 seconds > > IOZONE performance measurements: > 452749 bytes/second for writing the file > 825955 bytes/second for reading the file There's gotta be something screwy somewhere. Here's what I'm getting over NFS to a PPro-200 System with a SCSI-to-SCSI RAID (16MB cache) from Artecon: Writing the 50 Megabyte file, 'iozone.tmp'...23.679688 seconds Reading the file...18.742188 seconds IOZONE performance measurements: 2214083 bytes/second for writing the file 2797368 bytes/second for reading the file The NFS server is 100Base-T Full Duplex, the client I ran iozone on was 10-BaseT half duplex. Both are connected to an Intel 510T 10/100 switch. Running the same test on a client that is also 100Base-T Full Duplex on the same switch results in: Writing the 50 Megabyte file, 'iozone.tmp'...18.515625 seconds Reading the file...8.375000 seconds IOZONE performance measurements: 2831597 bytes/second for writing the file 6260155 bytes/second for reading the file I would look at your NIC cards, the HUB/Switch (if any), and cache in the RAID controller as possible bottlenecks. ----- For comparison... The Artecon is a pretty fast RAID system from what I can see. Doing an iozone local to the NFS on the RAID gets: Writing the 256 Megabyte file, 'iozone.tmp'...25.164062 seconds Reading the file...11.546875 seconds IOZONE performance measurements: 10667413 bytes/second for writing the file 23247454 bytes/second for reading the file -------------------------------------------------------------------------- Robert Du Gaue - rdugaue@calweb.com http://www.calweb.com President, CalWeb Internet Services Inc. (916) 641-9320 -------------------------------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message