From: seth vidal Subject: 2.4.18-5 server and client with < 2.4.18-5 read slowness Date: 23 Jul 2002 18:25:26 -0400 Sender: nfs-admin@lists.sourceforge.net Message-ID: <1027463126.28462.104.camel@opus> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-umd2o+WOFYUEh+6gp8Va" Return-path: Received: from mail.phy.duke.edu ([152.3.182.2]) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 17X860-0005F1-00 for ; Tue, 23 Jul 2002 15:25:32 -0700 Received: from opus.phy.duke.edu (opus.phy.duke.edu [152.3.182.42]) by mail.phy.duke.edu (Postfix) with ESMTP id 95215303C3 for ; Tue, 23 Jul 2002 18:25:26 -0400 (EDT) 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: --=-umd2o+WOFYUEh+6gp8Va Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Hi all, I've been trying to sort out the problems with rhl 7.3 2.4.18-5. I've got the mounts using rsize and wsize of 8192 and in async mount (and async export on the server (for testing nfs speed, not disk speed)) What I've found is this: if the server is 2.4.18-5 the read and write performance is fine with either older kernels or 2.4.18-5 (on 100tx cards 9-10MB/s on read and write w/multiple threads) If the server is < 2.4.18-5 the performance for clients 2.4.18-5+ is good for writes, lousy for reads, but the performance for < 2.4.18-5 clients is good for both reads and writes. (2MB/s read performance and 9-10MB/s write performance) Is this occurring b/c of the rpc congestion fixes that went into the client for 2.4.18-5+ or is it related to the rpc_ping function (which appears to be showing up A LOT in the tcpdumps of traffic b/t the two machines) Is it likely that the newer clients will just not be happy with older servers b/c of the changes to the client code? Is there any way to work around this? -sv --=-umd2o+WOFYUEh+6gp8Va Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQA9PdfW1Aj3x2mIbMcRAqshAJ0YnOVe5c2z0Oy0FYa8DLUNgomkjACfWkTu dgjBy0BlL8XKduFBnjGGUk8= =mrAi -----END PGP SIGNATURE----- --=-umd2o+WOFYUEh+6gp8Va-- ------------------------------------------------------- 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