Return-Path: Received: from fieldses.org ([174.143.236.118]:53402 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756146Ab1FGXH5 (ORCPT ); Tue, 7 Jun 2011 19:07:57 -0400 Date: Tue, 7 Jun 2011 19:07:54 -0400 To: Vladimir Elisseev Cc: Trond Myklebust , linux-nfs@vger.kernel.org Subject: Re: NFS3 + kerberos: performance issues Message-ID: <20110607230754.GF13911@fieldses.org> References: <1307086159.1052.19.camel@vovan.net.home> <1307104354.2477.17.camel@lade.trondhjem.org> <1307123836.1052.23.camel@vovan.net.home> Content-Type: text/plain; charset=us-ascii In-Reply-To: <1307123836.1052.23.camel@vovan.net.home> From: "J. Bruce Fields" Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 On Fri, Jun 03, 2011 at 07:57:16PM +0200, Vladimir Elisseev wrote: > There's no mount command involved in timing. It's simply copy of the > same directory (with many small files to NFS share with and without > sec=krb5 mount option. Weird. I wonder if the krb5 principal is being mapped to a different user on the server side, and that's making some difference. Still, could you give us the full details? (Exactly what commands are you running, what results do you see?) --b.