From: "Kevin Coffman" Subject: Re: "used greatest stack depth: n bytes left" messages Date: Wed, 12 Sep 2007 08:10:04 -0400 Message-ID: <4d569c330709120510o3146454bo44b0a83cc01a6a99@mail.gmail.com> References: <46E7CD31.4080306@bull.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: nfs@lists.sourceforge.net, nfsv4 To: "Le Rouzic" Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1IVR2h-0008B3-PR for nfs@lists.sourceforge.net; Wed, 12 Sep 2007 05:10:03 -0700 Received: from rv-out-0910.google.com ([209.85.198.189]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1IVR2l-0000ES-Ch for nfs@lists.sourceforge.net; Wed, 12 Sep 2007 05:10:08 -0700 Received: by rv-out-0910.google.com with SMTP id g11so597118rvb for ; Wed, 12 Sep 2007 05:10:05 -0700 (PDT) In-Reply-To: <46E7CD31.4080306@bull.net> List-Id: "Discussion of NFS under Linux development, interoperability, and testing." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nfs-bounces@lists.sourceforge.net Errors-To: nfs-bounces@lists.sourceforge.net On 9/12/07, Le Rouzic wrote: > > > > Hi, > > Since 2.6.23-RC5 we can get the following kind of messages in > /var/log/messages: > > Sep 11 12:22:40 frec kernel: loadkeys used greatest stack depth: 4568 > bytes left > Sep 11 12:22:40 frec kernel: rc.sysinit used greatest stack depth: 4448 > bytes left > Sep 11 12:22:40 frec kernel: readahead used greatest stack depth: 4264 > bytes left > Sep 11 13:38:36 frec kernel: mount.nfs4 used greatest stack depth: 4088 > bytes left > Sep 11 17:12:08 frec kernel: mount.nfs4 used greatest stack depth: 3512 > bytes left > > Are there only WARNINGs? > Does that mean we need to act on some kernel parameter ? Which one? > Can we conclude anything is not normal? > How nfsv4 can be impacted in its behavior? > > Cheers You must have changed your kernel configuration to include stack debugging? This message comes from kerne/exit.c and is #ifdef'd with CONFIG_DEBUG_STACK_USAGE. So it seems to be more of a debug warning. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs