From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: linux-nfs-owner@vger.kernel.org Received: from cantor2.suse.de ([195.135.220.15]:37900 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757338Ab2HQO1l (ORCPT ); Fri, 17 Aug 2012 10:27:41 -0400 Message-ID: <502E54D3.4010103@suse.com> Date: Fri, 17 Aug 2012 19:57:31 +0530 From: Suresh Jayaraman MIME-Version: 1.0 To: Trond.Myklebust@netapp.com, chuck.lever@oracle.com Cc: linux-nfs@vger.kernel.org Subject: Slowing down state manager after unhandled error Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-nfs-owner@vger.kernel.org List-ID: Hi Trond and Chuck, Recently, we have had a report on production SLES system where the system's CPU utilization went very high due to the state manager constantly sending huge number of requests every second due to an unhandled error. The following patch from Chuck https://patchwork.kernel.org/patch/1185421/ mitigated this issue. Would be interested to know whether this patch queued up already or you see any problem with the approach. Thanks Suresh