Return-Path: linux-nfs-owner@vger.kernel.org Received: from aserp1040.oracle.com ([141.146.126.69]:44445 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932254AbaLDRRe (ORCPT ); Thu, 4 Dec 2014 12:17:34 -0500 Message-ID: <5480971D.9010102@oracle.com> Date: Thu, 04 Dec 2014 09:17:17 -0800 From: Shirley Ma MIME-Version: 1.0 To: Jeff Layton , Trond Myklebust CC: Tejun Heo , NeilBrown , Linux NFS Mailing List , Linux Kernel mailing list , Al Viro Subject: Re: [RFC PATCH 00/14] nfsd/sunrpc: add support for a workqueue-based nfsd References: <1417544663-13299-1-git-send-email-jlayton@primarydata.com> <20141203121118.21a32fe1@notabene.brown> <20141202202946.1e0f399b@tlielax.poochiereds.net> <20141203155649.GB5013@htj.dyndns.org> <20141203110405.5ecc85df@tlielax.poochiereds.net> <20141203140202.7865bedb@tlielax.poochiereds.net> <20141203142034.5c14529d@tlielax.poochiereds.net> <20141203152147.2ca6c6fd@tlielax.poochiereds.net> <20141204064711.72d48317@tlielax.poochiereds.net> In-Reply-To: <20141204064711.72d48317@tlielax.poochiereds.net> Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-nfs-owner@vger.kernel.org List-ID: I am looking at how to reduce total RPC execution time in NFS/RDMA. mountstats output shows that RPC backlog wait is too long, but increasing the credit limit doesn't seem help. Would this patchset help reducing total RPC execution time? Shirley On 12/04/2014 03:47 AM, Jeff Layton wrote: > I was using ftrace with the sunrpc:* and workqueue:* tracepoints, and > had a simple perl script to postprocess the trace info to figure out > average/min/max latency.