Return-Path: X-Original-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 561EC10FBD for ; Tue, 11 Mar 2014 23:25:56 +0000 (UTC) Received: (qmail 14603 invoked by uid 500); 11 Mar 2014 23:25:49 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 14427 invoked by uid 500); 11 Mar 2014 23:25:44 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hdfs-issues@hadoop.apache.org Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 14410 invoked by uid 99); 11 Mar 2014 23:25:43 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 11 Mar 2014 23:25:43 +0000 Date: Tue, 11 Mar 2014 23:25:43 +0000 (UTC) From: "Brandon Li (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-6080) Improve NFS gateway performance by making rtmax and wtmax configurable MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/HDFS-6080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13931141#comment-13931141 ] Brandon Li commented on HDFS-6080: ---------------------------------- Yes. Let's update the doc too. If the user doesn't change the mount option and the nfs client uses 32kb or 64kb instead, the 1MB setting will not take effect so it hurts nothing. > Improve NFS gateway performance by making rtmax and wtmax configurable > ---------------------------------------------------------------------- > > Key: HDFS-6080 > URL: https://issues.apache.org/jira/browse/HDFS-6080 > Project: Hadoop HDFS > Issue Type: Improvement > Components: nfs, performance > Reporter: Abin Shahab > Assignee: Abin Shahab > Attachments: HDFS-6080.patch, HDFS-6080.patch > > > Right now rtmax and wtmax are hardcoded in RpcProgramNFS3. These dictate the maximum read and write capacity of the server. Therefore, these affect the read and write performance. > We ran performance tests with 1mb, 100mb, and 1GB files. We noticed significant performance decline with the size increase when compared to fuse. We realized that the issue was with the hardcoded rtmax size(64k). > When we increased the rtmax to 1MB, we got a 10x improvement in performance. > NFS reads: > +---------------+------------+---------------+---------------+---------------+--------------------+----------------------+ > | File | Size | Run 1 | Run 2 | Run 3 | Average | Std. Dev. | > | testFile100Mb | 104857600 | 23.131158137 | 19.24552955 | 19.793332866 | 20.723340184333335 | 1.7172094782219731 | > | testFile1Gb | 1073741824 | 219.108776636 | 201.064032255 | 217.433909843 | 212.53557291133333 | 8.14037175506561 | > | testFile1Mb | 1048576 | 0.330546906 | 0.256391808 | 0.28730168 | 0.2914134646666667 | 0.030412987573361663 | > +---------------+------------+---------------+---------------+---------------+--------------------+----------------------+ > Fuse reads: > +---------------+------------+-------------+--------------+--------------+--------------------+-----------------------+ > | File | Size | Run 1 | Run 2 | Run 3 | Average | Std. Dev. | > | testFile100Mb | 104857600 | 2.394459443 | 2.695265191 | 2.50046517 | 2.5300632679999997 | 0.12457410127142007 | > | testFile1Gb | 1073741824 | 25.03324924 | 24.155102554 | 24.901525525 | 24.696625772999997 | 0.386672412437576 | > | testFile1Mb | 1048576 | 0.271615094 | 0.270835986 | 0.271796438 | 0.2714158393333333 | 0.0004166483951065848 | > +---------------+------------+-------------+--------------+--------------+--------------------+-----------------------+ > (NFS read after rtmax = 1MB) > +---------------+------------+--------------+-------------+--------------+---------------------+-----------------+ > | File | Size | Run 1 | Run 2 | Run 3 | Average | Std. Dev. | > | testFile100Mb | 104857600 | 3.655261869 | 3.438676067 | 3.557464787 | 3.5504675743333336 | 0.0885591069882058 | > | testFile1Gb | 1073741824 | 34.663612417 | 37.32089122 | 37.997718857 | 36.660740831333335 | 1.4389615098060426 | > | testFile1Mb | 1048576 | 0.115602858 | 0.106826253 | 0.125229976 | 0.11588636233333334 | 0.007515962395481867 | > +---------------+------------+--------------+-------------+--------------+---------------------+-----------------+ -- This message was sent by Atlassian JIRA (v6.2#6252)