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https://issues.apache.org/jira/browse/HDFS-6080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13931122#comment-13931122
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Hadoop QA commented on HDFS-6080:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12633847/HDFS-6080.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:red}-1 tests included{color}. The patch doesn't appear to include
any new or modified tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javadoc{color}. There were no new javadoc warning messages.
{color:green}+1 eclipse:eclipse{color}. The patch built with
eclipse:eclipse.
{color:red}-1 findbugs{color}. The patch appears to introduce 1 new
Findbugs (version 1.3.9) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:red}-1 core tests{color}. The patch failed these unit tests in
hadoop-common-project/hadoop-nfs hadoop-hdfs-project/hadoop-hdfs
hadoop-hdfs-project/hadoop-hdfs-nfs:
org.apache.hadoop.fs.TestHdfsNativeCodeLoader
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/6374//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HDFS-Build/6374//artifact/trunk/patchprocess/newPatchFindbugsWarningshadoop-hdfs-nfs.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/6374//console
This message is automatically generated.
> 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 |
> +---------------+------------+--------------+-------------+--------------+---------------------+-----------------+
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