[Gluster-users] [Gluster-devel] 3.7.8 client is slow

[David Robinson]

done

------ Original Message ------
From: "Oleksandr Natalenko" <oleksandr at natalenko.name>
To: gluster-users at gluster.org; "David Robinson" 
<drobinson at corvidtec.com>
Cc: "Gluster Devel" <gluster-devel at gluster.org>
Sent: 2/22/2016 1:12:01 PM
Subject: Re: [Gluster-devel] 3.7.8 client is slow

>David,
>
>could you please cross-post your observations to the following 
>bugreport:
>
>https://bugzilla.redhat.com/show_bug.cgi?id=1309462
>
>?
>
>It seems you have faced similar issue.
>
>On понеділок, 22 лютого 2016 р. 16:46:01 EET David Robinson wrote:
>>  The 3.7.8 FUSE client is significantly slower than 3.7.6.  Is this
>>  related to some of the fixes that were done to correct memory leaks?  
>>Is
>>  there anything that I can do to recover the performance of 3.7.6?
>>
>>  My testing involved creating a "bigfile" that is 20GB.  I then 
>>installed
>>  the 3.6.6 FUSE client and tested the copy of the bigfile from one
>>  gluster machine to another.  The test was repeated 2x to make sure 
>>cache
>>  wasn't affect performance.
>>
>>  Using Centos7.1
>>  FUSE 3.6.6 took 47-seconds and 38-seconds.
>>  FUSE 3.7.6 took 43-seconds and 34-seconds.
>>  FUSE 3.7.8 took 205-seconds and 224-seconds
>>
>>  I repeated the test on another machine that is running centos 6.7 and
>>  the results were even worse.  98-seconds for FUSE 3.6.6 versus
>>  575-seconds for FUSE 3.7.8.
>>
>>  My server setup is:
>>
>>  Volume Name: gfsbackup
>>  Type: Distribute
>>  Volume ID: 29b8fae9-dfbf-4fa4-9837-8059a310669a
>>  Status: Started
>>  Number of Bricks: 2
>>  Transport-type: tcp
>>  Bricks:
>>  Brick1: ffib01bkp:/data/brick01/gfsbackup
>>  Brick2: ffib01bkp:/data/brick02/gfsbackup
>>  Options Reconfigured:
>>  performance.readdir-ahead: on
>>  cluster.rebal-throttle: aggressive
>>  diagnostics.client-log-level: WARNING
>>  diagnostics.brick-log-level: WARNING
>>  changelog.changelog: off
>>  client.event-threads: 8
>>  server.event-threads: 8
>>
>>  David
>>
>>
>>
>>  ========================
>>
>>
>>
>>  David F. Robinson, Ph.D.
>>
>>  President - Corvid Technologies
>>
>>  145 Overhill Drive
>>
>>  Mooresville, NC 28117
>>
>>  704.799.6944 x101   [Office]
>>
>>  704.252.1310           [Cell]
>>
>>  704.799.7974           [Fax]
>>
>>  david.robinson at corvidtec.com
>>
>>  http://www.corvidtec.com
>
>