Re: [Gluster-devel] Disperse volume performance improvement using clients-io-theads

[Atin Mukherjee <amukherj@xxxxxxxxxx>]

On Mon, Aug 22, 2016 at 10:09 AM, jayakrishnan mm <jayakrishnan.mm@xxxxxxxxx> wrote:

Hi,

Glusterfs Ver: 3.7.6

1) Currently I am using disperse  volume  and its performance is not satisfactory.

 So I tried  "sudo gluster v set ec-vol performance.client-io-threads on"

(as per https://bugzilla.redhat.com/show_bug.cgi?id=1349953)

on the volume . But  I am getting

Connection failed. Please check if gluster daemon is operational.  error.

Ideally, this indicates that CLI is not able to talk to GlusterD as it the latter could be down. Are you sure GlusterD was up by the time you executed this command? If yes, please attach the cmd_history and cli log.
 

volume info

Volume Name: ec-vol
Type: Disperse
Volume ID: 66d9f9e9-8bbd-46d8-b491-5b3e48219ee1
Status: Started
Number of Bricks: 1 x (4 + 2) = 6
Transport-type: tcp
Bricks:
Brick1: jk:/home/jk/gluster/brick1
Brick2: jk:/home/jk/gluster/brick2
Brick3: jk:/home/jk/gluster/brick3
Brick4: jk:/home/jk/gluster/brick4
Brick5: jk:/home/jk/gluster/brick5
Brick6: jk:/home/jk/gluster/brick6
Options Reconfigured:
performance.readdir-ahead: on

Attached  the  log.

How  to resolve this error ?

2) If I replace  the Erasure code algorithm  in the EC  with a simpler one , will  it  give a better performance ?  What is  the real bottleneck ?

Best Regards

JK

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--

--Atin

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