Re: performance due to network?

Santosh Pradhan <spradhan@xxxxxxxxxx> · Fri, 13 Jun 2014 18:52:24 +0530



    Hi Erik,

    Could you just turn the DRC off and retry your test case?

    
    1. Turn the DRC off:

    gluster volume set <volume name> nfs.drc off

    
    2. Restart all the gluster processes

    a. killall glusterd glusterfs glusterfsd

    b. glusterd

    
    2.b should bring back all the gluster proc's.

    
    3. Retry your large copy test.

    
    Thanks,

    Santosh

    
    On 06/13/2014 05:16 PM, Aronesty, Erik
      wrote:

    
        glusterfs 3.5.0
            built on Apr 24 2014 01:38:34
         
        
            From:
                Pranith Kumar Karampuri [mailto:pkarampu@xxxxxxxxxx]
                

                Sent: Friday, June 13, 2014 1:21 AM

                To: Aronesty, Erik; gluster-users@xxxxxxxxxxx

                Subject: Re:  performance due to
                network?
          
        
        Erik,

          What version of glusterfs are you using?

          
          Pranith
        
          On 06/13/2014 02:09 AM, Aronesty, Erik
            wrote:
        
        
          I suspect I'm having performance issues
            because of network speeds.
           
          Supposedly I have 10gbit
            connections on all my NAS devices, however, it seems to me
            that the fastest I can write is 1Gbit.   When I'm copying
            very large files, etc, I see 'D' as the cp waits to I/O, but
            when I go the gluster servers, I don't see glusterfsd
            waiting (D) to write to the bricks themselves.  I have 4
            nodes, each with  10Gbit connection, each has 2 Areca RAID
            controllers with 12 disk raid5, and the 2 controllers
            stripped into 1 large volume.   Pretty sure there's plenty
            of i/o left on the bricks themselves.
           
          Is it possible that "one big file" isn't
            the right test… should I try 20 big files, and see how
            saturated my network can get?
           
          Erik
              Aronesty
              

              Senior Bioinformatics Architect
          EA
                | Quintiles

              Genomic
                  Services
          4820
              Emperor Boulevard
          Durham,
              NC 27703 USA
          

            Office:
              + 919.287.4011

            erik.aronesty@xxxxxxxxxxxxx

            
            www.quintiles.com
               

            www.expressionanalysis.com

              
          _______________________________________________
          Gluster-users mailing list
          Gluster-users@xxxxxxxxxxx
          http://supercolony.gluster.org/mailman/listinfo/gluster-users
        
         
      _______________________________________________
Gluster-users mailing list
Gluster-users@xxxxxxxxxxx
http://supercolony.gluster.org/mailman/listinfo/gluster-users
    
    
_______________________________________________
Gluster-users mailing list
Gluster-users@xxxxxxxxxxx
http://supercolony.gluster.org/mailman/listinfo/gluster-users