Topic
3 replies Latest Post - ‏2013-08-30T17:36:02Z by sabujp
grandemahatma
grandemahatma
1 Post
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Pinned topic who's generating traffic

‏2013-07-29T12:23:39Z |

Hi,

Some colleague(s) of mine is creating a lot of traffic, possibly by either accessing many files, or copying them around, or browsing recursively through folders, or whatever... the symptoms are a deadly slow system, so slow that even editing a remote file with "vi" becomes cumbersome.

I'm looking for a method, or a tool, to detect which of my colleagues is generating so much traffic to put the whole fs to its knees. Is this possible?

If finding THE guy is not possible, can I create a list of the guys that are generating most of the traffic?

Or any hint in detecting the culprit?

Thanks

 

 

Updated on 2013-07-29T15:35:57Z at 2013-07-29T15:35:57Z by grandemahatma
  • ScaleoutSean
    ScaleoutSean
    4 Posts
    ACCEPTED ANSWER

    Re: who's generating traffic

    ‏2013-08-02T13:11:07Z  in response to grandemahatma

    You need to find out what (high IOPS or throughput or both, which filesystems, which servers, etc.) is actually slow, and then based on that proceed further. 

    It should be easy to find the culprit based on the client's network port utilization or total client traffic to some or all of GPFS servers. If it's about high IOPS, then that could be more difficult.

     

  • Ponch
    Ponch
    3 Posts
    ACCEPTED ANSWER

    Re: who's generating traffic

    ‏2013-08-29T22:52:39Z  in response to grandemahatma

    New to forum, but what about mmpmon?  That will at least get you which client is creating the traffic and reduce the investigation to a few or single clients.

     

    Ponch

    • sabujp
      sabujp
      12 Posts
      ACCEPTED ANSWER

      Re: who's generating traffic

      ‏2013-08-30T17:36:02Z  in response to Ponch

      or iftop to determine which client is generating traffic (assuming linux on x86 hardware), would be nice to have a way to tell which files are getting the most IOPs sent to them.

      Updated on 2013-08-30T17:46:03Z at 2013-08-30T17:46:03Z by sabujp