The Community Forums

Interact with an entire community of cPanel & WHM users!
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

lfd on server.hostname: Email queue size alert

Discussion in 'E-mail Discussions' started by Kurieuo, Apr 22, 2013.

  1. Kurieuo

    Kurieuo Well-Known Member

    Joined:
    Dec 13, 2002
    Messages:
    98
    Likes Received:
    0
    Trophy Points:
    6
    Location:
    Australia
    About the same time I upgraded to cPanel 11.36 I've been receiving the following email notifications from LFD:

    Time: Tue Apr 23 01:26:05 2013 +1000
    Unable to obtain exim queue length within 30 seconds - Timed out

    However, the email queues are pretty much empty at this time -- as Relayers don't show any abnormality.

    There is a correlation between when cpup and cpbackup runs, which can be resource intensive. But the server otherwise runs a consistently below 0.5 and less.

    Running sar shows some high %iowait times near the times.

    I'm running CloudLinux and have a RAID1 setup. This server is getting on, but it otherwise performs very smoothly and runs like a dream. So this is bugging me.

    Now I've started monitoring the server load more closely to see what is happening and how high it peaks at the said times.

    Is anyone else experiencing this? Or, does anyone have any ideas why this has started happening now?

    Thanks!
     
  2. arunsv84

    arunsv84 Well-Known Member

    Joined:
    Oct 20, 2008
    Messages:
    373
    Likes Received:
    1
    Trophy Points:
    18
    Location:
    127.0.0.1
    cPanel Access Level:
    Root Administrator
    Have you tried checking the exim queue manually from shell? is it taking so much time? Also restart exim server and see the results.

    Thanks!
     
  3. Kurieuo

    Kurieuo Well-Known Member

    Joined:
    Dec 13, 2002
    Messages:
    98
    Likes Received:
    0
    Trophy Points:
    6
    Location:
    Australia
    Thanks Arunsv, but that's not it.

    After submittinga cPanel ticket, it was pointed out the IO% wait was high at certain intervals (via "sar" at shell). The server CPU speed definitely isn't being overloaded during the periods the LFD alerts are received.

    This kind of correlated with the times I received the messages, but not always. And often it would be when cpup and cpbackup were scheduled to run, but again randomly outside this interval.

    However, the issue actually started happening Sept last year -- I found a message going all the way back then. So I'll need to do a bit more investigation as to what changed then.

    Otherwise, the issue doesn't really seem to be causing any problems beyond an I/O bottleneck generally during certain cronned events.
     
    #3 Kurieuo, Apr 23, 2013
    Last edited: Apr 23, 2013
Loading...

Share This Page