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High Server Load after upgrading from 3.5.4 to 3.6.4

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  • High Server Load after upgrading from 3.5.4 to 3.6.4

    Around two weeks ago I upgraded my board from 3.5.4 to 3.6.4. The server load went high all the time. I am talking about 8 to 10 most of the day. Before upgrading the load was between 0.3 to 3 max. This is the top stat:

    Code:
    top - 15:48:44 up 2 days, 10:25,  1 user,  load average: 9.96, 7.47, 7.96
    Tasks: 373 total,   2 running, 370 sleeping,   1 stopped,   0 zombie
    Cpu(s): 35.9% us,  4.6% sy,  0.0% ni, 53.2% id,  6.3% wa,  0.1% hi,  0.0% si
    Mem:   2074744k total,  2043156k used,    31588k free,     8432k buffers
    Swap:  2040244k total,  1040248k used,   999996k free,    58220k cached
      PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
    20609 nobody    16   0 56648  11m 2628 S   12  0.6   8:41.94 httpd
    17286 nobody    16   0 56868  10m 2632 S   11  0.5   3:26.80 httpd
    24053 nobody    16   0 57976  12m 2664 S   10  0.6   7:25.35 httpd
    29215 nobody    15   0 56664  11m 2636 S   10  0.6   4:39.92 httpd
     1472 nobody    16   0 56812  11m 2628 R    9  0.6   2:25.10 httpd
    31863 nobody    15   0 56840  11m 2660 S    8  0.6   4:52.72 httpd
       62 root      16   0     0    0    0 S    7  0.0 320:10.88 kswapd0
    23415 nobody    16   0 56676  11m 2628 S    7  0.6   3:12.49 httpd
    15841 nobody    15   0 53732 9312 2628 S    7  0.4   0:37.74 httpd
    21813 nobody    15   0 56564  10m 2644 S    6  0.5   7:46.04 httpd
     7587 nobody    15   0 56748  11m 2628 S    6  0.5   3:55.54 httpd
     5277 nobody    15   0 56632  11m 2660 S    5  0.6   6:51.01 httpd
    20328 nobody    15   0 54172 9740 2628 S    5  0.5   0:36.10 httpd
    11552 nobody    15   0 56632  11m 2636 S    5  0.6   3:59.94 httpd
      932 nobody    15   0 59428  11m 2736 S    5  0.6   4:34.79 httpd
     1918 nobody    15   0 57152  12m 2632 S    4  0.6   2:00.64 httpd
    27951 nobody    15   0 56912  11m 2628 S    4  0.5   5:26.45 httpd
    I have a larg forum with ~ 4GB database and more than 200,000 members.

    Is there anything in vb 3.6.4 that might helped to increase the load of the server. I even turned the search engin off in the VB and no imporvments at all.

    Can someone help?
    Last edited by khalid; Thu 1 Feb '07, 1:03pm.

  • #2
    I upgraded to 3.6.4 from 3.5.4 last Saturday. I noticed my load was high. I also noticed that the datastore cache file has almost zero lenth. Turns out that the upgrade had reset the permissions wrong for datastore.

    I reset the permissions for the datastore cache file to allow it to be written to and waited about an hour and rechecked the file. It had then grown to 145,000 bytes and my load was down.

    Maybe the same thing happened to you.

    Comment


    • #3
      treasureman Do you mean changing the permisions (chmod) of includes/datastore/datastore_cach.php to 666 of what?

      Thanks.

      Comment


      • #4
        First look at your datastore cache file. It it doesn't have a current date and no more than a couple hours old then it may not be working. Also look at the size. It it is 467 bytes or some other small size then it is not working.

        If it has a large size (over 50,000 bytes) and has a current date, then it is working.

        If not working CMOD that file to 666 or 777 or something where it can be written to.

        Comment


        • #5
          The datastore cache was not activated. I activated it from config.php and the cache file is working now. However, this didn't reduce the load on my forums. The load is always between 3.0 to 30 and more. Using VB 3.5.4 without cache was working fine. This happened after I upgraded the VB to 3.6.4.

          Any Idea where to look for?

          There are other threads with similar problem where high loads came after the latest update, example:
          http://www.vbulletin.com/forum/showt...+after+upgrade
          http://www.vbulletin.com/forum/showt...+after+upgrade
          http://www.vbulletin.com/forum/showt...+after+upgrade
          Last edited by khalid; Mon 5 Feb '07, 6:49am. Reason: add more info

          Comment


          • #6
            khalid did you ever find a solution to this problem ?

            im in the same boat, and the fixes from eva in another thread posed no benefit to my setup at all, i deeply regret upgrading from my 3.5 version of vbulletin go to the newer 3.6 due to this result.

            and im still trying to find out if this will be resolved in newer versions etc, otherwise i might even considering moving to another forum platform

            Comment


            • #7
              Although I'm unable to get a solid answer from the vbulletin guys, I was able to massively reduce the number load spikes by making the attachment scheduled task run every 5-6 hours instead of every 1 hour. it seems to be very intensive.

              Comment


              • #8
                No I didn't find a solution for this problem. Server loads are still high between 10 and 50. Currently I am trying to move to a more powerfull servers.

                Comment


                • #9
                  I have same problem, load is huge, CPU usage is 195% during daytime. Seems somethings very changed from 3.5 to 3.6 . I run 3.6.6 right now

                  Comment


                  • #10
                    Have a look at this thread and follow the instructions within it

                    How To Reduce Server Load

                    If you have a dedicated server then you also may wish to consider requesting a server optimization.

                    Read this thread...

                    [Server Optimisation]: Required info for optimisation requests [January 15, 2007]

                    .... then start a new thread here with all the required information

                    http://www.vbulletin.com/forum/forumdisplay.php?f=14
                    Kerry-Anne :)

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