SSD High Load

Discussion in 'Linux VPS/Dedicated - General' started by turbo2ltr, May 8, 2014.

  1. turbo2ltr

    turbo2ltr Member

    Just move to an SSD server and it's significantly faster.

    I monitor load on my severs and all of a sudden load went through the roof. Page response was very slow. But nothing is going on! Whats up with that!

    Code:
    top - 13:46:58 up 5 days, 18:02,  1 user,  load average: 5.38, 3.79, 1.94
    Tasks:  44 total,   1 running,  43 sleeping,   0 stopped,   0 zombie
    Cpu(s):  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
    Mem:   5242880k total,  4562012k used,   680868k free,        0k buffers
    Swap:        0k total,        0k used,        0k free,  4019812k cached
    
      PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
      962 mysql     20   0  497m 302m 4456 S  0.3  5.9  27:12.32 mysqld
        1 root      20   0  2900  932  752 S  0.0  0.0   0:00.49 init
        2 root      20   0     0    0    0 S  0.0  0.0   0:00.00 kthreadd/12258
        3 root      20   0     0    0    0 S  0.0  0.0   0:00.00 khelper/12258
      134 root      16  -4  2464  504  260 S  0.0  0.0   0:00.00 udevd
      570 root      20   0 37000 1656  744 S  0.0  0.0   0:02.49 rsyslogd
      583 named     20   0  331m  41m 1776 S  0.0  0.8   1:01.44 named
      680 root      20   0  8940  904  400 S  0.0  0.0   0:00.07 sshd
      687 root      20   0  3264  696  508 S  0.0  0.0   0:00.00 xinetd
      697 root      20   0  6268 1232 1024 S  0.0  0.0   0:00.02 mysqld_safe
    1025 root      20   0 69076  18m 6504 S  0.0  0.4   0:54.77 httpd
    1031 root      20   0  9024 1452  996 S  0.0  0.0   0:00.63 pure-ftpd
    1033 root      20   0  9856 1100  772 S  0.0  0.0   0:00.54 pure-authd
    1040 root      20   0  7184 1176  568 S  0.0  0.0   0:05.65 crond
    1050 root      20   0  2988  504  360 S  0.0  0.0   0:00.00 atd
    1175 root      20   0 18384 9792 1788 S  0.0  0.2   0:13.10 cpsrvd-ssl
    6693 root      20   0 13768 7676 1080 S  0.0  0.1   0:11.05 lfd - sleeping
    11105 root      20   0 11856 3228 2512 S  0.0  0.1   0:00.01 sshd
    11119 cffdev    20   0 11992 1572  836 S  0.0  0.0   0:00.02 sshd
    11133 cffdev    20   0  6404 1688 1408 S  0.0  0.0   0:00.01 bash
    11175 cffdev    20   0  2568 1088  880 R  0.0  0.0   0:00.20 top
    11325 root      20   0 12624 6912 2548 S  0.0  0.1   0:00.14 leechprotect
    11328 nobody    20   0 75612  24m 5632 S  0.0  0.5   0:00.27 httpd
    11331 nobody    20   0 69476  17m 4468 S  0.0  0.3   0:00.04 httpd
    11346 nobody    20   0 69476  17m 4476 S  0.0  0.3   0:00.10 httpd
    11347 nobody    20   0 80160  34m  11m S  0.0  0.7   0:02.14 httpd
    11349 nobody    20   0 80228  38m  15m S  0.0  0.8   0:02.36 httpd
    11351 nobody    20   0 77872  26m 6028 S  0.0  0.5   0:00.21 httpd
    11354 nobody    20   0 77080  32m  12m S  0.0  0.6   0:01.71 httpd
    11355 nobody    20   0 69476  17m 4480 D  0.0  0.3   0:00.08 httpd
    11389 nobody    20   0 69476  16m 4280 S  0.0  0.3   0:00.03 httpd
    11390 nobody    20   0 69476  16m 4280 D  0.0  0.3   0:00.02 httpd
    22531 root      20   0  3096  948  712 S  0.0  0.0   0:00.59 dovecot
    22533 dovenull  20   0  7220 2200 1584 S  0.0  0.0   0:00.04 pop3-login
    22534 dovenull  20   0  7364 2452 1768 S  0.0  0.0   0:00.41 imap-login
    22535 dovecot   20   0  2952  852  708 S  0.0  0.0   0:00.23 anvil
    22536 root      20   0  3080  996  724 S  0.0  0.0   0:00.24 log
    22538 dovenull  20   0  7228 2188 1584 S  0.0  0.0   0:00.03 pop3-login
    22539 root      20   0  3760 1608  848 S  0.0  0.0   0:00.53 config
    22540 dovenull  20   0  7224 2408 1768 S  0.0  0.0   0:00.24 imap-login
    22568 mailnull  20   0 11668 1152  584 S  0.0  0.0   0:00.86 exim
    25122 root      20   0  6980 3980  956 S  0.0  0.1   0:06.70 queueprocd - wa
    25191 root      20   0 14500 7464 1108 S  0.0  0.1   0:40.97 tailwatchd
    25201 root      38  18  5196 2080  696 S  0.0  0.0   0:00.36 cpanellogd - sl
    
    
    As I write this, load is coming down. I wish VPSs were more sandboxed as far as hardware resources go. Load on other VPSs should not affect my VPS that is sitting idle. But I guess there's only so much you can sandbox on common hardware. Maybe I see a dedicated server in my future..
     
  2. KH-Jonathan

    KH-Jonathan Director of Managed Services Staff Member

    This definitely sounds odd and the output you posted confirms your VPS is pretty much idle. Do you have a ticket number I can reference?
     
  3. turbo2ltr

    turbo2ltr Member

    No, it's back down to it's normal < 0.2. I'll watch it and start a ticket if it happens again. I'm on SSD14 if you want to keep an eye on it.

    Thanks!
     
  4. KH-Jonathan

    KH-Jonathan Director of Managed Services Staff Member

    We'll certainly keep an eye on it.
     

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