getting slow

Discussion in 'General' started by m-mehdipoor, Feb 14, 2013.

  1. m-mehdipoor

    m-mehdipoor New Member

    Hi,
    I have a new problem.
    I have a server with these HDD combination .
    3 X 300 GIG sas 15 RPM
    1 X 2 TB sata 2 .
    when there is a huge process in my server and the server get slow ( for example copy a heavy file ) the webserver get slow after that , and when the process finishes the webserver is slow till we restart the webserver ...
    is there any solution to solve this issue?
    I use Litespeed Web Server Enterprise v4.2.1.
    2 X E5645 processor
    32 Gig of memory.
  2. webizen

    webizen New Member

    run 'top -c' to see which process consumes cpu cycles the most when it is slow.
  3. m-mehdipoor

    m-mehdipoor New Member

    here you are


    top - 23:35:54 up 14 days, 13:55, 2 users, load average: 4.14, 4.48, 5.49
    Tasks: 614 total, 4 running, 610 sleeping, 0 stopped, 0 zombie
    Cpu(s): 6.1%us, 2.2%sy, 0.0%ni, 84.9%id, 6.7%wa, 0.0%hi, 0.1%si, 0.0%st
    Mem: 32869940k total, 31205192k used, 1664748k free, 867556k buffers
    Swap: 4194296k total, 469832k used, 3724464k free, 25757684k cached

    PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
    31615 mysql 20 0 12.8g 1.0g 5188 S 55.2 3.2 2050:05 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mys
    30474 moviefa 20 0 232m 36m 7884 S 31.5 0.1 0:01.82 lsphp5
    30421 funmusi1 20 0 248m 53m 7816 R 28.9 0.2 0:03.55 lsphp5:/home1/funmusi1/public_html/index.php
    30418 ariapato 20 0 337m 47m 8100 S 23.7 0.1 0:01.12 lsphp5:/home1/ariapato/public_html/index.php
    30509 sohrabs 20 0 211m 14m 7392 S 15.8 0.0 0:00.06 lsphp5
    30506 vatanpho 20 0 236m 41m 7716 S 13.1 0.1 0:00.40 lsphp5
    30464 hollywoo 20 0 307m 16m 7612 S 7.9 0.1 0:00.21 lsphp5
    25216 nobody 1 -19 234m 107m 31m D 5.3 0.3 2:12.43 litespeed (lshttpd)
    30493 root 20 0 15428 1672 940 R 5.3 0.0 0:00.08 top -c
    1391 root 20 0 0 0 0 S 2.6 0.0 19:25.57 [flush-8:0]
    1972 root 20 0 0 0 0 S 2.6 0.0 19:29.27 [kondemand/0]
    1984 root 20 0 0 0 0 S 2.6 0.0 13:29.92 [kondemand/12]
    30323 celebba1 20 0 237m 42m 7784 S 2.6 0.1 0:03.89 lsphp5
    30472 jazireh0 20 0 242m 44m 7784 S 2.6 0.1 0:00.30 lsphp5:/home1/jazireh0/public_html/index.php
    30503 dlandsh 20 0 211m 14m 7332 S 2.6 0.0 0:00.05 lsphp5
    1 root 20 0 19356 948 724 S 0.0 0.0 1:37.13 /sbin/init
    2 root 20 0 0 0 0 S 0.0 0.0 0:00.01 [kthreadd]
    3 root RT 0 0 0 0 S 0.0 0.0 1:33.17 [migration/0]
    4 root 20 0 0 0 0 S 0.0 0.0 6:05.35 [ksoftirqd/0]
    5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 [migration/0]
    6 root RT 0 0 0 0 S 0.0 0.0 0:01.53 [watchdog/0]
    7 root RT 0 0 0 0 S 0.0 0.0 1:15.90 [migration/1]
    8 root RT 0 0 0 0 S 0.0 0.0 0:00.00 [migration/1]
    9 root 20 0 0 0 0 S 0.0 0.0 5:40.84 [ksoftirqd/1]
    10 root RT 0 0 0 0 S 0.0 0.0 0:00.86 [watchdog/1]
    11 root RT 0 0 0 0 S 0.0 0.0 1:01.63 [migration/2]
    12 root RT 0 0 0 0 S 0.0 0.0 0:00.00 [migration/2]
    13 root 20 0 0 0 0 S 0.0 0.0 5:51.90 [ksoftirqd/2]
    14 root RT 0 0 0 0 S 0.0 0.0 0:00.98 [watchdog/2]
    15 root RT 0 0 0 0 S 0.0 0.0 0:51.85 [migration/3]
    16 root RT 0 0 0 0 S 0.0 0.0 0:00.00 [migration/3]
    17 root 20 0 0 0 0 S 0.0 0.0 5:51.91 [ksoftirqd/3]
    18 root RT 0 0 0 0 S 0.0 0.0 0:00.96 [watchdog/3]
    19 root RT 0 0 0 0 S 0.0 0.0 0:45.83 [migration/4]
    20 root RT 0 0 0 0 S 0.0 0.0 0:00.00 [migration/4]
    21 root 20 0 0 0 0 S 0.0 0.0 5:33.91 [ksoftirqd/4]
    22 root RT 0 0 0 0 S 0.0 0.0 0:00.91 [watchdog/4]
  4. webizen

    webizen New Member

    mysql database consumes the most resources. likely it is overloaded. hence the slow. better run db on its own disk or move db to its own server.
  5. m-mehdipoor

    m-mehdipoor New Member

    I seprated if before on another disk sir...
  6. webizen

    webizen New Member

    what about static file download? are those files are separate drives from db? are they slow as well?
  7. m-mehdipoor

    m-mehdipoor New Member

    they had problem as well
    I found the problem in IO wait time .
    it seems there are a lot of process on that sata HDD..
    but I don't know why I restart the webserver the speed will be well for some minutes...
    is it possible to do such a thing like this automaticaly ?
    I means the server do that it self and I wont have to do it manually ..
  8. webizen

    webizen New Member

  9. m-mehdipoor

    m-mehdipoor New Member

    how should I enable it ?
  10. webizen

    webizen New Member

    As the URL path indicates: LSWS Web Admin Console => Configuation => Server => Tuning
  11. m-mehdipoor

    m-mehdipoor New Member

    it is enable > Use Asynchronized disk I/O (AIO)
    Yes

    --
    should I increase AIO Block Size?
    it is on 1M now

Share This Page