[solve] cpu usage high

Discussion in 'General' started by jaequery, Oct 9, 2012.

  1. jaequery

    jaequery New Member

    hi guys

    i'm hosting a site that gets 1M+ visits a day in litespeed right now.
    the site is a combination of php and cgi and i noticed that my cpu's hover around 20-30 percent w/ load avg around 8-15. server has 32 cpu cores of intel romley btw. litespeed is configured with lsphp + suexec.

    the server has a ton of ram (64gb), but it is only utilizing 2-3 percent of it and i was wondering if i haven't configured litespeed correctly for this. disk is SSD w/ disk i/o less than 2 percent;. mysql is hosted on separate server.

    is there some setting that i'm not aware of?

    i've upped all the sysctl settings, like this:

    net.ipv4.netfilter.ip_conntrack_max=524288
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.ip_local_port_range = 1024 65023
    net.ipv4.tcp_max_syn_backlog = 10240
    net.ipv4.tcp_max_tw_buckets = 400000
    net.ipv4.tcp_max_orphans = 60000
    net.ipv4.tcp_synack_retries = 3
    net.core.somaxconn = 10000

    not sure if it's too low or too high.

    can i please get some assistance in optimizing our current situation?
    Last edited by a moderator: Oct 25, 2012
  2. jaequery

    jaequery New Member

    here is a snapshot of the top:

    top - 13:55:25 up 41 days, 1:55, 2 users, load average: 11.67, 11.76, 11.85
    Tasks: 469 total, 12 running, 457 sleeping, 0 stopped, 0 zombie
    Cpu0 : 46.7%us, 3.3%sy, 0.0%ni, 0.0%id, 0.0%wa, 16.7%hi, 33.3%si, 0.0%st
    Cpu1 : 50.0%us, 15.6%sy, 0.0%ni, 31.2%id, 0.0%wa, 0.0%hi, 3.1%si, 0.0%st
    Cpu2 : 63.6%us, 12.1%sy, 0.0%ni, 21.2%id, 0.0%wa, 0.0%hi, 3.0%si, 0.0%st
    Cpu3 : 68.8%us, 12.5%sy, 0.0%ni, 18.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu4 : 70.0%us, 13.3%sy, 0.0%ni, 16.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu5 : 78.1%us, 12.5%sy, 0.0%ni, 9.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu6 : 74.2%us, 12.9%sy, 0.0%ni, 12.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu7 : 75.0%us, 12.5%sy, 0.0%ni, 9.4%id, 0.0%wa, 0.0%hi, 3.1%si, 0.0%st
    Cpu8 : 62.5%us, 12.5%sy, 0.0%ni, 25.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu9 : 67.7%us, 9.7%sy, 0.0%ni, 22.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu10 : 61.3%us, 12.9%sy, 0.0%ni, 25.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu11 : 40.6%us, 6.2%sy, 0.0%ni, 53.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu12 : 35.5%us, 3.2%sy, 0.0%ni, 61.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu13 : 12.9%us, 3.2%sy, 0.0%ni, 83.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu14 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu15 : 15.6%us, 3.1%sy, 0.0%ni, 81.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu16 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu17 : 16.7%us, 3.3%sy, 0.0%ni, 80.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu18 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu19 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu20 : 9.7%us, 0.0%sy, 0.0%ni, 90.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu21 : 6.7%us, 0.0%sy, 0.0%ni, 93.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu22 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu23 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu24 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu25 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu26 : 12.5%us, 9.4%sy, 0.0%ni, 78.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu27 : 75.0%us, 15.6%sy, 0.0%ni, 9.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Mem: 51532768k total, 35681456k used, 15851312k free, 554420k buffers
    Swap: 7124816k total, 0k used, 7124816k free, 32931908k cached

    PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
    4852 someuser 25 0 73480 11m 2328 R 28.8 0.0 0:00.09 index_dl.cgi
    4861 someuser 25 0 73472 11m 2328 R 22.4 0.0 0:00.07 index_dl.cgi
    5736 nobody 0 -19 124m 21m 6872 S 22.4 0.0 31:23.28 litespeed
    4863 someuser 25 0 73424 11m 2328 R 19.2 0.0 0:00.06 index_dl.cgi
    4864 someuser 25 0 73376 11m 2332 R 16.0 0.0 0:00.05 index_dl.cgi
    4866 someuser 25 0 42720 9816 1484 R 16.0 0.0 0:00.05 index_dl.cgi
    4865 someuser 25 0 69200 10m 2304 S 12.8 0.0 0:00.04 index_dl.cgi
    4870 someuser 24 0 38708 7568 1452 R 9.6 0.0 0:00.03 index_dl.cgi
    4869 someuser 25 0 27400 4548 1424 R 6.4 0.0 0:00.02 index_dl.cgi
    4874 someuser 24 0 27380 4528 1424 R 6.4 0.0 0:00.02 index_dl.cgi
    2417 someuser 15 0 138m 9868 6284 S 3.2 0.0 0:00.16 lsphp5
    2653 root 15 0 13020 1424 828 R 3.2 0.0 0:00.27 top
    4701 someuser 15 0 138m 9552 5900 S 3.2 0.0 0:00.04 lsphp5
    4791 someuser 18 0 69196 10m 2288 S 3.2 0.0 0:00.05 index_dl.cgi
    4875 someuser 24 0 21348 2748 1356 R 3.2 0.0 0:00.01 index_dl.cgi
    4878 someuser 24 0 21240 2636 1352 R 3.2 0.0 0:00.01 index_dl.cgi
    5718 root 4 -19 5892 440 352 S 3.2 0.0 1:16.52 httpd
    1 root 15 0 10364 692 580 S 0.0 0.0 0:06.43 init
    2 root RT -5 0 0 0 S 0.0 0.0 0:15.52 migration/0
    3 root 34 19 0 0 0 S 0.0 0.0 0:03.30 ksoftirqd/0
    4 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
    5 root RT -5 0 0 0 S 0.0 0.0 0:17.37 migration/1
    6 root 34 19 0 0 0 S 0.0 0.0 0:00.26 ksoftirqd/1
    7 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/1
    8 root RT -5 0 0 0 S 0.0 0.0 0:21.21 migration/2
    9 root 34 19 0 0 0 S 0.0 0.0 0:00.24 ksoftirqd/2
    10 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/2
    11 root RT -5 0 0 0 S 0.0 0.0 0:14.93 migration/3
    12 root 34 19 0 0 0 S 0.0 0.0 0:00.43 ksoftirqd/3
    13 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/3
    14 root RT -5 0 0 0 S 0.0 0.0 0:28.79 migration/4
    15 root 34 19 0 0 0 S 0.0 0.0 0:00.21 ksoftirqd/4
    16 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/4
    17 root RT -5 0 0 0 S 0.0 0.0 0:29.10 migration/5
    18 root 34 19 0 0 0 S 0.0 0.0 0:00.27 ksoftirqd/5
  3. NiteWave

    NiteWave Administrator

    you have 28 (32 ?) CPU and normal load is 28, now only 25% - 50% load, so not high, there is still room for higher traffic, for example, 2M visits.
  4. jaequery

    jaequery New Member

    yes but when load avg starts to reach 15+ (indicating more traffic), the site starts to slow down and response time of site starts to become greater than 4+ secs, when normally it's 1 second or so.
    could i be hitting some max connections settings (either litespeed and/or php, kernel, etc) and it is placed in queue?
  5. NiteWave

    NiteWave Administrator

    so when slow down, capture the screen shot of real-time stats and paste here. it provides many useful info there. most likely can identify where the bottle-neck is.
  6. jaequery

    jaequery New Member

    Hi Nitewave, site is taking a while to load now. here is a screen paste of w, top, and iostat:


    // w

    -bash-3.2# w
    14:30:52 up 6 days, 22:05, 2 users, load average: 20.58, 22.98, 24.17

    // top by cpus

    top - 14:31:41 up 6 days, 22:06, 2 users, load average: 21.18, 22.81, 24.05
    Tasks: 567 total, 17 running, 550 sleeping, 0 stopped, 0 zombie
    Cpu0 : 7.7%us, 7.7%sy, 0.0%ni, 0.0%id, 0.0%wa, 30.8%hi, 53.8%si, 0.0%st
    Cpu1 : 53.3%us, 6.7%sy, 0.0%ni, 33.3%id, 0.0%wa, 0.0%hi, 6.7%si, 0.0%st
    Cpu2 : 71.4%us, 14.3%sy, 0.0%ni, 14.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu3 : 50.0%us, 14.3%sy, 0.0%ni, 28.6%id, 0.0%wa, 0.0%hi, 7.1%si, 0.0%st
    Cpu4 : 71.4%us, 14.3%sy, 0.0%ni, 14.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu5 : 61.5%us, 7.7%sy, 0.0%ni, 30.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu6 : 61.5%us, 7.7%sy, 0.0%ni, 30.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu7 : 78.6%us, 14.3%sy, 0.0%ni, 7.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu8 : 50.0%us, 7.1%sy, 0.0%ni, 42.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu9 : 71.4%us, 14.3%sy, 0.0%ni, 14.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu10 : 66.7%us, 8.3%sy, 0.0%ni, 25.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu11 : 64.3%us, 14.3%sy, 0.0%ni, 21.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu12 : 78.6%us, 14.3%sy, 0.0%ni, 7.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu13 : 64.3%us, 7.1%sy, 0.0%ni, 28.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu14 : 28.6%us, 7.1%sy, 0.0%ni, 57.1%id, 0.0%wa, 0.0%hi, 7.1%si, 0.0%st
    Cpu15 : 64.3%us, 7.1%sy, 0.0%ni, 28.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu16 : 21.4%us, 7.1%sy, 0.0%ni, 64.3%id, 0.0%wa, 0.0%hi, 7.1%si, 0.0%st
    Cpu17 : 76.9%us, 15.4%sy, 0.0%ni, 7.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu18 : 21.4%us, 14.3%sy, 0.0%ni, 42.9%id, 0.0%wa, 0.0%hi, 21.4%si, 0.0%st
    Cpu19 : 50.0%us, 7.1%sy, 0.0%ni, 42.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu20 : 14.3%us, 14.3%sy, 0.0%ni, 71.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu21 : 61.5%us, 7.7%sy, 0.0%ni, 23.1%id, 0.0%wa, 0.0%hi, 7.7%si, 0.0%st
    Cpu22 : 46.2%us, 7.7%sy, 0.0%ni, 46.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu23 : 71.4%us, 7.1%sy, 0.0%ni, 14.3%id, 0.0%wa, 0.0%hi, 7.1%si, 0.0%st
    Cpu24 : 50.0%us, 7.1%sy, 0.0%ni, 42.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu25 : 46.2%us, 7.7%sy, 0.0%ni, 38.5%id, 0.0%wa, 0.0%hi, 7.7%si, 0.0%st
    Cpu26 : 76.9%us, 15.4%sy, 0.0%ni, 7.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu27 : 53.8%us, 7.7%sy, 0.0%ni, 38.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu28 : 46.2%us, 7.7%sy, 0.0%ni, 46.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
    Cpu29 : 64.3%us, 14.3%sy, 0.0%ni, 14.3%id, 0.0%wa, 0.0%hi, 7.1%si, 0.0%st
    Mem: 51532700k total, 48579012k used, 2953688k free, 550444k buffers
    Swap: 7124816k total, 0k used, 7124816k free, 44709260k cached



    // top

    top - 14:31:09 up 6 days, 22:06, 2 users, load average: 21.34, 23.01, 24.16
    Tasks: 567 total, 20 running, 547 sleeping, 0 stopped, 0 zombie
    Cpu(s): 63.0%us, 12.0%sy, 0.0%ni, 20.8%id, 0.0%wa, 1.0%hi, 3.1%si, 0.0%st
    Mem: 51532700k total, 48567912k used, 2964788k free, 550444k buffers
    Swap: 7124816k total, 0k used, 7124816k free, 44704736k cached

    PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
    15041 nobody 0 -19 79736 30m 6952 S 53.1 0.1 8:09.29 litespeed
    20394 someuser 25 0 69064 10m 2076 S 9.0 0.0 0:00.27 index_dl.cgi
    20756 someuser 25 0 73624 11m 2360 R 8.6 0.0 0:00.26 index_dl.cgi
    16314 someuser 15 0 138m 9876 6292 S 4.6 0.0 0:00.48 lsphp5
    20634 someuser 25 0 69248 10m 2288 S 4.3 0.0 0:00.13 index_dl.cgi
    20800 someuser 25 0 73580 11m 2360 R 4.0 0.0 0:00.12 index_dl.cgi
    4757 someuser 15 0 138m 10m 6616 S 3.7 0.0 0:01.70 lsphp5
    7801 someuser 15 0 138m 13m 8968 S 3.7 0.0 0:01.49 lsphp5
    20808 someuser 25 0 42720 9816 1484 R 3.7 0.0 0:00.11 index_dl.cgi
    20803 someuser 25 0 79836 12m 2396 S 3.3 0.0 0:00.10 index_dl.cgi
    20807 someuser 18 0 42716 9800 1484 R 3.3 0.0 0:00.10 index_dl.cgi
    20812 someuser 25 0 73580 11m 2360 S 3.3 0.0 0:00.10 index_dl.cgi
    11907 someuser 15 0 139m 13m 8904 S 3.0 0.0 0:00.85 lsphp5
    12113 someuser 16 0 139m 13m 8968 S 3.0 0.0 0:00.90 lsphp5
    19864 someuser 25 0 69064 10m 2076 S 3.0 0.0 0:00.09 index_dl.cgi
    19865 someuser 25 0 69064 10m 2076 S 3.0 0.0 0:00.09 index_dl.cgi
    19882 someuser 25 0 69064 10m 2076 S 3.0 0.0 0:00.09 index_dl.cgi
    20115 someuser 25 0 69068 10m 2076 S 3.0 0.0 0:00.09 index_dl.cgi
    20291 someuser 25 0 69064 10m 2076 S 3.0 0.0 0:00.09 index_dl.cgi
    20354 someuser 25 0 69064 10m 2076 S 3.0 0.0 0:00.09 index_dl.cgi
    20474 someuser 23 0 69200 10m 2272 S 3.0 0.0 0:00.09 index_dl.cgi
    20530 someuser 17 0 69196 10m 2288 S 3.0 0.0 0:00.09 index_dl.cgi
    20567 someuser 25 0 69068 10m 2076 S 3.0 0.0 0:00.09 index_dl.cgi
    20621 someuser 25 0 69248 10m 2288 S 3.0 0.0 0:00.09 index_dl.cgi
    20639 someuser 25 0 69248 10m 2288 S 3.0 0.0 0:00.09 index_dl.cgi
    20665 someuser 25 0 69196 10m 2288 S 3.0 0.0 0:00.09 index_dl.cgi
    20714 someuser 25 0 69064 10m 2076 S 3.0 0.0 0:00.09 index_dl.cgi
    20717 someuser 25 0 69200 10m 2288 S 3.0 0.0 0:00.09 index_dl.cgi
    19868 someuser 25 0 69068 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    19915 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    19916 someuser 25 0 69068 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    19923 someuser 25 0 69068 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    19937 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20047 someuser 25 0 69068 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20048 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20072 someuser 25 0 69064 10m 2080 S 2.7 0.0 0:00.08 index_dl.cgi
    20078 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20292 someuser 25 0 69068 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20294 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20301 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20353 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20361 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20410 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20415 someuser 25 0 69068 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20416 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20468 someuser 25 0 69068 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20469 someuser 25 0 69068 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20471 someuser 25 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    20819 someuser 19 0 69064 10m 2076 S 2.7 0.0 0:00.08 index_dl.cgi
    19944 someuser 25 0 69068 10m 2076 S 2.3 0.0 0:00.07 index_dl.cgi
    20131 someuser 25 0 69068 10m 2076 S 2.3 0.0 0:00.07 index_dl.cgi
    20133 someuser 25 0 69064 10m 2076 S 2.3 0.0 0:00.07 index_dl.cgi
    20171 someuser 25 0 69068 10m 2076 S 2.3 0.0 0:00.07 index_dl.cgi
    20296 someuser 25 0 69064 10m 2076 S 2.3 0.0 0:00.07 index_dl.cgi
    20366 someuser 25 0 69064 10m 2076 S 2.3 0.0 0:00.07 index_dl.cgi
    20460 someuser 25 0 69200 10m 2288 S 2.3 0.0 0:00.07 index_dl.cgi
    20585 someuser 25 0 69064 10m 2076 S 2.3 0.0 0:00.07 index_dl.cgi
    20748 someuser 25 0 69248 10m 2288 S 2.3 0.0 0:00.07 index_dl.cgi
    20805 someuser 25 0 69200 10m 2288 S 2.3 0.0 0:00.07 index_dl.cgi
    20815 someuser 25 0 69204 10m 2248 S 2.3 0.0 0:00.07 index_dl.cgi
    20823 someuser 25 0 42720 9812 1484 R 2.3 0.0 0:00.07 index_dl.cgi
    20824 someuser 25 0 42716 9812 1484 R 2.3 0.0 0:00.07 index_dl.cgi
    15011 root 6 -19 5892 436 352 S 2.0 0.0 0:19.76 httpd
    20239 someuser 25 0 69064 10m 2076 S 2.0 0.0 0:00.06 index_dl.cgi
    20271 someuser 25 0 69064 10m 2076 S 2.0 0.0 0:00.06 index_dl.cgi
    20588 someuser 25 0 69068 10m 2080 S 2.0 0.0 0:00.06 index_dl.cgi



    // iostat
    -bash-3.2# iostat
    Linux 2.6.18-308.11.1.el5 10/18/2012

    avg-cpu: %user %nice %system %iowait %steal %idle
    19.63 0.03 5.86 0.01 0.00 74.47

    Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
    hda 10.52 9.09 709.88 5434707 424570329
    hda1 0.00 0.00 0.00 2707 71
    hda2 5.21 0.27 126.23 161635 75498586
    hda3 0.00 0.00 0.00 1459 0
    hda4 0.00 0.00 0.00 8 0
    hda5 5.30 8.81 583.65 5268306 349071672



    Please let me know if there is something I can do to optimize.
  7. webizen

    webizen New Member

    it seems your cgi scripts take most cpu cycles. so your application is more of cpu bound.

    take a look at real-time stats in LiteSpeed Admin Console (Actions=> Real-Time Stats) and paste a screen shot here (as NiteWave requested). It should tell us whether your application processes are piling up and where bottleneck if any, etc.
  8. jaequery

    jaequery New Member

    okay, here is the screenshot:

    [​IMG]
  9. webizen

    webizen New Member

    Is this for busy time? lsws seems to be ok. NO processes in WaitQ which means no delay in processing PHP or CGI. BTW, is your up link 100Mb/s or 1Gb/s?
  10. jaequery

    jaequery New Member

    i don't think we really have a busy time, traffic is constant throughout as we also get lot of international traffic.
    uplink is 100mb. do you think we are hitting a bottleneck in network?
    i see we use 30mb down and 30-50mb up.
  11. webizen

    webizen New Member

    for 100Mb/s uplink, outbound (serving end user) can go 50Mb/s-90Mb/s depending on your traffic pattern. if you have many small downloads, 50-60Mb/s is probably the limit due to tcp overhead.
  12. jaequery

    jaequery New Member

    okay thanks, i think its definitely the uplink bottleneck.

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