Apache - GET files / High CPU Usage

03-13-2011 11:21 AM #1

Member

Apache - GET files / High CPU Usage

I recently purchased a VPS/WHM/Cpanel with 2GHz CPU, 4GB RAM, I use CMS and try to optimize the code in perfect mode, My problem is a lot of cpu usage of Apache GET, sometimes GET an image or JS or CSS consume more that 3% of cpu, How can I reduce that? what's wrong with this?
When I have more that 100 visitor at the same time my cpu usage get to highest 90%
I've been trying different PHP Handler and find DSO has the best performance but there is no different in SuPHP or FCGI in matter of CPU usage.
here is my Apache Status while the cpu usage and load is high:
Your kind advices is highly appreciated:

Server Version: Apache/2.2.17 (Unix) mod_ssl/2.2.17 OpenSSL/0.9.8e-fips-rhel5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.9 mod_perl/2.0.4 Perl/v5.8.8
Server Built: Mar 10 2011 11:22:30

Current Time: Sunday, 13-Mar-2011 18:47:55 IRST
Restart Time: Sunday, 13-Mar-2011 18:37:42 IRST
Parent Server Generation: 1
Server uptime: 10 minutes 13 seconds
Total accesses: 2472 - Total Traffic: 12.6 MB
CPU Usage: u59.17 s8.81 cu0 cs0 - 11.1% CPU load
4.03 requests/sec - 21.1 kB/second - 5.2 kB/request
53 requests currently being processed, 10 idle workers

GWWCW__WWKWWWKWKGGWKWWRWKW_RRGWWWWW_RWWWW_RKK_KC_W_WWW__KKWKWKC.
................................................................
......................

Scoreboard Key:
"_" Waiting for Connection, "S" Starting up, "R" Reading Request,
"W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup,
"C" Closing connection, "L" Logging, "G" Gracefully finishing,
"I" Idle cleanup of worker, "." Open slot with no current process

Srv PID Acc M CPU SS Req Conn Child Slot Client VHost Request
0-0 20080 0/22/54 G 3.98 324 0 0.0 0.07 0.24 178.252.142.1 zoomit.ir GET /images/stories/news/IT_news/japan-earthquick.jpg HTTP/1.1
1-1 19577 1/1/116 W 1.93 78 0 0.0 0.00 0.53 86.57.52.198 zoomit.ir GET /index.php?start=33 HTTP/1.1
2-1 28508 0/0/110 W 3.71 5 0 0.0 0.00 0.75 90.56.202.118 zoomit.ir OPTIONS /index.php?tmpl=component&option=com_jacomment&view=com
3-1 28374 2/2/99 C 0.00 1 0 0.6 0.00 0.54 78.109.196.10 zoomit.ir GET /components/com_k2/images/social/delicious_16.png HTTP/1.1
4-1 19769 0/2/118 W 2.62 47 0 0.0 0.00 0.77 205.185.113.185 zoomit.ir GET /user HTTP/1.1
5-1 7647 0/29/78 _ 3.01 0 0 0.0 0.05 0.36 65.49.14.58 zoomit.ir GET /components/com_jomcomment/templates/default/images/topshad
6-1 27855 0/6/143 _ 0.00 0 1 0.0 0.03 0.49 188.158.139.254 zoomit.ir GET /templates/rt_tachyon_j15/images/header/dark/header-bottom.
7-1 5686 1/11/77 W 2.10 78 0 0.0 0.07 0.36 86.57.52.198 zoomit.ir GET /it-news/internet-network/item/478-microsoft-counts-down-to
8-1 3154 0/14/85 W 3.49 171 0 0.0 0.04 0.32 85.185.82.97 zoomit.ir GET /images/stories/news/Black-V20.jpg HTTP/1.1
9-1 19833 2/4/44 K 3.28 1 0 2.9 0.00 0.19 85.185.82.97 zoomit.ir GET /media/k2/items/cache/c1a11e28afb03c9d81c096faa0a5ce8e_S.jp
10-1 19983 2/2/86 W 3.10 1 0 0.0 0.00 0.46 205.185.113.185 zoomit.ir GET /buying-guide HTTP/1.1
11-1 3211 0/11/70 W 0.49 109 0 0.0 0.15 0.60 86.57.52.198 zoomit.ir GET /index.php?start=44 HTTP/1.1
12-1 15650 0/1/66 W 0.00 144 0 0.0 0.00 0.33 91.99.145.83 zoomit.ir GET /images/stories/news/IT_news/japan-earthquick.jpg HTTP/1.1
13-1 19985 3/11/68 K 0.18 2 0 23.2 0.07 0.41 188.158.139.254 zoomit.ir GET /templates/rt_tachyon_j15/images/header/dark/menu-active.pn
14-1 9432 0/0/74 W 0.00 181 0 0.0 0.00 0.44 2.179.82.111 zoomit.ir GET /media/k2/items/cache/4fcf9d660236ddb62c8456017158615a_Gene
15-1 20043 3/3/56 K 2.89 1 206 23.5 0.02 0.24 86.57.52.198 zoomit.ir GET /media/k2/items/cache/0fcccca5b510e5bb86a94045046d252d_S.jp
16-0 10015 5/9/24 G 0.31 449 0 46.9 0.06 0.13 46.100.169.100 zoomit.ir GET /media/system/js/mootools.js HTTP/1.1
17-0 30673 0/3/18 G 1.10 259 0 0.0 0.01 0.15 85.198.19.210 zoomit.ir GET /media/k2/items/cache/218fa54275e0e31c37b4e5091d9112ba_L.jp
18-1 20052 2/2/29 W 0.00 107 0 77.4 0.08 0.23 86.57.52.198 zoomit.ir GET /index.php?start=99 HTTP/1.1
19-1 28528 1/1/62 K 0.00 0 4512 0.5 0.00 0.41 65.49.14.58 zoomit.ir GET /templates/rt_tachyon_j15/images/accents/orange/body-rokinp
20-1 20324 2/5/39 W 1.75 0 0 7.2 0.01 0.12 205.185.113.185 zoomit.ir GET /user/register-login-logout HTTP/1.1
21-1 9455 0/12/36 W 3.15 95 0 0.0 0.04 0.18 2.179.82.111 zoomit.ir GET /articles/video-audio/television/item/31-%D8%AD%D9%82%D8%A7
22-1 2041 0/20/98 R 0.33 158 82 0.0 0.11 0.33 ? ? ..reading..
23-1 24559 0/0/62 W 0.47 69 0 0.0 0.00 0.38 66.249.72.228 zoomit.ir GET /articles/hardware-news/hardware-others/item/index.php?opti
24-1 27864 2/4/114 K 0.00 2 42 0.6 0.00 0.52 65.49.14.58 zoomit.ir GET /templates/rt_tachyon_j15/images/body/module-gradient2.png
25-1 20337 0/6/86 W 1.78 11 0 0.0 0.04 0.27 79.127.30.234 zoomit.ir GET /it-news/item/486-incredible-japan-earthquick-skycraft HTTP
26-1 5572 0/32/78 _ 0.69 0 1 0.0 0.17 0.35 188.158.139.254 zoomit.ir GET /templates/rt_tachyon_j15/images/accents/blue/pill-r.png HT
27-1 9457 0/2/10 R 1.43 159 0 0.0 0.00 0.05 ? ? ..reading..
28-1 5600 0/1/36 R 0.00 158 54170 0.0 0.03 0.32 ? ? ..reading..
29-0 14274 0/6/34 G 0.28 322 0 0.0 0.03 0.24 85.198.19.210 zoomit.ir GET /images/stories/news/tv/lg2011table-1l.jpg HTTP/1.1
30-1 9458 1/13/38 W 3.02 44 0 21.2 0.06 0.19 95.38.50.71 zoomit.ir GET /media/system/js/mootools.js HTTP/1.1
31-1 20339 1/1/54 W 2.88 1 0 16.4 0.02 0.32 86.57.52.198 zoomit.ir GET /index.php?start=66 HTTP/1.1
32-1 5612 1/2/4 W 0.00 183 0 0.0 0.02 0.02 91.99.189.84 zoomit.ir GET /media/system/js/mootools.js HTTP/1.1
33-1 28529 0/0/7 W 0.00 1 0 0.0 0.00 0.05 209.85.224.91 zoomit.ir GET /home?format=feed HTTP/1.1
34-1 15696 3/10/15 W 1.73 102 0 1.8 0.04 0.06 86.57.52.198 zoomit.ir GET /index.php?start=88 HTTP/1.1
35-1 20340 0/7/24 _ 0.23 0 1 0.0 0.07 0.11 188.158.139.254 zoomit.ir GET /media/k2/items/cache/051a22dde3b372e5c058fbc303756df4_L.jp
36-1 5650 0/8/9 R 0.09 160 232 0.0 0.07 0.09 ? ? ..reading..
37-1 20419 0/5/10 W 0.15 10 0 0.0 0.02 0.03 205.185.113.185 zoomit.ir GET /user/groups HTTP/1.1
38-1 15699 14/30/36 W 3.78 3 0 156.2 0.18 0.20 86.57.52.198 zoomit.ir GET /index.php?option=com_jomcomment&no_html=1&task=img&jc_sid=
39-1 28533 0/0/32 W 4.04 1 0 0.0 0.00 0.05 94.183.58.254 zoomit.ir GET /index2.php?option=com_jomcomment&task=userinfo&no_html=1 H
40-1 20425 0/3/26 W 0.00 33 0 0.0 0.04 0.22 109.162.139.198 zoomit.ir GET /it-news/item/486-incredible-japan-earthquick-skycraft HTTP
41-1 15701 0/27/30 _ 1.67 0 0 0.0 0.14 0.15 188.158.139.254 zoomit.ir GET /templates/rt_tachyon_j15/images/logo/dark/logo.png HTTP/1.
42-1 5742 0/16/16 R 1.43 153 2636 0.0 0.06 0.06 ? ? ..reading..
43-1 28534 1/1/8 K 0.00 0 437 0.5 0.00 0.04 78.109.196.10 zoomit.ir GET /components/com_k2/images/social/facebook_16.png HTTP/1.1
44-1 15702 2/11/11 K 0.18 1 0 3.1 0.09 0.09 85.185.82.97 zoomit.ir GET /media/k2/items/cache/f0ba2bfd8f936a77d3b146acfe9443c7_S.jp
45-1 28535 0/0/4 _ 0.32 5 6543 0.0 0.00 0.02 127.0.0.1 vps-1039725-2926.manage.myhosti OPTIONS * HTTP/1.0
46-1 27867 2/4/6 K 0.00 0 0 4.9 0.01 0.01 85.185.82.97 zoomit.ir GET /media/k2/items/cache/218fa54275e0e31c37b4e5091d9112ba_S.jp
47-1 25632 2/5/5 C 1.53 0 0 5.8 0.01 0.01 65.49.14.58 zoomit.ir GET /components/com_jomcomment/smilies/buttons.gif HTTP/1.0
48-1 25633 0/10/10 _ 0.00 3 9145 0.0 0.02 0.02 127.0.0.1 vps-1039725-2926.manage.myhosti OPTIONS * HTTP/1.0
49-1 28536 0/0/7 W 0.00 0 0 0.0 0.00 0.04 127.0.0.1 vps-1039725-2926.manage.myhosti GET /whm-server-status HTTP/1.1
50-1 26225 0/7/7 _ 0.00 0 1 0.0 0.08 0.08 188.158.139.254 zoomit.ir GET /templates/rt_tachyon_j15/images/body/body-bg.png HTTP/1.1
51-1 26231 1/3/3 W 1.49 1 0 0.0 0.00 0.00 205.185.113.185 zoomit.ir GET / HTTP/1.1
52-1 26232 1/3/3 W 1.57 2 0 0.0 0.01 0.01 205.185.113.185 zoomit.ir GET /user/friend-list HTTP/1.1
53-1 26243 0/3/3 W 0.00 35 0 0.0 0.01 0.01 84.241.27.77 zoomit.ir GET /it-news/item/486-incredible-japan-earthquick-skycraft HTTP
54-1 26245 0/3/3 _ 1.50 0 6731 0.0 0.00 0.00 90.56.202.118 zoomit.ir GET /templates/rt_tachyon_j15/favicon.ico HTTP/1.1
55-1 26246 0/2/2 _ 0.15 2 15170 0.0 0.01 0.01 85.133.192.17 zoomit.ir GET /images/stories/news/weblinks/wechoosethemoon_sm.jpg HTTP/1
56-1 26255 1/4/4 K 0.15 0 10419 0.3 0.01 0.01 65.49.14.58 zoomit.ir GET /index.php?option=com_jomcomment&no_html=1&task=img&jc_sid=
57-1 26279 2/6/6 K 0.00 1 1 0.6 0.01 0.01 65.49.14.58 zoomit.ir GET /templates/rt_tachyon_j15/images/body/light-div.png HTTP/1.
58-1 26318 0/0/0 W 0.00 48 0 0.0 0.00 0.00 95.38.50.71 zoomit.ir GET /components/com_k2/css/k2.css HTTP/1.1
59-1 26319 4/9/9 K 0.00 0 561 11.7 0.02 0.02 86.57.52.198 zoomit.ir GET /media/k2/items/cache/69b5f85da08d181d48515c6d41e3e0a5_S.jp
60-1 27879 0/0/0 W 0.00 29 0 0.0 0.00 0.00 80.191.91.25 zoomit.ir GET / HTTP/1.1
61-1 27880 3/4/4 K 0.00 1 346 8.5 0.01 0.01 86.57.52.198 zoomit.ir GET /media/k2/items/cache/3b44b5000d3ada04c028c395cd05cbfb_S.jp
62-1 27881 2/5/5 C 0.00 0 42 1.8 0.00 0.00 65.49.14.58 zoomit.ir GET /templates/rt_tachyon_j15/images/accents/orange/rtl/newspag
63-1 - 0/0/1 . 0.00 16 7513 0.0 0.00 0.00 127.0.0.1
Srv Child Server number - generation
PID OS process ID
Acc Number of accesses this connection / this child / this slot
M Mode of operation
CPU CPU usage, number of seconds
SS Seconds since beginning of most recent request
Req Milliseconds required to process most recent request
Conn Kilobytes transferred this connection
Child Megabytes transferred this child
Slot Total megabytes transferred this slot
SSL/TLS Session Cache Status:
cache type: DBM, maximum size: unlimited
current sessions: 0, current size: 0 bytes
average session size: 0 bytes

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03-14-2011 02:16 AM #2

Massoud

Member

Re: Apache - GET files / High CPU Usage

any ideas why apache consume alot of cpu usage for GET a file on a server ?

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03-14-2011 08:40 AM #3

cPanelTristan

cPanel Staff

Follow @miraenda

Re: Apache - GET files / High CPU Usage

The CPU usage could be high if the image is large. Optimize the images to reduce the size for one way to reduce CPU and memory.

Another way would be to use mod_deflate to help optimize and compress website content:

EasyApache Deflate Module - cPanel Inc.

This option is in WHM > EasyApache (Apache Update) (or using /scripts/easyapache in root SSH) under "Apache Built-in Modules" on Step 6's Exhaustive Options List. It is listed as Deflate there.

Upon recompiling Apache to add mod_deflate, you will then have an option in cPanel called Optimize Website that will allow you to configure that for each specific account.

cPResources: Support Options | More Support Options | Forums Search | cPanel.net Site Search | Mailing Lists(Alt) | Docs
-- Tristan, Forums Technical Analyst, cPanel Tech Support

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03-14-2011 11:29 AM #4

Massoud

Member

Re: Apache - GET files / High CPU Usage

Thank you for your answer, but all of the images on my website have jpeg comression and I can see one image that has just 3kb consume 20% of cpu usage, I think there is something wrong with it but I can not see anything in php or apache error log, by the way thank you for your help I'm going to install the mod DEflate and I'll inform you about the result.

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