Slow Site

Apr 12, 2007

my site is terribly slow, especially if there are several users accessing it at once.

Is there a way to to find out what exactly is slow, so I know what to tackle?

Since there is no caching at the moment, I think that is a good point to start.

The reason that there is no caching, is because Internet Explorer kept showing stale content, whatever I tried. How do you make sure that IE doesn't cache the dynamic pages?

This also means that images are not cached and pages with several images, seem to load a lot slower, sometimes not even showing all images the first time the page is loaded.

Does anybody know what I can do to improve on this?

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Site Slow

Dec 19, 2008

My site is very slow. But I can not find the reason.

Here is the top

Code:

top - 22:04:07 up 22:09, 1 user, load average: 0.44, 0.43, 0.34
Tasks: 402 total, 1 running, 401 sleeping, 0 stopped, 0 zombie
Cpu(s): 4.3%us, 0.7%sy, 0.0%ni, 94.8%id, 0.1%wa, 0.1%hi, 0.1%si, 0.0%st
Mem: 2074804k total, 2007836k used, 66968k free, 72720k buffers
Swap: 4192956k total, 96k used, 4192860k free, 641728k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
17133 apache 20 0 27752 9.9m 3392 S 4 0.5 0:02.25 httpd
6306 apache 20 0 27772 9.9m 3452 S 4 0.5 0:08.04 httpd
2261 mysql 20 0 251m 88m 4752 S 3 4.3 48:25.58 mysqld
17081 apache 20 0 27700 9.9m 3496 S 2 0.5 0:02.81 httpd
17105 apache 20 0 27112 9504 3428 S 2 0.5 0:02.62 httpd
11844 apache 20 0 27756 9.9m 3444 S 0 0.5 0:06.21 httpd
13676 apache 20 0 27700 9.9m 3440 S 0 0.5 0:04.74 httpd
13718 apache 20 0 27424 9856 3448 S 0 0.5 0:04.83 httpd
16690 apache 20 0 26628 8980 3408 S 0 0.4 0:01.88 httpd
When run
[root@nd10749 ~]# netstat -an |grep 80 |wc -l
2788

It was able to handle over 5000 connection without problem.

When checked the log, can not find anything suspicous.

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The server load for this machine is almost never above a 1. Right now as I type this the load is at 0.17, but it's unbearably slow! Taking up to 16 seconds to load a single page.

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After the IP assignment, it is still installed, and /etc/httpd/conf/plesk.conf.d/ip_default/domainname.conf shows the new certificate is being used.

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or any ideal why my server become slower?

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