[squid-users] squid as http accelerator : now its again became slow

People ;

 I installed squid 2.6 stable for my Webserver(FreeBSD-6.2 ,1 GB Ram)
, where I runs a Plone 2.5 site on Zope2.9 .With other applications
such as postfix,mailman etc .

Squid-->Apache 2.2-->zope
(Previosly it was apache -->>zope ;But it was too slow so I put squid
as http accelerator)

 this setup worked fine for a couple of weeks ,
but yesetday my site became very slow again , I restarted squid
,apache, and zope server again , but for some time(nearly 20 minutes
) it will be fast after that again became slow .

What may be the issue , ? how can I improve the speed ?

This is my TOP out put

Any hints most welcome :

Thanks in advance
KK

last pid: 1792; load averages: 0.73, 0.50, 0.37
                              up 0+01:08:08 12:59:26
145 processes: 1 running, 142 sleeping, 2 stopped
CPU states: 5.1% user, 0.0% nice, 10.3% system, 0.0% interrupt, 84.6% idle
Mem: 690M Active, 106M Inact, 133M Wired, 45M Cache, 110M Buf, 14M Free
Swap: 2048M Total, 2048M Free

  PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
  731 mailman 1 8 0 99732K 97904K nanslp 0:43 3.56% python
  522 www 7 20 0 298M 295M kserel 14:37 0.78% python2.4
 1764 root 1 96 0 2668K 1936K RUN 0:00 0.28% top
  586 root 3 20 0 17272K 2588K kserel 1:06 0.00% gkrellmd
  516 www 1 4 0 19308K 17568K select 0:33 0.00% python2.4
  505 www 3 20 0 3212K 2024K kserel 0:32 0.00% pound
  526 www 3 20 0 89988K 87408K kserel 0:17 0.00% python2.4
  765 root 1 4 0 39340K 35628K select 0:12 0.00% perl5.8.8
  727 mailman 1 8 0 9744K 7764K nanslp 0:09 0.00% python
  728 mailman 1 8 0 8868K 7032K nanslp 0:08 0.00% python
  600 squid 1 4 0 13072K 11800K kqread 0:08 0.00% squid
  716 mysql 5 20 0 65220K 26708K kserel 0:06 0.00% mysqld
  434 bind 1 96 0 7528K 6292K select 0:06 0.00% named
  736 mailman 1 8 0 9468K 7632K nanslp 0:05 0.00% python
  739 mailman 1 8 0 9380K 7448K nanslp 0:04 0.00% python
  560 root 1 8 0 1236K 764K nanslp 0:04 0.00% powerd
  726 mailman 1 8 0 9496K 7540K nanslp 0:04 0.00% python
  605 root 1 96 0 25720K 24420K select 0:04 0.00% perl5.8.8
 1392 tesac 1 96 0 2684K 1820K STOP 0:04 0.00% top
  733 mailman 1 8 0 8388K 6512K nanslp 0:03 0.00% python
  660 root 1 96 0 2812K 1564K select 0:02 0.00% master
  502 www 6 20 0 33184K 23076K kserel 0:02 0.00% httpd
  670 postfix 1 96 0 4316K 3052K select 0:02 0.00% qmgr
  495 root 1 8 0 16160K 9588K nanslp 0:01 0.00% httpd
  839 www 4 20 0 27420K 16040K kserel 0:01 0.00% httpd
  501 www 4 20 0 23224K 13504K kserel 0:01 0.00% httpd
  503 www 5 20 0 25468K 14676K kserel 0:01 0.00% httpd
  365 root 1 96 0 1300K 848K select 0:01 0.00% syslogd
  553 root 1 96 0 2920K 1480K select 0:01 0.00% ntpd
 1390 tesac 1 96 0 6080K 2524K select 0:00 0.00% sshd
 1142 postfix 1 96 0 2876K 1592K select 0:00 0.00%
trivial-rewrite

Suspended

This is my df -h Output

 df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/ad4s1a 496M 91M 365M 20% /
devfs 1.0K 1.0K 0B 100% /dev
/dev/ad4s1f 19G 2.3G 15G 13% /home
/dev/ad4s1d 3.9G 71M 3.5G 2% /tmp
/dev/ad4s1e 9.7G 5.6G 3.3G 63% /usr
/dev/ad4s1g 39G 31G 4.5G 88% /var
devfs 1.0K 1.0K 0B 100% /var/named/dev
Received on Wed Mar 12 2008 - 01:36:42 MDT