[squid-users] Memory Utilization high and Squid is slow

Hi,

My squid proxy is very slow as compared to cacheflow which is
configured as a failover.
Also squid eats up memory ::

[root@localhost root]# free -m
             total used free shared buffers cached
Mem: 1001 983 18 0 108 294
-/+ buffers/cache: 580 421
Swap: 1027 28 999
[root@localhost root]#

Free memory is only 18 MB out of 1 GB

Output of TOP ::
**************
 19:45:14 up 10 days, 16:25, 3 users, load average: 1.06, 1.11, 1.08
100 processes: 98 sleeping, 2 running, 0 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
           total 25.4% 0.0% 2.6% 0.0% 0.0% 2.2% 69.5%
           cpu00 100.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
           cpu01 0.0% 0.0% 2.5% 0.0% 0.0% 0.0% 97.4%
           cpu02 1.9% 0.0% 7.7% 0.0% 0.0% 4.1% 86.0%
           cpu03 0.0% 0.0% 0.3% 0.0% 0.0% 4.7% 94.8%
Mem: 1025424k av, 1009608k used, 15816k free, 0k shrd, 116416k buff
                    496012k actv, 97432k in_d, 14492k in_c
Swap: 1052216k av, 57496k used, 994720k free 277972k cached

  PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
 1653 root 25 0 600 20 4 R 24.6
0.0 15344m 0 cmaperfd
29173 squid 15 0 214M 210M 840 S 3.5 21.0
11:27 2 squid
 ***********************************

The %Memory by squid is 21.0

Squid configuration is as follows::
*************
http_port 8080

hierarchy_stoplist cgi-bin ?

acl QUERY urlpath_regex cgi-bin \?
no_cache deny QUERY

cache_mem 330 MB

cache_swap_low 90
cache_swap_high 92

maximum_object_size 8192 KB

maximum_object_size_in_memory 32 KB

cache_replacement_policy heap LFUDA

memory_replacement_policy heap LFUDA

cache_dir ufs /var/squid/cache 8000 18 256
cache_dir ufs /usr/local/squid/var/cache 2000 5 256
7cache_store_log none

auth_param basic children 5
auth_param basic realm Squid proxy-caching web server
auth_param basic credentialsttl 2 hours
auth_param basic casesensitive off
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320

half_closed_clients off

acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
acl SSL_ports port 443 563
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 563 # https, snews
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl CONNECT method CONNECT

http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports

http_access allow all

http_reply_access allow all

icp_access allow all

cache_effective_user squid

cache_effective_group squid

visible_hostname aaa-aaa

memory_pools off

coredump_dir /usr/local/squid/var/cache
***********************

Thanks,
Rahul
Received on Mon May 09 2005 - 18:08:23 MDT