monitor squid performance

[Siljumon S]

I'm running a squid server for enterprise proxy server. The number of concurrent users are about 800. Many time the processor utilisation of the squid process reaches 100 %

How can I improve the performance of the squid? How can I do fine tuning or what is the hardware requirement to server this much load. My link speed is 2 Mbps

[Patrick Terlisten]

Hi,

would you told us a bit more about your hardware? Which distribution and which version of squid?

Regards,
Patrick

[Steven E. Protter]

Hello Sijumon,

Just because squid takes 100% of cpu does not mean anything is wrong. If there is nothing else important happenning on the machine then squid using the whole cpu is not a problem.

If there are other important processes being denied cpu time by squid then think about patching squid.

It is a common misconeption that 100% use is a bad thing. What is it there for if not be used?

SEP

[Siljumon S]

Hardware Details

HP Proliant DL 380

DUAL CPU
model name : Intel(R) Xeon(TM) CPU 2.80GHz
stepping : 9
cpu MHz : 2789.894
cache size : 512 KB

1 GB RAM

Total 72 BG HDD SPACE

Details of the space used by SQUID
output of mount
/dev/cciss/c0d0p7 on /var/log/squid type ext3 (rw,noatime)
/dev/cciss/c0d0p13 on /proxy_cache type ext3 (rw,noatime)
output of df
/dev/cciss/c0d0p7 20G 1.6G 17G 9% /var/log/squid
/dev/cciss/c0d0p13 1.7G 69M 1.6G 5% /proxy_cache


OS: FC2
kernel: 2.6.5-1.358smp


How can I monitor my squid performance and make sure that it is functioning properly.

[Steven E. Protter]

If you have bucks(moolah, cash, etc), the best tool is Glance for Linux.

It has a nice gui and you can drill in to monitor performance.

Otherwise perhaps gpm graphic performance monitor, which is pretty standard for Linux installs.

Last, put together some sar scripts.

SEP

[Siljumon S]

Thank you all.My squid server is still using 100 % in between. It is due to the load only and it does not create any problem for the server