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

On 10.05 05:38, Rahul Sinha wrote:
> My squid proxy is very slow as compared to cacheflow which is
> configured as a failover.
> Also squid eats up memory ::

> total used free shared buffers cached
> Mem: 1001 983 18 0 108 294
> -/+ buffers/cache: 580 421
> Swap: 1027 28 999
>
> Free memory is only 18 MB out of 1 GB

the "-/+ buffers/cache" is important. you see that 580 MB is used by
processes and 421 is left fot buffers, dick cache and unused.

You see that you have enough of memory.
 
> 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%

> 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

right. That is not much, and squid even doesn't eat all your CPU, so the
problems will probably lie somewhere else, probably in disk I/O.

> Squid configuration is as follows::

> cache_swap_low 90
> cache_swap_high 92

low difference for such small cache size.

> cache_dir ufs /var/squid/cache 8000 18 256
> cache_dir ufs /usr/local/squid/var/cache 2000 5 256

doesn't your cache eat too much space on filesystem?
read http://www.squid-cache.org/Doc/FAQ/FAQ-4.html#ss4.14

Also you should try aufs instead of ufs.

> memory_pools off

you should turn this on.

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