Re: [squid-users] performance problem or not ?

Assuming you're running with diskd/aufs rather than ufs then I think
your numbers are alright. The default caching rules are quite permissive
and result in less caching than what might be possible, but more
"correct" caching.

You've paid for a support contract via Redhat - I suggest talking to
them about it. :)

Adrian

On Mon, Aug 06, 2007, Jan-Frode Myklebust wrote:
> I'm running squid (squid-2.6.STABLE6-4.el5) on an old IBM x330
> server (2x 1266MHZ PIII, 1GB RAM, 2 mirrored 36GB disks for OS
> and 20GB squid-spool), serving set-top-boxes' access to the
> internet.
>
> We have a feel for the proxy maybe being slow, but can't really
> pinpoint what the problem might be. Could somebody please have
> a look at the below numbers to see if something stands out as
> a potential performance problem ?
>
> Some stats from calamaris for the last 24 hours:
>
> Proxy statistics
> -----------------
> Total amount: requests 2818623
> unique hosts/users: hosts 3427
> Total Bandwidth: Byte 15607M
> Max. Bandwidth usage: MBit/sec 4.42
> Proxy efficiency (HIT [kB/sec] / DIRECT [kB/sec]): factor 10.45
> Average speed increase: % 100.25
> TCP response time of 100%% requests: msec 130
>
> Cache statistics
> ----------------
> Total amount cached: requests 2088373
> Request hit rate: % 74.09
> Bandwidth savings: Byte 8640M
> Bandwidth savings in Percent (Byte hit rate): % 55.36
> Average cached object size: Byte 4338
> Average direct object size: Byte 10004
> Average object size: Byte 5806
>
> Incoming request peak
> ---------------------
> 429/second
> 6439/minute
> 238080/hour
>
>
> TCP-Request duration distribution
> -----------------------------------------
> msec hits byte
> <= 10 48% 23%
> <= 100 85% 60%
> <= 1000 99% 86%
>
> File descriptors in use by squid are normally between 50-150, with peaks of
> 200-1000 once a week.
>
> CPU-usage is seldom above 10%, with 1-2% iowait and less than 1% system cpu.
>
>
>
> -jf

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