Re: AW: [squid-users] Howto Clear Cache Periodicaly

Hi,
Thank you for your help. Can you let me know on other
setting baseline that I should look into using the
cache manager? i.e Select loop called" average time -
should be under
20 milliseconds , in order for me to monitor my squid
performance?

--- Adrian Chadd <adrian@creative.net.au> wrote:

> On Thu, Apr 13, 2006, nonama wrote:
> >
> > Thank you. I adapt some of the config from
> default. I
> > have commented it out, surfing seems a bit faster.
> > However still need some help on the cache.
>
> I'm coming into this a bit late so I apologise if I
> ask
> for anything you've already covered.
>
> * What kind of machine are you running it on?
> (RAM/CPU)
> * What kind of disks?
> * Is the machine paging/swapping? ("vmstat 1" on
> Linux servers
> will give a general indication how often its
> paging memory
> to/from disk.)
> * How many requests a minute is going through the
> machine?
> The cache manager cgi (cachemgr.cgi) or the
> 'squidclient' program
> can give you an indication. Try this on the squid
> server:
>
>
<host>:/usr/local/src/squid-monotone/net.cacheboy.squid.ucs-local/src#
> ./squidclient mgr:info | head -30
> HTTP/1.0 200 OK
> Server: squid/2.5.STABLE13-CVS-CACHEBOY
> Mime-Version: 1.0
> Date: Thu, 13 Apr 2006 07:52:14 GMT
> Content-Type: text/plain
> Expires: Thu, 13 Apr 2006 07:52:14 GMT
> Last-Modified: Thu, 13 Apr 2006 07:52:14 GMT
> X-Cache: MISS from <host>
> Proxy-Connection: close
>
> Squid Object Cache: Version
> 2.5.STABLE13-CVS-CACHEBOY
> Start Time: Thu, 13 Apr 2006 06:17:32 GMT
> Current Time: Thu, 13 Apr 2006 07:52:14 GMT
> Connection information for squid:
> Number of clients accessing cache: 1629
> Number of HTTP requests received:
> 563029
> Number of ICP messages received:
> 435155
> Number of ICP messages sent: 435655
> Number of queued ICP replies: 0
> Request failure ratio: 0.00
> Average HTTP requests per minute since
> start: 5946.3
> Average ICP messages per minute since start:
> 9196.8
> Select loop called: 64726368 times, 0.088 ms
> avg
> Cache information for squid:
> Request Hit Ratios: 5min: 22.7%, 60min:
> 20.5%
> Byte Hit Ratios: 5min: 14.3%, 60min:
> 13.1%
> Request Memory Hit Ratios: 5min: 3.9%,
> 60min: 6.4%
> Request Disk Hit Ratios: 5min: 37.4%,
> 60min: 39.1%
> Storage Swap size: 47923640 KB
> Storage Mem size: 98268 KB
>
>
> What you're after is the "Select loop called"
> average time (should be under
> 20 milliseconds) and the average HTTP requests per
> minute.
>
> It might be a few things;
>
> * You might find you're running out of RAM and its
> paging to disk;
> * You might be putting a a lot of requests through
> squid and need
> to move to aufs or diskd
> * Other stuff
>
>
>
>
> Adrian
>
>

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Received on Thu Apr 13 2006 - 02:59:44 MDT