Re: [squid-users] cache_peer weighting

> Hi Guys,
>
> Wanted to double check I hadn't screwed up my config lines before
> dropping a bug report....

Good choice. :-)

round-robin == round-robin: each server trued in sequence until all have
bee tried then repeats. No weighting there.

IIRC Squid3.0 introduces weighted-round-robin for this purpose. Otherwise
there is CARP in 2.6.

Amos

>
> I've got some of my parent's configured with weight's, as we're trying
> out some performance optimizing code on perlbal... thing is, setting a
> weight in squid doesn't seem to make a difference to the number of
> requests that squid sends back to the parent. This is Squid-2.6STABLE17.
>
> [root@cache1 ~]# grep perlbal1-80 /squidperlbal | wc -l
> 2
> [root@cache1 ~]# grep perlbal2-80 /squidperlbal | wc -l
> 248
> [root@cache1 ~]# grep -v perlbal[12]-80 /squidperlbal | wc -l
> 750
>
> --I expected at least the inverse of the above, as unless my
> understanding of squid weighting is completely incorrect, a weight of
> 100 should mean that peer is being used for 100 times more connections
> than the weight=1 (default weight) peers, no?
>
> Squid is configured with the following:
>
> ###ws.audioscrobbler.com & mainsite
> cache_peer 10.0.0.14 parent 80 0 no-query originserver no-digest
> no-netdb-exchange name=saruman2-80 round-robin
> cache_peer_access saruman2-80 allow mainsite
>
> cache_peer 10.0.0.14 parent 80 0 no-query originserver no-digest
> no-netdb-exchange name=saruman2-81 round-robin
> cache_peer_access saruman2-81 allow mainsite
>
> cache_peer 10.0.0.35 parent 80 0 no-query originserver no-digest
> no-netdb-exchange name=perlbal1-80 round-robin weight=100
> cache_peer_access perlbal1-80 allow mainsite
>
> cache_peer 10.0.0.35 parent 81 0 no-query originserver no-digest
> no-netdb-exchange name=perlbal1-81 round-robin
> cache_peer_access perlbal1-81 allow mainsite
>
> cache_peer 10.0.0.114 parent 80 0 no-query originserver no-digest
> no-netdb-exchange name=perlbal2-80 round-robin weight=100
> cache_peer_access perlbal2-80 allow mainsite
>
> cache_peer 10.0.0.114 parent 81 0 no-query originserver no-digest
> no-netdb-exchange name=perlbal2-81 round-robin
> cache_peer_access perlbal2-81 allow mainsite
>
> cache_peer 10.0.0.114 parent 82 0 no-query originserver no-digest
> no-netdb-exchange name=perlbal2-82 round-robin
> cache_peer_access perlbal2-82 allow mainsite
>
> cache_peer 10.0.0.114 parent 83 0 no-query originserver no-digest
> no-netdb-exchange name=perlbal2-83 round-robin
> cache_peer_access perlbal2-83 allow mainsite
> ###ws.audioscrobbler.com & mainsite Ends
>
> I also tried removing round-robin, in case that was screwing up the
> config, however, i found that this merely means all requests go to
> saruman2-80.
>
> Thanks!
> --
> Tony Dodd, Systems Administrator
>
> Last.fm | http://www.last.fm
> Karen House 1-11 Baches Street
> London N1 6DL
>
> check out my music taste at:
> http://www.last.fm/user/hawkeviper
>
Received on Mon Dec 17 2007 - 17:53:46 MST