[squid-users] Re: Carp issue - not balancing load properly

Nevermind this... Don't ask :(

On Sat, Oct 8, 2011 at 8:45 PM, david robertson <dr_at_nevernet.com> wrote:
> Hello, I'm having a bit of an issue with CARP, specifically balancing the load.
>
> I have 3 frontend servers that cache only to memory, and 2 backend
> servers that cache only to disk (one aufs device, and one coss device
> on each).  The two backend servers are running on identical hardware,
> and running an identical version of Squid (2.7.STABLE9).  There's
> nothing funky about the configs of either the backends, nor the
> frontends.
>
> The issue is that one backend server is always receiving exactly twice
> the amount of traffic from the 3 frontend servers at all times.
>
> Frontend cache_peer lines:
> cache_peer 192.168.193.78 parent 4001 0 carp login=PASS name=backend no-digest
> cache_peer 192.168.193.116 parent 4001 0 carp login=PASS name=backend2 no-digest
>
> No matter what I try, the second server in the list (.116) gets twice
> the traffic that .78 gets.
>
> Output of the cluster stats, gathered from squidclient:
>
> hostname        hits/sec        cacherate
> =================================================
> squid           47              43%
> squid2          39              34%
> squid4          39              33%
> -------------------------------------------------
>                125             36%
>
> squid3          42              25%
> squid5          85              27%
>
> (Yes, I know 125 hits/sec is low, but it's a low-traffic hour, and we
> frequently get large bursts of traffic)
>
>
> Any help would be much appreciated.
>
Received on Sun Oct 09 2011 - 01:17:01 MDT