Marc Elsen <[EMAIL PROTECTED]> writes:

> Dusan Djordjevic wrote:
>> 
>> Monday 07 July 2003 10:56, Marc Elsen:
>> >  > I plan to install few instances of Squid on one multiprocessor box
>> >  > and balance load between them. I plan to use LinuxVirtualServer
>> >  > for it. Do someone have that kind of solution ? What load
>> >  > balancing you suggest ? Any other recommendation ?
>> >   Do you have  an idea of the sustained http reqs/sec , your squid
>> >   has to deal with ?
>> 
>> Yes. I need specific non-caching proxy. There are 3000-5000 requests per
>> second. Currently I have one 4CPU box i would like to deploy.
>
>  Hm, I think I read that squid can give you a max. of about 300
> reqs/sec.
>  As stated before on the list squid on itself can not make
>  use of more then one cpu.
>
>  So I think in a virtual server setup, you may be better off with 4
>  separate boxes (probably), I think it would give you more
>  flexibility and squid service uptime, if one box is down,
>  for instance.

If you're running on Linux, there is a trick which can balance
between 2 squid instances running on the same box, discriminating between
the two depending on the client IP address.
Run the second instance on some other http_port (i.e. 4128) and add this
iptables rule:

iptables -t nat -A PREROUTING -s 0.0.0.0/0.0.0.1 -p tcp \
         --destination-port 3128 -j REDIRECT --to-ports 4128


More instances (in powers of 2) should be possible using similar tricks.


-- 
        kinkie (kinkie-squid [at] kinkie [dot] it)
        Random fortune, unrelated to the message:
Can't act.  Slightly bald.  Also dances.
                -- RKO executive, reacting to Fred Astaire's screen test.
                   Cerf/Navasky, "The Experts Speak"

Reply via email to