Re: Test transparent cache pool

From: Alex Rousskov (rousskov@measurement-factory.com)
Date: Tue Sep 20 2005 - 13:26:24 MDT


On Tue, 2005-09-20 at 04:01 +0000, Tran Hong Quan wrote:

> I have L4 Switch which redirects all http packets to transparent cache
> server pool. Can I test total throughput of my transparent cache
> server pool by using commands like these:
>
> polysrv \
> --config /usr/local/polygraph/workloads/simple.pg \
> --verb_lvl 10
> polyclt \
> --config /usr/local/polygraph/workloads/simple.pg \
> --verb_lvl 10

Yes, although production testing using simple.pg workload may not be a
good idea because it does not produce a realistic traffic pattern.

> I means that can I run polyclt without --proxy option?

Yes.

> Because http requests will be redirected automatically to cache pool
> by L4 Switch and the switch will do the load balancing on all cache
> servers.

If L4 load balances based on IP addresses or ports, then simple.pg will
not work well for you because it does not use a realistic (i.e., large)
pool of source addresses.

HTH,

Alex.



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