It is. In fact it's pretty easy to test web caches that are being
balanced. (Testing the director itself requires a different set of
workloads and the polyproxy server, which isn't documented yet...Alex
tells me that balancer testing tools will come pretty soon, however.
Until then it's )
If you're testing your caches, then you simply set up the client/server
pairs as usual, with the balancer/caches on the same network. Tell the
clients to use your balancer as the proxy using the --proxy commanline
directive like so:
polyclt --config yourworkload.pg --verb_lvl 10 --proxy 10.1.0.1:3128
--log yourlog.log
Assuming you have your balancer sitting on 10.1.0.1 and redirecting port
3128. From there you need your caches listening on that port and able
to reach the client subnet (I assume you're using DR or TUN for your
balancer, since I know you're balancing Squid's on Linux).
This is pretty much the same way you'd test a single cache, only instead
of using the cache server address you use your VIP for the --proxy which
then redirects to your real caches.
Hope this helps. (I'm about to start in on this adventure myself.)
Thomas Proell wrote:
>
> Hi!
> I have installed the Linux Virtual Server. This software redirects
> incoming requests to several servers. Load is distributed this way.
>
> Now, I wonder if I can use the Web Polygraph to measure the possible
> throughput. Is this possible with the redirection/traffic split?
>
> Thomas
--
Joe Cooper <joe@swelltech.com>
Affordable Web Caching Proxy Appliances
http://www.swelltech.com
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