Re: quick question about polygraph

From: Alex Rousskov (rousskov@ircache.net)
Date: Tue Jun 13 2000 - 21:52:50 MDT


On Tue, 13 Jun 2000, Y. Charles Hu wrote:

> Is there a way to make polygraph to generate different hit ratio at
> different phases? like we want 40% hit ratio in top1 but 60% hit
> ratio in top2. I guess this may complicate the working set a bit,
> but suppose we don't care about the strict 4-hr working set.

Sure, see "recur_factor" field of the Phase object which is
actually used by the WebAxe-1 workload:
        http://polygraph.ircache.net/Workloads/WebAxe-1/
Recur_factor to hit ratio is what load_factor_*s to request rate. The
latter are documented at
        http://polygraph.ircache.net/doc/pgl/types.html#Pgl:Phase

Alex.



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