Workloads and real world bandwidth savings

Hi all-

We run NetApp and Inktomi caches in transparent-forward mode for general
user browsing. Up to about 12 months ago the bandwidth savings that Polymix
4 showed (high 30s%) tallied quite well the real-world figures. Over the
course of the past year, however, the real-world figures have been dropping
- NetApps now run around 19%, Inktomi around 29%. Obviously we are trying to
find out why they are different.

However, I'd be interested to know if this general drift is well known: it
looks as if changes in general web content have invalidated the Polymix 4
workload. Certainly I notice that the average object size of real-world
content is now quite a bit larger than Polymix 4, whereas a year or so back
it was somewhat smaller.

Any thoughts on this? Is there a need for a new workload?

Thanks!

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Received on Fri Nov 3 08:59:01 2006