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From Leif Hedstrom <zw...@apache.org>
Subject Re: Antw: Re: lazy http-answers from ATS?
Date Sat, 04 Dec 2010 21:57:02 GMT
On 12/04/2010 11:04 AM, Sascha Klose wrote:
> Hi Eric,
>
> thank you for the answer.
>
> Yes, the tested object is cachable and is in the cache (I see it in 
> extended2.log with TCP_HIT). I use a few bytes HTML file for my tests. 
> In general we have objects from 1 KB to 430 MB on the backend 
> HTTP-Server. Our cache hit-rate is 90%. I disabled eventfd because I 
> get an error with compiling the source on a debian system.

Are any of these large objects fetched using byte-range requests? 
There's a known issue where performance degrades badly when fetching 
small segments out of large objects, from cache. This is being worked on 
as we speak. Can you see if this is the problem you are running into?

-- Leif


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