Re: mod_ssl, erratic performance

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On 22.01.11 00:53, john.3.newton@xxxxxx wrote:
> 
> We recently moved our production webserver from a sparc platform (T2000)
> to an x86/64 platform (x2270-m2) and we have noticed an erratic response
> time for downloads of files using SSL. This seems to randomly occur with
> any files about 10k or larger. For instance, I have been using a test file
> of 140K, and it can take 0.5 or 4.8 seconds to transfer. When using the
> sparc platform, it always only takes 0.5 seconds.
> 
> I noticed this as we are using an external monitoring system (Gomez.com)
> and we started seeing these wildly varying times for transaction
> processing.
> 
> I have tried a cut down SSL setup for testing, and examined every
> directive and option, and I can't make sense of the problem. I'm using the
> following configuration string, and I'd be happy to include the
> configuration setups..
> 
> I can move the bare-bones configuration between the sparc and x86
> platforms and get normal response on the sparc, and irregular on the x86.

random device can make a huge difference. What do you use for random data?
/dev/random or /dev/urandom? If the rofmer, try the latter if it helps.
-- 
Matus UHLAR - fantomas, uhlar@xxxxxxxxxxx ; http://www.fantomas.sk/
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