Am 27.01.2011 16:34, schrieb Matus UHLAR - fantomas:
On 22.01.11 00:53, john.3.new...@bt.com 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.
Good point. But to have some prove at hand, don't change the random
device yet - instead monitor /proc/sys/kernel/random/entropy_avail with
e.g. watch. If your're going of of random bytes - ka-ching :)
Regards,
Edgar
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