keep in mind that SSL is heavy weight. By heavy weight I mean this. 450mhz cpu - handles 5-8 concurrent SSL/HTTPS requests, but maxes out cpu 2.0ghz cpu - handles 20-25 concurrent SSL/HTTPS requests, but maxes out cpu
See my previous post... the problem disappeared by now. The long load times happened with only one thread running on a 2.4GHz P4 while the
load on the server machine was not even noticable.
in general, if you're testing SSL, make sure the sampler isn't set to
download the images and other embedded resources.
Yep, I've disabled that anyways.
I've done quite a bit of testing in the past on the performance difference between HTTPS vs HTTP. You're lucky if the req/sec only drops half. More often than not, depending on how many images you have, it may be 3-5x slower. most large E-commerce sites use hardware accelerators for this reason. IBM, Rainbow technologies and several other companies sell SSL enabled ethernet cards or network attached SSL. Most routers today offer SSL acceleration, so my advice is to not use software SSL. hope that helps
We've been discussed this issue lately, too, and I'm feeling not too comfortable using mod_ssl and no hardware accelerated SSL, but as always
my bosses will not invest in such a thing unless they'll see the current
system go down under the heavy load.
Thanks for your response.
--
Best regards | Mit freundlichen Gr��en
Thomas Keller.inatec solutions GmbH, Public Key 0x94A5F429
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