Hi, generally speaking: encryption of data (which SSL does in comparison to not using SSL) of course cost computing time. Thats the reason why you'll get less processed requests when using SSL. Thats the price for having secure data transfer, which does not mean that you should consider turning off SSL, depending on which site your're running.
Secondly, the results you get from your load test of course strongly depend on it's design, but probably turning on the "KeepAlive" directive may improve your results, depending whether your test script supports this. NB (I): Is your test client software running on the same server? This would downgrade results, too. NB (II): A sun Netra T1 (UltraSPARC-IIi 440MHz, Memory 512 MB) (a quite low end server) I recently tested processed about 70 requests per second (using SSL). NB (II): Which hardware are you're using? Kind regards, Bert Courtin -----Original Message----- From: Patrick Dionisio [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 30, 2002 10:38 PM To: [EMAIL PROTECTED] Subject: Performance Tuning on Apache 1.3.24 with mod_ssl 2.8.8 Hi, I'd like to know what kind of tricks I can apply to improve the performance of my apache server which uses mod_ssl. The OS I'm using is Linux 7.2. Currently, I have a client script that generates n number of requests to the apache server. The page it requests is a static page. With SSL turned on, I'm only able to get at most 7 to 8 requests per second. With SSL turned off, I am able to get 50+ requests per second. I've tried setting SSLMutex to use sem and SSLSessionCache to shm:/usr/local/apache/logs/ssl_gcache_data(512000), but those changes didn't improve the results. Any suggestions or ideas? Thanks. Patrick __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com ______________________________________________________________________ Apache Interface to OpenSSL (mod_ssl) www.modssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED] ______________________________________________________________________ Apache Interface to OpenSSL (mod_ssl) www.modssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]
