Greetings all,
I noticed a posting to the modssl-users list concerning performance figures
of Apache-modSSL. I was wondering if you've came across any information in
that regard. I am getting quite bad performance with apache-modSSL on a
SPARC Solaris 8 platform.
Iplanet is achieving 98 hits/second with versus 6.8 hits/second with
apache-modssl on average.
I am using a very simple test scenario using LoadRunner 7.02. See tests
details below :
Background:
-----------
During performance tests I discovered a severe performance problem with
Apache-modssl. The versions subjected to the tests were :
Test Versions:
-------------
apache-1.3.19-modSSL-2.8.3 without MM file-based SSL session caching.
apache-1.3.19-modSSL-2.8.3 with MM and shared memory based SSL session
caching.
apache-1.3.23-modSSL-2.8.6 with MM and shared memory based SSL session
caching.
iplanet 6.0sp1-128bit - default (out of the box) configuration
Test Platform:
--------------
Webserver : SPARC Solaris 8 10/01 with latest patches installed
Load generator: Pentium III 512MB, win2k, LoadRunner 7.02 - Emulating IE 5.5
Test Scenario:
--------------
I created a simple load test scenario using LoadRunner. (version 7.02 on a
512MB PIII w/win2k) The scenario consists of accessing three static HTML
pages. Those pages contain no images. Running the scenario with 3 concurrent
users (loadrunner virtual users) resulted in the following :
Test Results:
-------------
+ apache-1.3.19-modSSL-2.8.3-openSSL-0.9.6a without MM - Concurrent Users:
03
Running time : 11 minutes
Hits/Second : 4.72 (average)
Webserver load : 3.2 (average)
+ apache-1.3.19-modSSL-2.8.3-openSSL-0.9.6a with MM - Concurrent Users: 03
Running time: 11 minutes
Hits/Second : 6.57 (average)
Webserver load : 3.2 (average)
+ apache-1.3.23-modSSL-2.8.6-openSSL-0.9.6c with MM - Concurrent Users: 03
Running time: 11 minutes
Hits/Second : 6.79 (average)
+ iplanet 6.0sp1-128bit - Concurrent Users: 03
Running time: 11 minutes
Hits/Second : 98.2 (average)
Webserver load : 4.2 (average)
I turned off modSSL within the same apache configuration and increased the
number of concurrent users in LoadRunner to 90. This resulted in a bit more
than 170 hits/second. Therefore, I concluded that modSSL is having some
severe performance problems.
Perhaps I am missing some tuning parameters specific for modSSL ?
Any input very welcome.
Cheers,
Magid.
=================================
Magid Latif
Systems Engineer
iPIN
19 Davis Drive
Belmont, CA 94002
Direct: +1 (650) 232 3704
Main: +1 (650) 232 3700 x3704
Fax: +1 (650) 232 5116
http://www.iPIN.com
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