Hello,
I had been doing some benchmark testing with ApacheBench to compare the
performance differences between mod_cgi and mod_perl and they were going
great until all of the sudden my results fell way out of line. I need
help! After I switched the max requests per child from 1 to 5000 the
trouble began. Ever since my results have been around 1100 requests per
second. Being so adamant in testing, I neglected in stepping back and
simplifying the issue. After trying to run a script from Netscape, I
got the following familiar error. I have an excerpt from my error_log
when things went bad. I have checked my permissions like the Apache FAQ
recommends but they look fine. Not sure what to do. I really
appreciate the help guys.
Rich Lemanski
*****************************************************************
BROWSER ERROR
Forbidden
You don't have permission to access /perl/modperl.pl on this server.
Apache/1.3.12 Server at LaZaRus Port 80
*****************************************************************
TEST RESULTS
All tests performed with AB = ApacheBench.
n = number of requests;
c = concurrent user requests;
mod_cgi/mod_cgi = mcmc = mod_cgi running mod_cgi script
mod_cgi/mod_perl = mcmp = mod_cgi running mod_perl script
mod_perl/mod_perl = mpmp = modPerl running mod_perl script
mod_perl/mod_cgi = mpmc = modPerl running mod_cgi script
rps = requests per second
ss = start servers
mcps = max clients per server
mrpc = max requests per child
minss = min spare servers
maxss = max spare servers
ss = 8; mcps = 150; mrpc = 100; minss = 5; maxss = 20
Type; n; c mcmc mcmp mpmp mpmc
AB; 100; 10 7.24rps 7.18rps 571.43rps 301.20rps
AB; 100; 10 7.16rps 7.63rps 578.03rps 295.86rps
AB; 100; 10 7.53rps 7.69rps 436.68rps 172.71rps
AB; 1000; 10 7.71rps 7.74rps 544.96rps 158.25rps
AB; 1000; 10 7.40rps 7.75rps 476.87rps 162.76rps
AB; 10000; 500 27.75rps 23.75rps 462.15rps 135.40rps
AB; 10000; 500 21.68rps 29.02rps 463.91rps 110.25rps
ss = 10; mcps = 100; mrpc = 1; minss = 5; maxss = 20
Type; n; c mcmc mcmp mpmp mpmc
AB; 1000; 50 24.93rps 25.48rps 25.25rps 25.63rps
AB; 1000; 50 24.85rps 25.02rps 24.97rps 24.80rps
*****************************************************
ss = 10; mcps = 10; mrpc = 5000; minss = 5; maxss = 20
Type; n; c mcmc mcmp mpmp mpmc
AB; 1000; 50 1104.97rps 1123.60rps 1104.97rps 1107.42rps
AB; 1000; 50 1121.08rps 1124.86rps 1096.49rps 1104.97rps
*****************************************************
ss = 10; mcps = 10; mrpc = 1500; minss = 5; maxss = 20
Type; n; c mcmc mcmp mpmp mpmc
AB; 1000; 50 1108.65rps 1123.60rps 1104.97rps 1106.19rps
AB; 1000; 50 1123.60rps 1123.60rps 1101.32rps 1095.29rps
ss = 10; mcps = 10; mrpc = 1500; minss = 8; maxss = 6
Type; n; c mcmc mcmp mpmp mpmc
AB; 1000; 50 1116.07rps 1114.83rps 1097.69rps 1102.54rps
AB; 1000; 50 1121.08rps 1123.60rps 1108.65rps 1098.90rps
*****************************************************************
EXCERPT FROM /ETC/HTTPD/LOGS/ERROR_LOG
[Wed Jul 19 00:54:06 2000] [error] [client 192.168.0.2] (11)Resource
temporarily unavailable: couldn't spawn child process:
/home/httpd/cgi-bin/modperl.pl
[Wed Jul 19 01:16:18 2000] [notice] caught SIGTERM, shutting down
[Wed Jul 19 01:16:22 2000] [notice] Apache/1.3.12 (Unix) (Red
Hat/Linux) mod_perl/1.21 configured -- resuming normal operations
[Wed Jul 19 01:17:52 2000] [notice] caught SIGTERM, shutting down
[Wed Jul 19 01:18:00 2000] [notice] Apache/1.3.12 (Unix) (Red
Hat/Linux) mod_perl/1.21 configured -- resuming normal operations
[Wed Jul 19 01:18:50 2000] [error] [client 192.168.0.2] client denied by
server configuration: /home/httpd/cgi-bin/cgi_test.pl
