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http://issues.apache.org/bugzilla/show_bug.cgi?id=37470 Summary: mod_jk doesn´t scale well with hundreds of sites - interferes with CGI handling Product: Tomcat 5 Version: Unknown Platform: PC OS/Version: Linux Status: NEW Severity: major Priority: P2 Component: Native:JK AssignedTo: tomcat-dev@jakarta.apache.org ReportedBy: [EMAIL PROTECTED] 1. Create a httpd.conf with 1500 websites. Every VirtualHost section should be like this: <VirtualHost xxxx> ServerName testXXX ServerAlias testXXX.com ServerAdmin [EMAIL PROTECTED] DocumentRoot /home/testXXX/public_html ScriptAlias /cgi-local/ /home/testXXX/public_html/cgi-local/ SetEnv LOG_SUBDIR testXXX SuexecUserGroup testXXX testXXX JkMount /*.jsp ajp13 JkMount /servlet/* ajp13 </VirtualHost> <VirtualHost xxxx:443> ServerName testXXX ServerAlias testXXX.com ServerAdmin [EMAIL PROTECTED] DocumentRoot /home/testXXX/public_html ScriptAlias /cgi-local/ /home/testXXX/public_html/cgi-local/ SetEnv LOG_SUBDIR testXXX SuexecUserGroup testXXX testXXX JkMount /*.jsp ajp13 JkMount /servlet/* ajp13 </VirtualHost> 2. create a simple script: #!/usr/bin/perl print "Content-Type: text/html\n\n"; print "Test!!"; 3. execute on the web Actual results: In a Dual Xeon, zero load, it takes 2 seconds to run. I did some straces: strace -T -f -p xxxxx [pid 30864] read(4, "", 4096) = 0 <0.000022> [pid 30864] close(4) = 0 <0.000016> [pid 30864] read(3, "", 4096) = 0 <0.000014> [pid 30864] close(3) = 0 <0.000012> [pid 30864] write(1, "Content-Type: text/html\n\nTest"..., 72) = 72 <0.000020> [pid 30785] <... poll resumed> [{fd=26, events=POLLIN, revents=POLLIN}, {fd=28, events=POLLIN}], 2, 30000) = 1 <2.120682> In "LogLevel debug", I see: [Fri Nov 11 12:55:50 2005] [25756:39072] [debug] jk_cleanup_shmem::mod_jk.c (1761): Shmem cleanup [Fri Nov 11 12:55:53 2005] [25756:39072] [debug] jk_cleanup_shmem::mod_jk.c (1761): Shmem cleanup (> 2 seconds !!) If I remove all the JkMount mapping, the CGI execution is very fast. So there is definitely an issue with mod_jk. with mod_jk -> more than 2 seconds without mod_jk -> a few milliseconds OBS: Those tests were done in a server without load. I simply turn apache 2.0.52 on and requested the CGI execution. I can test any patch. -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
