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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=9485 Sockets not being read when under load on MS ISA Firewall Summary: Sockets not being read when under load on MS ISA Firewall Product: Apache httpd-2.0 Version: 2.0.36 Platform: PC OS/Version: Windows NT/2K Status: NEW Severity: Normal Priority: Other Component: mpm_winnt AssignedTo: bugs@httpd.apache.org ReportedBy: [EMAIL PROTECTED] (As I posted to comp.infosystems.www.servers.ms-windows & microsoft.public.isaserver without any luck) I've been running Apache 1.3.2x on my ISA firewall, to "hide" several internal IIS webservers for about a year, very successfully. I accomplished this by placing Apache on my firewall, and setting an incoming protocol filter on port 80 in ISA Management, and then used mod_proxy to forward different virtual host requests to various internal IIS boxes. However, since Apache2's release I have been wanting to upgrade site (20-30k requests/day) to the new release. However all test runs of Apache 2 (on a different port) have shown it's performance to be miserable (despite all the official benchmarks around the internet). I have been trying to find out why, and have discovered that Apache2 is not closing it's sockets when a request is finished for some reason. This problem did not happen on Apache1. I verified this problem by telnetting to port 9001 and performing an HTTP get. If I do this to the internal Apache IP address, I get disconnected at the end of the request, however if I do this from "outside", the connection is not disconnected at the end of the request. It opens the sockets, and doesn't respond to the request, and stays in "Reading" mode, and once there are no threads left Apache2 stops responding. [It can stop responding before all threads are used by not opening the sockets.] I have saved an example mod_status page during the load test: http://www.freeasphost.co.uk/support/freeasphost.co.uk9001.html Sockets marked Reading stay open after the loadtesting is finished. Has anybody experienced this problem, or know of any reason why this should happen. I have tried forcing Apache to bind to a certain IP address, instead of "0.0.0.0". (ie not bound to a particular IP address) I have read that Apache 2 is now using a similar socket model to IIS. Could it be that it is socket pooling, and therefore gaining the same affliction as IIS has with ISA, described here: http://www.isaserver.org/shinder/tutorials/socket_pooling.htm Apache 2.0.36, downloaded MSI binaries My firewall is set up in exactly the same way as I use for Apache1 on port 80. Many thanks, and I would be greatly obliged if anyone could solve this problem Craig Macdonald craig{at}freeasphost.co.uk freeASPhost.co.uk Administrator --------------------------------------------- Load test results: (These are all hitting the same backend IIS box, just using different versions of Apache and mod_proxy) Running test 1 (apache 1.3.22/mod_perl-1.22) 12 fetches, 38 max parallel, 178896 bytes, in 10.0078 seconds 14908 mean bytes/connection 1.19907 fetches/sec, 17875.7 bytes/sec msecs/connect: 485.759 mean, 810.484 max, 99.456 min msecs/first-response: 739.271 mean, 1580.97 max, 237.383 min HTTP response codes: code 200 -- 12 Running test 2 (apache 2.0.36) 1 fetches, 49 max parallel, 14908 bytes, in 10.0048 seconds 14908 mean bytes/connection 0.0999519 fetches/sec, 1490.08 bytes/sec msecs/connect: 126.339 mean, 126.339 max, 126.339 min msecs/first-response: 189.68 mean, 189.68 max, 189.68 min HTTP response codes: code 200 -- 1 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
