bad gateway 502 blunder apache mod_proxy tomcat


we're controlling web app tomcat 6 apache mod_proxy 2.2.3. observant lot 502 errors this:




bad gateway!
surrogate server viewed an unfair response an upstream server.



the surrogate server hoop ask /the/page.do.



reason: blunder reading remote server



if cruise server error, greatfully hit webmaster.



error 502




tomcat excess threads, it's thread-constrained. we're pulling 2400 users around jmeter opposing app. boxes sitting inside the firewall quick unloaded network, there shouldn't any network problems.



anyone have any suggestions things feeling during try? we're streamer tcpdump next.



update 10/21/08: still haven't figured out. observant wholly unequivocally little array underneath load. answers next haven't presumption any lively answers...yet. :)



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