Oh yes, I forgot to mention this interesting point: if we test it by starting up the CF service again, and wait 30-45 minutes, the pids begin to accumulate again and the website hangs again ... even though there are no longer any .cfm pages on the website for users to hit. so just by running CF is making this happen. very strange.....
thanks again, Julie > Just some feedback on what we've seen to date: > > 1) the organization hosting our server put a detector of some sort to > test for denial of service attack, which came back indicating this was > not occurring. we had not seen unusual high numbers in access log for > a single page or a single IP either. > > 2) we set the "log slow pages" setting to ON and then checked back and > we did not have anything in server log saying "exceeding __ seconds" > even after changing it from default of 60 seconds to 30 seconds. > > 3) the site does not have a login > > 4) we ended up taking the .cfm pages off of the site temporarily and > leaving only the html pages, then stopping coldfusion and left it > stopped. the problem ceased. the pids remained at normal, did not > accumulate, and the site did not hang. this is not a solution since > we need those CF pages, but it seems to point to CF as the problem, as > opposed to apache. however, it could still be an issue with the way > CF and apache are interacting. > > at this point we are out of ideas other than to reinstall CF. > > Thanks, > Julie > > > > > Thank you both, Bernie and Mark, for the ideas. We are still > > investigating and will make use of your suggestions. > > Regards, > > Julie > > > > > > >Hi > > > > > >I'd also recommend getting a copy of Fusion Reactor > > >http://www.fusion-reactor.com > > > > > >This will enable you to monitor individual requests in Real time, > to > > see > > >which requests are hanging > > > > > >Regards > > >Mark > > > > > >Hi Julie, > > > > > >You might be experiencing a denial of service attack. Apache (at > > least for > > >v1.3x -- not sure about v2) will usually increase the number of > pids > > (up to > > >your "MaxClients" setting) as site traffic increases. > > >I've also seen this behavior with bad redirects (ex. Bad login > code > > that > > >ends up doing an infinite cflocation to "index.cfm"). > > > > > >Check your Apache access log to see if there's an unusually high > > number of > > >requests on a single page or multiple rapid fire requests from the > > > same IP > > >address. That might give you an idea of what's going on. > > > > > >Another possibility is you may have a number of requests that are > > just > > >taking too long to run, causing other threads to backup. You can > > enable the > > >"Log slow pages" setting in the CF administrator and check back > after > > you > > >experience the problem again to see if this is the case. > > > > > >Hope that helps... > > > > > >- Bernie > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Enterprise web applications, build robust, secure scalable apps today - Try it now ColdFusion Today ColdFusion 8 beta - Build next generation apps Archive: http://www.houseoffusion.com/groups/CF-Server/message.cfm/messageid:6481 Subscription: http://www.houseoffusion.com/groups/CF-Server/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.10
