I just saw a thing that I've seen a few times before, and have heard anecdotally that others have too. The problem is that something hits the same URL over and over, eventually knocking over the server. I have some theories, but they're hard to test because this is a rare thing to happen, so I want to see if anyone else has seen something like this. It seems like some kind of search complete or similar running, however CircAutocompl is off. This is a 3.6 machine, though I think I've also seen it on 3.8. Haven't had anything higher running in prod long enough to tell. The log is below. I've reordered it to be when the request is issued rather than when it finishes to make it clearer, and added my speculation in. This is a real request by a human to view details. 172.20.2.200 - - [27/Sep/2013:13:29:01 +1200] "GET /cgi-bin/koha/members/moremember.pl?borrowernumber=16653 HTTP/1.1" 200 7202 This is some kind of automatic process that autocompletes, or something, that's going out of control. There's more of them, but you get the drift: 172.20.2.200 - - [27/Sep/2013:13:29:06 +1200] "POST /cgi-bin/koha/members/member.pl HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:07 +1200] "POST /cgi-bin/koha/members/member.pl HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:07 +1200] "POST /cgi-bin/koha/members/member.pl HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:07 +1200] "POST /cgi-bin/koha/members/member.pl HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:07 +1200] "POST /cgi-bin/koha/members/member.pl HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:07 +1200] "POST /cgi-bin/koha/members/member.pl HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:09 +1200] "POST /cgi-bin/koha/members/member.pl HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:07 +1200] "POST /cgi-bin/koha/members/member.pl HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:07 +1200] "POST /cgi-bin/koha/members/member.pl HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:09 +1200] "POST /cgi-bin/koha/members/member.pl HTTP/1.1" 504 270 I don't know what this is or what it's doing here: 172.20.2.200 - - [27/Sep/2013:13:29:11 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:18 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:10 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:12 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:10 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:13 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:11 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:11 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:12 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:13 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:12 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:17 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 172.20.2.200 - - [27/Sep/2013:13:29:16 +1200] "GET /cgi-bin/koha/circ/circulation.pl?borrowernumber=16653 HTTP/1.1" 504 270 It just keeps going like this until I stop apache, and when I start it up again, this doesn't immediately recur. My theory is that there's some javascript somewhere that just loses it and goes mad, but I don't know. Any ideas? This only comes up once every few months, but when it does, it can take the server down. -- Robin Sheat Catalyst IT Ltd. ✆ +64 4 803 2204 GPG: 5FA7 4B49 1E4D CAA4 4C38 8505 77F5 B724 F871 3BDF