Thanks, Hardy: This might help. We originally thought crawlers, but the weird thing is that the problem is also appearing on our test server which is fire-walled from the outside world and only available to on-campus IPs. So, everything was fine for a long time, and then this past weekend everything kind of went haywire (no code or config changes). I'm starting to lean toward our central IT group that manages our servers may have done infrastructure changes without telling us, but right now, I'm just grasping at straws.
In any case, thanks for letting me know about the "valves". I didn't know anything about them. George Kozak Cornell University On Mon, Nov 14, 2016 at 3:45 PM, Hardy Pottinger <[email protected]> wrote: > Would this help? > > https://tomcat.apache.org/tomcat-7.0-doc/config/valve. > html#Crawler_Session_Manager_Valve > > If you're experiencing an aggressive web spider, you can at least keep > them down to only using one session. > > --Hardy > > On Mon, Nov 14, 2016 at 2:13 PM, George Kozak <[email protected]> wrote: > >> Thanks, helix84: >> Yes, I switched things back to 100 for max connections. It looked like >> increasing the connections didn't really solve the problem. The odd thing >> is that everything was fine for a long time until this weekend. The amount >> of hits is heavy, but it isn't unusual. So, right now, I'm stumped. I did >> do the tomcat and postgres restarts, but it doesn't really help. >> George Kozak >> >> On Mon, Nov 14, 2016 at 11:52 AM, helix84 <[email protected]> wrote: >> >>> And by the way, increasing max connections may prolong the runtime >>> slightly, but is not ultimately a solution, the transactions will leak >>> nevertheless. 500 max connections is probably way too many for DSpace. I >>> would definitely not go higher than 100. >>> >>> >>> Regards, >>> ~~helix84 >>> >>> Compulsory reading: DSpace Mailing List Etiquette >>> https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette >>> >>> >> >> >> -- >> *************************** >> George Kozak >> Digital Library Specialist >> Cornell University Library - IT >> 218 Olin Library >> Cornell University >> Ithaca, NY 14853 >> 607-255-8924 >> [email protected] >> >> -- >> You received this message because you are subscribed to the Google Groups >> "DSpace Technical Support" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/dspace-tech. >> For more options, visit https://groups.google.com/d/optout. >> > > -- *************************** George Kozak Digital Library Specialist Cornell University Library - IT 218 Olin Library Cornell University Ithaca, NY 14853 607-255-8924 [email protected] -- You received this message because you are subscribed to the Google Groups "DSpace Technical Support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/dspace-tech. For more options, visit https://groups.google.com/d/optout.
