Hi Chris, I captured 3 threadumps with the below requests/second when the server is already slow. We were using BIO before and had observed slowness even with that. We switched to using NIO since it seemed a recommendation for production environment. -------------------------------------------------------------- *WITH NIO* *--------------------------------------------------------------* *RUN1 (threadDump1.out)* Requests/second = 18849.1606557377
*RUN2 **(threadDump2.out)* Requests/second = 18943.43606557377 *RUN3 **(threadDump3.out)* Requests/second = 18894.21241830065 -------------------------------------------------------------- The issue we are trying to address why does performance degrade by 50% with subsequent runs. Thanks, Dimple On Thu, Nov 5, 2015 at 1:31 AM, Christopher Schultz < ch...@christopherschultz.net> wrote: > Dimple, > > On 11/3/15 11:24 PM, dimple ranka wrote: > > Also forgot to mention that setting maxKeepAliveRequests to -1 did not > > help. As expected from the connector documentation the default value for > > this attribute is 100 and we have a 60 user test set up. > > > > On Wed, Nov 4, 2015 at 8:18 AM, dimple ranka <dimplekra...@gmail.com> > wrote: > > > >> Hi Mark, > >> > >> Another observation to be noted here is that system CPU usage shoots up > >> for subsequent runs, especially for later runs. > >> > >> We have been looking into this issue for couple of weeks now and it is > >> clear in the same environment with the same setup it doesn't reproduce > on > >> tomcat6. The moment we deploy the web application in a tomcat7 container > >> the slowness with subsequent runs shows up. > > Can you take some thread dumps to find out what Tomcat is doing? High > CPU usage and lower request throughput sounds like a Poller problem > since you are using NIO. > > -chris > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
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