Re: Please help with Tomcat Garbage Collection

The data I posted was collected as Tomcat was restarted and for the next 19 hours. You see too much GC thrashing, are you saying the GC process finds too much G to clean up? Should I urge the developers to do some GC of their own? I give 2G to start with because it may not actually /need

Re: Please help with Tomcat Garbage Collection

-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 George, On 11/16/16 11:18 AM, George I. Develekos wrote: > On another installation with higher load, the JVM has "selected" > to give YoungGen 250MB or so (as opposed to 150M here), and I > have confirmed that Full-GC is much less frequent so

RE: Please help with Tomcat Garbage Collection

> -Original Message- > From: George I. Develekos [mailto:gdevele...@omilia.com] > Sent: Wednesday, November 16, 2016 10:18 AM > To: users@tomcat.apache.org > Subject: Re: Please help with Tomcat Garbage Collection > > I appreciate the detailed response. > &

Re: Please help with Tomcat Garbage Collection

I. Develekos [mailto:gdevele...@omilia.com] *Sent:* Wednesday, November 16, 2016 5:21 AM *To:* users@tomcat.apache.org *Subject:* Re: Please help with Tomcat Garbage Collection I'm attaching three screenshots of the GCViewer app as it processed the complete *gc.log* file (about 19 hours). Please have a loo

Re: Please help with Tomcat Garbage Collection

m:*George I. Develekos [mailto:gdevele...@omilia.com] *Sent:* Wednesday, November 16, 2016 5:21 AM *To:* users@tomcat.apache.org *Subject:* Re: Please help with Tomcat Garbage Collection I'm attaching three screenshots of the GCViewer app as it processed the complete *gc.log* file (about 19 hours)

RE: Please help with Tomcat Garbage Collection

/vmware/en/pdf/techpaper/enterprise-java-applications-on-vmware-best-practices-guide.pdf John From: George I. Develekos [mailto:gdevele...@omilia.com] Sent: Wednesday, November 16, 2016 5:21 AM To: users@tomcat.apache.org Subject: Re: Please help with Tomcat Garbage Collection I'm attaching three

Re: Please help with Tomcat Garbage Collection

On 15-Nov-16 11:45 PM, john.e.gr...@wellsfargo.com wrote: -Original Message- From: George I. Develekos [mailto:gdevele...@omilia.com] Sent: Tuesday, November 15, 2016 3:00 PM To: users@tomcat.apache.org Subject: Re: Please help with Tomcat Garbage Collection The system does very

RE: Please help with Tomcat Garbage Collection

> -Original Message- > From: George I. Develekos [mailto:gdevele...@omilia.com] > Sent: Tuesday, November 15, 2016 3:00 PM > To: users@tomcat.apache.org > Subject: Re: Please help with Tomcat Garbage Collection > > The system does very little swapping, both when

Re: Please help with Tomcat Garbage Collection

The system does very little swapping, both when it's GC'ing and when it's not. Less than 100MB worth of swap is taken. Giving Tomcat its own HW is not an option at this time, especially as there's no guarantee it'll solve the problem. Besides it would be a VM anyway, not physical dedicated

Re: Please help with Tomcat Garbage Collection

I would start with moving this tomcat to its own hw. Did you check swap? This long pauses could be because part of your heap is swapped to hdd Regards, Zdenek Henek On Tue, Nov 15, 2016, 21:37 George I. Develekos wrote: > > On 15-Nov-16 10:22 PM, Christopher Schultz

Re: Please help with Tomcat Garbage Collection

On 15-Nov-16 10:22 PM, Christopher Schultz wrote: George, On 11/15/16 10:46 AM, George I. Develekos wrote: Hello guys, We are having problems on a production system with very long "full GC" times, as long as1200sec real time (!!!). We are using Java 6 (stuck with CentOS 5.8 at this time)

Re: Please help with Tomcat Garbage Collection

-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 George, On 11/15/16 10:46 AM, George I. Develekos wrote: > Hello guys, > > We are having problems on a production system with very long "full > GC" times, as long as1200sec real time (!!!). > > We are using Java 6 (stuck with CentOS 5.8 at this

Re: Please help with Tomcat Garbage Collection

Is there running something else in that server? Real time should be never bigger than user+sys Z On Tue, Nov 15, 2016, 16:46 George I. Develekos wrote: > Hello guys, > > We are having problems on a production system with very long "full GC" > times, as long as1200sec

Re: Please help with Tomcat Garbage Collection

Thanks, but, all I got was this "y"... On 15-Nov-16 9:48 PM, pina.freder...@gmail.com wrote: y Sent from my HTC on T- . 4G LTE - Reply message - From: "George I. Develekos" <gdevele...@omilia.com> To: <users@tomcat.apache.org> Subject: Please hel

Re: Please help with Tomcat Garbage Collection

y Sent from my HTC on T- . 4G LTE - Reply message - From: "George I. Develekos" <gdevele...@omilia.com> To: <users@tomcat.apache.org> Subject: Please help with Tomcat Garbage Collection Date: Tue, Nov 15, 2016 10:46 AM Hello guys, We are having problems

Please help with Tomcat Garbage Collection

Hello guys, We are having problems on a production system with very long "full GC" times, as long as1200sec real time (!!!). We are using Java 6 (stuck with CentOS 5.8 at this time) and Tomcat 7.0.64. Xmx is 5G, Xms is 2G, and GC options are -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode