RE: Showing Tomcat Memory Utilization with 'top'

2010-06-23 Thread Caldarale, Charles R
> From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Subject: Re: Showing Tomcat Memory Utilization with 'top' > > I didn't realize that the server JVM didn't share class > templates. Do you have any ideas why not? AFAIK, Sun just hadn'

Re: Showing Tomcat Memory Utilization with 'top'

2010-06-23 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chuck, On 6/22/2010 5:00 PM, Caldarale, Charles R wrote: >> From: Christopher Schultz [mailto:ch...@christopherschultz.net] >> Subject: Re: Showing Tomcat Memory Utilization with 'top' >> >> Also, I believe VIRT

RE: Showing Tomcat Memory Utilization with 'top'

2010-06-22 Thread Caldarale, Charles R
> From: Robinson, Eric [mailto:eric.robin...@psmnv.com] > Subject: RE: Showing Tomcat Memory Utilization with 'top' > > 'top' shows 30-40MB in the 'SHR' column for each java > process. Is that what you're referring to? That could be any memory (

RE: Showing Tomcat Memory Utilization with 'top'

2010-06-22 Thread Caldarale, Charles R
> From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Subject: Re: Showing Tomcat Memory Utilization with 'top' > > Also, I believe VIRT includes memory shared with other processes Doesn't RES also include shared pages - anything that's in the memor

RE: Showing Tomcat Memory Utilization with 'top'

2010-06-22 Thread Robinson, Eric
> Also, I believe VIRT includes memory shared with other > processes, so if you have 50MiB of Java system classes > loaded and a modern JVM which shares them among running JVMs, > then you'll see that 50MiB included in every process's VIRT > that is sharing it, which is somewhat misleading. E

Re: Showing Tomcat Memory Utilization with 'top'

2010-06-22 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chuck, On 6/22/2010 3:22 PM, Caldarale, Charles R wrote: >> From: Robinson, Eric [mailto:eric.robin...@psmnv.com] >> Subject: Showing Tomcat Memory Utilization with 'top' >> >> 1. Top shows 0k of swap usage, so t

RE: Showing Tomcat Memory Utilization with 'top'

2010-06-22 Thread Caldarale, Charles R
> From: Robinson, Eric [mailto:eric.robin...@psmnv.com] > Subject: RE: Showing Tomcat Memory Utilization with 'top' > > For example, I have a tomcat configured to use 96MB of heap (export > JAVA_OPTS="-ms96M -mx96M"). Top shows VIRT=336396, RES=227264. I&#x

RE: Showing Tomcat Memory Utilization with 'top'

2010-06-22 Thread Robinson, Eric
>> 2. Where does the 64MB of java heap show up? > Buried inside the VIRT number. For example, I have a tomcat configured to use 96MB of heap (export JAVA_OPTS="-ms96M -mx96M"). Top shows VIRT=336396, RES=227264. I'm guessing that the 96MB of heap is buried in BOTH the VIRT and RES numbers? -- E

RE: Showing Tomcat Memory Utilization with 'top'

2010-06-22 Thread Caldarale, Charles R
> From: Robinson, Eric [mailto:eric.robin...@psmnv.com] > Subject: Showing Tomcat Memory Utilization with 'top' > > 1. Top shows 0k of swap usage, so the system is not swapping. In that > case, why is there a difference between the VIRT and RES numbers? Linux always all

Showing Tomcat Memory Utilization with 'top'

2010-06-22 Thread Robinson, Eric
In top, my java processes all show an average VIRT size of about 250MB and an average RES size of about 150MB. Most of them were started with a 64MB heap size. I have two questions: 1. Top shows 0k of swap usage, so the system is not swapping. In that case, why is there a difference between the VI