RE: heap thrashing

2015-09-13 Thread Caldarale, Charles R
> From: Leo Donahue [mailto:donahu...@gmail.com] > Subject: Re: heap thrashing > "re-using objects" - do you mean declaring static variables or using thread > locals? Or something else? In an environment that uses thread pooling (e.g., Tomcat), any use of thread loca

RE: heap thrashing

2015-09-13 Thread Caldarale, Charles R
> From: Leo Donahue [mailto:donahu...@gmail.com] > Subject: Re: heap thrashing > Why does the jvm decide to collect garbage that fast as opposed to letting > it build and taking care of it later? Because your webapp has filled up one of the divisions of the heap. Read up on how t

Re: heap thrashing

2015-09-13 Thread Mark Thomas
On 13/09/2015 05:02, Leo Donahue wrote: > On Fri, Sep 11, 2015 at 11:27 AM, Mark Thomas wrote: > >> On 11/09/2015 15:43, Leo Donahue wrote: >>> On Fri, Sep 11, 2015 at 9:36 AM, Leo Donahue >> wrote: >> >> (typically by pooling and re-using objects rather than >> creating new ones for every requ

Re: heap thrashing

2015-09-12 Thread Leo Donahue
On Sat, Sep 12, 2015 at 7:49 AM, André Warnier (tomcat) wrote: > On 11.09.2015 18:24, Caldarale, Charles R wrote: > >> From: Leo Donahue [mailto:donahu...@gmail.com] >>> Subject: Re: heap thrashing >>> >> >> I see this topic come up from time to time

Re: heap thrashing

2015-09-12 Thread Leo Donahue
On Fri, Sep 11, 2015 at 11:27 AM, Mark Thomas wrote: > On 11/09/2015 15:43, Leo Donahue wrote: > > On Fri, Sep 11, 2015 at 9:36 AM, Leo Donahue > wrote: > > (typically by pooling and re-using objects rather than > creating new ones for every request) "re-using objects" - do you mean declaring

Re: heap thrashing

2015-09-12 Thread Leo Donahue
On Fri, Sep 11, 2015 at 11:24 AM, Caldarale, Charles R < chuck.caldar...@unisys.com> wrote: > > From: Leo Donahue [mailto:donahu...@gmail.com] > > Subject: Re: heap thrashing > > What you have appears to be just very rapid object creation and garbage > collection. &g

Re: heap thrashing

2015-09-12 Thread tomcat
On 11.09.2015 18:24, Caldarale, Charles R wrote: From: Leo Donahue [mailto:donahu...@gmail.com] Subject: Re: heap thrashing I see this topic come up from time to time on the list. Can someone point me to what heap thrashing looks like? Is heap thrashing a very "closely spaced"

Re: heap thrashing

2015-09-12 Thread tomcat
On 11.09.2015 16:43, Leo Donahue wrote: On Fri, Sep 11, 2015 at 9:36 AM, Leo Donahue wrote: Good day, I see this topic come up from time to time on the list. Can someone point me to what heap thrashing looks like? Googled java heap thrashing and looked at the images, but there isn't

Re: heap thrashing

2015-09-11 Thread Mark Thomas
On 11/09/2015 15:43, Leo Donahue wrote: > On Fri, Sep 11, 2015 at 9:36 AM, Leo Donahue wrote: > >> Good day, >> >> I see this topic come up from time to time on the list. Can someone point >> me to what heap thrashing looks like? >> >> Googled java he

RE: heap thrashing

2015-09-11 Thread Caldarale, Charles R
> From: Leo Donahue [mailto:donahu...@gmail.com] > Subject: Re: heap thrashing > I see this topic come up from time to time on the list. Can someone point > me to what heap thrashing looks like? > Is heap thrashing a very "closely spaced" saw tooth pattern? Should

RE: heap thrashing

2015-09-11 Thread Caldarale, Charles R
> From: Leo Donahue [mailto:donahu...@gmail.com] > Subject: Re: heap thrashing > > I see this topic come up from time to time on the list. Can someone point > > me to what heap thrashing looks like? > > Is heap thrashing a very "closely spaced" saw tooth patt

Re: heap thrashing

2015-09-11 Thread Leo Donahue
On Fri, Sep 11, 2015 at 9:36 AM, Leo Donahue wrote: > Good day, > > I see this topic come up from time to time on the list. Can someone point > me to what heap thrashing looks like? > > Googled java heap thrashing and looked at the images, but there isn't much > to

heap thrashing

2015-09-11 Thread Leo Donahue
Good day, I see this topic come up from time to time on the list. Can someone point me to what heap thrashing looks like? Googled java heap thrashing and looked at the images, but there isn't much to look at. I also tried googling for ventricular tachycardia to see if I could find a si