Cris,
On 6/3/21 12:25, Berneburg, Cris J. - US wrote:
cb> StringBuilder - 264MB for the supporting byte array and 264MB for the
cb> returned String, about 790MB total for that piece of the pie.
cb> Contents were simply the JSON query results returned to the client.
cb> No mystery there.
Also,
Thanks Chris
[snip, snip, snippety-snip]
CS> What's the database? And the driver?
Oracle 19, oracle.jdbc.OracleDriver - jdbc:oracle:thin.
CS> MySQL Connector/J used to (still does?) read 100% of the results
CS> into the heap before Statement.executeQuery() returns unless you
CS> specifically
Cris,
On 6/1/21 09:17, Berneburg, Cris J. - US wrote:
Hi Chris
[lots of snippage]
cb> One of our web apps is using a "lot" of memory, specifically a big
cb> user query. We'd like to find out why.
cb> 1. Is there a way to analyze uncollected garbage?
cb> * AWS EC2 instance.
cb> * There are
Hi Chris
[lots of snippage]
cb> One of our web apps is using a "lot" of memory, specifically a big
cb> user query. We'd like to find out why.
cb> 1. Is there a way to analyze uncollected garbage?
cb> * AWS EC2 instance.
cb> * There are other TC instances on the same server.
cb> * Each TC
Hi Raghunath
cb> One of our web apps is using a "lot" of memory,
cb> specifically a big user query. We'd like to find out why.
cb> 1. Is there a way to analyze uncollected garbage?
rm> You could try using the Oracle utility - "jstat" - for analyzing
rm> the GC in an active Java process (PID)
Hi John :-)
cb> 1. Is there a way to analyze uncollected garbage?
cb> 2. Is that a reasonable way to identify potential memory usage problems?
jeg> MAT has an option to "Keep unreachable options." It's under preferences.
Thanks for the suggestion! I did not know about that option.
jeg> It
Hi Amit :-)
cb> 1. Is there a way to analyze uncollected garbage?
cb> 2. Is that a reasonable way to identify potential memory usage problems?
ap> Have you enabled the " Enable 'keep unreachable objects'" setting of MAT?
ap> https://blog.gceasy.io/2015/12/11/eclipse-mat-titbits/
No, I had not
ools/unix/jstat.html
-Original Message-
From: Berneburg, Cris J. - US
Sent: Thursday, May 27, 2021 1:24 PM
To: users@tomcat.apache.org
Subject: [OT] web app big memory usage?
Hi Folks :-)
One of our web apps is using a "lot" of memory, specifically a big user query.
We'd like to
Cris,
On 5/27/21 15:24, Berneburg, Cris J. - US wrote:
Hi Folks :-)
One of our web apps is using a "lot" of memory, specifically a big
user query. We'd like to find out why.
The Tomcat Web Application Manager Find leaks button said that "No
web applications appear to have triggered a memory
Cris,
> -Original Message-
> From: Berneburg, Cris J. - US
> Sent: Thursday, May 27, 2021 2:24 PM
> To: users@tomcat.apache.org
> Subject: [OT] web app big memory usage?
>
> Hi Folks :-)
>
> One of our web apps is using a "lot" of memory, speci
ERNAL] [OT] web app big memory usage?
Hi Folks :-)
One of our web apps is using a "lot" of memory, specifically a big user query.
We'd like to find out why.
The Tomcat Web Application Manager Find leaks button said that "No web
applications appear to have triggered a me
Hi Folks :-)
One of our web apps is using a "lot" of memory, specifically a big user query.
We'd like to find out why.
The Tomcat Web Application Manager Find leaks button said that "No web
applications appear to have triggered a memory leak on stop, reload or
undeploy."
Tomcat Manager
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