On 8/15/24 12:40, Chuck Caldarale wrote:
On Aug 15, 2024, at 11:20, James H. H. Lampert
<jam...@touchtonecorp.com.INVALID> wrote:
In the wake of my recently switching a customer over from 8.5 to 9.0, a
question came up about another customer installation.
They are quite possibly the most heavily loaded customer installation we have
(and they also have a chronic problem with disk space).
They have a chronic problem with our webapp overloading and locking up, forcing
a Tomcat restart (and worse, when it's in this state, it takes a long time to
shut down). Nobody else has that problem.
Assuming that AS/400 uses some form of paging, is real memory also overloaded,
causing heavy swap file usage? Slow shutdown can happen due to having to page
in chunks of the process that aren’t used during normal running.
Is there a chance that going to 9.0 would help? Is there a chance that doing so
would make it worse?
Really not possible to say. I would expect the performance effects of changing
Tomcat versions would be rather small unless it’s noted in the changelog.
Updating the JVM might well have a larger impact, but that’s also not easy to
predict.
+1
I would say that if an issue in Tomcat is responsible for whatever is
happening in your environment, using Tomcat 9 is likely to get you into
a better position to upgrade to a fixed-version since Tomcat 8.5 reached
EOL a few months ago.
-chris
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