Re: Got a weird suggestion about a troublesome Tomcat

I have never used Tomcat on IBM i but have used it a lot on Windows.

It comes with a set of configuration files & startup scripts which tell each version on each machine how much memory to allocate, how many threads to start etc.
So it may not matter how much memory you allocate to the subsystem, if you haven't told Tomcat it can use it, it won't bother.

You'll have to do a bit of digging around to find where the 'root' directory of each Tomcat server is on your IFS, which will then lead you to those config files. Once you have found them, look at

https://www.ibm.com/developerworks/ibmi/library/i-run-asf-tomcat-on-ibmi/

to get an idea of the things you can tweak.

I'd suggest you compare & contrast the values in the 'fast' config against those in the 'slow' one to see what you might want to change

Alasdair

-----Original Message-----

date: Fri, 3 Feb 2017 14:44:14 +0000
from: "Tim Rowe" <timmr@xxxxxxxxxx>
subject: Re: Got a weird suggestion about a troublesome Tomcat

Did you check that all the DNS servers on the problem box are working
correctly. That can cause more performance issues that you can imagine.
Tim

Tim Rowe, [1]timmr@xxxxxxxxxx
Business Architect Application Development & Systems Management for IBM i
IBM i Development Lab, Rochester, MN
(507) 253-6191 (Tie) 553-6191

[2]http://www-03.ibm.com/systems/power/software/i/are/index.html


Target Group Registered in England & Wales No 01208137. Registered Office: Target House, Cowbridge Road East, Cardiff CF11 9AU.

CONFIDENTIALITY. This email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please do not disclose the contents to anyone, or take any action based on them, but notify the sender by return email and delete this email (and any attachments) from your system.

Messages sent to and from us may be monitored.

Internet communications cannot be guaranteed to be secure or error-free.
This e-mail and any attachments have been checked by virus detection software before transmission. You should carry out your own virus checks on the contents of this communication. We accept no liability for any loss or damage which may be caused by software viruses or by interception or interruption of this mail.

Any views or opinions presented are solely those of the author and do not necessarily represent those of the company. We do not accept any liability arising in any way from relying upon such views or opinions.

Calls may be recorded for training and security purposes.