Memory requirements

Hi there,

I have been running into issues with Jchem web services (current version). I am running it on a 4GB 32-bit centos instance. I use the following settings:

Using CATALINA_OPTS:


 -Xms1536m


 -Xmx2g


 -XX:MaxPermSize=256m


 -XX:+UseParallelGC


 -XX:MaxGCPauseMillis=1500


 -XX:GCTimeRatio=9


 -server


 -XX:+DisableExplicitGC


 -Dspring.profiles.active=security-source-external,security-http-basic-marvin4js


 -Dsecurity.source.location=file:/home/tomcat/.chemaxon/spring-security-source.xml

The machine has nothing else running on it, other than apache proxying to tomcat.

This works pretty well until I need to insert a bunch of structures, some relatively large (1000 mw). Then the CPU on both cores spikes to 100% and the server stops responding to requests. The memory is pretty much tapped out.

I'm wondering if I need more memory? What are your recommendations exactly?

Thanks,

Craig

Hi Craig,

 Which method are you using for inserting structures? How many structures are there exactly? What is the format of the input? Can you send us a sample input for reproducing this?

Regards,
Peter 

plajko wrote:

Hi Craig,  Which method are you using for inserting structures? How many structures are there exactly? What is the format of the input? Can you send us a sample input for reproducing this? Regards, Peter

Shoot, sorry, I meant to get back to you about this earlier.

I updated to a newer version of webservices and it seems to be stable. I also added monit to reset tomcat if CPU Usage/memory goes out of control, but it hasn't happened yet.

Thanks,
Craig