On 17/06/2010 08:59, Robinson, Eric wrote: >> If your heap size is right on the edge of your minimum for a Tomcat >> instance, you may be doing more GC work than is really needed. >> However, if you're satisfied with the response time and CPU >> utilization, you should be ok.
> Time to hit the vendor around the head with the cluebat. If > the app is happy with less heap space then increasing it > is only going to cause problems - mainly that GC when it > happens will take longer and trigger longer pauses. You > can mitigate this with GC config (later VMs may make the > right choices for you anyway) but all this is just adding > unecessary complexity. > Mark With 160 instances of tomcat on the server, and most of them happy with 64-96MB of RAM, could you take an educated guess at the negative impact on the server of raising the RAM to 512MB for each instance? How much extra CPU utilization do you think I could possibly see from all the extra GC? --Eric Disclaimer - June 19, 2010 This email and any files transmitted with it are confidential and intended solely for Tomcat Users List. If you are not the named addressee you should not disseminate, distribute, copy or alter this email. Any views or opinions presented in this email are solely those of the author and might not represent those of . Warning: Although has taken reasonable precautions to ensure no viruses are present in this email, the company cannot accept responsibility for any loss or damage arising from the use of this email or attachments. This disclaimer was added by Policy Patrol: http://www.policypatrol.com/ --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
