CMS very long pauses

I have posted this thread in the JVM forum please ignore it here

We are using JRE1.4._10 on Windows with large heaps

min=max=1400M

I posted this problem on the Hotspot forum by mistake so I am posting it again here(looks more relevant)

We are also using CMS in order to reduce pauses.

Two problems are experienced:

On startup we see a GC pause which takes more than an hour (it happens in one every four restarts)

On heavy load from time to time there are 2-3 minutes application pauses.

The memory is not depleted we have at least 200M free memory

(Young generation is 80MB)

Any ideas why it happen and how can it be solved.

Message was edited by:

haimy

[737 byte] By [haimya] at [2007-10-3 11:46:15]