Review request for 5049299 (original) (raw)

Andrew Haley aph at redhat.com
Fri May 29 08:54:48 UTC 2009

Florian Weimer wrote:

* Andrew Haley:

However, I think you don't want PROTNONE whan a system has been configured with mode 2: in that case, a user has a reasonable expectation that they can use all of the memory they allocated at VM startup. It makes more sense to allocate all the -Xms size immediately. -Xms? Or -Xmx?

-Xms as a minimum: the user has a entitlement to that. It's not unreasonable that later heap expansion might fail.

The latter leads to problems if the maximum heap size is relatively large. Currently, -Xmx is reserved, and some software fails to build on vm.overcommitmemory systems due to this.

I don't get it. Why would overcommit cause some software to fail to build? I can understand it failing if overcommit was turned off.

Andrew.

More information about the core-libs-dev mailing list