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Status Submitted
Workspace App Connect
Created by Guest
Created on May 21, 2024

Certify ACE for the use of jemalloc

To address memory issues in some of our ACE integration servers, we have been evaluating the use of an alternate memory allocator (jemalloc, from the Red Hat EPEL8 packages) instead of relying on the default one coming with our Red Hat Enterprise Linux 8 VMs (glibc allocator).

jemalloc is an open source memory allocator initially created to address (native) memory fragmentation issues in Mozilla Firefox. Its development has since been backed by Facebook and it is used in numerous products (freebsd, redis, to name a few). On top of its ability to reduce the memory fragmentation in long running processes, it is also capable of returning unused memory pages to the OS, which makes it particularly interesting in some of our workloads.



When running ACE with jemalloc, our experiments have demonstrated significant improvements in the memory utilization trend of some workloads, especially when coupled with MQSI_FREE_MASTER_PARSERS.

As we did not notice any technical issue/regression, we would like to request that the use of jemalloc with IBM ACE V12 be officially supported by IBM.

Idea priority High