[HTCondor-users] Memory enforcement with cgroups v2 on EL9

[Tim Theisen <tim@xxxxxxxxxxx>]

The recent HTCondor 23.9.6 release has code to not count kernel cache 
memory in the jobs memory usage. This code was originally slated for the 
23.10 release. However, since sites are having difficulty on EL9 with 
jobs unexpectedly going over their memory limit, we back ported this 
code to 23.9 after the code freeze. Since this has not gone through our 
complete testing cycle, this code is disabled by default. We plan to 
have it enabled for the 23.10 release.

It you are running EL9 EPs and want to enable this code, set 
CGROUP_IGNORE_CACHE_MEMORY to TRUE. If you do so, please let us know how 
it goes. We do not expect any problems with this change.

...Tim

--
Tim Theisen (he, him, his)
Release Manager
HTCondor & Open Science Grid
Center for High Throughput Computing
Department of Computer Sciences
University of Wisconsin - Madison
4261 Computer Sciences and Statistics
1210 W Dayton St
Madison, WI 53706-1685
+1 608 265 5736