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ceph.spec.in: increase the mem_per_job to 3GiB #41677

Merged
merged 2 commits into from
Jun 3, 2021
Merged

ceph.spec.in: increase the mem_per_job to 3GiB #41677

merged 2 commits into from
Jun 3, 2021

Commits on Jun 3, 2021

  1. ceph.spec.in: increase the mem_per_job to 3GiB 

    to lower the number of jobs, we are experiencing build failures on
a builder with 48c96t, 193 free mem. the failures were caused by
OOM killer which kills the c++ compiler

[498376.128969] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/system.slice/jenkins.service,task=cc1plus,pid=1387895,uid=1110
[498376.145288] Out of memory: Killed process 1387895 (cc1plus) total-vm:3323312kB, anon-rss:3164568kB, file-rss:0kB, shmem-rss:0kB, UID:1110
[498376.315185] oom_reaper: reaped process 1387895 (cc1plus), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
[498377.882072] cc1plus invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0

before this change, we use the total memory to calculate the number
of jobs, and assume that each job takes at most 2.5GiB mem. in the
case above, the # of job is 96.

after this change, we use the free memory, and increse the mem per job
to 3.0GiB. in the case above, the # of job would be 85.

Signed-off-by: Kefu Chai <kchai@redhat.com>
    @tchaikov
    tchaikov committed Jun 3, 2021
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  2. cmake: increase the MAX_{LINK,COMPILE}_MEM 

    based on recent observation, quite a few C++ source file take
around more than 3.0GiB to compile. for instance,
test_mock_HttpClient.cc could take up to 6270MiB memory to compile.

so increase MAX_{LINK,COMPILE}_MEM accordingly.

Signed-off-by: Kefu Chai <kchai@redhat.com>
    @tchaikov
    tchaikov committed Jun 3, 2021
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