Eric W. Biederman created MESOS-758:
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Summary: Incorrect memory statistics are reported under linux
Key: MESOS-758
URL: https://issues.apache.org/jira/browse/MESOS-758
Project: Mesos
Issue Type: Bug
Affects Versions: 0.14.1, 0.14.0, 0.13.0, 0.12.0
Reporter: Eric W. Biederman
Under linux when using the cgroup_isolator only the number of non file backed
pages are reported in the memory rss. This excludes all text pages in the
binaries and all page cache pages. As a result of the incorrect reporting
users are very confused when they hit their memory limits when it appears they
are gigabytes away from them.
The correct number to report is from the file memory.usage_in_bytes.
It would also be nice to have:
memory.stat:total_rss -- This is the number of bytes that are not backed by
files.
memory.stat:total_cached -- This is the number of bytes that are backed by
files.
memory.stat:total_mapped -- This is the number of bytes backed by files that
are mmaped into processes.
memory.stat:rss that is currently reported is wrong in two dimensions.
- It does not include child cgroups
- It does not include any file backed pages, so it is strictly impossible to
run the job with the limit set to the number that is reported.
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