Mongodb in Docker: numactl --interleave = all explanations

Question

I am trying to create Dockerfilefor MongoDB in memory based on the official repo at https://hub.docker.com/_/mongo/ .

In dockerfile-entrypoint.shI came across:

numa='numactl --interleave=all'
if $numa true &> /dev/null; then
    set -- $numa "$@"
fi

This basically adds numactl --interleave=allto the original docker command when it numactlexists.

But I really do not understand this NUMA policy. Could you explain what NUMA means and what it means --interleave=all?

And why should we use it to instantiate MongoDB?

Answer 1

Link:

libnuma NUMA (Non Uniform Memory Access), Linux. NUMA , .

, issue 14 numa numa.

numa "" :

, , numactl, libnuma library, numactl script.

---

interleave=all , , cassandra ( ):

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. numactl, :

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, :

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, Intel Haswell-EP 10 - , NUMA.

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Answer 2

cassandra / mongodb numa ? QPI.