Hello!
In LTP we have a test - numa01.sh
(https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/numa/numa01.sh)
In general, this script does something like:
* numastat > /tmp/before
* starts a binary with the specified numa memory policy using numactl
(or a like):
numactl --interleave=all get_some_memory_with_malloc_and_write_it
* `sleep` for few seconds
* numastat > /tmp/after
* compares /tmp/before and /tmp/after to check that the numa policy
was applied the right way
But the problem is that on a host with many NUMA nodes (8) the process
of updating that numastats statistics takes some time. Even 10 seconds
may be not enough. Therefore the test fails.
Is there a direct or indirect way to force the kernel to update the NUMA
statistics?
Thank you.
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