From: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com>
To: linux-numa@vger.kernel.org
Cc: ltp-list <ltp-list@lists.sourceforge.net>
Subject: numastats updates
Date: Thu, 03 Apr 2014 14:45:27 +0400 [thread overview]
Message-ID: <533D3BC7.8010309@oracle.com> (raw)
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.
next reply other threads:[~2014-04-03 10:45 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-03 10:45 Stanislav Kholmanskikh [this message]
2014-04-07 1:39 ` numastats updates Andi Kleen
2014-04-07 15:47 ` Christoph Lameter
2014-04-08 16:49 ` Stanislav Kholmanskikh
2014-04-08 16:57 ` Christoph Lameter
2014-04-08 16:58 ` Stanislav Kholmanskikh
2014-04-08 18:03 ` Christoph Lameter
2014-04-10 5:44 ` Stanislav Kholmanskikh
2014-04-11 1:48 ` Christoph Lameter
2014-04-11 2:12 ` Christoph Lameter
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