On 10/23/15 12:52 PM, William Cohen wrote:
Earlier this month Rei Odeira found that the oprofile tool operf would
have problems attaching and monitoring a process that created many
very short-lived threads.  It looks like the kernel's perf tool also
has issues when attempting to attach and monitor a process that is
creating many short-lived threads.

known a problem. If this is the problem I think it is you will find that strace shows perf stuck walking /proc directory.

David

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