[ovs-dev] thundering herd wakeup of handler threads

Aaron Conole aconole at redhat.com
Wed Jan 8 16:18:18 UTC 2020

David Ahern <dsahern at gmail.com> writes:

> On 12/16/19 2:42 PM, Aaron Conole wrote:
>> Can you try the following and see if your scalability issue is
>> addressed?  I think it could be better integrated, but this is a
>> different quick 'n dirty.
> your patch reduces the number of threads awakened, but it is still
> really high - 43 out of 71 handler threads in one test.

Thanks for getting back to me (sorry for the late response, catching
up).  I'll take a closer look.  I haven't thought about adding
EPOLLEXCLUSIVE to the poll block change, so maybe that will address it
completely, or maybe there's a different approach.

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