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That's exactly what I ended up doing (raised it to 60s), and it
reduced the database load quite a bit.

Thanks

On Mon, Oct 14, 2013 at 4:48 AM, Mark McClain
<mark.mcclain at dreamhost.com> wrote:
>
> On Oct 13, 2013, at 1:53 PM, Mina Nagy Zaki <mnzaki at gmail.com> wrote:
>
>> Hello list,
>> Neutron agents send a *lot* of heartbeat messages, and each of these
>> is written back to the central mysql database. Does neutron support
>> writing to memcached instead? (like nova does with service heartbeats)
>>
>
> Neutron does not currently support memcached.  I expect improving the agent framework is something we'll look at for Icehouse.
>
>
>> Also, any other advice on reducing MySQL load? I'm currently seeing
>> about 16 queries/sec
>
>
> One way to reduce the number of queries is to increase the "report_interval" in the agent configuration.  Changing this value to a large value does have some consequences, so you'll need to experiment to determine the best value for your deployment.
>
> mark



-- 
Mina Nagy Zaki