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From Robert Coli <rc...@eventbrite.com>
Subject Re: does need to disable 'rpc_keepalive' if 'rpc_max_threads' is get larger?
Date Mon, 02 Mar 2015 19:15:18 GMT
On Sun, Mar 1, 2015 at 6:40 PM, pprun <pprun.dragon@gmail.com> wrote:

> rpc_max_threads is set to 2048 and the 'rpc_server_type' is 'hsha', after
> 2 days running, observed that there's a high I/O activity and the number of
> 'RCP thread' grow to '2048' and VisualVm shows most of them is
> 'waiting'/'sleeping' (color: yellow).
>
> I want to know if I set rpc_keepalive to false, disable it, this will help
> to shrink the idle rpc threads?
>
> I remembered java 8 comes with newWorkStealingPool: number of threads may
> grow and shrink dynamically.
>

What version of Cassandra, and hsha or sync? How many client threads do you
have?

=Rob

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