https://github.com/litecoin-project/litecoin/issues/67
0.8.2 apparently was the first Bitcoin version to support RPC keepalive.
 With the 4 RPC thread limit, four keepalive connections will exhaust all
four and prevent further connections.  This issue describes a workaround
where you build with more RPC threads.


On Mon, Sep 30, 2013 at 10:44 AM, slush <slush@centrum.cz> wrote:

> Hi,
>
> during several weeks I'm observing more and more frequent issues with
> bitcoind. The problem is that bitcoind stops responding to RPC calls, but
> there's no other suspicious activity in bitcoind log, CPU usage is low,
> disk I/O is standard etc.
>
> I observed this problem with version 0.8.2, but it is still happening with
> 0.8.5. Originally this happen just one or twice per day. Today my
> monitoring scripts restarted bitcoind more than 30x, which sounds alarming.
> This happen on various backends, so it isn't a problem of one specific
> node. Is there anybody else who's observing similar problem?
>
> Thanks,
> slush
>
>
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