{{Quickfixn}} ThreadedSocketAcceptor delay after period of inactivity - V1.6

Tue Aug 2 14:14:01 PDT 2016

We are using the pre-built dlls – we’ve tried V1.4 and V1.6 and see no difference. There is nothing interesting in the event logs.

We’ve added logging to compare the timestamp on the QF log, vs the moment that we get the FromApp() callback and see sizable gaps – this seems to only occur

1)      After a fresh restart of the subsystem – so we connect and heartbeat for hours

2)      The very first application message comes in and is not presented to our application for seconds

Subsequent messages do not have this behavior.
If activity stops for hours and then resumes the issue does not occur – it seems to have something to do with initial creation of the accepter and the first application message if that makes any sense.

Andrew Culross | Lead Technical Consultant | Broadridge FX & Liquidity Solutions
10 Bank Street | White Plains, NY 10606 | USA | p +1 914 288 8249
broadridge.com<http://www.broadridge.com/>

From: Quickfixn [mailto:quickfixn-bounces at lists.quickfixn.com] On Behalf Of Mike Gatny
Sent: Tuesday, August 02, 2016 12:07 PM
To: Mailing list for QuickFIX/n <quickfixn at lists.quickfixn.com>
Subject: Re: {{Quickfixn}} ThreadedSocketAcceptor delay after period of inactivity - V1.6

Andrew,

I haven't heard of this one before.  Are you using the pre-built qf/n DLL, or building yourself?  If building yourself, which .NET version are you using?  Anything interesting in the qf/n "event" log around the time that the first non-admin msg is received? Like maybe crossing a session boundary, or a logout/logon?

--
Mike Gatny
Connamara Systems, LLC

On Tue, Aug 2, 2016 at 9:34 AM, Culross, Andrew x38249 <Andrew.Culross at broadridge.com<mailto:Andrew.Culross at broadridge.com>> wrote:
Good morning everyone,

Has anyone experienced an issue where after a period of inactivity (several hours of just heartbeats) in which when the first application level message comes in there is a delay in the engine of many seconds before it is presented to the FromApp() method?

Thanks for any information !

Andrew Culross | Lead Technical Consultant | Broadridge FX & Liquidity Solutions
10 Bank Street | White Plains, NY 10606 | USA | p +1 914 288 8249<tel:%2B1%20914%20288%208249>
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