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[Bug 1110] excessive workload in pmdaroot for --container clients

To: pcp@xxxxxxxxxxx
Subject: [Bug 1110] excessive workload in pmdaroot for --container clients
From: bugzilla-daemon@xxxxxxxxxxx
Date: Thu, 30 Jun 2016 21:12:49 +0000
Auto-submitted: auto-generated
Delivered-to: pcp@xxxxxxxxxxx
In-reply-to: <bug-1110-835@xxxxxxxxxxxxxxxx/bugzilla/>
References: <bug-1110-835@xxxxxxxxxxxxxxxx/bugzilla/>

Comment # 2 on bug 1110 from
> The PMDAs need to ascertain whether the container is running at all,
> somehow, and whether it has restarted and is running with a different
> PID since last fetch. 

They could cache the PIDs, and send a   kill($pid,0)   to check for liveness. 
If worried about PID wraparund/reuse, throw away the cached PIDs periodically.


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