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Re: [pcp] URGENT potentially serious regression in 3.7.0

To: Ken McDonell <kenj@xxxxxxxxxxxxxxxx>
Subject: Re: [pcp] URGENT potentially serious regression in 3.7.0
From: Nathan Scott <nathans@xxxxxxxxxx>
Date: Tue, 2 Apr 2013 03:25:54 -0400 (EDT)
Cc: PCP Mailing List <pcp@xxxxxxxxxxx>
Delivered-to: pcp@xxxxxxxxxxx
In-reply-to: <515A7236.5080901@xxxxxxxxxxxxxxxx>
References: <513B99E4.7030007@xxxxxxxxxxxxxxxx> <513D9A93.6080806@xxxxxxxxxxxxxxxx> <515A7236.5080901@xxxxxxxxxxxxxxxx>
Reply-to: Nathan Scott <nathans@xxxxxxxxxx>
Thread-index: /ykjK1wcookNfFwBI3MrzCD6UG4SKg==
Thread-topic: URGENT potentially serious regression in 3.7.0

----- Original Message -----
> On 11/03/13 19:49, Ken McDonell wrote:
> > On 10/03/13 07:21, Ken McDonell wrote:
> >> I had suspected, without any proof that PCP QA was running much slower.
> >>
> >> ...
> > BUT if you change 169 so that the pmcd tracing is not buffered, i.e.
> > 
> > pmstore pmcd.control.tracenobuf 1
> > 
> > after pmcd is reconfigured, then the test passes 20 out of 20 attempts.
> 
> OK, I've spent many hours on this one and finally cracked it ... the core of
> the problem is this turdlet in the pmcd code ...
> ...
> The commit is coming soon (once I've rerun qa/169 on all my QA machines).
> 

Nice work - thanks Ken!!!

--
Nathan

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