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Re: [pcp] pcp updates - pmdamemcache qa & pmview man pages

To: Ken McDonell <kenj@xxxxxxxxxxxxxxxx>
Subject: Re: [pcp] pcp updates - pmdamemcache qa & pmview man pages
From: Nathan Scott <nathans@xxxxxxxxxx>
Date: Wed, 6 Aug 2014 20:52:27 -0400 (EDT)
Cc: pcp@xxxxxxxxxxx, Paul Colby <paul.colby@xxxxxxxxxxxxxxxxxxx>
Delivered-to: pcp@xxxxxxxxxxx
In-reply-to: <53E2CBA6.8070902@xxxxxxxxxxxxxxxx>
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Reply-to: Nathan Scott <nathans@xxxxxxxxxx>
Thread-index: Y2xa+dht0S8Rrh837u455dT6MNf95w==
Thread-topic: pcp updates - pmdamemcache qa & pmview man pages

----- Original Message -----
> On 07/08/14 09:43, Nathan Scott wrote:
> > Hi Ken,
> >
> > ----- Original Message -----
> >> Changes committed to git://git.performancecopilot.org/kenj/pcp.git dev
> >> [...]
> >>   qa/777                  |  139 ++++++
> >>   qa/777.out              |   38 +
> >
> > This looks alot like qa/835 I added recently ... probably we should merge
> > 'em into one?  I have noticed some occasional 835 flakiness where the
> > within_tolerance ranges are not met, so if yours is more robust in that
> > area, lets use it.  There's shared pmda install/remove scripting now that
> > 835 uses, which 777 is open-coding - so merging the two tests seems the
> > best approach?
> 
> Yep, sorry about that.  I was working off the old email exchange between
> you and Chandana and had not noticed that 835 had been created.
> 
> I'll merge 'em.  But a couple of questions ...
> 
> 1. should we use the perl probe (nothing extra to install) or nc(1) (may
> or may not be installed)?

Your perl implementation is fine by me.

> 2. I don't know enough about "slabs" for memcache to know if the stats
> from "stats slabs" and "stats items" are genuinely interesting ... the
> PMDA does not currently expose this AFAICT.

Yeah, not sure either - it looks interesting, but I was hoping Chandana
would be able to advise based on actual use in a real memcache environment.

thanks.

--
Nathan

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