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Subject: Re: FR hidden gem: what is "CPU Thread Time", at bottom of *some*
 request detail pages
From: Darren Pywell <dapyw...@googlemail.com>
To: FusionReactor <fusionreactor@googlegroups.com>
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Hi Charlie,

FusionReactor 4 tracks the amount of time that a request has been on
the CPU on Java 1.5+ environments. In fact you don't have to go in the
request details to see it, it's made visible on the Request History
for example underneath the Time(ms) column. If you see two values in
the Time(ms) column on a request, the top value is the time that the
request was executing and the bottom value is the amount of that time
that the request was on the CPU. If you only see one value then the
time on the CPU was less than 1ms which is the smallest resolution
that we capture/display. This data is also sent to FusionAnalytics and
allows you to see which requests consume the most CPU (good for
identifying CPU bound pages and applications) - and you're right, this
needs updating in the documentation!

Thanks,
Darren


On Apr 13, 3:47=A0am, "charlie arehart" <charlie_li...@carehart.org>
wrote:
> Hey folks, I just found what seems a hidden gem in FR, but I don't quite
> understand it and can't find it documented. Hopefully one of the engineer=
s
> or someone else can explain it and perhaps when it became available, as w=
ell
> as when it does and does not appear in a request. I'd never noticed it un=
til
> today, and maybe this will help others too.
>
> I was helping someone and noticed on the Details page for a request of th=
eir
> that at the very bottom, in the "thread" section, above the "thread name"=
,
> that there was a "thread CPU time" with a count in ms. I'd never noticed
> that before, and I looked on my own server in a request and did not see i=
t.
> At first I thought it was that it was added in the 4.0.9 update that I'd =
not
> yet applied.
>
> But then suddenly I *did* see it in another request:
>
> At first I thought maybe it was related to requests that had CFTHREAD
> processing, but now I'm doubting that. I searched my codebase for files
> related to the page that was running and don't see any using CFTHREAD. So
> unless that's it and I simply missed it somehow in my search, can anyone =
say
> what that "thread cpu time" IS about. Again, it's not on all requests. An=
d I
> can confirm I (and the customer) do NOT have enabled (in request settings=
)
> the new FR 4 "cpu threading" feature.
>
> Any thoughts appreciated. Thanks.
>
> /charlie
>
> =A0image001.png