One other gotcha to consider;
If when you installed the jrun connector you ticked 'turn on verbose
debugging'* the connector spends a significant time writing its log
file, which gets big very quickly. CF appears to be working fine, but
the page takes a long time to return to the browser.
*may not be the exact wording.
On 4/25/10, Andrew Myers <am2...@gmail.com> wrote:
> Fantasic Charlie, this sounds like it could make sense.
>
> I will check this out.
>
>
> Sent from my iPod
>
> On 25/04/2010, at 2:47 AM, "charlie arehart"
> <charlie_li...@carehart.org> wrote:
>
>> Here's still another thought, though I do agree Mr.B and Kai that
>> this could
>> reflect time spent pulling down and rendering the debugging info.
>>
>> I'll point out as well that it could instead be a problem with the
>> page not
>> executing immediately in CF. The debugging output shows the actual
>> time
>> spent executing once it gets to CF, not the time getting to and from
>> it.
>> While some may realize that would not include network time to and
>> from the
>> server, perhaps as important is that it also does NOT reflect the
>> time spent
>> *waiting* to execute in CF (queued) on the server.
>>
>> If ever there's a situation where all the simultaneous request
>> threads are
>> full or nearly full, then new requests may queue waiting to get a
>> chance to
>> run. Again, it's easy to miss that this time is NOT reflected in the
>> debugging output (nor is it tracked in the CF Server Monitor,
>> FusionReactor,
>> SeeFusion, etc.)
>>
>> Among the easiest ways to determine if that's happening (queuing) is
>> to
>> watch the CFSTAT command line output (available in [cf]\bin) or
>> getmetricdata("perf_monitor") or Windows PerfMon. Note that you do
>> need to
>> enable these (cfstat, perfmon) in the CF Admin, and also important:
>> NEITHER
>> is available for Multiserver deployments.
>>
>> For multiserver deployments (and indeed any CF deployment from CF 6
>> on) you
>> can also see queuing if you enable JRun metrics. Finally, a little
>> known tip
>> is that the CF 8/9 Enterprise Multiserver monitor shows queuing in its
>> "detail view", if you mouse over the "active requests" column, or
>> double-click on a monitored server to see it in the details shown at
>> the
>> bottom of the screen.
>>
>> To be clear, each of these can at least report how much queuing (if
>> any) is
>> happening. (Beware the "avgQ time" metric in CFSTAT and
>> getmetricdata/perfmon report the average of the last two completed
>> requests,
>> so not always useful.)
>>
>> HTH
>>
>> /charlie
>>
>>
>>> -----Original Message-----
>>> From: cfaussie@googlegroups.com [mailto:cfaus...@googlegroups.com] On
>>> Behalf Of Andrew
>>> Sent: Saturday, April 24, 2010 8:17 AM
>>> To: cfaussie
>>> Subject: [cfaussie] Performance Tuning Again
>>>
>>> Hi Folks,
>>>
>>> A quick question. If when I enabled debugging it is showing that a
>>> page is taking say 200ms but it's more like 4-5 seconds before the
>>> browser gets a response, does that point to a network issue? Or
>>> could
>>> there be something else CF related going on that the debugging view
>>> isn't showing?
>>>
>>> Many thanks,
>>> Andrew.
>>>
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