To your last paragraph, you won't see any request itself "taking a lot of
memory". You can't get any insight into the memory used within a given
request. (Well, the CF Server Monitor tries to offer that, but many have
learned that turning on "Memory Tracking" there can be its own death knell
for a server.)

Instead, you may mean merely that you can see in the monitor graph what
memory is used by CF overall, but again I'll plead with you to read the blog
entry I pointed to (

http://www.carehart.org/blog/client/index.cfm/2010/11/3/when_memory_problems
_arent_what_they_seem_part_1) which discusses how that is often a myth
(concern over "high memory use"). 

More important, and to your very problem of feeling "blind" about what
happened some time ago, I discuss there how what really matters is what
errors appear in the [cf]\runtime\logs (or [jrun]\logs if on Multiserver, or
[cf]\logs\cfserver.log if on *nix.) That log can tell you if you are in fact
having a real memory problem, or if perhaps your problems may have some
other explanation. Trust me: all I do is help people solve CF server
problems, and there can be many, many different explanations, often ones
that you'd never dream of. 

 

/charlie

 

From: [email protected] [mailto:[email protected]] On Behalf Of Frank Moorman
Sent: Tuesday, February 01, 2011 1:19 PM
To: [email protected]
Subject: Re: [ACFUG Discuss] CF9 Performance

 

Thank you Charlie...  And Ajas and Chris...

We are on the same mental page. My whole reasoning for this thread is that I
am having random timeouts. (I know they are not really random ;-> ) I do
think they are related and I do not believe the page actually timing out is
the real problem. When it fails, I know which page failed, but I do not have
any tool to see what else was going on at the same time. I was looking to
see what tools are available that will give me more server information,
preferrably one that will tell me what was happening when the error
occurred, not 10 minutes later when I can actually look at a monitor.

I mentioned the CFDOCUMENT with the images, because I know it is a big
performance hit. I suspect (but currently have no proof) that the pages that
are failing are executing at the same time as the pdf creation process.
(Yes, I am using localurl) I also suspect it is the other pages timing out
instead of the actual pdf creation page, because I know I have increased the
default timeout individually on those pages in the past.  I do not want to
increase the global timeout default, because while that may help give the
other pages a few more seconds to finish what they are doing, it will not
fix the root cause and only (temporarily) mask the problem.

If/when (probably when) I install Fusion Reactor, I will try to see the
common theme with the multiple timeouts. If I see createInspectionForm.cfm
running at the same time in every case and taking a lot of memory, I will
definitely raise an eyebrow in that direction. However, if I see a long
running memory intensive sql at the same time, I will know where else to
look. Right now, I believe blind is an appropriate term, and I am only
guessing based on past experience.

Once again,
Thank you everyone...
Frank

 




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