512 is alot of permenant memory, I would say it's more likely that
you'd be better off increasing the heap size if you're going to
increase anything. If you ahve 3 gigs on that machine and CF's the
only thing on it (I don't know if it is), there's no harm in
increasing it a little bit.
Having said that, I wouldn't just increase it willy nilly. Watch the
amount of RAM jrun consumes over time and see if it's much over 1024
when your server starts crashing. If it is, then you might try
pushing it up another 512. Another bit of advice I'd give would be to
set your initial heap and max heap to the same value. This prevents
frequent resizing of memory as it grows above the initial level of
512.
That heap contains all the memory consumed by all the objects in CF,
including session scope, application scope, server scope, and anything
your caching. It also contains all the files in the 2024 file
template cache. There's really no scientific way to measure how much
each of these is consuming, but you if you want to look deeper intot
he memory consumption of your CF server, you might want to take a peek
at the following blog post by Brandon Purcell:
http://www.bpurcell.org/blog/index.cfm?mode=entry&entry=967
Also, this is all assuming it's a memory problem, which it might not
be, but often is. I'd not toss out the possibility of it being a
memory problem lightly.
-Cameron
----- Original Message -----
From: Brook Davies <[EMAIL PROTECTED]>
Date: Wed, 14 Jul 2004 12:29:01 -0700
Subject: RE: CFMX is crashing daily with no hints in the log
To: CF-Talk <[EMAIL PROTECTED]>
I really don't think so, because the system is stable, fairly new and the
ram is 3 Kingston 1 gig sticks. I think bad RAM would manifest itself in
problems with other programs and the OS. I was thinking that it might be a
problem with fragmentation of the paging file. Dave Watts recommenced a
utility from sysinternals.com, pageDefrag, that will defrag the page file
on reboot, but I tried it on my dev server and it took for ever to reboot.
Since we only have once webserver I have held off doing it. If anybody out
there things its really worth while, I'll schedule some downtime with my
users - what do you think?
I just checked the task manager and jrun is at 700 megs. Through a product
called remoteltyanywhere, jrun shows this ram usage:
Handle count: 2220
Threads: 56
Page fault count: 1116122
Peak working set size: 735,196.00 KB
Working set size: 709,952.00 KB
Peak page file usage: 731,128.00 KB
Page file usage: 705,312.00 KB
Total memory usage: 1,415,264.00 KB
Is this normal?
Some other info about our server/site and memory usage:
---------------------------------------------------------
Minimum JVM Heap Size (MB): 512
Maximum JVM Heap Size (MB): 1024
MaxPermSize = 512m
I have cached queries at a max of 200.
Template cache at 2024 (likely using most of that - we have lots of cfm
files, lots of user generated cfm files..)
I store about 10 CFC's in the application scope and a fair bit (I don't
know how to quantify it?) of other textual data in the application scope.
Our site uses client vars, but I have not noticed any problems with that.
We use a couple of CFX tags - I guess its possible that these are eating
memory and eventually causing a crash, but how do you test this when there
is nothing in the logs...
We also use a couple of COM objects and I am suspect of one of them that
runs after a user sends an email campaign. Its the boogiepop COM object if
anyone is familiar with it, used to parse returned mail and determin the
bounce type. But again, I have no solid evidence to point the finger at it.
Cameron, do you think I think should increase the MaxPermSize ?
Brook
At 11:18 AM 7/14/2004, you wrote:
>hardware issue maybe? some bad memory or something? just a stab.
>
>
>Doug
>
>-----Original Message-----
>From: Brook Davies [mailto:[EMAIL PROTECTED]
>Sent: Wednesday, July 14, 2004 2:15 PM
>To: CF-Talk
>Subject: RE: CFMX is crashing daily with no hints in the log
>
>No, its a clean install...
>
>Brook
>
>At 02:55 AM 7/14/2004, you wrote:
> >Is the server in question an upgraded server from CF5?
> >
> >
> >
> > _____
> >
> >From: Micha Schopman [mailto:[EMAIL PROTECTED]
> >Sent: 14 July 2004 07:23
> >To: CF-Talk
> >Subject: RE: CFMX is crashing daily with no hints in the log
> >
> >But still, Macromedia needs to give this issue attention. Microsoft SQL
> >Server doesn't crash either when it does not have enough memory to do
> >it's job (it is even possible to run with 4MB ram). In fact I am a bit
> >astonished because since the first beta versions of ColdFusion, there
> >were problems keeping it stable under load, and still these issues
> >arise. These issues should never arise imo :-)
> >
> >Micha Schopman
> >Software Engineer
> >Modern Media, Databankweg 12 M, 3821 AL Amersfoort
> >Tel 033-4535377, Fax 033-4535388
> >KvK Amersfoort 39081679, Rabo 39.48.05.380
> >
> > _____
> >
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