On 1/21/2010 8:37 PM, b...@bradwood.com wrote:
I've been use the Trigger Snapshot function from the ColdFusion Monitor
and I have been getting threads, but I am not, in my limited experience
reading threads, I can see anything. In fact every thread dump I have
done I have not seen a
On 1/20/2010 4:08 PM, b...@bradwood.com wrote:
I never got a clear answer from you on whether or not
you are seeing memory jumps (real ones, not the petabytes that the CF
server mon was showing you) or if your main problem was just CPU usage.
I don't know about a Jump yet, but when we
On 1/20/2010 3:15 PM, Dominic Watson wrote:
Something else to look at is jConsole. It comes with the Java SDK and will
let you look at any java app's memory, thread and cpu usage in detail
(you'll need to change jrun's JVM args to have it report those stats).
So if I am understanding
Are there in considerations to this because we are running ColdFusion in
a multi-home configuration? Is putting this argument in that one
configuration file going to effect all the JRun instances? Once each
one is restarted of course. We are using a default multi-home
configuration, we
On 1/21/2010 11:24 AM, Dave Watts wrote:
Yes, changing jvm.config will affect all instances by default. I
recommend that you configure the specific instance in question to use
a different jvm.config, which is very easy to do, and then just change
that jvm.config.
On 1/21/2010 11:00 AM, Ian Skinner wrote:
So if I am understanding your comment and the documentation I just need
to add this argument to the VM Arguments line in the jvm.config file in
our E:\JRun4\bin folder.
Well, I tried to add the JConsole hook to the JVM and I got the
following
Well, that is probably the better solution, but for my first experiment,
I just planned to restart one instance, so I presume only that instance
would get the new settings. At least until such a time as the whole
server was restarted or something.
Yes, that's correct.
Dave Watts, CTO, Fig
The difficult part of my job is that I administer the ColdFusion server, but
I am not allowed direct access to the server.
Yeah, those sort of setups suck because you can't just get in and do
what you need to.
The problem with a couple isolated readings of memory usage without a
reference
Questions like that hard to answer generically.
In general, you need to add some GC args to take a look at your garbage
collections and how often they are running as well as how much memory
you generally use. (jConsole will also be a good step) Chances are, if
your server has enough RAM and
Did anything change with the configuration of the server on January 5?
Java update, maybe?
Most of the time I've found that problems like this are related to
either a large data query that is hanging or timing out, and not
notifying the Coldfusion server. Or a program that has an infinite
loop
On 1/21/2010 2:56 PM, Maureen wrote:
Did anything change with the configuration of the server on January 5?
Java update, maybe?
Only one application update, and no mater what we do with that
application we can not trigger the condition.
Most of the time I've found that problems like
On 1/21/2010 2:41 PM, b...@bradwood.com wrote:
In general, you need to add some GC args to take a look at your garbage
collections and how often they are running as well as how much memory
you generally use. (jConsole will also be a good step)
An advice on what it takes to set up jConsole?
What are my options here? Is there an easier way to get to this thread
information?
JConsole is _not_ necessary to get a thread dump of your JVM. All you
need for that is the snapshot tab in ColdFusion's built-in server
monitor.
JConsole will help you track your memory usage.
If it were
I've been use the Trigger Snapshot function from the ColdFusion Monitor
and I have been getting threads, but I am not, in my limited experience
reading threads, I can see anything. In fact every thread dump I have
done I have not seen a single thread processing and cfm or cfc code
except
Ian,
Doing triage I always look at (in order).
1) client vars - are they stored in the registry? If so you could have an
issue deleting that that shows up as the purge process starts hitting
actual values to attempt to delete.
2) DB issues - Trouble on the DB spells trouble for the CF Server
First of all - having memory tracking enabled in your production server is
going to make it crawl ;o)
I would start with thread dumps. You can do this through the monitor (there
is a snapshot feature that I believe does this), although setting up a cron
job or similar to fire the Java
On 1/20/2010 1:57 PM, Mark Mandel wrote:
First of all - having memory tracking enabled in your production server is
going to make it crawl ;o)
Well, this is an Intranet web server that has a minimal load probably
measured in a dozen or two simultaneous requests at most. So while the
Is the jrun process specifically consuming the CPU usage, or is another
process using it? Is SQL Server or any thing else also running on this
box?
Also, how much memory does jrun usually use? What are you min and max
heap arguments? Windows may have 1 Gig allocated to jrun, but you may
only
On Thu, Jan 21, 2010 at 9:51 AM, Ian Skinner h...@ilsweb.com wrote:
First of all - having memory tracking enabled in your production server
is
going to make it crawl ;o)
Well, this is an Intranet web server that has a minimal load probably
measured in a dozen or two simultaneous
Something else to look at is jConsole. It comes with the Java SDK and will
let you look at any java app's memory, thread and cpu usage in detail
(you'll need to change jrun's JVM args to have it report those stats).
Something like SeeFusion will have some more ColdFusion specific stuff (long
On 1/20/2010 3:03 PM, b...@bradwood.com wrote:
Is the jrun process specifically consuming the CPU usage, or is another
process using it? Is SQL Server or any thing else also running on this
box?
Yes, looking at the task manager we clearly see one of the JRun services
spinning at 50%
+1 to Dominic
Very useful tool! and can be setup so you can access the server remotely -
it doesn't have to run on the same server.
Mark
On Thu, Jan 21, 2010 at 10:15 AM, Dominic Watson
watson.domi...@googlemail.com wrote:
Something else to look at is jConsole. It comes with the Java SDK
Yes, looking at the task manager we clearly see one of the JRun services
spinning at 50% (we have a 2 cpu server).
In that case, I would focus in on getting some stack traces of exactly
what your server is doing while experiencing these problems. That can
be done easily cfom the CF server
...@bradwood.com [mailto:b...@bradwood.com]
Sent: Wednesday, January 20, 2010 5:04 PM
To: cf-talk
Subject: RE: ColdFusion|JRun CPU and|or memory problem.
Is the jrun process specifically consuming the CPU usage, or is another
process using it? Is SQL Server or any thing else also running on this box
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