Ahmed:
We have two indentical servers:
1x Opteron 246
2x 1GB corsair DDR 400
CF Config:
Version: 7,0,2,142559
multi-server mode
JVM:
Version: 1.4.2_09
Args:
java.args=-server -Dsun.io.useCanonCaches=false -Xms768m -Xmx768m
-XX:MaxPermSize=256m
-Xincgc -DJINTEGRA_NATIVE_MODE -DJINTEGRA_PREFETCH_ENUMS
-Dcoldfusion.rootDir={application.home}/
The application does use session variables heavily.
Trusted cache is not checked..as our application dynamically generates
pages..so the content changes a lot. Save class files is checked. Cache
webserver paths is checked.
Client variables are stored in the system's registry.
Thanks agian!
--
Michael Stowe
Network Administrator
Alcatraz Media, Inc.
(509) 232-0704
(888) 248-7211
http://www.alcatrazmedia.com/hosting
----- Original Message -----
From: "AHMED EL-RASHEEDY" <[EMAIL PROTECTED]>
To: "Dallas/Fort Worth ColdFusion User Group Mailing List"
<[EMAIL PROTECTED]>
Sent: Tuesday, October 31, 2006 9:11 PM
Subject: Re: [DFW CFUG] not the first time you've heard from me
Can you send your system configuration. Memory available (hardware)
and memory allocated to JVM.
Also do you cache queries?
How heavy does the application utilize session variables?
Do you have Trusted Cache enabled?
What JVM version are you using?
What CF version are you using? What configuration (single server,
multi-server)?
Ahmed El-Rasheedy.
On 10/30/06, Michael Stowe <[EMAIL PROTECTED]> wrote:
With the changes that were recommended, the usage still peaks at 100% Jrun
also seems to spin..using all CPU, and allocating and freeing memory. Any
other suggestions? Maybe a diffrent garbage collector?
Thanks!
--
Michael Stowe
Network Administrator
Alcatraz Media, Inc.
(509) 232-0704
(888) 248-7211
http://www.alcatrazmedia.com/hosting
----- Original Message -----
From: Michael Stowe
To: [EMAIL PROTECTED]
Sent: Thursday, October 26, 2006 10:55 AM
Subject: Re: [DFW CFUG] not the first time you've heard from me
This is our current ( Changed with suggestions given ) JVM args:
java.args=-server -Dsun.io.useCanonCaches=false -Xms768m -Xmx768m
-XX:MaxPermSize=256m -Xincgc -DJINTEGRA_NATIVE_MODE
-DJINTEGRA_PREFETCH_ENUMS
-Dcoldfusion.rootDir={application.home}/
--
So far no 100% usage..but I am seeing spikes now..of 50% or less that seem
to last a second or two. I assume this is the GC going on?
Thanks!
--
Michael Stowe
Network Administrator
Alcatraz Media, Inc.
(509) 232-0704
(888) 248-7211
http://www.alcatrazmedia.com/hosting
----- Original Message -----
From: AHMED EL-RASHEEDY
To: Dallas/Fort Worth ColdFusion User Group Mailing List
Sent: Wednesday, October 25, 2006 9:32 PM
Subject: Re: [DFW CFUG] not the first time you've heard from me
Try this
Go to your jvm.config file in \JRun4\bin\ in the multi-server install (it
may be under cfusionmx7 in the single instance.
Look for the java.args line and change the argument for the MaxPermSize
from
128m to 256m.as below
java.args=-server -Xmx512m -Dsun.io.useCanonCaches=false
-XX:MaxPermSize=256m...
Keep in mind that on a windows machine you are allowed to use 1500 MB in
combined memory for each JVM (Macromedia support say it is 1.8 GB but the
most it would allow CF to restart with is 1500MB).
So if you are allocating 1 GB to your JVM and take 256m out of it for the
MaxPermSize then you are left with whatever is left of the 1 GB.
As far as tools to monitor the JVM, there is a tool that monitors the JVM
which is a Java Util that I got from Macromedia support at my previous
job.
It allows you to see the memory allocation in the JVM. It was pretty neat
but required running the CF from console not as a Windows service. It is
not
available out there but I will see if I can get it somehow and post it to
the DFWCFUG.
Let us know if changing the MaxPermSize works.
Thanks,
Ahmed El-Rasheedy
On 10/25/06, Eric Knipp < [EMAIL PROTECTED]> wrote:
> Have you looked at increasing the maximum permanent generation size?
> This
helped a lot at my last job. Your problem could be directly related to
garbage collection.
>
>
>
> On 10/25/06, Michael Stowe < [EMAIL PROTECTED]> wrote:
> >
> >
> > Dave:
> >
> > The other issue that I was concerned about was the garbage collection.
The JVM is currently runing with a 768M heap. I had seen some tech notes
on
GC that can cause 100% cpu usage. I tried using the low pulse collector,
but
that didn't seem to help.
> >
> > To further elaborate on Kevin's information:
> >
> > We have two twin systems:
> >
> > 1x Opteron 246 2 GHz
> > 2GB RAM
> > Windows 2003 Server x64
> >
> > Jrun of course is running in 32bit mode. It is also running as a local
user for interaction with our SMB file server.
> >
> > We have the latest version of SeeFusion on both systems. What I have
observed is that the query times to the database are less than a second (
Fractions of ). Where we run into problems is CF rendering the results. We
start seeing 6+ second times after the query has executed.
> >
> > I have also been running a tool on our DB server called
> > mytop..basically
identical to the top command on Linux / UNIX systems. It allows for
per-thread montitoring of incoming queries.
> >
> > The types of queries are on average very short..but there are times
> > when
very large reports on data are ran. We also use a mixture of MyISIAM and
InnoDB tables. The rows in the InnoDB tables are very long. I'm wondering
if
this can be part of the issue too?
> >
> > Thanks agian!
> >
> > --
> > Michael Stowe
> > Network Administrator
> > Alcatraz Media, Inc.
> > (509) 232-0704
> > (888) 248-7211
> > http://www.alcatrazmedia.com/hosting
> >
> >
> > ----- Original Message -----
> > From: Dave Shuck
> > To: Dallas/Fort Worth ColdFusion User Group Mailing List
> > Sent: Wednesday, October 25, 2006 1:08 PM
> > Subject: Re: [DFW CFUG] not the first time you've heard from me
> >
> > Kevin, I felt the same way on my first pass of SeeFusion. However, we
enlisted their (Webapper) consulting services and after seeing how they
used
the tool, its value became apparent *very* fast. With SeeFusion you can
watch the threads come and go, and find long running or hanging requests.
They also have a wrapper that you can put around your jdbc:// path in your
DSNs that will log the database interaction and you can monitor all the
way
down to specific lines of code and queries that are breaking your stuff.
Believe me, I understand your plight. We had an application tailspin on
us
like this and the Webapper guys helped us nail it. I don't know what your
budget is like but if you can afford to contract them in on the
troubleshooting, I can almost guarantee you will feel it was money well
spent.
> >
> > ~Dave
> >
> >
> > On 10/25/06, Kevin <[EMAIL PROTECTED]> wrote:
> > >
> > >
> > >
> > >
> > > I am so tired of trying to find out the answer to these problems
> > > that
I'm about to look for a job flipping burgers.
> > >
> > >
> > >
> > > We continue to have 100% JRUN issues on our servers.
> > >
> > >
> > >
> > > We have windows 2003 64x servers – plenty of ram, etc.
> > >
> > > We have a Linux box running mySQL 5 – plenty of ram, etc.
> > >
> > >
> > >
> > >
> > >
> > > Our systems are all production systems. Everything is built on the
fly. Therefore I KNOW that there are some code issues and db issues. I
can't even begin to correct these issues because the servers keep maxing
out
the JRUN and crashing.
> > >
> > >
> > >
> > > Can anyone help? See fusion sux for some reason and has been no
> > > help.
Are there any tools out there that we can use to monitor traffic and
requests by cf and mySQL to help us identify where the problems are?
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Thank you for any help you can provide.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > kevin
> > > _______________________________________________
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> > >
> > >
> >
> >
> >
> > --
> > ~Dave Shuck
> > [EMAIL PROTECTED]
> > www.daveshuck.com
> >
> > Where's your Spot?
> > www.instantspot.com
> >
> > ________________________________
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