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ColdFusion MX Still crashing after updater *pulling hair out*
Author: Jim Davis
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:22592#113949
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That's weird... Unfortunately (or perhaps fortunately) I'm still stuck
at CF 4.5 for my busy production sites so my suggestions may be wrong
for MX. As far as I know the same service/process/whatever that manages
the queue deals with monitoring the timeouts - so if the queue is still
loading then the service that timeouts out unresponsive threads should
be working too.
I'm sure you've already said it, but what DB driver are you using?
Native or ODBC Bridge?
> It also uses some of the CGI variables and verifies they are
> not null(or a zero length string) before using them...
> If I check the CGI variable Http_host several times.. is
> it going to
> cause DLLHOST to shoot up? Perhaps DLLHOST is providing
> that information
> to JRUN?..
I really doubt that... As far as I understand it IIS provides the CGI
variable set as part of it's "handoff" to JRUN. I doubt that JRUN
itself is calling anything at the system level for that - but IIS would
be (but I can't see this as being a problem - at the very least
HTTP_HOST HAS to be cached...)
> Is there any way that that request that is running behind the scenes..
> could be how CFMX stores a cached query? Just a thought..
I don't think it's as "formal" as a full request for Caching - however
the CF Scheduler definitely does run behind the scenes and consumes a
thread. Any tasks running?
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Well - that's definitely suspect at least... If you have a comparable
test server you might want to run some load tests to see if you can
replicate the problem with and without the CFFORM you were using.
My gut says that the whole CFFORM tag can't be a problem (or else we'd
have heard it from somebody else by now) but perhaps it and something
else or an oddity with the way the form was constructed?
In any case it's definitely worth checking out DLLHOST and see what it's
responsibilities to CFMX are (if any).
Sorry I haven't been much help.
Jim Davis
Author: Ezine
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:22592#113948
Thanks for your response Jim
LOL, I know.. definitely odd.. I appreciate you responding.
there are no CFX tags at all.. The only outside resource it uses is the
Database.
It also uses some of the CGI variables and verifies they are not null(or a
zero length string) before using them...
If I check the CGI variable Http_host several times.. is it going to
cause DLLHOST to shoot up? Perhaps DLLHOST is providing that information
to JRUN?..
Is there any way that that request that is running behind the scenes..
could be how CFMX stores a cached query? Just a thought..
Recent news:
I removed the CFFORM tag in one page on the application.. and I am now
relying on the ColdFusion isnumeric() function.. to test and make sure that
the value is numeric.
It seems to be running better.. It was definitely causing the NULL
Pointer JVM error.. I have since(removing it[cfform]).. not seen any
of the java.lang.NullPointer errors in the exception.log file.
That's good news at least.. and.. at least it is now stable..
Still.. DLLHOST shoots up.. now and then.. but it doesn't hold the
processor at 100% for several minutes like it did yesterday(causing the CF
overload). Perhaps the <CFFORM> tag has some problems?
Thanks again
-Zine
out*
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Are you calling any external objects? CF can only timeout a
thread/request that it has control over - if it's given control of the
thread to a another source (database, COM, CFX, etc) then it must wait
until that source returns control to it before it can time out the
thread.
That fact that CF isn't timing out leads me to believe that it not in
control (or that it's just plain toast - but since you say that JRUN is
still queueing requests it seems to be working).
Jim Davis
Author: Jim Davis
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:22592#113946
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Are you calling any external objects? CF can only timeout a
thread/request that it has control over - if it's given control of the
thread to a another source (database, COM, CFX, etc) then it must wait
until that source returns control to it before it can time out the
thread.
That fact that CF isn't timing out leads me to believe that it not in
control (or that it's just plain toast - but since you say that JRUN is
still queueing requests it seems to be working).
Jim Davis
Author: Adam Churvis
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:22592#113941
You mentioned that you applied Updater 2 yesterday. Have you tried the
newly-released Updater 3? We've found significant improvements across the
board -- especially with respect to stability and performance.
Also, your setup:
> There is at least 250MB of free physical ram...
> on a Win2K Server with 512MB of RAM
> Processor speed:800Mhz (single processor)
Isn't this too choked for a server running both SQL Server _and_ CFMX
Server? I ran a configuration similar to yours (with fast SCSI drives) back
in CF4.5 + SQL7 days, but CFMX really ought to have a lot more RAM available
to it.
Respectfully,
Adam Phillip Churvis
Member of Team Macromedia
Advanced Intensive ColdFusion MX Training
ColdFusion MX and SQL Server 2000 Class:
April 28, 2003 - May 2, 2003
http://www.ColdFusionTraining.com
> As much as I hate to mention things like this..
>
> In a previous e-mail I mentioned that I had an issue with Coldfusion MX
> crashing on a high hit site. At the time, Coldfusion MX was
un-patched..
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and
> frequently stays at 100% processor utilization(causing there not to be
> enough processing power and coldfusion to queue up the requests).
> Also, ColdFusion reports that it has no processes running during this
time.
> Also .. stopping and re-starting the CF application service doesn't get
> rid of the process that is running.. .. you have to stop and restart
IIS
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input
> stream read
>
> I sometimes get this error on my <cfmxroot>\logs\exception.log;
> "Error","jrpp-25494","03/13/03","15:46:20","i3replication_session","null
The
> specific sequence of files included or processed is:
> D:\Webs\FreeStoreClub\www\default.cfm "
> java.lang.NullPointerException
> at coldfusion.runtime.ClientScopeKey.hashCode(Unknown Source)
> at java.util.Hashtable.get(Unknown Source)
> at coldfusion.runtime.ClientScopeServiceImpl.GetClientScope(Unknown
Source)
>
> There is at least 250MB of free physical ram...
> on a Win2K Server with 512MB of RAM
> Processor speed:800Mhz (single processor)
> Running the Standard MS SQL JDBC drivers.. SQL Server is running
fine..
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so
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Author: Ezine
Short Link: http://www.houseoffusion.com/groups/cf-talk/thread.cfm/threadid:22592#113939
As much as I hate to mention things like this..
In a previous e-mail I mentioned that I had an issue with Coldfusion MX
crashing on a high hit site. At the time, Coldfusion MX was un-patched..
Yesterday I ran the ColdFusion MX Updater 2. and, is still crashing at
least three times a day.. if not more.
There is on average 200+ people on this server... with up to 5 requests
simultaneously running(most of the time.. it is 1-2).
We have ASP a few ASP scripts running on the same machine.
The issue is.. DLLHOST.exe will suddenly take up 100% of the processor
power and not leave anything for the jrun process.. then the Jrun
process queues up users.. until the DLLHOST.exe is finished processing..
or coldfusion gets 230+ queued requests.. then coldfusion quits
entirely. The service is still running after it quits.. .. but no
response from .cfm pages.. and the processor usage goes down to 1%.
It was suggested that there might be a runaway ASP process that is
executing..
I examined that possibility with iistracer.. and it is, indeed, a
coldfusion script that is running. (But.. it doesn't hang like this
through most of the requests.. just every so often.. with no
pattern)...
Coldfusion is set to time out all requests after 90000 milliseconds(90
seconds).. and yet.. iistracer is reporting scripts running for a
couple of hours.. during that time.. DLLHOST jumps around.. and
frequently stays at 100% processor utilization(causing there not to be
enough processing power and coldfusion to queue up the requests).
Also, ColdFusion reports that it has no processes running during this time.
Also .. stopping and re-starting the CF application service doesn't get
rid of the process that is running.. .. you have to stop and restart IIS
entirely to stop the process that seems to 'every so often' not end.
I get this error in my <cfmxroot>\runtime\logs\default-err.log;
03/21 23:18:23 error Connection reset by peer: JVM_recv in socket input
stream read
java.net.SocketException: Connection reset by peer: JVM_recv in socket input
stream read
I sometimes get this error on my <cfmxroot>\logs\exception.log;
"Error","jrpp-25494","03/13/03","15:46:20","i3replication_session","null The
specific sequence of files included or processed is:
D:\Webs\FreeStoreClub\www\default.cfm "
java.lang.NullPointerException
at coldfusion.runtime.ClientScopeKey.hashCode(Unknown Source)
at java.util.Hashtable.get(Unknown Source)
at coldfusion.runtime.ClientScopeServiceImpl.GetClientScope(Unknown Source)
There is at least 250MB of free physical ram...
on a Win2K Server with 512MB of RAM
Processor speed:800Mhz (single processor)
Running the Standard MS SQL JDBC drivers.. SQL Server is running fine..
no issues there.
At least a GB of free space on the WIN2K drive.. and at least 6 GB of
space on the CFMX drive.
Coldfusion performance monitor counters are enabled.
Client variables are stored in the database
1 processor = 5 processing pages maximum
JRE settings are set to default.
I don't use a single application/session variable in the application.. so
that rules CFLOCK out.
We are not using any COM objects.. so that rules COM Objects out..
I'm looking for a solution here.. any Ideas?
-Zine
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May 24, 2012
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