Re: JVM Heap Size
>> However, I do not have -Xms1g -Xmx1g in the JVM args. >> Do I need both? > > I'll defer to others since I never used to change settings via the admin... The CF admin provides separate fields for the min and max memory and will automatically include those values in the JVM arguments so there is no need to include them in the additional arguments list in the CF admin. -Justin ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:348131 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
On Wed, Oct 12, 2011 at 9:41 PM, John M Bliss wrote: > This may be a shot in the dark, but, does anyone on this list > have a resource/URL/etc illustrating average traceroute/ping times between > high-end Web hosting facilities and 'Net locations around the world? Run your own tests: http://www.traceroute.org/ Jochem -- Jochem van Dieten http://jochem.vandieten.net/ ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:348084 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
> we've also started a conversation with RackSpace netadmin types to determine whether there might be steps we could take to improve bandwidth. RackSpace ran some tests and provided us with some traceroute/ping times between our server and 'Net locations around the world. They claim that resulting times are within their expected thresholds. However, they seem slow to us. This may be a shot in the dark, but, does anyone on this list have a resource/URL/etc illustrating average traceroute/ping times between high-end Web hosting facilities and 'Net locations around the world? Basically, I need something authoritative I can use to prove/disprove RS' claim that times are "good enough." On Wed, Oct 5, 2011 at 7:16 PM, John M Bliss wrote: > True...but issue at hand is, literally, one high-traffic page that takes a > url variable, uses it to look up a row in the DB, and returns a tiny bit of > HTML. That's it. Not a whole lot of room for improvement there. > > As an aside/follow-up, further research did result in an interesting > finding: > > We use pingdom.com to test said page once per minute from servers all > around the world. Average response time (end-to-end) is approximately 260 > ms. I was tasked with reducing that number. > > We purchased and installed FusionReactor and one of the many things it > illuminated today was: average *server* time (elapsed milliseconds from when > CF first "hears" request until CF has passed HTML back to IIS) is about > 20-30 ms! > > So, while it's useful for me to screw with JVM, etc to reduce that average > (and, more importantly, to make sure that we don't have "spikes" where page > consumes lots more server time), we've also started a conversation with > RackSpace netadmin types to determine whether there might be steps we could > take to improve bandwidth. > > Thanks for all of your help! > > > On Wed, Oct 5, 2011 at 4:21 PM, Maureen Barger wrote: > >> >> There's also tons of profilers out there for the Sun JVM. Rather than >> throw >> spaghetti at the wall and see what sticks, install one and watch your >> app(s) >> for a while. Perhaps your RMI interval could be longer, GC method be >> different, heap size smaller or larger etc. >> And on the other side of the coin, if you are concerned with efficiency, >> code can almost always be improved too. You can have the fastest Ferrari >> in >> the world but if the driver doesn't know how to drive stick, the ride is >> going to suck. >> Good luck! >> >> On Wed, Oct 5, 2011 at 17:02, Dave Watts wrote: >> >> > >> > > Nothing in server.log available in CFAdmin. Just the successful start >> > info >> > > from after I reverted the JVM version. Am I missing something? >> > >> > The log you're interested in is one of the JRun logs file >> > (cfusion-out.log or cfusion-event.log, I forget which.). I'm not sure >> > where that's located if you're using the standalone install of CF, but >> > on multiserver, it's something like: >> > >> > c:\jrun4\logs\ >> > >> > or >> > >> > /opt/jrun4/logs >> > >> > Alternatively, you might try running CF as an application rather than >> > a service, which will pipe startup errors to your command prompt or >> > terminal window. >> > >> > Dave Watts, CTO, Fig Leaf Software >> > http://www.figleaf.com/ >> > http://training.figleaf.com/ >> > >> > Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on >> > GSA Schedule, and provides the highest caliber vendor-authorized >> > instruction at our training centers, online, or onsite. >> > >> > >> >> ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:348071 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
On Fri, Oct 7, 2011 at 3:35 AM, John M Bliss wrote: > In CFAdmin > Server Settings > Java and JVM, I have minimum and maximum JVM > heap size form fields set to 1024 MB. > > However, I do not have -Xms1g -Xmx1g in the JVM args. > > Do I need both? I'll defer to others since I never used to change settings via the admin... -- Sean A Corfield -- (904) 302-SEAN An Architect's View -- http://corfield.org/ World Singles, LLC. -- http://worldsingles.com/ Railo Technologies, Inc. -- http://www.getrailo.com/ "Perfection is the enemy of the good." -- Gustave Flaubert, French realist novelist (1821-1880) ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:348052 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
In CFAdmin > Server Settings > Java and JVM, I have minimum and maximum JVM heap size form fields set to 1024 MB. However, I do not have -Xms1g -Xmx1g in the JVM args. Do I need both? On Fri, Oct 7, 2011 at 2:30 AM, Sean Corfield wrote: > > On Thu, Oct 6, 2011 at 4:15 AM, John M Bliss wrote: > >> So you have -Xms1g -Xmx1g yes? (I ask because you don't show this below) > > No. Should I add those? > > Well, you said that you had min/max heap set to 1024MB so I was just > confirming that you had those options in your JVM arguments because > you didn't mention them. > > Maybe I should ask "How are you setting the JVM arguments?" > > >> On Wed, Oct 5, 2011 at 6:25 AM, John M Bliss > wrote: > >> > Based on some JVM tuning advice I Googled a while back, I have (on ACF > 8) > >> > minimum and maximum JVM heap size set to 1024 MB. > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347995 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
On Thu, Oct 6, 2011 at 4:15 AM, John M Bliss wrote: >> So you have -Xms1g -Xmx1g yes? (I ask because you don't show this below) > No. Should I add those? Well, you said that you had min/max heap set to 1024MB so I was just confirming that you had those options in your JVM arguments because you didn't mention them. Maybe I should ask "How are you setting the JVM arguments?" >> On Wed, Oct 5, 2011 at 6:25 AM, John M Bliss wrote: >> > Based on some JVM tuning advice I Googled a while back, I have (on ACF 8) >> > minimum and maximum JVM heap size set to 1024 MB. ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347994 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
Did you install the regular Java JVM or the JDK? You'll need the JDK. HTH, Carl On 10/5/2011 8:36 AM, John M Bliss wrote: >> Are you experiencing any problems with the current behaviour? > We're just tuning stuff to get the fastest possible responses from our app. > > Related: I just tried to upgrade to Java version 1.6.0_27 but CF failed to > start after I did so. Know what the max Java version 1.6.0_* usable with ACF > 8 is? > > > On Wed, Oct 5, 2011 at 10:24 AM, Jochem van Dietenwrote: > >> On Wed, Oct 5, 2011 at 6:25 AM, John M Bliss wrote: >>> Regularly, CF briefly consumes all but about 50 MB of max heap size. >> Isn't that what is supposed to happen? The JVM uses memory until it >> runs out which starts the garbage collector. >> >> Are you experiencing any problems with the current behaviour? >> >> Jochem >> >> -- >> Jochem van Dieten >> http://jochem.vandieten.net/ >> >> > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347992 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
I've configured several production servers ColdFusion 8.0.1 servers with JDK 1.6.0_27 without issue. Make sure the JDK version is installed. Wil Genovese Sr. Web Application Developer/ Systems Administrator CF Webtools www.cfwebtools.com wilg...@trunkful.com www.trunkful.com On Oct 6, 2011, at 10:18 AM, Pete Freitag wrote: > > On Wed, Oct 5, 2011 at 11:36 AM, John M Bliss wrote: > >> Related: I just tried to upgrade to Java version 1.6.0_27 but CF failed to >> start after I did so. Know what the max Java version 1.6.0_* usable with >> ACF >> 8 is? >> > > The latest version of the JVM that Adobe has certified and supports for > ColdFusion 8 (and CF9 for that matter) is 1.6.0_24 (see: > http://kb2.adobe.com/cps/894/cpsid_89440.html), but more current versions > should still work fine generally speaking. The error you experienced may > just have been due to a file path typo, or something like that. > > In case you are not aware versions less than 1.6.0_24 have a DOS > vulnerability that is fairly easy to exploit, so you will want to make sure > you have upgraded your JVM to at least 1.6.0_24. > > -- > Pete Freitag - Adobe Community Professional > http://foundeo.com/ - ColdFusion Consulting & Products > http://petefreitag.com/ - My Blog > http://hackmycf.com - Is your ColdFusion Server Secure? > > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347983 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
On Wed, Oct 5, 2011 at 11:36 AM, John M Bliss wrote: > Related: I just tried to upgrade to Java version 1.6.0_27 but CF failed to > start after I did so. Know what the max Java version 1.6.0_* usable with > ACF > 8 is? > The latest version of the JVM that Adobe has certified and supports for ColdFusion 8 (and CF9 for that matter) is 1.6.0_24 (see: http://kb2.adobe.com/cps/894/cpsid_89440.html), but more current versions should still work fine generally speaking. The error you experienced may just have been due to a file path typo, or something like that. In case you are not aware versions less than 1.6.0_24 have a DOS vulnerability that is fairly easy to exploit, so you will want to make sure you have upgraded your JVM to at least 1.6.0_24. -- Pete Freitag - Adobe Community Professional http://foundeo.com/ - ColdFusion Consulting & Products http://petefreitag.com/ - My Blog http://hackmycf.com - Is your ColdFusion Server Secure? ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347982 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
> So you have -Xms1g -Xmx1g yes? (I ask because you don't show this below)
No. Should I add those?
On Thu, Oct 6, 2011 at 1:12 AM, Sean Corfield wrote:
>
> On Wed, Oct 5, 2011 at 6:25 AM, John M Bliss wrote:
> > Based on some JVM tuning advice I Googled a while back, I have (on ACF 8)
> > minimum and maximum JVM heap size set to 1024 MB.
>
> So you have -Xms1g -Xmx1g yes? (I ask because you don't show this below)
>
> > -server -XX:MaxPermSize=192m -XX:PermSize=192m -XX:+UseParallelGC
> > -Dsun.rmi.dgc.client.gcInterval=60
> > -Dsun.rmi.dgc.server.gcInterval=60
> > -Dcoldfusion.rootDir={application.home}/../
> > -Dcoldfusion.libPath={application.home}/../lib
>
> Nice to see you've resisted the urge to set RMI interval to 360
> which is a common recommendation out there.
>
> You might try -XX:+UseConcMarkSweepGC instead of -XX:+UseParallelGC to
> get more even throughput.
>
> Also worth adding -XX:+ExplicitGCInvokesConc (so System.gc() uses CMS
> as well instead of the stop the world GC).
>
> Turn on verbose GC logging as well:
>
> -verbose:gc
> -XX:+PrintGCTimeStamps
> -XX:+PrintGCDetails
>
> This will allow you to see what's really going on.
>
> > Regularly, CF briefly consumes all but about 50 MB of max heap size.
>
> Yup, that's how Java works. The GC kicks in when the JVM is close to
> being out of memory.
>
> FWIW, I've been going thru a lot of JVM tuning the last few weeks :)
>
> Useful tools to analyze memory usage:
> * jmap to get a heap dump
> * jhat to do basic analysis
> * Eclipse MAT (loving this!)
> --
> Sean A Corfield -- (904) 302-SEAN
> An Architect's View -- http://corfield.org/
> World Singles, LLC. -- http://worldsingles.com/
> Railo Technologies, Inc. -- http://www.getrailo.com/
>
> "Perfection is the enemy of the good."
> -- Gustave Flaubert, French realist novelist (1821-1880)
>
>
~|
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Re: JVM Heap Size
On Wed, Oct 5, 2011 at 6:25 AM, John M Bliss wrote:
> Based on some JVM tuning advice I Googled a while back, I have (on ACF 8)
> minimum and maximum JVM heap size set to 1024 MB.
So you have -Xms1g -Xmx1g yes? (I ask because you don't show this below)
> -server -XX:MaxPermSize=192m -XX:PermSize=192m -XX:+UseParallelGC
> -Dsun.rmi.dgc.client.gcInterval=60
> -Dsun.rmi.dgc.server.gcInterval=60
> -Dcoldfusion.rootDir={application.home}/../
> -Dcoldfusion.libPath={application.home}/../lib
Nice to see you've resisted the urge to set RMI interval to 360
which is a common recommendation out there.
You might try -XX:+UseConcMarkSweepGC instead of -XX:+UseParallelGC to
get more even throughput.
Also worth adding -XX:+ExplicitGCInvokesConc (so System.gc() uses CMS
as well instead of the stop the world GC).
Turn on verbose GC logging as well:
-verbose:gc
-XX:+PrintGCTimeStamps
-XX:+PrintGCDetails
This will allow you to see what's really going on.
> Regularly, CF briefly consumes all but about 50 MB of max heap size.
Yup, that's how Java works. The GC kicks in when the JVM is close to
being out of memory.
FWIW, I've been going thru a lot of JVM tuning the last few weeks :)
Useful tools to analyze memory usage:
* jmap to get a heap dump
* jhat to do basic analysis
* Eclipse MAT (loving this!)
--
Sean A Corfield -- (904) 302-SEAN
An Architect's View -- http://corfield.org/
World Singles, LLC. -- http://worldsingles.com/
Railo Technologies, Inc. -- http://www.getrailo.com/
"Perfection is the enemy of the good."
-- Gustave Flaubert, French realist novelist (1821-1880)
~|
Order the Adobe Coldfusion Anthology now!
http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion
Archive:
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Re: JVM Heap Size
True...but issue at hand is, literally, one high-traffic page that takes a url variable, uses it to look up a row in the DB, and returns a tiny bit of HTML. That's it. Not a whole lot of room for improvement there. As an aside/follow-up, further research did result in an interesting finding: We use pingdom.com to test said page once per minute from servers all around the world. Average response time (end-to-end) is approximately 260 ms. I was tasked with reducing that number. We purchased and installed FusionReactor and one of the many things it illuminated today was: average *server* time (elapsed milliseconds from when CF first "hears" request until CF has passed HTML back to IIS) is about 20-30 ms! So, while it's useful for me to screw with JVM, etc to reduce that average (and, more importantly, to make sure that we don't have "spikes" where page consumes lots more server time), we've also started a conversation with RackSpace netadmin types to determine whether there might be steps we could take to improve bandwidth. Thanks for all of your help! On Wed, Oct 5, 2011 at 4:21 PM, Maureen Barger wrote: > > There's also tons of profilers out there for the Sun JVM. Rather than throw > spaghetti at the wall and see what sticks, install one and watch your > app(s) > for a while. Perhaps your RMI interval could be longer, GC method be > different, heap size smaller or larger etc. > And on the other side of the coin, if you are concerned with efficiency, > code can almost always be improved too. You can have the fastest Ferrari in > the world but if the driver doesn't know how to drive stick, the ride is > going to suck. > Good luck! > > On Wed, Oct 5, 2011 at 17:02, Dave Watts wrote: > > > > > > Nothing in server.log available in CFAdmin. Just the successful start > > info > > > from after I reverted the JVM version. Am I missing something? > > > > The log you're interested in is one of the JRun logs file > > (cfusion-out.log or cfusion-event.log, I forget which.). I'm not sure > > where that's located if you're using the standalone install of CF, but > > on multiserver, it's something like: > > > > c:\jrun4\logs\ > > > > or > > > > /opt/jrun4/logs > > > > Alternatively, you might try running CF as an application rather than > > a service, which will pipe startup errors to your command prompt or > > terminal window. > > > > Dave Watts, CTO, Fig Leaf Software > > http://www.figleaf.com/ > > http://training.figleaf.com/ > > > > Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on > > GSA Schedule, and provides the highest caliber vendor-authorized > > instruction at our training centers, online, or onsite. > > > > > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347965 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
On Oct 5, 2011 8:37 AM, "John M Bliss" wrote: > We're just tuning stuff to get the fastest possible responses from our app. And isn't that goal best served by letting the JVM consume all available memory instead f running the garbage collector all the time? (If you answer "no" please include your exact definition of "fastest possible responses".) Jochem -- Jochem van Dieten http://jochem.vandieten.net/ ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347957 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
There's also tons of profilers out there for the Sun JVM. Rather than throw spaghetti at the wall and see what sticks, install one and watch your app(s) for a while. Perhaps your RMI interval could be longer, GC method be different, heap size smaller or larger etc. And on the other side of the coin, if you are concerned with efficiency, code can almost always be improved too. You can have the fastest Ferrari in the world but if the driver doesn't know how to drive stick, the ride is going to suck. Good luck! On Wed, Oct 5, 2011 at 17:02, Dave Watts wrote: > > > Nothing in server.log available in CFAdmin. Just the successful start > info > > from after I reverted the JVM version. Am I missing something? > > The log you're interested in is one of the JRun logs file > (cfusion-out.log or cfusion-event.log, I forget which.). I'm not sure > where that's located if you're using the standalone install of CF, but > on multiserver, it's something like: > > c:\jrun4\logs\ > > or > > /opt/jrun4/logs > > Alternatively, you might try running CF as an application rather than > a service, which will pipe startup errors to your command prompt or > terminal window. > > Dave Watts, CTO, Fig Leaf Software > http://www.figleaf.com/ > http://training.figleaf.com/ > > Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on > GSA Schedule, and provides the highest caliber vendor-authorized > instruction at our training centers, online, or onsite. > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347955 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
> Nothing in server.log available in CFAdmin. Just the successful start info > from after I reverted the JVM version. Am I missing something? The log you're interested in is one of the JRun logs file (cfusion-out.log or cfusion-event.log, I forget which.). I'm not sure where that's located if you're using the standalone install of CF, but on multiserver, it's something like: c:\jrun4\logs\ or /opt/jrun4/logs Alternatively, you might try running CF as an application rather than a service, which will pipe startup errors to your command prompt or terminal window. Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ http://training.figleaf.com/ Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on GSA Schedule, and provides the highest caliber vendor-authorized instruction at our training centers, online, or onsite. ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347953 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
Nothing in server.log available in CFAdmin. Just the successful start info from after I reverted the JVM version. Am I missing something? On Wed, Oct 5, 2011 at 1:01 PM, Dave Watts wrote: > > > The ColdFusion 8 Application Server service terminated with > service-specific > > error 2 (0x2). > > What's in the log file? (not the Event Viewer - that doesn't capture > any information from CF) > > Dave Watts, CTO, Fig Leaf Software > http://www.figleaf.com/ > http://training.figleaf.com/ > > Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on > GSA Schedule, and provides the highest caliber vendor-authorized > instruction at our training centers, online, or onsite. > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347945 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
> The ColdFusion 8 Application Server service terminated with service-specific > error 2 (0x2). What's in the log file? (not the Event Viewer - that doesn't capture any information from CF) Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ http://training.figleaf.com/ Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on GSA Schedule, and provides the highest caliber vendor-authorized instruction at our training centers, online, or onsite. ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347944 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
Event Type: Error Event Source: Service Control Manager Event Category: None Event ID: 7024 Date: 10/5/2011 Time: 10:29:23 AM User: N/A Description: The ColdFusion 8 Application Server service terminated with service-specific error 2 (0x2). On Wed, Oct 5, 2011 at 12:36 PM, Dave Watts wrote: > > > > Are you experiencing any problems with the current behaviour? > > > > We're just tuning stuff to get the fastest possible responses from our > app. > > Jochem is right, though - unless you're having a problem with memory > consumption, I don't see what you're trying to accomplish by tuning > memory use. Doing this won't directly make your application faster or > slower, assuming that the application is able to allocate the memory > it needs (which appears to be the case). > > > Related: I just tried to upgrade to Java version 1.6.0_27 but CF failed > to > > start after I did so. Know what the max Java version 1.6.0_* usable with > ACF > > 8 is? > > Actually, I think that should work. What error did you get when you > tried to start CF? > > Dave Watts, CTO, Fig Leaf Software > http://www.figleaf.com/ > http://training.figleaf.com/ > > Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on > GSA Schedule, and provides the highest caliber vendor-authorized > instruction at our training centers, online, or onsite. > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347943 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
> > Are you experiencing any problems with the current behaviour? > > We're just tuning stuff to get the fastest possible responses from our app. Jochem is right, though - unless you're having a problem with memory consumption, I don't see what you're trying to accomplish by tuning memory use. Doing this won't directly make your application faster or slower, assuming that the application is able to allocate the memory it needs (which appears to be the case). > Related: I just tried to upgrade to Java version 1.6.0_27 but CF failed to > start after I did so. Know what the max Java version 1.6.0_* usable with ACF > 8 is? Actually, I think that should work. What error did you get when you tried to start CF? Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ http://training.figleaf.com/ Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on GSA Schedule, and provides the highest caliber vendor-authorized instruction at our training centers, online, or onsite. ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347940 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
> Are you experiencing any problems with the current behaviour? We're just tuning stuff to get the fastest possible responses from our app. Related: I just tried to upgrade to Java version 1.6.0_27 but CF failed to start after I did so. Know what the max Java version 1.6.0_* usable with ACF 8 is? On Wed, Oct 5, 2011 at 10:24 AM, Jochem van Dieten wrote: > > On Wed, Oct 5, 2011 at 6:25 AM, John M Bliss wrote: > > Regularly, CF briefly consumes all but about 50 MB of max heap size. > > Isn't that what is supposed to happen? The JVM uses memory until it > runs out which starts the garbage collector. > > Are you experiencing any problems with the current behaviour? > > Jochem > > -- > Jochem van Dieten > http://jochem.vandieten.net/ > > ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347936 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: JVM Heap Size
On Wed, Oct 5, 2011 at 6:25 AM, John M Bliss wrote: > Regularly, CF briefly consumes all but about 50 MB of max heap size. Isn't that what is supposed to happen? The JVM uses memory until it runs out which starts the garbage collector. Are you experiencing any problems with the current behaviour? Jochem -- Jochem van Dieten http://jochem.vandieten.net/ ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:347935 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
JVM Heap Size
Based on some JVM tuning advice I Googled a while back, I have (on ACF 8)
minimum and maximum JVM heap size set to 1024 MB. Server has 2 GB of RAM and
is currently running Java version 1.6.0_10 with JVM arguments:
-server -XX:MaxPermSize=192m -XX:PermSize=192m -XX:+UseParallelGC
-Dsun.rmi.dgc.client.gcInterval=60
-Dsun.rmi.dgc.server.gcInterval=60
-Dcoldfusion.rootDir={application.home}/../
-Dcoldfusion.libPath={application.home}/../lib
Server is Microsoft Windows Server 2003 R2 (32 bit).
Regularly, CF briefly consumes all but about 50 MB of max heap size. For a
moment, assume that my CFML is as optimized as possible...is there anything
more I can tweak to:
- provide more RAM to CF
and/or
- "encourage" CF to use existing RAM more efficiently
--
John Bliss - http://about.me/jbliss
~|
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ColdFusion TechNote Notification: "Maximum JVM heap size greater than 1.8GB will prevent ColdFusion MX from starting"
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