Good call on looking at external and code issues.

I had a server that would hang solid every few days and FusionReactor 
showed me the culprit: a lock deep in some CF library. Took care of that 
and the server's been rock-solid since.

On 8/29/12 5:56 PM, Wil Genovese wrote:
> Do you have any metrics monitoring of the JVM?  There can be any number of 
> reason why sites are "sluggish" at times.  Blindly altering the JVM settings 
> may not help you and may hurt your cause.
>
> You can enable metrics logging in ColdFusion Standard by editing the JRUN.XML 
> file. 
> http://cfwhisperer.net/post.cfm/10-steps-to-a-stable-and-performant-web-application-step-2
>
> You can download and run CFTracker  http://www.cftracker.net
>
> You can install the Trial of Fusion Reactor or SeeFusion.
>
> All of these will give you greater insight into your server, JVM inner memory 
> spaces and the last two can give you metrics data on the JDBC data.
>
> Odds are ColdFusion is keeping just fine. In most cases that I've worked on 
> there are outside factors affecting the server; database, system I/O, 
> backups, network issues,  cfhttp calls, over active spiders, unexpected 
> consequences of code when scaled etc.
>
> Regards,
>
>
> Wil Genovese
> Sr. Web Application Developer/
> Systems Administrator
> CF Webtools
> www.cfwebtools.com
>
> wilg...@trunkful.com
> www.trunkful.com
>
> On Aug 29, 2012, at 7:38 PM, Robert Rhodes wrote:
>
>> Yes: Java HotSpot(TM) 64-Bit Server VM
>>
>> How about I try setting min and max heap size to 2gb and see how that goes?
>> Anything else I should tweak?  Garbage Collection?
>>
>> On Wed, Aug 29, 2012 at 8:05 PM, .jonah <jonah....@creori.com> wrote:
>>
>>> Are you running 64bit Java?
>>>
>>> You can give the JVM as much RAM as you can spare.
>>>
>>>
>>> On 8/29/12 4:56 PM, Robert Rhodes wrote:
>>>> Hello to all.
>>>>
>>>> I have several Windows 2008 R2 x64 servers running Coldfusion 9 standard.
>>>>   Each has 6 gigabytes of RAM.  Each runs about 50 fairly active sites.
>>> I
>>>> have not had any JVM errors I know about but sometimes the sites run
>>> slower
>>>> than they should, as if CF is having trouble keeping up.
>>>>
>>>> Any suggestions on JVM settings for this configuration?  Currently, I
>>> have
>>>> Min and Max JVM size both set at 1GB.  I have changed no other arguments.
>>>>
>>>> Thanks for the help.
>>>>
>>>> -RR
>>>>
>>>>
>>>>
>>>
>>
> 

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