Mike Thanks for the reply, can I confirm that this is only relevant to CFMX And that with CF5 there is no performance hit involved in heavy use of try catch blocks?
Thanks >> -----Original Message----- >> From: Mike Chambers [mailto:[EMAIL PROTECTED]] >> Sent: 15 October 2002 15:31 >> To: CF-Talk >> Subject: RE: switch-case was RE: BlueDragon (was RE: How is CFMX J2EE >> implemented?) >> >> The try isn't too expensive, but the catch can be. However, running a >> bunch of trys within a loop can also degrade performance. >> >> The catch generates significant overhead when an exception is thrown >> because a copy of the stack has to be created. >> >> a quick search of google turns up: >> >> http://www.javaworld.com/javaworld/javaqa/2001-07/04-qa-0727-try.html >> >> http://ccm.redhat.com/doc/core-platform/5.0/engineering-standards/perfor >> mance-optimization.html#Exceptions >> >> there is also a good discussion of it in: >> >> Java Performance Tuning published by O'Reilly. >> >> In general, you should not use try / catch for flow control. >> >> hope that helps... >> >> mike chambers >> >> [EMAIL PROTECTED] >> >> >> > -----Original Message----- >> > From: Kola Oyedeji [mailto:[EMAIL PROTECTED]] >> > Sent: Tuesday, October 15, 2002 4:33 AM >> > To: CF-Talk >> > Subject: RE: switch-case was RE: BlueDragon (was RE: How is >> > CFMX J2EE implemented?) >> > >> > >> > Hi >> > >> > Sean, have I missed something, are you saying try and catch add a >> > significant performance overhead? >> > >> > >> > Thanks >> > >> > Kola >> > >> > >> -----Original Message----- >> > >> From: Sean A Corfield [mailto:[EMAIL PROTECTED]] >> > >> Sent: 15 October 2002 02:08 >> > >> To: CF-Talk >> > >> Subject: Re: switch-case was RE: BlueDragon (was RE: How >> > is CFMX J2EE >> > >> implemented?) >> > >> >> > >> >> > >> try/catch is a pretty heavy operation - you should only use it for >> > >> (unexpected) error cases, not normal operation... >> > >> >> > >> > >> > >> > >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk FAQ: http://www.thenetprofits.co.uk/coldfusion/faq This list and all House of Fusion resources hosted by CFHosting.com. The place for dependable ColdFusion Hosting.
