• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: Session timeout and memory
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Session timeout and memory


  • Subject: Re: Session timeout and memory
  • From: Q <email@hidden>
  • Date: Tue, 12 Sep 2006 09:43:35 +1000


On 12/09/2006, at 2:26 AM, Chuck Hill wrote:

In addition to garbage collection which has been mentioned, be careful of what you are looking at. If additional memory is allocated to the JVM process, it will not be returned to the operating system until the JVM process terminates. In other words, the total heap size will never decrease but free memory on the heap will vary as objects are created and the garbage collector runs.

Chuck

It should also be pointed out that this is a good thing not a liability that needs special consideration, because it means that the JVM doesn't need to constantly malloc and free memory. Provided there isn't an actual leak causing the JVM size to continually grow unexpectedly, the virtual memory allocation shouldn't be something to really worry about, as any vm pages that go unused for long enough will eventually get paged out by the OS should the physical memory be required for something else. Assuming your OS has got enough swap allocated.


--
Seeya...Q

               -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

                          _____  /  Quinton Dolan - email@hidden
  __  __/  /   /   __/   /      /
     /    __  /   _/    /      /        Gold Coast, QLD, Australia
  __/  __/ __/ ____/   /   -  /            Ph: +61 419 729 806
                    _______  /
                            _\



_______________________________________________
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden


References: 
 >Session timeout and memory (From: Ute Hoffmann <email@hidden>)
 >Re: Session timeout and memory (From: Chuck Hill <email@hidden>)

  • Prev by Date: Re: New WOComponent instance
  • Next by Date: Moving Classes into a package
  • Previous by thread: Re: Session timeout and memory
  • Next by thread: Re: Session timeout and memory
  • Index(es):
    • Date
    • Thread