memory allocation for a m

Path	csiph.com!x330-a1.tempe.blueboxinc.net!feeder1.hal-mli.net!border3.nntp.dca.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!news-in-01.newsfeed.easynews.com!easynews.com!easynews!news-out.news.tds.net!newsreading01.news.tds.net!86597e80!not-for-mail
From	"Brandon McCombs" <brandon.mccombs@THRWHITE.remove-dii-this>
Subject	memory allocation for a m
Message-ID	<45a1dc0d$0$11216$4c368faf@roadrunner.com> (permalink)
X-Comment-To	comp.lang.java.gui
Newsgroups	comp.lang.java.gui
Content-Type	text/plain; charset=IBM437
Content-Transfer-Encoding	8bit
X-Gateway	time.synchro.net [Synchronet 3.15a-Win32 NewsLink 1.92]
Lines	33
Date	Wed, 27 Apr 2011 15:28:24 GMT
NNTP-Posting-Host	96.60.20.240
X-Complaints-To	news@tds.net
X-Trace	newsreading01.news.tds.net 1303918104 96.60.20.240 (Wed, 27 Apr 2011 10:28:24 CDT)
NNTP-Posting-Date	Wed, 27 Apr 2011 10:28:24 CDT
Organization	TDS.net
Xref	x330-a1.tempe.blueboxinc.net comp.lang.java.gui:589

Show key headers only | View raw

  To: comp.lang.java.gui
hello,

My application makes multiple JNDI search calls to a directory server. 
The search method returns a NamingEnumeration of SearchResults and I run 
through a while loop that converts the enumeration to a Vector of 
SearchResults. At another time I process the Vector to add the 
SearchResults to a ListModel for viewing their properties.

My application takes up a lot of memory after running that search 
operation a handful of times. It seems that the majority of the memory 
allocation comes from the hasMoreElements() method of the enumeration 
that I call within the while() mentioned above.  I don't see any way of 
not calling that method since I need it to grab the search results. The 
question I have is why would the JVM use so much space for that method 
and is there anything I can do to reclaim the memory?  JProfiler says 
that after a handful of search() executions there are over a million 
allocations of hasMoreElements() that take up 50 megs. Jprofiler shows 
garbage collections are occurring but since a method and not an Object 
is taking up the memory I don't know how to fix this problem.

As a side note, if it was possible to properly cancel JNDI search 
methods (from the InitialLdapContext class) then I wouldn't have such a 
problem but once those searches start they can't be canceled from what I 
can gather, despite utilizing threads.

thanks
Brandon

---
 * Synchronet * The Whitehouse BBS --- whitehouse.hulds.com --- check it out free usenet!
--- Synchronet 3.15a-Win32 NewsLink 1.92
Time Warp of the Future BBS - telnet://time.synchro.net:24

Back to comp.lang.java.gui | Previous | Next — Next in thread | Find similar

Thread

memory allocation for a m "Brandon McCombs" <brandon.mccombs@THRWHITE.remove-dii-this> - 2011-04-27 15:28 +0000
  Re: memory allocation for "Daniel Pitts" <daniel.pitts@THRWHITE.remove-dii-this> - 2011-04-27 15:28 +0000
    Re: memory allocation for "Brandon McCombs" <brandon.mccombs@THRWHITE.remove-dii-this> - 2011-04-27 15:28 +0000
      Re: memory allocation for "Brandon McCombs" <brandon.mccombs@THRWHITE.remove-dii-this> - 2011-04-27 15:28 +0000
  Re: memory allocation for "Nigel Wade" <nigel.wade@THRWHITE.remove-dii-this> - 2011-04-27 15:28 +0000
    Re: memory allocation for "Brandon McCombs" <brandon.mccombs@THRWHITE.remove-dii-this> - 2011-04-27 15:28 +0000

csiph-web