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zeejayy
Currently Being Moderated

Memory Leak issue "macromedia.util.UtilPagedTempBuffer"

Nov 2, 2011 2:11 PM

For the past couple of weeks, I've been working on a memory leak on one of our servers.

The application runs a lot of heavy querys and ajax stuff. After about 12 hours or so, the

heap grows up to the max size, then the server starts to grind to a halt with GC overhead

limit exceeded errors and it has to be restarted.

 

The server is running win 2003, cf 8.01 with the latest hotfixes and and MS SQL Server 2005.

 

I've run a heap dump through Eclipse MAT and it came up with the following leak suspects.

 

Problem Suspect 1

7,500 instances of "macromedia.util.UtilPagedTempBuffer", loaded by

"coldfusion.bootstrap.BootstrapClassLoader @ 0x10b56120" occupy 351,566,904 (42.45%) bytes.

 

Keywords

macromedia.util.UtilPagedTempBuffer

coldfusion.bootstrap.BootstrapClassLoader @ 0x10b56120

 

Problem Suspect 2

14 instances of "macromedia.jdbc.base.BaseWarnings", loaded by

"coldfusion.bootstrap.BootstrapClassLoader @ 0x10b56120" occupy 294,957,568 (35.61%) bytes.

 

Biggest instances:

 

macromedia.jdbc.base.BaseWarnings @ 0x1d785958 - 80,087,248 (9.67%) bytes.

macromedia.jdbc.base.BaseWarnings @ 0x11fa03b8 - 63,612,424 (7.68%) bytes.

macromedia.jdbc.base.BaseWarnings @ 0x110df0f8 - 63,214,312 (7.63%) bytes.

macromedia.jdbc.base.BaseWarnings @ 0x2da73540 - 40,891,344 (4.94%) bytes.

macromedia.jdbc.base.BaseWarnings @ 0x11095ca0 - 17,197,352 (2.08%) bytes.

macromedia.jdbc.base.BaseWarnings @ 0x2a40aba8 - 12,229,040 (1.48%) bytes.

 

Keywords

coldfusion.bootstrap.BootstrapClassLoader @ 0x10b56120

macromedia.jdbc.base.BaseWarnings

 

Problem Suspect 3

1,050 instances of "macromedia.jdbc.base.BasePreparedStatement", loaded by

"coldfusion.bootstrap.BootstrapClassLoader @ 0x10b56120" occupy 121,908,464 (14.72%) bytes.

 

Keywords

macromedia.jdbc.base.BasePreparedStatement

coldfusion.bootstrap.BootstrapClassLoader @ 0x10b56120

 

I think these have something to do with querys and SQL but i can't pinpoint

the cause as of yet. If anybody has some insight on what my next step would

be then it would be much appreciated.

 
Replies
  • Currently Being Moderated
    May 1, 2012 7:25 AM   in reply to zeejayy

    Did you ever find a resolution to this? I am running into this and am not sure what may be causing it. I have CF 9.0.1 on win 2008 64bit with SQL Server 2008. Here is my report.

     

    Problem Suspect 1

    9,935 instances of "macromedia.util.UtilPagedTempBuffer", loaded by "sun.misc.Launcher$AppClassLoader @ 0x780000cf8" occupy 645,586,384 (35.28%) bytes.

     

     

    Keywords

    macromedia.util.UtilPagedTempBuffer

    sun.misc.Launcher$AppClassLoader @ 0x780000cf8

     

     

     

     

    Problem Suspect 2

    12,919 instances of "macromedia.jdbc.base.BasePreparedStatement", loaded by "sun.misc.Launcher$AppClassLoader @ 0x780000cf8" occupy 538,577,736 (29.43%) bytes.

     

     

    Keywords

    macromedia.jdbc.base.BasePreparedStatement

    sun.misc.Launcher$AppClassLoader @ 0x780000cf8

     
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