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From "Aleksey Ignatenko" <aleksey.ignate...@gmail.com>
Subject Re: [vm] Memory usage of DRLVM/IBM VME/JRockit
Date Mon, 19 Feb 2007 11:18:18 GMT
Did you set the same -Xmx -Xms options for all VMs? It will garantee you run
all VMs on the same heap size and the results could differ from those you
presented.

Best regards,
Aleksey.


On 2/19/07, Tim Ellison <t.p.ellison@gmail.com> wrote:
>
> I'm running a simple Hello World app on Windows XP x86, and looking at
> the corresponding private virtual memory usage with Sysinternals.
>
>                          Virtual Memory
>                          Private Bytes      version
> Sun with client VM      ~13Mb              1.5.0b10
> Harmony with IBM VME    ~15Mb              head with VMEv4
> Harmony with DRLVM      ~40Mb              snapshot r505120
> Harmony with JRockit    ~80Mb              head with H_27_2_1
>
> The DRL numbers add up, seems to be using big libraries with large
> working sets.  I can't account for the JRockit total.
>
> I printed out the large DLLs (>1Mb size/working set) for each
> Harmony-based runtime below.
>
> IBM VME
> -------
> Name          Description               Size     WS Total
> icudt34.dll   ICU Data DLL              8,640 K      80 K
> j9jit23.dll   J9 Virtual Machine Runti* 2,784 K   1,696 K
> ...
>
> DRLVM
> -----
> Name          Description               Size     WS Total
> icudt34.dll   ICU Data DLL              8,640 K      60 K
> shell32.dll   Windows Shell Common Dll  8,276 K     120 K
> hythr.dll                               4,124 K     132 K
> harmonyvm.dll                           4,008 K   3,960 K
> jitrino.dll                             3,900 K   3,880 K
> comctl32.dll  User Experience Controls  1,036 K     156 K
> ...
>
> JRockit
> -------
> Name          Description               Size     WS Total
> icudt34.dll   ICU Data DLL              8,640 K      68 K
> jvm.dll       BEA JRockit(r) Java Virtua* 2,532 K   2,004 K
> ole32.dll     Microsoft OLE for Windows 1,268 K       68K
> ...
>

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