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[protege-discussion] Fwd: Protege 3.4.4 (579) 64-bit max heap size

Len Yabloko protege at ontospace.net
Fri Sep 3 12:55:01 PDT 2010


I got 8G on Windows 7 Professional 64-bit 

However, when I run Protege 3.3.4 64-bit with protege.lax set
lax.nl.java.option.java.heap.size.max=6400000000
I only get 1871M allocated as show below

cwd: C:\Program Files\Protege_3.4.4
cmd: "C:\Program Files\Java\jdk1.6.0_21\bin\java.exe" -Xms262144000 -Xmx2105032704 -classpath "C:\Program Files\Protege_3.4.4\protege.jar;C:\Program Files\Prote
ge_3.4.4\looks.jar;C:\Program Files\Protege_3.4.4\unicode_panel.jar;C:\Program F
iles\Protege_3.4.4\driver.jar;C:\Program Files\Protege_3.4.4\driver0.jar;C:\Prog
ram Files\Protege_3.4.4\driver1.jar;C:\Program Files\Protege_3.4.4\driver2.jar$;
C:\Program Files\Protege_3.4.4\lax.jar;" com.zerog.lax.LAX "C:/Program Files/Pro
tege_3.4.4/Protege.lax" "C:/Users/Len/AppData/Local/Temp/laxEB4C.tmp"
Protege 3.4.4 Build 579, JVM 1.6.0_21-b07, memory=1871M, Windows 7, encoding=UTF
-8, language=en, country=US





 

>
>How much physical memory do you have?   You can allocate more than
>exits, so it just swaps pages in/out.
>Disk light on all time after you get to that point is a clear indicator.
>I would guess you have only 4gb real memory, so windows can only give
>the process about 2.5 to 3gb before it has to swap
>
>- Stanley
>
>-----Original Message-----
>From: protege-discussion-bounces at lists.stanford.edu
>[mailto:protege-discussion-bounces at lists.stanford.edu] On Behalf Of Len
>Yabloko
>Sent: Friday, September 03, 2010 12:12 PM
>To: User support for Core Protege and the Protege-Frames editor
>Subject: Re: [protege-discussion] Protege 3.4.4 (579) 64-bit max heap
>size
>
>Yes, I tried all variations and seems to corrently allocate memory.
>
>I have this code running inside my tab plugin:
>
>public static long test = Runtime.getRuntime().maxMemory()/1014;
>    static {
>    	System.out.println("Total memory : " +test+ " KB");
>    }
>}
>
>It results in: Total memory : 5515235 KB
>
>Windows 7 task manager show java.exe quickly climing to about 2G and
>stays there. What could explain this? Do I need a specialy compiled
>protege.jar?
>
>>
>>Had you tried -Xmx6000M?
>>
>>http://download.oracle.com/javase/6/docs/technotes/tools/windows/java.h
>tml
>>
>>-Xmsn
>>Specify the initial size, in bytes, of the memory allocation pool. This
>
>>value must be a multiple of 1024 greater than 1MB. Append the letter k 
>>or K to indicate kilobytes, or m or M to indicate megabytes. The
>default 
>>value is chosen at runtime based on system configuration.
>>
>>On 9/3/2010 10:57 AM, Len Yabloko wrote:
>>> Hello everyone,
>>>
>>> I am running latest Protege Frames version on Windows 7 64-bit and
>trying to generate a very large frame ontology by loading data from
>MySQL database using frame API. I have allocated 6G to jvm and checked
>Runtime.maxMemory() to verify that is was correctly allocated. But for
>some reason when memory reaches about 2.5G (according to Windows task
>manager) it stops allocating and loading slows after about 15,000 frames
>loaded. I tried launching Protege with -vmargs -Xmx6g using 64-bit jvm,
>but no luck so far.
>>>
>>> Can someone suggest what may be a cause of such behavior?
>>>
>>>
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>>
>>
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>
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