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From Tony Anecito <adanec...@yahoo.com>
Subject Re: Performance OpenJDK compared with SunJDK
Date Mon, 12 Dec 2011 23:36:23 GMT
You forgot the most important option of all for  64-bit:
-XX:+UseCompressedOops
 
-Tony

--- On Mon, 12/12/11, Toni Menendez Lopez <tonimenen@gmail.com> wrote:


From: Toni Menendez Lopez <tonimenen@gmail.com>
Subject: Re: Performance OpenJDK compared with SunJDK
To: "JMeter Users List" <user@jmeter.apache.org>
Date: Monday, December 12, 2011, 4:10 PM


Here is mi Jmeter parameters,

NEW="-XX:NewSize=128m -XX:MaxNewSize=128m"
HEAP="-Xms2g -Xmx2g"
PERM="-XX:PermSize=64m -XX:MaxPermSize=64m"
SERVER="-server"
DUMP="-XX:+HeapDumpOnOutOfMemoryError"
RMIGC="-Dsun.rmi.dgc.client.gcInterval=600000
-Dsun.rmi.dgc.server.gcInterval=600000"
TENURING="-XX:MaxTenuringThreshold=2"


ARGS="$SERVER $DUMP $HEAP $NEW $TENURING  $RMIGC $PERM"
java $ARGS $JVM_ARGS -jar `dirname $0`/ApacheJMeter.jar "$@"

Toni.

2011/12/12, Tony Anecito <adanecito@yahoo.com>:
> Thanks that occurred to me after I sent the email. So what command line
> parameters did you use?
>
> -Tony
>
> --- On Mon, 12/12/11, Toni Menendez Lopez <tonimenen@gmail.com> wrote:
>
> From: Toni Menendez Lopez <tonimenen@gmail.com>
> Subject: Re: Performance OpenJDK compared with SunJDK
> To: "JMeter Users List" <user@jmeter.apache.org>
> Date: Monday, December 12, 2011, 2:06 PM
>
> I have in both cases 64 bits, but in one case SunJDK and in other OpenJDK,
>
> 1st case,
>
> $ java -version
> java version "1.6.0_15"
> Java(TM) SE Runtime Environment (build 1.6.0_15-b03)
> Java HotSpot(TM) 64-Bit Server VM (build 14.1-b02, mixed mode)
>
>
> 2nd case,
>
> $ java -version
> java version "1.6.0"
> OpenJDK  Runtime Environment (build 1.6.0-b09)
> OpenJDK 64-Bit Server VM (build 1.6.0-b09, mixed mode)
>
>
>
>
> 2011/12/12, Tony Anecito <adanecito@yahoo.com>:
>> If you do not tune the 64-bit version yes it will perform badly. It is a
>> known issue 64-bit performs worse than 32-bit.
>>
>> -Tony
>>
>> --- On Mon, 12/12/11, Toni Menendez Lopez <tonimenen@gmail.com> wrote:
>>
>> From: Toni Menendez Lopez <tonimenen@gmail.com>
>> Subject: Performance OpenJDK compared with SunJDK
>> To: user@jmeter.apache.org
>> Date: Monday, December 12, 2011, 1:34 PM
>>
>> Hello all,
>>
>> I want to ask all of you on question !
>>
>> I am normally working with SunJDK for Jmeter and running in non-gui
>> mode, but now I want to migrate the openJDK ( OpenJDK 64-Bit Server VM
>> (build 1.6.0-b09, mixed mode)).
>>
>> I have executed the same test in SunJDK and OpenJDK and I have
>> experienced that Jmeter has worst performance sending the traffic with
>> OPenJDK that with SunJDK.
>>
>> Any of you have got some similar experience ?
>>
>> My O.S is RHEL5.4
>>
>> Best regards,
>>
>> Toni.
>>
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>>
>
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