Maybe this is a dumb question but is there a way I can tell what the heap size is before I try setting it? Or what is available? Can you tell me the relationship between -Xms/-Xmx and -XX:NewSize/-XX:MaxNewSize? Maybe this will help me understand the two settings.
-----Original Message----- From: Peter Lin [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 24, 2004 6:38 AM To: JMeter Users List Subject: Re: win 2000 that's strange. when I run it with and without the extra options on my gateway laptop running XP and my old P3 450 it is faster if I just have "-server" without all the extra options. maybe it's just my system or configuration. peter On Tue, 24 Aug 2004 13:13:29 +0200, Jordi Salvat i Alabart <[EMAIL PROTECTED]> wrote: > It's exactly the opposite: you'll want those parameters (tuned as > suggested in the script's comments) when you need to generate high loads > -- that is: in actual use, not during development. > > These settings minimise (or almost) the amount of time spent in garbage > collection. This increases maximum throughput (i.e. the amount of > traffic you can generate with a given machine and a given script). They > also reduce the frequency of full GCs to a minimum (most tests running > for only a few hours will never need a full GC) thus reducing > measurement error. > > I can't tell why Michael is getting that error with the HEAP options in > place -- those default parameters work well for me with JDK 1.4.2_03 (I > don't have _04 at hand). > > But removing the -Xms/-Xmx without removing the > -XX:NewSize/-XX:MaxNewSize as he did in his last message causes exactly > that (as I would expect: the default heap is far too small to accomodate > a 128m new space). So leave all those parameters in place or remove them > all. > > -- > Salut, > > Jordi. > > En/na Peter Lin ha escrit: > > > > can you try commenting out all the extra VM parameters? > > > > usually I do that, since many of the settings really shouldn't be used > > for regular use. It's good for developers writing samplers and > > plugins, but not necessarily great for just running tests. > > > > peter > > > > > > On Mon, 23 Aug 2004 13:16:16 -0600, Michael Chandler > > <[EMAIL PROTECTED]> wrote: > > > >>I installed j2sdk1.4.2_04. The same on both XP and win2k. I also have > >>j2sdk1.4.0-rc and j2sdk1.4.0_01. The newer one is first in my path and > >>classpath. > >> > >>Here is the echo (without [HEAP=-Xms256m -Xmx256m]): > >>echo %JAVA_HOME%\bin\java %JVM_ARGS% %ARGS% -jar ApacheJMeter.jar > >>%JMETER_CMD_LINE_ARGS% > >> > >>c:\j2sdk1.4.2_04\bin\java -XX:NewSize=128m -XX:MaxNewSize=128m > >>-XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=50 > >>-XX:MaxTenuringThreshold=2 -XX:MaxLiveObjectEvacuationRatio=20 > >>-Dsun.rmi.dgc.client.gcInterval=600000 > >>-Dsun.rmi.dgc.server.gcInterval=600000 -XX:PermSize=64m > >>-XX:MaxPermSize=64m -verbose:gc -XX:+PrintTenuringDistribution -jar > >>ApacheJMeter.jar > >>Error occurred during initialization of VM > >>Incompatible initial and maximum heap sizes specified > >> > >>-----Original Message----- > >>From: BAZLEY, Sebastian [mailto:[EMAIL PROTECTED] > >>Sent: Monday, August 23, 2004 12:16 PM > >>To: 'JMeter Users List' > >>Subject: RE: win 2000 > >> > >>Did you install the full JDK, or just the JRE? > >> > >>Some of the options may only make sense if the "server" flavour of the > >>JVM > >>is installed. > >> > >>Certainly java -server only works if the full JDK is installed ... > >> > >>S. > >>-----Original Message----- > >>From: Michael Chandler [mailto:[EMAIL PROTECTED] > >>Sent: 23 August 2004 19:07 > >>To: JMeter Users List > >>Subject: RE: win 2000 > >> > >>If I take it out, it still gives me the error. I'll try rebooting here > >>in a minute and do it again. I've tried several combos. I'll look at > >>java - X, also. > >> > >>-----Original Message----- > >>From: Peter Lin [mailto:[EMAIL PROTECTED] > >>Sent: Monday, August 23, 2004 11:55 AM > >>To: JMeter Users List > >>Subject: Re: win 2000 > >> > >>it should work if you remove it. I have JMeter 2 and 1.9 running on my > >>workstation at home, which is running win2K. it works with Sun > >>jdk1.4.2_03 and jdk5 > >> > >>peter > >> > >>On Mon, 23 Aug 2004 11:44:58 -0600, Michael Chandler > >><[EMAIL PROTECTED]> wrote: > >> > >>>I've been running Jmeter successfully on my XP box. When I try to run > >> > >>it > >> > >>>on a Win 2000 box, I get the error: > >>> > >>>Error occurred during initialization of VM > >>>Incompatible initial and maximum heap sizes specified. > >>> > >>>The jmeter.bat file has the entry: > >>>set HEAP=-Xms256m -Xmx256m > >>> > >>>I tried resetting it but haven't found the correct combination. > >>> > >>>Any ideas? > >>> > >>> > >> > >>--------------------------------------------------------------------- > >>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>For additional commands, e-mail: [EMAIL PROTECTED] > >> > >>--------------------------------------------------------------------- > >>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>For additional commands, e-mail: [EMAIL PROTECTED] > >> > >> > >>_______________________________________________________ > >> > >>This e-mail and the documents attached are confidential and intended > >>solely for the addressee; it may also be privileged. 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