trouble passing JVM startup options using JTREG

Ram Krishnan ramkri123 at gmail.com
Tue Apr 18 22:35:30 UTC 2017


Hi Igor,

It is indeed working now. Many thanks!

Thanks,
Ramki

On Tue, Apr 18, 2017 at 9:23 AM, Igor Ignatyev <igor.ignatyev at oracle.com>
wrote:

> Ramki,
>
> if you want jtreg to pass a flag to JDK under test,you should specify by
> jtreg -javaoptions flag[1]:
>
> ​​
> /home/ramki/9dev/build/linux-x86_64-normal-server-release/images/jdk/bin/java
> -jar /home/ramki/jtreg/lib/jtreg.jar -verbose:all -javaoptions:-XX:ConcGCThreads=1
> -jdk:/home/ramki/9dev/build/linux-x86_64-normal-server-
> release/images/jdk  /home/ramki/9dev/hotspot/test/gc/g1/
> TestEagerReclaimHumongousRegionsClearMarkBits.java
>
> [1] http://openjdk.java.net/jtreg/command-help.html
>
> Thanks,
> -- Igor
>
> On Apr 18, 2017, at 9:16 AM, Ram Krishnan <ramkri123 at gmail.com> wrote:
>
> Hi Dima,
>
> Thanks.
>
> I tried your suggestion and also examined the .jtr file in ​
> ​​
> JTWork/gc/g1/ folder. I am getting the same results as before.
>
> Thanks,
> Ramki
>
> On Tue, Apr 18, 2017 at 8:12 AM, Dmitry Fazunenko <
> dmitry.fazunenko at oracle.com> wrote:
>
>> Hi Ramki,
>>
>> I think you need to specify "-jdk:<your_java_home>" option to jtreg:
>>
>> /home/ramki/9dev/build/linux-x86_64-normal-server-release/images/jdk/bin/java
>> -jar /home/ramki/jtreg/lib/jtreg.jar -verbose:all
>> *-jdk:/home/ramki/9dev/build/linux-x86_64-normal-server-release/images/jdk*
>> /home/ramki/9dev/hotspot/test/gc/g1/TestEagerReclaimHumongousRegionsClearMarkBits.java
>>
>>
>> More information about test execution you can find in the .jtr file
>> created in
>> ​​
>> JTWork/gc/g1/ folder.
>>
>> Thanks,
>> Dima
>>
>>
>>
>> On 18.04.2017 17:56, Ram Krishnan wrote:
>>
>> Hi Dmitry,
>>
>> Thanks, more below.
>>
>> In the expanded command line option, ​ConcGCThread is indeed set to 1 as
>> expected in the ​ReclaimRegionFastclass JVM. In the direct jtreg option,
>> ​ConcGCThread is 0 in both JVMs. The usage details are below. My build is
>> based on JDK 9 and I downloaded the latest jtreg. There may be something
>> wrong in my jtreg usage -- can you please clarify?
>>
>> Using jtreg directly does not work
>> ----------------------------------
>> /home/ramki/9dev/build/linux-x86_64-normal-server-release/images/jdk/bin/java
>> -jar /home/ramki/jtreg/lib/jtreg.jar -verbose:all
>> /home/ramki/9dev/hotspot/test/gc/g1/TestEagerReclaimHumongousRegionsClearMarkBits.java
>>
>>
>> Command line option works
>> -------------------------
>> /home/ramki/9dev/build/linux-x86_64-normal-server-release/images/jdk/bin/java
>> -cp /home/ramki/9dev/hotspot/test/JTwork/classes/gc/g1:/home/ram
>> ki/9dev/hotspot/test/gc/g1:/home/ramki/9dev/hotspot/test/J
>> Twork/classes/test/lib:/home/ramki/9dev/test/lib:/home/ramki
>> /jtreg/lib/javatest.jar:/home/ramki/jtreg/lib/jtreg.jar -XX:+UseG1GC
>> -Xms128M -Xmx128M -Xmn2M -XX:G1HeapRegionSize=1M
>> -XX:InitiatingHeapOccupancyPercent=0 -Xlog:gc
>> -XX:+UnlockDiagnosticVMOptions -XX:+VerifyAfterGC -XX:ConcGCThreads=1
>> -XX:+IgnoreUnrecognizedVMOptions -XX:+G1VerifyBitmaps
>> -XX:G1GcCpuLLCCachePartitionPercent=48 ReclaimRegionFast
>>
>> Thanks,
>> Ramki
>>
>> On Mon, Apr 17, 2017 at 11:21 PM, Dmitry Fazunenko <
>> dmitry.fazunenko at oracle.com> wrote:
>>
>>> Hi Ramki,
>>>
>>> It's very unlikely to be an issue related to jtreg somehow.
>>> I ran the test you mentioned manually, this is the quote from .jtr file:
>>> ...
>>> Command line: [/jdk9/solaris-sparcv9/bin/java -d64 -cp
>>> /home/fa/hs-int/hotspot/test/gc/g1/JTwork/classes/gc/g1:/hom
>>> e/fa/hs-int/hotspot/test/gc/g1:/home/fa/hs-int/hotspot/test/
>>> gc/g1/JTwork/classes/test/lib:/home/fa/hs-int/test/lib:/home
>>> /fa/jtreg/lib/javatest.jar:/home/fa/jtreg/lib/jtreg.jar -XX:+UseG1GC
>>> -Xms128M -Xmx128M -Xmn2M -XX:G1HeapRegionSize=1M
>>> -XX:InitiatingHeapOccupancyPercent=0 -Xlog:gc
>>> -XX:+UnlockDiagnosticVMOptions -XX:+VerifyAfterGC *-XX:ConcGCThreads=1*
>>> -XX:+IgnoreUnrecognizedVMOptions -XX:+G1VerifyBitmaps
>>> ​​
>>> ReclaimRegionFast ]
>>> ...
>>> All the VM options are passed as expected.
>>>
>>> > I have confirmed this through prints in the JVM code base.
>>> I'm not sure what do you mean here, but I guess you did something wrong.
>>>
>>> Please note, during execution of this test two JVM are launched:
>>> - the first one started by jtreg (TestEagerReclaimHumongousRegionsClearMarkBits
>>> class)
>>> - the second started by test (ReclaimRegionFast class)
>>>
>>> In the first one
>>> ​​
>>> ConcGCThread should be set to 0.
>>>
>>> Thanks,
>>> Dima
>>>
>>> On 18.04.2017 3:09, Ram Krishnan wrote:
>>>
>>> Hi Jenny,
>>>
>>> I tried what you suggested. Hotspot output indeed shows ​ConcGCThreads
>>> as 1.
>>>
>>> The problem seems to be interaction with jtreg.
>>>
>>> Thanks,
>>> Ramki
>>>
>>> On Mon, Apr 17, 2017 at 4:49 PM, Jenny Zhang <yu.zhang at oracle.com>
>>> wrote:
>>>
>>>> Ramki,
>>>>
>>>> Can you do the following to be sure that hotspot did not take the
>>>> parameter?
>>>> java -XX:
>>>> ​​
>>>> ConcGCThreads=1 -XX:+PrintFlagsFinal
>>>>
>>>> I am using jdk9b154, the output shows it changed the ConcGCThreads to 1
>>>>
>>>> Thanks
>>>> Jenny
>>>>
>>>> On 4/17/2017 4:33 PM, Ram Krishnan wrote:
>>>>
>>>> Many thanks Jonathan for the immediate reply.
>>>>
>>>> I am copying the hotspot gc team.
>>>>
>>>> Hotspot gc team -- your help would be much appreciated on the topic
>>>> below.
>>>>
>>>> Thanks,
>>>> Ramki
>>>>
>>>> On Mon, Apr 17, 2017 at 2:29 PM, Jonathan Gibbons <
>>>> jonathan.gibbons at oracle.com> wrote:
>>>>
>>>>>
>>>>>
>>>>> On 04/17/2017 02:18 PM, Ram Krishnan wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> I have been able to successfully run all the tests in
>>>>> hotspot/test/gc/g1 using jtreg.
>>>>>
>>>>> The only gotcha I am facing is that the JVM startup options specified
>>>>> in process builder does not have any effect. I have confirmed this through
>>>>> prints in the JVM code base.
>>>>>
>>>>> For example,
>>>>> ​/hotspot/test/gc/g1/​ TestEagerReclaimHumongousRegionsClearMarkBits.java
>>>>> modifies the "-XX:ConcGCThreads=1", but inside the JVM code to value of
>>>>> ConcGCThreads is still zero.
>>>>>
>>>>> ​I am new to jtreg and openjdk and probably missing something obvious.
>>>>> Your help would be much appreciated.
>>>>>
>>>>> Thanks in advance,​
>>>>> ​Ramki​
>>>>>
>>>>>
>>>>> Ramki,
>>>>>
>>>>> This does not look like an issue with jtreg, since the behavior you
>>>>> are apparently seeing is all within the test code and its libraries.
>>>>>
>>>>> You might want to follow up with the Hotspot team, who would have more
>>>>> familiarity with these tests and the associated libraries.
>>>>>
>>>>> -- Jon
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Thanks,
>>>> Ramki
>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Thanks,
>>> Ramki
>>>
>>>
>>>
>>
>>
>> --
>> Thanks,
>> Ramki
>>
>>
>>
>
>
> --
> Thanks,
> Ramki
>
>
>


-- 
Thanks,
Ramki
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