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.zh...@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.gibb...@oracle.com>jonathan.gibb...@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
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