Troubles with Shenandoah

Roman Kennke rkennke at redhat.com
Sun Apr 7 14:54:56 UTC 2019


Oh apparently it has trobles to print anything to the terminal. I can
get it to start by blindly pressing enter a few times ;-) Duh.

Roman

I am getting an exception like this on the server side, do you also see
it?

https://paste.fedoraproject.org/paste/uTRDekos5uPbU7bojMK45g

Roman


> Am Sonntag, den 07.04.2019, 16:46 +0200 schrieb Roman Kennke:
> I am trying with the development version of Shenandoah in jdk/jdk.
> Even
> with other GCs, I don't even get it to prompt for parameters as
> described in the docs. It seems to start up and then hang or wait for
> something. I used the latest cometd download.
> 
> Roman
> 
> Hi,
> > On Sun, Apr 7, 2019 at 2:50 PM Aleksey Shipilev <shade at redhat.com>
> > wrote:
> > > On 4/7/19 2:41 PM, Simone Bordet wrote:
> > > > I have 2 questions:
> > > > 
> > > > A) is the version I'm using a "stable" enough version (it's
> > > > this
> > > > one:
> > > > https://builds.shipilev.net/openjdk-jdk12/openjdk-jdk12-latest-linux-x86_64-release.tar.xz)
> > > 
> > > That is basically 12u bleeding edge for testing, and it might be
> > > broken. The releases that ship by
> > > major vendors are usually much more stable.
> > 
> > Found at AdoptOpenJDK the stable one, but the problem still occurs.
> > I have added -XX:+ShenandoahVerify, I see no crashes and typical
> > output is:
> > 
> > [2019-04-07T09:13:01.120-0500][info][gc,start      ] GC(15) Verify
> > After Updating References, Level 4
> > [2019-04-07T09:13:01.257-0500][info][gc            ] GC(15) Verify
> > After Updating References, Level 4 (6178264 reachable, 192 marked)
> > 
> > Not sure if it's correct.
> > 
> > Trying now with -XX:ShenandoahGCHeuristics=passive.
> > 



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