On 24/10/2018 8:30 AM, dean.l...@oracle.com wrote:
On 10/23/18 2:51 PM, David Holmes wrote:
Hi Dean,
On 24/10/2018 4:05 AM, dean.l...@oracle.com wrote:
On 10/23/18 9:46 AM, dean.l...@oracle.com wrote:
On 10/22/18 3:31 PM, David Holmes wrote:
Sorry Dean I'm concerned about a thread
On 10/23/18 3:30 PM, dean.l...@oracle.com wrote:
On 10/23/18 2:51 PM, David Holmes wrote:
OK, but even if the regular benchmarks don't show a difference, I'd
feel better if microbenchmarks were not affected. What if I go
back to the original approach and add locking:
static jlong
Okay, thanks!
Serguei
On 10/23/18 4:58 PM, David Holmes wrote:
I should have looked further before sending this. Many threads are in
smr_delete.
David
On 24/10/2018 9:56 AM, David Holmes wrote:
Hi Serguei, Robbin,
One thing I noticed which Robbin should be able to expand upon is
that
I should have looked further before sending this. Many threads are in
smr_delete.
David
On 24/10/2018 9:56 AM, David Holmes wrote:
Hi Serguei, Robbin,
One thing I noticed which Robbin should be able to expand upon is that
Thread 101 is terminating and has called
Hi Serguei, Robbin,
One thing I noticed which Robbin should be able to expand upon is that
Thread 101 is terminating and has called ThreadsSMRSupport::smr_delete
and is blocked here:
// Wait for a release_stable_list() call before we check again. No
// safepoint check, no timeout, and not
Please, skip it - sorry for the noise.
It is hard to prove anything with current dump.
Thanks,
Serguei
On 10/23/18 9:09 AM, serguei.spit...@oracle.com wrote:
Hi David and Robbin,
I have an idea that needs to be checked.
It can be almost the same deadlock scenario that I've already
explained
Hi David and Robbin,
On 10/23/18 7:38 AM, Robbin Ehn wrote:
Hi,
On 10/23/18 10:34 AM, David Holmes wrote:
Hi Serguei,
The VMThread is executing VM_HandshakeAllThreads which is not a
safepoint operation. There's no real way to tell from the stacks what
it's stuck on.
Good point.
We
On 10/23/18 2:51 PM, David Holmes wrote:
Hi Dean,
On 24/10/2018 4:05 AM, dean.l...@oracle.com wrote:
On 10/23/18 9:46 AM, dean.l...@oracle.com wrote:
On 10/22/18 3:31 PM, David Holmes wrote:
Sorry Dean I'm concerned about a thread termination bottleneck with
this. A simple microbenchmark
Hi Dean,
On 24/10/2018 4:05 AM, dean.l...@oracle.com wrote:
On 10/23/18 9:46 AM, dean.l...@oracle.com wrote:
On 10/22/18 3:31 PM, David Holmes wrote:
Sorry Dean I'm concerned about a thread termination bottleneck with
this. A simple microbenchmark that creates 500,000 threads that have
to
Hi Paul,
I looked at the code in detail, and didn't find any major problem. A
few small issues below. I'm not a Reviewer, though.
File Separator--
In
Hi Gary,
This change looks OK to me.
Bets regards,
Daniil
On 10/23/18, 11:08 AM, "serviceability-dev on behalf of Gary Adams"
wrote:
Could I get a second reviewer for this change.
On 10/15/18, 3:16 PM, Chris Plummer wrote:
> Hi Gary,
>
> I think the simple prompt is
Hi Gary,
Looks good to me (not an official reviewer though),
Jc
On Tue, Oct 23, 2018 at 11:08 AM Gary Adams wrote:
> Could I get a second reviewer for this change.
>
> On 10/15/18, 3:16 PM, Chris Plummer wrote:
> > Hi Gary,
> >
> > I think the simple prompt is meant to indicate that execution
Could I get a second reviewer for this change.
On 10/15/18, 3:16 PM, Chris Plummer wrote:
Hi Gary,
I think the simple prompt is meant to indicate that execution is
suspended, but there is no current thread. I don't think that is the
case here, so probably best not to use your alternate
On 10/23/18 9:46 AM, dean.l...@oracle.com wrote:
On 10/22/18 3:31 PM, David Holmes wrote:
Sorry Dean I'm concerned about a thread termination bottleneck with
this. A simple microbenchmark that creates 500,000 threads that have
to run and terminate, shows a 15+% slowdown on my Linux box. I
On 10/22/18 3:31 PM, David Holmes wrote:
Sorry Dean I'm concerned about a thread termination bottleneck with
this. A simple microbenchmark that creates 500,000 threads that have
to run and terminate, shows a 15+% slowdown on my Linux box. I tried
to find some kind of real benchmarks that
Hi David and Robbin,
I have an idea that needs to be checked.
It can be almost the same deadlock scenario that I've already explained
but more sophisticated.
I suspect a scenario with JvmtiThreadState_lock that the flag
Monitor::_safepoint_check_always does not help much.
It can be verified by
Thanks for filing the new RFEs!
Paul
From: JC Beyler
Date: Tuesday, October 23, 2018 at 7:49 AM
To: "Hohensee, Paul"
Cc: "serguei.spit...@oracle.com" ,
"serviceability-dev@openjdk.java.net"
Subject: Re: RFR (M) 8212771: Remove remaining spaces before/after () for
vmTestbase
Hi Paul,
Hi,
On 10/23/18 10:34 AM, David Holmes wrote:
Hi Serguei,
The VMThread is executing VM_HandshakeAllThreads which is not a safepoint
operation. There's no real way to tell from the stacks what it's stuck on.
I cannot find a thread that is not considered safepoint safe or is_ext_suspended
Hi Paul,
sorry for the long wait.
On Mon, 2018-10-08 at 23:49 +, Hohensee, Paul wrote:
> Bug: https://bugs.openjdk.java.net/browse/JDK-8196989
> CSR: https://bugs.openjdk.java.net/browse/JDK-8196991
> Webrev: http://cr.openjdk.java.net/~phh/8196989/webrev.02/
Note that I reviewed the
Thanks for checking.
I think it is Ok if the tests are only supported in the default locale.
I think that restriction should be documented somewhere.
If there is a simple way to check at runtime, we could
issue a warning message.
Definitely out of scope for this specific changeset.
I wonder if
Hi Serguei,
The VMThread is executing VM_HandshakeAllThreads which is not a
safepoint operation. There's no real way to tell from the stacks what
it's stuck on.
David
On 23/10/2018 5:58 PM, serguei.spit...@oracle.com wrote:
Hi David,
You are right, thanks.
It means, this deadlock needs
Hi Serguei,
The JvmtiThreadState_lock is always acquired with safepoint checks
enabled, so all JavaThreads blocked trying to acquire it will be
_thread_blocked and so safepoint-safe and so won't be holding up the
safepoint.
David
On 23/10/2018 5:21 PM, serguei.spit...@oracle.com wrote:
Hi,
I've added the seviceability-dev mailing list.
It can be interesting for the SVC folks. :)
On 10/22/18 22:14, Leonid Mesnik wrote:
Hi
Seems last version also crashes with 2
other
23 matches
Mail list logo
