On Sun, 19 Nov 2023 05:12:50 GMT, Serguei Spitsyn wrote:
>> The handshakes support for virtual threads is needed to simplify the JVMTI
>> implementation for virtual threads. There is a significant duplication in
>> the JVMTI code to differentiate code intended to support platform, virtual
>> t
On Wed, 1 Nov 2023 18:44:04 GMT, Serguei Spitsyn wrote:
> The handshakes support for virtual threads is needed to simplify the JVMTI
> implementation for virtual threads. There is a significant duplication in the
> JVMTI code to differentiate code intended to support platform, virtual
> thread
Hi,
Just going back to a technical point, did you manage to capture a stacktrace
from the hang when running with -XX:OnError="jcmd %p GC.heap_dump -overwrite
filename.dmp"
It would be great to know if that is a reliable hang, and what it looks like.
Maybe gclocker should not be blocking us at
This test fails occasionally, and can be tuned to avoid most of the failures
ever seen.
It exists to check that notification work does not scale linearly with number
of MBeans, so it calculates a ratio of the time taken with one, and with 20,000
MBeans.
We should increase point at which that c
CCing to serviceability group.
Do we still support dtrace?
Thanks,
Vladimir K
On 11/21/23 4:34 AM, Thomas Stüfe wrote:
Hi,
It seems that the handling of DTraceMethodProbes is inconsistent: in most places, we handle the flag at runtime by
generating code that uses conditional jumps. In one pl
Problemlisting ConcAttachTest.java on OSX (it's already problem listed on linux
and doesn't get run on Windows). This one test seems to be causing all the
issues with attach and dcmd tests described in
[JDK-8318866](https://bugs.openjdk.org/browse/JDK-8318866), so if we problem
list it we shoul
On Fri, 22 Sep 2023 02:48:57 GMT, David Holmes wrote:
>> `jcmd Compiler.perfmap` uses the hard-coded file name for a perf map:
>> `/tmp/perf-%d.map`. This change adds an option for specifying a file name.
>>
>> The help message of Compiler.perfmap:
>>
>> Compiler.perfmap
>> Write map file for
On Thu, 21 Sep 2023 20:43:56 GMT, Yi-Fan Tsai wrote:
> `jcmd Compiler.perfmap` uses the hard-coded file name for a perf map:
> `/tmp/perf-%d.map`. This change adds an option for specifying a file name.
>
> The help message of Compiler.perfmap:
>
> Compiler.perfmap
> Write map file for Linux pe
> 8315149: Add hsperf counters for CPU time of internal GC threads
Jonathan Joo has updated the pull request incrementally with two additional
commits since the last revision:
- Update memory tracking type for CPUTimeCounters
- Fix assertion logic
-
Changes:
- all: https://git.
On Tue, 21 Nov 2023 21:42:39 GMT, Jonathan Joo wrote:
>> 8315149: Add hsperf counters for CPU time of internal GC threads
>
> Jonathan Joo has updated the pull request incrementally with two additional
> commits since the last revision:
>
> - Update memory tracking type for CPUTimeCounters
>
On Tue, 21 Nov 2023 20:16:39 GMT, Chris Plummer wrote:
> Problemlisting ConcAttachTest.java on OSX (it's already problem listed on
> linux and doesn't get run on Windows). This one test seems to be causing all
> the issues with attach and dcmd tests described in
> [JDK-8318866](https://bugs.op
> `jcmd Compiler.perfmap` uses the hard-coded file name for a perf map:
> `/tmp/perf-%d.map`. This change adds an option for specifying a file name.
>
> The help message of `jcmd PID help Compiler.perfmap` will be updated in a
> separate PR.
Yi-Fan Tsai has updated the pull request incrementall
On Mon, 20 Nov 2023 00:59:35 GMT, David Holmes wrote:
>> @dcubed-ojdk
>> I don't know FJP implementation well enough to point at the code where it
>> happens. However, I observe that new `JavaThread `is being created between
>> two points of the execution path.
>> - First point is in the `Jvmt
On Mon, 20 Nov 2023 19:28:13 GMT, Jiangli Zhou wrote:
>> Please review JvmtiThreadState::state_for_while_locked change to handle the
>> state->get_thread_oop() null case. Please see
>> https://bugs.openjdk.org/browse/JDK-8319935 for details.
>
> Jiangli Zhou has updated the pull request increme
> `jcmd Compiler.perfmap` uses the hard-coded file name for a perf map:
> `/tmp/perf-%d.map`. This change adds an option for specifying a file name.
>
> The help message of `jcmd PID help Compiler.perfmap` will be updated in a
> separate PR.
Yi-Fan Tsai has updated the pull request incrementall
On Mon, 20 Nov 2023 19:28:13 GMT, Jiangli Zhou wrote:
>> Please review JvmtiThreadState::state_for_while_locked change to handle the
>> state->get_thread_oop() null case. Please see
>> https://bugs.openjdk.org/browse/JDK-8319935 for details.
>
> Jiangli Zhou has updated the pull request increme
On 22/11/2023 3:09 am, Vladimir Kozlov wrote:
CCing to serviceability group.
Do we still support dtrace?
A qualified "yes" - the hooks still exist, mainly for systemTap IIRC but
we don't actively update or maintain anything so I expect there is some
bitrot.
Thanks,
Vladimir K
On 11/21/23
On Fri, 17 Nov 2023 02:51:03 GMT, Jiangli Zhou wrote:
>> Jiangli Zhou has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Don't try to setup_jvmti_thread_state for obj allocation sampling if the
>> current thread is attaching from native an
On Mon, 20 Nov 2023 19:28:13 GMT, Jiangli Zhou wrote:
>> Please review JvmtiThreadState::state_for_while_locked change to handle the
>> state->get_thread_oop() null case. Please see
>> https://bugs.openjdk.org/browse/JDK-8319935 for details.
>
> Jiangli Zhou has updated the pull request increme
On Mon, 20 Nov 2023 21:48:11 GMT, Coleen Phillimore wrote:
>> The method holder is an `InstanceKlass` object which can be retrieved as
>> `method->method_holder()` (I apologize if I am using not completely correct
>> terms - this is what I grokked from the sources). And incomplete methods
>> c
On Tue, 14 Nov 2023 17:56:09 GMT, Jaroslav Bachorik
wrote:
> Please, review this fix for a corner case handling of `jmethodID` values.
>
> The issue is related to the interplay between `jmethodID` values and method
> redefinitions. Each `jmethodID` value is effectively a pointer to a `Method`
On Tue, 21 Nov 2023 21:42:39 GMT, Jonathan Joo wrote:
>> 8315149: Add hsperf counters for CPU time of internal GC threads
>
> Jonathan Joo has updated the pull request incrementally with two additional
> commits since the last revision:
>
> - Update memory tracking type for CPUTimeCounters
>
On Tue, 21 Nov 2023 22:45:54 GMT, Serguei Spitsyn wrote:
>> Jiangli Zhou has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Add a check for a thread is_attaching_via_jni, based on David Holmes'
>> comment.
>
> src/hotspot/share/prims/jvmti
On Tue, 21 Nov 2023 20:16:39 GMT, Chris Plummer wrote:
> Problemlisting ConcAttachTest.java on OSX (it's already problem listed on
> linux and doesn't get run on Windows). This one test seems to be causing all
> the issues with attach and dcmd tests described in
> [JDK-8318866](https://bugs.op
24 matches
Mail list logo
