> This update fixes two important issues:
> - Issue reported by a bug submitter about missing JVMTI events on virtual
> threads after an a JVMTI agent dynamic attach
> - Known scalability/performance issue: a need to lazily create
> `JvmtiThreadState's` for virtual threads
>
> The issue is tr
Hi,
It would be a shame to lose these metrics because many of them have been very
useful over time and some would be even more useful with some modifications.
For example, the CPU breakouts found in GC logs has been incredibly useful as a
proxy measure in helping sort out other issues in system
On Thu, 7 Sep 2023 00:56:40 GMT, Alex Menkov wrote:
> The fix looks good to me in general, but I'm not sure about code
> organization. src/hotspot/share/runtime/os.hpp describes rules for os* files.
> It states: // Platform-independent source files should not include these
> header files // (a
> This patch reduce ~16%(24s->20s) pahse 2 merge time during dumping 32g heap
> with 96threads and fixes a memory leak of compressor
>
> You might argue why this is Linux-only optimization, because sendfile
> requires at least socket fd in other platforms([aix
> sendfile](https://www.ibm.com/do
> To test ForceEarlyReturn command for NO_MORE_FRAMES case the test creates
> ThreadStartEventRequest with SUSPEND_ALL policy and requests debuggee to
> start new thread.
> If debuggee JVM starts some internal threads before the request is cleared
> (i.e. we have several ThreadStart events), 2nd
On Fri, 11 Aug 2023 09:31:56 GMT, Yi Yang wrote:
> This patch reduce ~16%(24s->20s) pahse 2 merge time during dumping 32g heap
> with 96threads and fixes a memory leak of compressor
>
> You might argue why this is Linux-only optimization, because sendfile
> requires at least socket fd in other
On Wed, 6 Sep 2023 20:02:44 GMT, Alex Menkov wrote:
> To test ForceEarlyReturn command for NO_MORE_FRAMES case the test creates
> ThreadStartEventRequest with SUSPEND_ALL policy and requests debuggee to
> start new thread.
> If debuggee JVM starts some internal threads before the request is cle
To test ForceEarlyReturn command for NO_MORE_FRAMES case the test creates
ThreadStartEventRequest with SUSPEND_ALL policy and requests debuggee to start
new thread.
If debuggee JVM starts some internal threads before the request is cleared
(i.e. we have several ThreadStart events), 2nd event sus
On Tue, 29 Aug 2023 10:09:21 GMT, Serguei Spitsyn wrote:
> This update fixes two important issues:
> - Issue reported by a bug submitter about missing JVMTI events on virtual
> threads after an a JVMTI agent dynamic attach
> - Known scalability/performance issue: a need to lazily create
> `J
On 06/09/2023 16:17, Volker Simonis wrote:
:
I'm familiar with JEP 260. But wouldn't you agree that an
"encapsulated" monitoring API is an oxymoron? A monitoring API is by
design intended for external usage and completely useless to the
platform itself. There's no single usage of the "sun.managem
On Wed, 6 Sep 2023 16:49:39 GMT, Chris Plummer wrote:
> > I wonder if this is the right thing to do for the hprof files. I believe
> > they originated from some hprof tools that we no longer ship. 3rd parties
> > might choose to integrate them into their own tools.
>
> Do you think I should re
On 9/6/23 8:17 AM, Volker Simonis wrote:
Anyway, if you classify the MBeans in "sun.management" as non-critical
internal APIs (with respect to JEP 260) but without any "internal"
usage, than we should really remove them, right, because an internal
API without any internal usage doesn't make any
On Wed, 6 Sep 2023 16:06:29 GMT, Erik Joelsson wrote:
> > I wonder if this is the right thing to do for the hprof files. I believe
> > they originated from some hprof tools that we no longer ship. 3rd parties
> > might choose to integrate them into their own tools.
>
> Do you think I should re
On Wed, 30 Aug 2023 09:23:55 GMT, Leo Korinth wrote:
>> Rename createJavaProcessBuilder so that it is not used by mistake instead of
>> createTestJvm.
>>
>> I have used the following sed script: `find -name "*.java" | xargs -n 1 sed
>> -i -e
>> "s/createJavaProcessBuilder(/createJavaProcessBu
On Tue, 5 Sep 2023 23:12:51 GMT, Chris Plummer wrote:
> I wonder if this is the right thing to do for the hprof files. I believe they
> originated from some hprof tools that we no longer ship. 3rd parties might
> choose to integrate them into their own tools.
Do you think I should revert them?
On Tue, 5 Sep 2023 22:49:41 GMT, Erik Joelsson wrote:
> There are a number of files in the `test` directory that have an incorrect
> copyright header, which includes the "classpath" exception text. This patch
> removes that text from all test files that I could find it in. I did this
> using a
> The `find` method now is
> ```C++
> template
> int find(T* token, bool f(T*, E)) const {
> ...
>
> Any other functions which use this are also changed.
> Local linux-x64-debug hotspot:tier1 passed. Mach5 tier1 build on linux and
> Windows passed.
Afshin Zafari has updated the pull request inc
> In the virtual thread implementation, thread identity switches to the carrier
> before freezing and switches back to the virtual thread after thawing. This
> was a forced move due to issues getting JVMTI to work with virtual threads.
> JVMTI can now hide events during transitions so we can inv
On Wed, Sep 6, 2023 at 3:47 PM Alan Bateman wrote:
>
> On 06/09/2023 14:02, Volker Simonis wrote:
> > :
> >
> > I wonder why "sun.management" was encapsulated in the first place? I
> > understand that it is not an "officially supported" API, but I find it
> > still quite useful.
> sun.management.*
On 06/09/2023 14:02, Volker Simonis wrote:
:
I wonder why "sun.management" was encapsulated in the first place? I
understand that it is not an "officially supported" API, but I find it
still quite useful.
sun.management.* is JDK internal so not something for code outside the
JDK to use directly
On Tue, 5 Sep 2023 22:49:41 GMT, Erik Joelsson wrote:
> There are a number of files in the `test` directory that have an incorrect
> copyright header, which includes the "classpath" exception text. This patch
> removes that text from all test files that I could find it in. I did this
> using a
Hi,
I recently looked for an easy way to get the CPU time spent by
JIT-compiler and GC threads in Java (e.g exported by IBM J9's
JvmCpuMonitorMXBean [0]). An easy way to achieve this is in OpenJDK is
by using the "sun.management.HotspotInternal" MBean which exports the
"sun.management:type=Hotspot
On Tue, 5 Sep 2023 22:49:41 GMT, Erik Joelsson wrote:
> There are a number of files in the `test` directory that have an incorrect
> copyright header, which includes the "classpath" exception text. This patch
> removes that text from all test files that I could find it in. I did this
> using a
On Wed, 6 Sep 2023 08:18:45 GMT, JoKern65 wrote:
> After push of [JDK-8307478](https://bugs.openjdk.org/browse/JDK-8307478) ,
> the following test started to fail on AIX :
> com/sun/tools/attach/warnings/DynamicLoadWarningTest.java;
> The problem was described in
> [JDK-8309549](https://bugs.op
After push of [JDK-8307478](https://bugs.openjdk.org/browse/JDK-8307478) , the
following test started to fail on AIX :
com/sun/tools/attach/warnings/DynamicLoadWarningTest.java;
The problem was described in
[JDK-8309549](https://bugs.openjdk.org/browse/JDK-8309549) with a first try of
a fix.
A s
On Tue, 5 Sep 2023 23:15:53 GMT, Jonathan Gibbons wrote:
> One has to wonder about the `**/*_OLD.java` files, but that would be a
> different cleanup
The IBM double byte charsets were re-implemented in JDK 7. I think the old
implementations moved to the test tree so it could be used to test th
On Mon, 4 Sep 2023 14:18:55 GMT, Roman Marchenko wrote:
> This change added a simple check in
> test/hotspot/jtreg/serviceability/sa/ClhsdbDumpclass.java if BootstrapMethods
> attribute was dumped. (similar to test changes in PR #14556)
This pull request has now been integrated.
Changeset: a2
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