On Wed, 21 May 2025 20:35:33 GMT, Alex Menkov wrote:
> The change fixes "Thread.print" diagnostic command when mounted virtual
> thread is waiting on the class initialization monitor.
>
> Testing: new test, tier1 sanity run
To me, in the pinned case, both threads are "really waiting". The carr
On Tue, 29 Apr 2025 13:04:15 GMT, PAWAN CHAWDHARY wrote:
> 8352926: New test TestDockerMemoryMetricsSubgroup.java fails
This pull request has now been integrated.
Changeset: 9ca1004e
Author:pawan chawdhary
Committer: Mikhailo Seledtsov
URL:
https://git.openjdk.org/jdk/commit/9ca100
> Hi,
>
> The constant pool currently has a lot of methods specific to extracting
> parts of the operands array. What this array actually is, is a sequence of
> bootstrap method attribute entries, where each entry has the following
> components:
>
> ```c++
> struct BSMAE {
> u2 bootstrap_me
> Hello,
>
> The goal of this RFE is to separate Metaspace printing from GC printing. The
> main reason Metaspace and GC printing is coupled the way it is right now is
> because historically, the permanent generation (PermGen), which was replaced
> by Metaspace, was part of the GC heap. Hence,
> Hi everyone,
>
> This change removes the legacy `PerfData` sampling mechanism implemented
> through the `StatSampler` — an always-on periodic task that runs every 50ms
> my default. The sampling feature was originally introduced to collect
> performance counters and timestamps, but has since
On Wed, 21 May 2025 13:48:07 GMT, Johan Sjölen wrote:
> It seems like there's no user-visible change, except the removal of the
> global variable. Is that correct?
Besides the global variable, there's a slight change in the behaviour of the
perfdata-counters for Serial/Parallel, as mentioned i
On Wed, 21 May 2025 17:28:12 GMT, Lois Foltan wrote:
>> Johan Sjölen has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Lois's comments
>
> src/hotspot/share/oops/constantPool.hpp line 80:
>
>> 78: };
>> 79:
>> 80: class BSMAttributeEntry
On Thu, 22 May 2025 17:52:41 GMT, Johan Sjölen wrote:
>> Hi,
>>
>> The constant pool currently has a lot of methods specific to extracting
>> parts of the operands array. What this array actually is, is a sequence of
>> bootstrap method attribute entries, where each entry has the following
>
On Thu, 15 May 2025 11:47:07 GMT, Joel Sikström wrote:
>> Hello,
>>
>> The goal of this RFE is to separate Metaspace printing from GC printing. The
>> main reason Metaspace and GC printing is coupled the way it is right now is
>> because historically, the permanent generation (PermGen), which
On Wed, 21 May 2025 20:17:09 GMT, Alex Menkov wrote:
> The change fixes failure of
> vmTestbase/nsk/jvmti/AttachOnDemand/attach045/TestDescription.java test.
> The test was problem-listed in jdk 11 due intermittent timeouts, but in
> jdk15-16 changes in nsk framework made the test fail 100% (it
> Improve warm-up time by making profile data from a previous run of an
> application instantly available, when the HotSpot Java Virtual Machine
> starts. Specifically, enhance the [AOT cache](https://openjdk.org/jeps/483)
> to store method execution profiles from training runs, reducing profili
On Thu, 22 May 2025 19:50:44 GMT, Leonid Mesnik wrote:
> As I understand, this fix is not related to timeout. So test is going to
> fail. It might be makes a sense to remove it from problemlist to see how it
> works. However better to rename PR summary.
Oh, right. It's socket timeout, not the
On Thu, 22 May 2025 19:51:43 GMT, Leonid Mesnik wrote:
>> The change fixes failure of
>> vmTestbase/nsk/jvmti/AttachOnDemand/attach045/TestDescription.java test.
>> The test was problem-listed in jdk 11 due intermittent timeouts, but in
>> jdk15-16 changes in nsk framework made the test fail 10
On Wed, 14 May 2025 14:29:23 GMT, Magnus Ihse Bursie wrote:
> After we converted the source base to be fully UTF-8, we do not need to use
> unicode sequences (like \u0123) in string literals. Sometimes, that might
> still make sense, as for control characters, non-breaking space, etc. But for
On Wed, 21 May 2025 20:35:33 GMT, Alex Menkov wrote:
> The change fixes "Thread.print" diagnostic command when mounted virtual
> thread is waiting on the class initialization monitor.
>
> Testing: new test, tier1 sanity run
At the moment class initialization in a vthread pins the carrier so I'
On Thu, 22 May 2025 09:44:01 GMT, David Holmes wrote:
> At the moment class initialization in a vthread pins the carrier so I'm not
> sure why this is considered a problem??
The output is confusing as it prints the "waiting on the Class initialization
monitor for XXX" twice. It makes it looks
On Mon, 19 May 2025 17:06:09 GMT, Johannes Bechberger
wrote:
>> This is the code for the [JEP 509: CPU Time based profiling for
>> JFR](https://openjdk.org/jeps/509).
>>
>> Currently tested using [this test
>> suite](https://github.com/parttimenerd/basic-profiler-tests). This runs
>> profile
> This optimization is a followup to https://github.com/openjdk/jdk/pull/24290
> trying to reduce the performance regression in some scenarios introduced in
> https://bugs.openjdk.org/browse/JDK-8292818 . Based both on performance and
> memory consumption it is a (better) alternative to
> https
On Wed, 21 May 2025 15:11:29 GMT, Ioi Lam wrote:
>> Even if the fields are only defined within the same class, the names of the
>> fields are shared among different classes.
>
> To validate that you have sorted the table correctly, you should add a
> debug-only validation function. This functio
On Wed, 21 May 2025 21:37:07 GMT, Roger Riggs wrote:
>> There are several locations in the JDK source where `System.in` and
>> `FileDescriptor.in` is read with `InputStreamReader` and `Scanner` using the
>> default charset. As recommended by the recently merged
>> [JDK-8356420](https://bugs.op
On Thu, 15 May 2025 11:47:07 GMT, Joel Sikström wrote:
>> Hello,
>>
>> The goal of this RFE is to separate Metaspace printing from GC printing. The
>> main reason Metaspace and GC printing is coupled the way it is right now is
>> because historically, the permanent generation (PermGen), which
On Wed, 21 May 2025 20:56:31 GMT, Volkan Yazici wrote:
> There are several locations in the JDK source where `System.in` and
> `FileDescriptor.in` is read with `InputStreamReader` and `Scanner` using the
> default charset. As recommended by the recently merged
> [JDK-8356420](https://bugs.open
On Thu, 15 May 2025 11:47:07 GMT, Joel Sikström wrote:
>> Hello,
>>
>> The goal of this RFE is to separate Metaspace printing from GC printing. The
>> main reason Metaspace and GC printing is coupled the way it is right now is
>> because historically, the permanent generation (PermGen), which
On Thu, 22 May 2025 08:19:00 GMT, Thomas Stuefe wrote:
>> Joel Sikström has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> Update new order in tests
>
> src/hotspot/share/memory/metaspace/metaspaceDCmd.cpp line 62:
>
>> 60: void MetaspaceD
On Thu, 22 May 2025 11:58:37 GMT, David Holmes wrote:
> To me, in the pinned case, both threads are "really waiting". The carrier
> physically and the vthread "logically". This also indicates it is actually
> doing pinning.
The intended mental model has always been that the carrier is waiting
> Improve warm-up time by making profile data from a previous run of an
> application instantly available, when the HotSpot Java Virtual Machine
> starts. Specifically, enhance the [AOT cache](https://openjdk.org/jeps/483)
> to store method execution profiles from training runs, reducing profili
> 8354475: TestDockerMemoryMetricsSubgroup.java fails with exitValue = 1
PAWAN CHAWDHARY has updated the pull request with a new target base due to a
merge or a rebase. The pull request now contains three commits:
- Merge branch 'master' into 8354475
- Update TestDockerMemoryMetricsSubgroup.ja
On Thu, 22 May 2025 08:46:55 GMT, Joel Sikström wrote:
>> src/hotspot/share/memory/metaspace/metaspaceDCmd.cpp line 62:
>>
>>> 60: void MetaspaceDCmd::execute(DCmdSource source, TRAPS) {
>>> 61: MetaspaceUtils::print_on(output());
>>> 62:
>>
>> Okay, though arguably somewhat redundant with t
On Thu, 22 May 2025 08:48:47 GMT, Joel Sikström wrote:
>> test/hotspot/jtreg/serviceability/dcmd/gc/HeapInfoTest.java line 48:
>>
>>> 46: OutputAnalyzer output = executor.execute(cmd);
>>> 47: output.shouldNotContain("Unknown diagnostic command");
>>> 48: output.shouldHav
On Thu, 22 May 2025 19:49:17 GMT, Joel Sikström wrote:
>> Hello,
>>
>> The goal of this RFE is to separate Metaspace printing from GC printing. The
>> main reason Metaspace and GC printing is coupled the way it is right now is
>> because historically, the permanent generation (PermGen), which
> Hello,
>
> The goal of this RFE is to separate Metaspace printing from GC printing. The
> main reason Metaspace and GC printing is coupled the way it is right now is
> because historically, the permanent generation (PermGen), which was replaced
> by Metaspace, was part of the GC heap. Hence,
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