On Fri, Jun 18, 2021, at 02:47, David Holmes wrote:
> On 18/06/2021 4:35 pm, Alan Bateman wrote:
> > On 17/06/2021 22:44, David Holmes wrote:
> >>
> >> I must admit I'm a bit confused about these implementation-specific
> >> MBeans. They are implementation-specific, so no part of the primary
> >>
On 18/06/2021 4:35 pm, Alan Bateman wrote:
On 17/06/2021 22:44, David Holmes wrote:
I must admit I'm a bit confused about these implementation-specific
MBeans. They are implementation-specific, so no part of the primary
java.management namespace, but they are provided so that they can be
use
On 17/06/2021 22:44, David Holmes wrote:
I must admit I'm a bit confused about these implementation-specific
MBeans. They are implementation-specific, so no part of the primary
java.management namespace, but they are provided so that they can be
used - so shutting them behind the modular door
On 17/06/2021 11:44 pm, Carter Kozak wrote:
On 17/06/2021 3:15 pm, Alan Bateman wrote:
> On 17/06/2021 02:39, David Holmes wrote:
>> In what way does this no longer work? We have a test in
>> jdk/sun/management/HotspotRuntimeMBean/GetTotalSafepointTime.java that
>> uses this API and doesn't s
On 17/06/2021 3:15 pm, Alan Bateman wrote:
> On 17/06/2021 02:39, David Holmes wrote:
>> In what way does this no longer work? We have a test in
>> jdk/sun/management/HotspotRuntimeMBean/GetTotalSafepointTime.java that
>> uses this API and doesn't seem to need to do anything to allow access. ??
> T
On 17/06/2021 3:15 pm, Alan Bateman wrote:
On 17/06/2021 02:39, David Holmes wrote:
In what way does this no longer work? We have a test in
jdk/sun/management/HotspotRuntimeMBean/GetTotalSafepointTime.java that
uses this API and doesn't seem to need to do anything to allow access. ??
That tes
On 17/06/2021 02:39, David Holmes wrote:
In what way does this no longer work? We have a test in
jdk/sun/management/HotspotRuntimeMBean/GetTotalSafepointTime.java that
uses this API and doesn't seem to need to do anything to allow access. ??
That test is compiled/run with `--add-exports
java.
Hi Carter,
On 17/06/2021 5:12 am, Carter Kozak wrote:
As java 16 and beyond lock down access to internal components by default, it
can be difficult to produce Prometheus-style metrics describing application
safepoints. I’ve been monitoring these metrics so that I can be alerted when an
applic
Thanks, Erik.
Is there any chance you could point me toward the documentation for the
jdk.Safepoint* events? It's difficult to tell at a glance if the sum of the
differences between the safepoint begin and end times is equivalent to
hotspotRuntimeManagementBean.getTotalSafepointTime(). Does tha
It's possible to access safepoint information using JFR, for example:
try (RecordingStream r = new RecordingStream()) {
r.enable("jdk.SafepointBegin");
r.enable("jdk.SafepointEnd");
r.onEvent("jdk.SafepointBegin", e -> System.out.println("begin: " +
e.getEndTime()));
r.onEvent("jdk.Safepo
As java 16 and beyond lock down access to internal components by default, it
can be difficult to produce Prometheus-style metrics describing application
safepoints. I’ve been monitoring these metrics so that I can be alerted when an
application spends more than ~10% of time in safepoints for som
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