Hi Tony, I think delivering this information, available via logging, could be useful. Be happy to assist where I can.
Kind regards, Kirk > On Oct 14, 2019, at 11:23 AM, Tony Printezis <tprinte...@twitter.com> wrote: > > Hi Mandy, > > Thanks for the response! I hope you’re well! > > We’d like to be able to get safepoint stats from within the JVM so we can > post them to our observability system. Would creating a Bean (a la > GarbageCollectorMXBean) that exposes this info make sense? I’d be happy to > work on it if there’s interest. Would you recommend an alternative method? > > Tony > > > ————— > Tony Printezis | @TonyPrintezis | tprinte...@twitter.com > <mailto:tprinte...@twitter.com> > > > On October 14, 2019 at 12:49:57 PM, Mandy Chung (mandy.ch...@oracle.com > <mailto:mandy.ch...@oracle.com>) wrote: > >> jdk.internal.jvmstat is JDK internal unsupported API. jstat and jcmd >> monitors the JVM statistics that you can use but I think they don't show the >> safepoint counters by default. >> >> Mandy >> >> On 10/14/19 8:25 AM, Tony Printezis wrote: >>> Is jvmstat a public / supported API? The jdk.internal.jvmstat module >>> doesn’t seem to be exporting anything publicly (and it also has “internal” >>> in its name). >>> >>> Tony >>> >>> >>> ————— >>> Tony Printezis | @TonyPrintezis | tprinte...@twitter.com >>> <mailto:tprinte...@twitter.com> >>> >>> >>> On October 11, 2019 at 11:10:18 PM, Yasumasa Suenaga >>> (suen...@oss.nttdata.com <mailto:suen...@oss.nttdata.com>) wrote: >>> >>>> Hi, >>>> >>>> AFAIK the API for them does not provided, but we can use reader class for >>>> hsperfdata >>>> in jdk.internal.jvmstat module. >>>> Examples are available on my GitHub: >>>> >>>> https://github.com/YaSuenag/perfreader >>>> <https://github.com/YaSuenag/perfreader> >>>> >>>> You can get safepoint statistics via sun.rt.safepoint* in hsperfdata. >>>> >>>> >>>> Yasumasa >>>> >>>> >>>> On 2019/10/12 10:30, Hohensee, Paul wrote: >>>> > I don’t know of any. Also, it appears that there are no uses of any of >>>> > the HotspotRuntimeMBean methods in the JDK, so it could actually be >>>> > removed! If you want to add its methods to a public interface, I’d >>>> > create com.sun.management.RuntimeMXBean by analogy to c.s.m.ThreadMXBean >>>> > and use the supported/enabled approach of *ThreadAllocatedBytes*. Needs >>>> > a CSR, of course. >>>> > >>>> > Paul >>>> > >>>> > *From: *serviceability-dev <serviceability-dev-boun...@openjdk.java.net >>>> > <mailto:serviceability-dev-boun...@openjdk.java.net>> on behalf of Tony >>>> > Printezis <tprinte...@twitter.com <mailto:tprinte...@twitter.com>> >>>> > *Date: *Friday, October 11, 2019 at 1:45 PM >>>> > *To: *"serviceability-dev@openjdk.java.net >>>> > <mailto:serviceability-dev@openjdk.java.net>" >>>> > <serviceability-dev@openjdk.java.net >>>> > <mailto:serviceability-dev@openjdk.java.net>> >>>> > *Subject: *Safepoint Bean? >>>> > >>>> > Hi there, >>>> > >>>> > Is there a standard MBean (similar to GarbageCollectorMXBean), or other >>>> > mechanism, that can be used to get safepoint statistics from Java >>>> > (count, time, etc.)? I know it’s possible to get that info from >>>> > sun.management.HotspotRuntime.java, but I assume this is not a publicly >>>> > accessible API any more? Is there a standard alternative? >>>> > >>>> > Thanks, >>>> > >>>> > Tony >>>> > >>>> > ————— >>>> > >>>> > Tony Printezis | @TonyPrintezis | tprinte...@twitter.com >>>> > <mailto:tprinte...@twitter.com> <mailto:tprinte...@twitter.com >>>> > <mailto:tprinte...@twitter.com>> >>>> >
