Messages in this thread | | | Date | Tue, 29 Oct 2013 21:54:41 +0200 | Subject | Re: Re: [PATCH v4 2/3] Support for perf to probe into SDT markers: | From | Pekka Enberg <> |
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On Tue, Oct 29, 2013 at 4:51 PM, Mark Wielaard <mjw@redhat.com> wrote: > A nice user case to think about when designing this interface might be > the java hotspot jvm (libjvm.so). It has SDT markers with the same name > that might occur at multiple addresses depending on code path taken or > compiler optimization. And there are multiple libjvm.so variants > depending on whether the user uses the client or server VM. And users > often have multiple major versions installed (both 1.6 and 1.7 are > currently being shipped by some distros and can be installed in > parallel). > > Normally a user that wants to monitor say the hotspot:gc__begin SDT > probe wants to see that probe in whatever code path it happens and in > whatever libjvm.so happens to be running (client or server and 1.6 or > 1.7 version). But might still want to be able to specify a specific > variant.
Agreed, it's an excellent use case.
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