maxactive(NNNN) usage

Frank Ch. Eigler fche@redhat.com
Mon Jan 6 16:46:00 GMT 2014


Jey Jay <rjayavrp2@gmail.com> writes:

> [...]
> Below is a sample script(maxactive included).
> [...]
> ----- probe hit report:
> kernel.function("vfs_read@fs/read_write.c:353").call,
> (maxactive05.stp:6:1), hits: 18, cycles: 0min/0avg/0max, from:
> kernel.function("vfs_read").call, index: 0

> But there is no response for .return. i.e I'm expecting
> printf("Testing.... Jay") statement to be executed. Any guidance
> will help me lot..  Jeyaram

This is working here on various Fedora/RHEL platforms and on various
systemtap versions.  Perhaps the data generated by stap-report might
help point a finger at a kernel or systemtap version or configuration
problem.

- FChE



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