https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198148
Bug ID: 198148
Summary: [hwpmc] pmcstat -G doesn't resolve symbols from
userland processes
Product: Base System
Version: 11.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
pmcstat -G doesn't seem to resolve symbols from userland processes correctly or
reliably. In almost every instance, running pmcstat -G on a log file just
plainly doesn't resolve anything that isn't a kernel symbol.
To reproduce:
* run some very CPU busy process with lots of threads and syscalls;
* run pmcstat -O to record events to a logfile;
* when you're done, try using pmcstat -R <file> -G to spit out the callgraph to
stdout.
Even if all of the events are process-spec, I see /just/ kernel events.
This happens on both -HEAD and -10.
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