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From: "wcohen at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug runtime/24416] Tests stuck in uprobes_onthefly.exp
Date: Fri, 05 Apr 2019 16:00:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D24416

--- Comment #3 from William Cohen <wcohen at redhat dot com> ---
There looks to be some very hot tracepoints that are only appearing on the
fedora x86 5.0.x kernels that do not appear on rhel7 x86 or aarch64.  Follow
was run for only a short time:

$ sudo stap -ve 'global counts probe kernel.trace("*"){counts[pp()] <<< 1}'
Pass 1: parsed user script and 492 library scripts using
388652virt/161896res/9176shr/152916data kb, in 320usr/130sys/464real ms.
Pass 2: analyzed script: 758 probes, 1 function, 0 embeds, 1 global using
401280virt/175916res/10224shr/165544data kb, in 140usr/450sys/602real ms.
Pass 3: translated to C into
"/tmp/stapLJpHud/stap_7678d191c1a6333683c0dfbeb77bd4b6_207067_src.c" using
401792virt/176236res/10288shr/166056data kb, in 20usr/0sys/27real ms.
Pass 4: compiled C into "stap_7678d191c1a6333683c0dfbeb77bd4b6_207067.ko" in
44040usr/14440sys/60733real ms.
Pass 5: starting run.
^Ccounts["kernel.trace("lock:lock_release")"] @count=3D142050 @min=3D1 @max=
=3D1
@sum=3D142050 @avg=3D1
counts["kernel.trace("lock:lock_acquire")"] @count=3D142050 @min=3D1 @max=
=3D1
@sum=3D142050 @avg=3D1
counts["kernel.trace("lock:lock_acquired")"] @count=3D54136 @min=3D1 @max=
=3D1
@sum=3D54136 @avg=3D1
counts["kernel.trace("preemptirq:irq_enable")"] @count=3D53906 @min=3D1 @ma=
x=3D1
@sum=3D53906 @avg=3D1
counts["kernel.trace("preemptirq:irq_disable")"] @count=3D53906 @min=3D1 @m=
ax=3D1
@sum=3D53906 @avg=3D1
counts["kernel.trace("rcu:rcu_utilization")"] @count=3D6894 @min=3D1 @max=
=3D1
@sum=3D6894 @avg=3D1
counts["kernel.trace("msr:write_msr")"] @count=3D6275 @min=3D1 @max=3D1 @su=
m=3D6275
@avg=3D1
...

--=20
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