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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1381805
Title:
'man perf-stat' has bad notation for specifying multiple events of
interest
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
The SYNOPSIS in the manpage of perf-stat(1) says:
perf stat [-e <EVENT> | --event=EVENT] [-a] <command>
where -e specifies events of interest:
-e, --event=
Select the PMU event. Selection can be a symbolic event name (use
perf list to list all events) or a raw PMU event
(eventsel+umask) in the form of rNNN where NNN is a hexadecimal
event descriptor.
Nowhere in the manpage does it say how to specify multiple events, or
even whether that is possible. A strict reading of the syntax would
suggest that it actually *isn't* possible.
Now, it's not hard to guess: either 'perf -e event1 -e event2 ...' or
'perf -e event1,event2' seems to work, but this should be specified
explicitly. Perhaps something like
-e, --event=
Select the PMU event. Selection can be a symbolic event name (use
perf list to list all events) or a raw PMU event
(eventsel+umask) in the form of rNNN where NNN is a hexadecimal
event descriptor. Multiple events can be specified
either as a comma-separated list or as multiple -e <EVENT> options.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-tools-generic 3.13.0.37.44
ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
Uname: Linux 3.13.0-36-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: edriscoll 2480 F.... pulseaudio
/dev/snd/pcmC1D0p: edriscoll 2480 F...m pulseaudio
/dev/snd/controlC0: edriscoll 2480 F.... pulseaudio
CurrentDesktop: GNOME
Date: Wed Oct 15 17:40:03 2014
HibernationDevice: RESUME=/dev/mapper/md126p4_crypt
IwConfig:
lo no wireless extensions.
em1 no wireless extensions.
MachineType: Hewlett-Packard HP Z220 CMT Workstation
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-36-generic.efi.signed
root=UUID=4977c0ff-3e3b-46ec-8514-7b53d26fe4df ro splash quiet nomdmonddf
nomdmonisw vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-36-generic N/A
linux-backports-modules-3.13.0-36-generic N/A
linux-firmware 1.127.7
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/16/2013
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: K51 v01.61
dmi.board.asset.tag: 2UA3310KB0
dmi.board.name: 1790
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: 2UA3310KB0
dmi.chassis.type: 6
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnHewlett-Packard:bvrK51v01.61:bd05/16/2013:svnHewlett-Packard:pnHPZ220CMTWorkstation:pvr:rvnHewlett-Packard:rn1790:rvr:cvnHewlett-Packard:ct6:cvr:
dmi.product.name: HP Z220 CMT Workstation
dmi.sys.vendor: Hewlett-Packard
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