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Bug#1098512: linux-perf: `perf report` shows `Cannot load tips.txt file, please install perf!`



Dear Salvatore,


Thank you for your prompt reply.

Am 21.02.25 um 19:13 schrieb Salvatore Bonaccorso:
Control: forcemerge 1088747 1098512

On Fri, Feb 21, 2025 at 06:04:40PM +0100, Paul Menzel wrote:
Package: linux-perf
Version: 6.12.15-1
Severity: normal

With

     $ LANG= dpkg -l linux-perf
     […]
     ii  linux-perf     6.12.15-1    amd64        Performance analysis tools for Linux

recording a profile and trying to show it

     $ sudo perf record -a -g -F 999
     ^C[ perf record: Woken up 42 times to write data ]
     [ perf record: Captured and wrote 11,877 MB perf.data (59158 samples) ]

     $ sudo chown pmenzel: perf.data
     $ perf report perf.data

the profile is loaded, but nothing is displayed, and only the header is
shown, and at the bottom the message below is written:

     perf report` shows Cannot load tips.txt file, please install perf!

The file is shipped by `linux-perf`, but it’s compressed:

     $ dpkg -S /usr/share/doc/linux-perf/tips.txt.gz
     linux-perf: /usr/share/doc/linux-perf/tips.txt.gz

Uncompressing the file, the message is not shown anymore. Still nothing is
shown, but that is for another bug report.

The problem with compressed tips.txt is reported at #1088747 so
merging the two bugs.

Thank you for finding this. I am sorry for causing extra work.

About not showing something, right: according to perf report -h:

     -i, --input <file>    input file name

Please try perf report -i perf.data. See as well perf-report(1).

(or with no arguments at all to perf report in the directory where you
have your perf.data).

Indeed, that did the trick. Thank you!


Kind regards,

Paul


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