weblist in go tool pprof does not work for me

[Jochen Voss]

Hello,

For a while, the "weblist" command in go tool pprof has been broken for me ("list" still works).  Is this a known issue?  What can I do to fix this?

What I am doing:

- I am using "go version go1.18.3 darwin/arm64" on a MacBook Pro (M1 Pro processor).

- I am profiling one of my unit tests using the following command:

    go test -run '^TestAll$' -cpuprofile cpu.out -memprofile mem.out

- I am calling pprof using the command

    go tool pprof sfnt.test cpu.out

- most commands seem to work, for example:

(pprof) top10
Showing nodes accounting for 20130ms, 86.54% of 23260ms total
Dropped 162 nodes (cum <= 116.30ms)
Showing top 10 nodes out of 124
      flat  flat%   sum%        cum   cum%
    6790ms 29.19% 29.19%     6790ms 29.19%  runtime.madvise
    4840ms 20.81% 50.00%     4840ms 20.81%  syscall.syscall6
    1910ms  8.21% 58.21%     1910ms  8.21%  runtime.usleep
    1740ms  7.48% 65.69%     1740ms  7.48%  runtime.pthread_kill
    1710ms  7.35% 73.04%     1710ms  7.35%  runtime.pthread_cond_wait
     990ms  4.26% 77.30%      990ms  4.26%  runtime.kevent
     770ms  3.31% 80.61%     2020ms  8.68%  seehuhn.de/go/pdf/font/cff.decodeCharString
     540ms  2.32% 82.93%     1440ms  6.19%  runtime.scanobject
     530ms  2.28% 85.21%      530ms  2.28%  runtime.pthread_cond_signal
     310ms  1.33% 86.54%     1040ms  4.47%  runtime.mallocgc

- "list" works, for example I get the expected output for list cff.decodeCharString

- "weblist" does not work.  If I call weblist cff.decodeCharString the web browser opens but shows a page containing only the following five lines of text, and no listing:

     File: sfnt.test
     Type: cpu
     Time: Jun 24, 2022 at 1:09pm (BST)
     Duration: 19.03s, Total samples = 23.26s (122.20%)
     Total: 23.26s

Am I doing anything wrong?  I didn't find any reports of similar problems on Google, so maybe this is just some oddity of my setup or me doing something silly?

All the best,

Jochen

[Sergey Gorlov]

Hello,

Did you find a solution to this problem? I have the same problem with weblist.

All the best,

Sergey

пятница, 24 июня 2022 г. в 15:27:11 UTC+3, Jochen Voss:

[Jochen Voss]

On 26 Sep 2023, at 6:20, Sergey Gorlov wrote:
> Did you find a solution to this problem? I have the same problem with
> weblist.

No, I didn't. I think it's just broken. If I find time, I'll submit a bug report (unless somebody beats me to it).

All the best,
Jochen
--
http://seehuhn.de/