Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

time tbrun does not report correct CPU time #31

Open
wfjm opened this issue Jul 5, 2022 · 0 comments
Open

time tbrun does not report correct CPU time #31

wfjm opened this issue Jul 5, 2022 · 0 comments
Labels
minor deficit non-conformity but minimal impact on operation tool chain issue

Comments

@wfjm
Copy link
Owner

wfjm commented Jul 5, 2022

A time tbrun command does not report the correct CPU time, example

time nice tbrun -j 4 -nomake -all
  tbrun-I: all tests passed, 102 tests selected from 102 found
  real 6m46.345s   user 2m14.553s   sys 0m11.417s

The tbrun command ran for more than 6 minutes in 4 parallel threads, usually with 100% CPU time.
One expects a total CPU of about 4*6=24 minutes, time reports only 2 minutes.
Likely some wait harvesting issue.
@wfjm wfjm added minor deficit non-conformity but minimal impact on operation tool chain issue labels Jul 5, 2022
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
minor deficit non-conformity but minimal impact on operation tool chain issue
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
1 participant
@wfjm