hugetop: print human readable sizes by default

[Franklin-Qi]

Consistent with the hugetop command of procps-ng, change the default size to a format suitable for human reading.

Closed: #687

[codecov]

Codecov Report

❌ Patch coverage is 0% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 19.19%. Comparing base (ebd7d9b) to head (66b4450).
⚠️ Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
src/uu/hugetop/src/hugetop.rs	0.00%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #688      +/-   ##
==========================================
- Coverage   19.19%   19.19%   -0.01%     
==========================================
  Files          68       68              
  Lines       10158    10159       +1     
  Branches      546      545       -1     
==========================================
  Hits         1950     1950              
- Misses       8208     8209       +1     

Flag	Coverage Δ
macos_latest	6.74% <0.00%> (-0.01%)	⬇️
ubuntu_latest	19.55% <0.00%> (-0.01%)	⬇️
windows_latest	0.02% <0.00%> (ø)

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[sylvestre]

some jobs are failing

[sylvestre]

clippy is sad :)

[Franklin-Qi]

clippy is sad :)

Thank you for your review, I am revising it.

[Krysztal112233]

I noticed that procps-ng has -H --human flag

procps/src on  master via C v15.2.0-gcc 
❯ ./hugetop -h

Usage:
 hugetop [options]

Options:
 -d, --delay <secs>  delay updates
 -n, --numa          display per NUMA nodes Huge pages information
 -o, --once          only display once, then exit
 -H, --human         display human-readable output

 -h, --help     display this help and exit
 -V, --version  output version information and exit

And in procps-ng, this parameter affects how the entries are output:

procps/src on  master [?] via C v15.2.0-gcc 
❯ sudo ./hugetop -H --o      
hugetop - Fri Jun  5 17:34:20 2026
node(s): 2.0Mi - 5/8, 1.0Gi - 0/0
     PID     SHARED    PRIVATE COMMAND                                        
   44101         0B      6.0Mi hugetlb_test
                       -------
                      NOTICE HERE

procps/src on  master [?] via C v15.2.0-gcc 
❯ sudo ./hugetop --o   
hugetop - Fri Jun  5 17:34:24 2026
node(s): 2.0Mi - 5/8, 1.0Gi - 0/0
     PID     SHARED    PRIVATE COMMAND                                        
   44101          0       6144 hugetlb_test
                       -------
                      NOTICE HERE

But in this pr

procps on  fix-bug#687-print-human-readable-sizes-by-default [$] is 📦 v0.0.1 via 🦀 v1.96.0 took 6s 
❯ cargo run -q hugetop -o -H
hugetop - Fri Jun  5 17:35:44 2026
node(s): 2.0Mi - 5/8, 1.0Gi - 0/0
     PID     SHARED    PRIVATE COMMAND
   44101         0B      6.0Mi hugetlb_test
                       -------
                      NOTICE HERE

procps on  fix-bug#687-print-human-readable-sizes-by-default [$] is 📦 v0.0.1 via 🦀 v1.96.0 took 3s 
❯ cargo run -q hugetop -o   
hugetop - Fri Jun  5 17:35:49 2026
node(s): 2.0Mi - 5/8, 1.0Gi - 0/0
     PID     SHARED    PRIVATE COMMAND
   44101         0B      6.0Mi hugetlb_test
                       -------
                      NOTICE HERE

So please fixed this mistake :)

[Franklin-Qi]

Okay, @Krysztal112233 thank you for the suggestion; I will handle this situation.

[Franklin-Qi]

The error message from Basic CI / cargo test (ubuntu-latest) is a legacy issue from w and a pull request has been submitted: #718