Add performance sysctls to $lib.cell.getSystemInfo (SYN-5702)

[vEpiphyte]

No description provided.

[codecov]

Codecov Report

Patch coverage: 90.90% and project coverage change: -0.11 ⚠️

Comparison is base (ab07d7c) 97.29% compared to head (6661e55) 97.19%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3236      +/-   ##
==========================================
- Coverage   97.29%   97.19%   -0.11%     
==========================================
  Files         225      225              
  Lines       45054    45065      +11     
==========================================
- Hits        43837    43801      -36     
- Misses       1217     1264      +47     

Flag	Coverage Δ
linux	97.19% <90.90%> (-0.01%)	⬇️
linux_replay	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
synapse/lib/platforms/linux.py	84.87% <90.00%> (+0.47%)	⬆️
synapse/lib/cell.py	98.00% <100.00%> (+<0.01%)	⬆️

... and 9 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.11% ⚠️

Comparison is base (2882ae9) 97.32% compared to head (d0cb304) 97.21%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3236      +/-   ##
==========================================
- Coverage   97.32%   97.21%   -0.11%     
==========================================
  Files         226      226              
  Lines       45383    45394      +11     
==========================================
- Hits        44167    44130      -37     
- Misses       1216     1264      +48     

Flag	Coverage Δ
linux	97.21% <100.00%> (-0.01%)	⬇️
linux_replay	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
synapse/lib/cell.py	98.00% <100.00%> (+<0.01%)	⬆️
synapse/lib/platforms/linux.py	85.71% <100.00%> (+1.31%)	⬆️

... and 10 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.