You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-07-12 - 10:28

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #c, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackcslot7s.osadl.org (updated Sat Jul 12, 2025 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17497152980,7sleep30-21swapper/322:15:313
162399840,5rtkit-daemon0-21swapper/100:05:461
17523302830,8sleep12197014-21PK-Backend22:25:031
17523302830,8sleep12197014-21PK-Backend22:25:031
162399820,9rtkit-daemon1791627-21ntp_states00:15:261
162399820,14rtkit-daemon1938-21gsd-housekeepin00:21:071
162399820,14rtkit-daemon1938-21gsd-housekeepin00:21:071
168325199789,18cyclictest1753-21gnome-shell00:30:222
162399770,6rtkit-daemon2197014-21PK-Backend00:13:521
162399770,5rtkit-daemon0-21swapper/123:40:451
162399770,5rtkit-daemon0-21swapper/123:35:121
168288427646,22sleep30-21swapper/319:07:153
168279727139,9sleep10-21swapper/119:06:091
168300326848,14sleep00-21swapper/019:08:450
1683251996514,19cyclictest1753-21gnome-shell21:30:132
168162326542,16sleep20-21swapper/219:05:102
1683251996215,18cyclictest1753-21gnome-shell21:35:272
1683251996215,18cyclictest1753-21gnome-shell21:35:262
162399620,9rtkit-daemon1622-21rtkit-daemon20:27:011
1683251996115,18cyclictest1753-21gnome-shell00:25:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional