You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-29 - 05:28

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 #7, slot #4

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 rack7slot4s.osadl.org (updated Wed Apr 29, 2026 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
911199836,12cyclictest12-21ksoftirqd/019:40:130
912899648,11cyclictest27-21ksoftirqd/222:40:142
9128996316,23cyclictest27-21ksoftirqd/200:05:132
912899557,13cyclictest131rcu_preempt00:25:132
9111995212,7cyclictest131rcu_preempt20:55:130
911199494,34cyclictest24030-21ssh22:20:120
913899463,8cyclictest35966irq/58-eth023:25:143
912899466,23cyclictest27-21ksoftirqd/200:00:142
911999442,39cyclictest3966-21ssh22:45:131
911999441,35cyclictest31397-21ssh21:30:141
911999432,36cyclictest22360-21ssh21:25:141
911199435,5cyclictest131rcu_preempt20:30:140
911999421,33cyclictest7923-21ssh21:35:131
911999421,33cyclictest7923-21ssh21:35:131
911199426,10cyclictest12-21ksoftirqd/021:40:130
911999413,34cyclictest30329-21ssh00:30:141
9119994126,10cyclictest18486-21apt-get22:35:141
911999402,32cyclictest8924-21ssh00:00:141
913899394,23cyclictest0-21swapper/322:45:133
9138993927,5cyclictest35966irq/58-eth023:45:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional