You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-06-12 - 03:57

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 50 highest latencies:
System rack7slot4s.osadl.org (updated Fri Jun 12, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
168599612,7cyclictest0-21swapper/219:15:132
168599573,36cyclictest18382-21ssh21:45:102
168599555,46cyclictest0-21swapper/219:35:112
1666995412,34cyclictest10728-21ssh23:10:130
168599533,4cyclictest0-21swapper/222:45:132
168599531,4cyclictest0-21swapper/219:10:122
166699532,41cyclictest15967-21ssh22:55:130
168599525,22cyclictest8042-21ssh22:15:132
168599511,4cyclictest0-21swapper/222:25:182
168599511,4cyclictest0-21swapper/222:25:182
167699512,2cyclictest131rcu_preempt21:10:131
167699481,6cyclictest131rcu_preempt22:20:131
166699485,30cyclictest27329-21ssh23:55:130
1666994831,11cyclictest23638-21ssh23:35:130
168599475,38cyclictest27346irq/40-dwc2_hso00:15:122
167699473,11cyclictest131rcu_preempt21:45:111
167699471,5cyclictest131rcu_preempt00:15:121
168599441,10cyclictest19661-21diskmemload23:50:122
168599440,7cyclictest0-21swapper/220:05:132
1676994420,12cyclictest21-21ksoftirqd/121:55:121
169399435,20cyclictest35966irq/58-eth021:40:123
168599423,6cyclictest522-21apt-get20:50:122
168599423,4cyclictest0-21swapper/221:00:112
1676994235,3cyclictest21-21ksoftirqd/123:15:141
167699423,28cyclictest2126-21ssh00:35:121
166699423,28cyclictest8048-21ssh22:15:130
166699422,26cyclictest25021-21ssh23:00:120
166699422,26cyclictest25021-21ssh23:00:120
169399414,26cyclictest35966irq/58-eth023:55:123
168599413,4cyclictest0-21swapper/222:05:132
1666994132,4cyclictest10207-21apt-get21:00:120
1666994121,15cyclictest28890-21ssh23:20:110
169399403,23cyclictest35966irq/58-eth023:25:113
168599401,8cyclictest14259-21kthreadcore22:35:222
1666994031,5cyclictest9001-21apt-get20:25:110
168599393,30cyclictest27346irq/40-dwc2_hso21:43:212
168599391,34cyclictest24097-21fschecks_time21:30:162
1676993919,12cyclictest0-21swapper/121:30:131
1666993924,9cyclictest14824-21apt-get21:25:140
168599386,29cyclictest23673-21switchtime23:15:302
168599382,7cyclictest0-21swapper/222:20:132
168599381,9cyclictest15276-21grep19:20:272
168599381,8cyclictest32396-21kthreadcore19:40:202
168599381,33cyclictest5880-21grep20:55:172
168599380,9cyclictest5915-21kthreadcore00:00:222
167699381,28cyclictest23629-21ssh23:35:121
1666993827,4cyclictest20055-21apt-get21:10:130
1693993718,11cyclictest35966irq/58-eth022:55:143
168599371,7cyclictest22322-21cut21:10:222
168599371,3cyclictest10713-21ssh23:10:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional