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2026-04-27 - 14:28

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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 
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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.

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 100 highest latencies:
System rack7slot3s.osadl.org (updated Mon Apr 27, 2026 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1593126590,7sleep00-21swapper/016:30:500
1663221060,4sleep013-21rcuc/019:36:030
198182740,2sleep20-21swapper/218:10:512
198182740,2sleep20-21swapper/218:10:512
122922740,2sleep10-21swapper/117:49:121
16201997215,14cyclictest0-21swapper/020:26:010
271982700,2sleep00-21swapper/019:09:340
16201997037,3cyclictest0-21swapper/018:26:020
1620199651,6cyclictest6513-21ssh21:21:010
203502640,2sleep10-21swapper/119:40:431
16201996431,2cyclictest0-21swapper/020:51:030
1620199622,31cyclictest0-21swapper/017:20:510
1620199618,28cyclictest9-21ksoftirqd/020:16:190
153102610,5sleep10-21swapper/116:26:171
175862600,1sleep10-21swapper/121:33:481
16201996016,26cyclictest9-21ksoftirqd/019:50:500
108132600,4sleep11620299cyclictest21:26:031
16201995939,5cyclictest3914-21latency18:41:110
16201995836,9cyclictest7950irq/56-dwc_otg_21:11:040
16201995831,5cyclictest2029-21head19:56:190
16201995827,10cyclictest0-21swapper/020:10:500
1620199581,9cyclictest21247-21sed19:01:190
45252570,2sleep00-21swapper/021:17:490
1620199571,39cyclictest10019-21timerandwakeup17:41:170
1620199571,29cyclictest29713-21apt-get20:30:560
16201995637,4cyclictest101ktimersoftd/021:26:070
1620199562,26cyclictest18743-21ls21:35:500
1620199561,8cyclictest22896-21sed18:16:190
271702550,2sleep30-21swapper/317:01:043
16204995511,20cyclictest7950irq/56-dwc_otg_18:46:023
1620199556,4cyclictest9-21ksoftirqd/017:56:070
16201995527,11cyclictest7950irq/56-dwc_otg_18:15:490
1620199552,50cyclictest0-21swapper/019:21:010
1620199552,34cyclictest0-21swapper/017:31:180
1620199552,25cyclictest9-21ksoftirqd/018:31:030
1620199551,51cyclictest16912-21cat18:56:180
1620199551,41cyclictest32427-21ssh18:36:150
1620199551,35cyclictest27754-21unixbench-2d21:06:200
16201995430,6cyclictest7850irq/56-dwc_otg_17:50:500
1620199541,43cyclictest27237-21kworker/0:121:49:580
15472540,2sleep20-21swapper/221:53:342
1620499534,8cyclictest7950irq/56-dwc_otg_21:16:023
16201995332,4cyclictest7850irq/56-dwc_otg_21:36:030
16201995324,6cyclictest101ktimersoftd/019:11:010
16201995320,18cyclictest9-21ksoftirqd/019:51:100
1620199531,28cyclictest7295-21wget17:36:040
254942520,1sleep20-21swapper/221:43:072
254942520,1sleep20-21swapper/221:43:072
1620499524,7cyclictest7950irq/56-dwc_otg_18:56:033
1620299526,17cyclictest7750irq/56-dwc_otg19:45:501
16201995216,21cyclictest0-21swapper/018:21:120
1620199521,25cyclictest2195350ssh19:41:180
1620199521,14cyclictest10857-21switchtime20:46:170
1620199521,14cyclictest10857-21switchtime20:46:170
1620299512,10cyclictest7750irq/56-dwc_otg19:11:021
1620199512,26cyclictest29393-21grep17:06:090
1620199511,4cyclictest0-21swapper/018:46:040
1620199511,25cyclictest26309-21apt-config21:05:510
1620499502,7cyclictest0-21swapper/320:16:033
16201995023,5cyclictest9188-21grep19:26:160
16201995023,5cyclictest9188-21grep19:26:160
1620199501,27cyclictest5867-21aten_rbpower_vo20:41:050
1620199501,27cyclictest5199-21cron17:30:500
1620199501,25cyclictest13567-21ssh19:31:170
1620499493,4cyclictest7750irq/56-dwc_otg19:26:023
1620499493,4cyclictest7750irq/56-dwc_otg19:26:023
1620399491,15cyclictest28885-21ls19:50:512
1620299491,7cyclictest25539-21ssh20:26:011
1620199493,20cyclictest9-21ksoftirqd/019:16:070
16201994919,15cyclictest9-21ksoftirqd/021:51:170
1620199491,8cyclictest13-21rcuc/017:51:060
1620199491,26cyclictest23175-21munin-node21:41:000
1620199491,26cyclictest23175-21munin-node21:41:000
16204994824,8cyclictest7950irq/56-dwc_otg_21:21:043
1620199481,29cyclictest13-21rcuc/017:00:560
1620299471,27cyclictest0-21swapper/116:31:171
1620199476,29cyclictest9-21ksoftirqd/016:50:490
1620199471,26cyclictest8643-21cron20:05:490
1620199471,20cyclictest18359-21fschecks_time16:36:070
1620399467,28cyclictest7950irq/56-dwc_otg_19:21:032
1620299468,25cyclictest0-21swapper/118:06:041
1620299468,25cyclictest0-21swapper/118:06:041
1620199465,31cyclictest13-21rcuc/016:33:330
1620199464,34cyclictest7526-21kworker/0:218:54:080
1620499452,3cyclictest0-21swapper/317:16:033
1620299457,25cyclictest0-21swapper/116:56:041
16201994524,11cyclictest19951-21ssh20:57:100
16201994523,4cyclictest14089-21cat20:11:160
1620199451,20cyclictest4395-21sed21:56:170
53822440,5sleep11620299cyclictest21:58:001
1620499447,24cyclictest0-21swapper/321:25:573
1620499440,12cyclictest18176-21ssh20:56:023
1620399447,24cyclictest20579-21ls18:11:142
1620299447,23cyclictest0-21swapper/117:31:031
1620299447,22cyclictest0-21swapper/117:55:551
16201994422,12cyclictest7850irq/56-dwc_otg_20:20:530
16201994422,12cyclictest7850irq/56-dwc_otg_20:20:530
16201994414,5cyclictest1565-21grep20:36:030
1620499437,24cyclictest0-21swapper/319:15:563
1620499437,24cyclictest0-21swapper/316:36:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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