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2026-04-15 - 23:03

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 Wed Apr 15, 2026 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145539910033,47cyclictest7178-21ls20:40:430
14553999828,59cyclictest14367-21ntpq21:26:060
14553999730,46cyclictest23868-21grep16:56:000
14553999728,47cyclictest22566-21latency_hist20:20:440
14553999725,56cyclictest0-21swapper/018:31:040
237552960,2sleep10-21swapper/120:59:451
14553999634,28cyclictest0-21swapper/016:30:570
14553999634,28cyclictest0-21swapper/016:30:570
14553999631,51cyclictest9173-21cron17:45:430
14553999626,48cyclictest30353-21munin-plugin-st21:45:430
14553999432,12cyclictest20648-21ssh19:40:440
14553999424,53cyclictest0-21swapper/019:57:490
14553999232,44cyclictest20068-21aten_rbpower_en16:45:560
14553999226,47cyclictest14145-21grep17:56:100
14553999225,55cyclictest14968-21egrep18:55:570
14553999224,55cyclictest26363-21grep17:01:100
14553999133,41cyclictest25595-21ssh19:46:010
14553999133,41cyclictest25595-21ssh19:46:010
14553998931,46cyclictest19471-21sh21:31:420
321032880,2sleep00-21swapper/020:31:050
14553998833,38cyclictest26837-21ssh19:09:570
14553998833,38cyclictest26837-21ssh19:09:570
14553998823,52cyclictest11180-21rm19:29:220
14553998820,54cyclictest5798-21grep20:00:590
14553998727,45cyclictest0-21swapper/019:21:040
14553998725,40cyclictest7287-21idleruntime-cro17:40:440
14553998725,40cyclictest7287-21idleruntime-cro17:40:440
14553998721,49cyclictest0-21swapper/020:41:000
14553998628,37cyclictest10160-21latency_hist18:50:440
14553998626,41cyclictest23755-21latency_hist18:25:450
14553998626,41cyclictest23755-21latency_hist18:25:450
14553998623,47cyclictest11462-21fschecks_count17:51:010
14553998528,44cyclictest27292-21ssh21:03:280
14553998429,41cyclictest28555-21ssh20:26:240
14553998427,41cyclictest11840-21rm21:23:180
14553998423,48cyclictest0-21swapper/017:48:390
14553998325,43cyclictest7208-21taskset21:17:390
14553998324,41cyclictest0-21swapper/020:20:590
14553998227,43cyclictest24144-21fschecks_count18:26:010
14553998225,42cyclictest22623-21ssh20:57:470
14553998224,45cyclictest0-21swapper/019:52:080
14553998224,44cyclictest22422-21rm19:04:430
14553998222,45cyclictest0-21swapper/021:51:410
14553998129,30cyclictest31316-21ls21:46:050
14553998127,39cyclictest10271-21ssh21:59:560
14553998122,37cyclictest21811-21grep19:41:060
14553998029,35cyclictest12867-21ssh18:53:080
14553998029,12cyclictest19533-21ssh20:54:550
14553998025,43cyclictest30514-21ssh21:06:390
14553998025,43cyclictest30514-21ssh21:06:390
14553998025,40cyclictest31843-21ssh19:15:490
14553998024,41cyclictest24092-21ssh21:37:180
14553997927,32cyclictest22484-21ntpq16:51:040
14553997922,53cyclictest10835-21rt-features20:06:100
14553997920,46cyclictest2549-21chrt21:12:000
14553997824,40cyclictest14386-21ssh19:32:310
14553997824,40cyclictest14386-21ssh19:32:310
14553997821,43cyclictest0-21swapper/018:36:130
14553997821,42cyclictest0-21swapper/020:14:550
14553997821,42cyclictest0-21swapper/017:27:160
14553997817,43cyclictest0-21swapper/020:49:140
32432770,2sleep30-21swapper/319:20:273
14553997726,34cyclictest1927-21cut18:40:560
14553997716,53cyclictest0-21swapper/018:12:140
269792760,4sleep10-21swapper/117:05:441
1455399766,54cyclictest0-21swapper/018:16:010
14553997625,38cyclictest17931-21taskset16:40:300
14553997525,32cyclictest28624-21taskset17:08:590
14553997524,34cyclictest31443-21ssh19:15:310
14553997424,38cyclictest16267-21chrt18:04:070
210402730,3sleep231-21ksoftirqd/219:02:182
14553997225,31cyclictest19746-21chrt16:45:380
325992710,5sleep314552-21cyclictest21:47:133
1455499717,26cyclictest0-21swapper/121:15:571
14553997129,25cyclictest32376-21taskset17:19:260
14553997123,9cyclictest0-21swapper/018:09:300
14553997120,39cyclictest908-21runrttasks17:32:310
118292710,2sleep211831-21basename20:45:572
14553997017,45cyclictest0-21swapper/017:24:400
78982690,7sleep1221ktimersoftd/119:25:441
1455499697,22cyclictest0-21swapper/120:20:581
14553996921,30cyclictest0-21swapper/017:11:530
14553996921,30cyclictest0-21swapper/017:11:530
156742660,2sleep20-21swapper/221:27:322
57622580,2sleep10-21swapper/121:54:321
134122580,5sleep31455699cyclictest20:09:593
1455499575,13cyclictest1380-21ssh19:55:561
295222550,2sleep20-21swapper/218:35:252
1455499497,26cyclictest0-21swapper/116:45:561
14554994913,23cyclictest0-21swapper/117:40:501
141002493,37sleep00-21swapper/016:28:230
1455599481,6cyclictest7850irq/56-dwc_otg_19:55:562
1455499487,26cyclictest0-21swapper/119:45:571
1455499487,26cyclictest0-21swapper/119:45:571
1455699477,25cyclictest0-21swapper/317:15:583
1455599477,26cyclictest0-21swapper/217:55:562
1455499477,26cyclictest3239-21ssh20:35:551
1455499476,27cyclictest0-21swapper/118:15:571
14554994722,5cyclictest26408-21/usr/sbin/munin18:31:041
94372460,5sleep31455699cyclictest18:49:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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