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2026-05-15 - 17:00

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Fri May 15, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2716621630,13sleep0282099cyclictest09:06:090
28209910616,11cyclictest3159-21grep06:56:100
2820991034,35cyclictest0-21swapper/007:06:220
2823991019,14cyclictest0-21swapper/209:51:092
282099975,26cyclictest0-21swapper/008:10:580
282099966,26cyclictest0-21swapper/008:49:550
282099966,26cyclictest0-21swapper/008:49:550
282099965,25cyclictest0-21swapper/010:04:420
282099964,27cyclictest0-21swapper/007:56:060
282099955,26cyclictest0-21swapper/009:24:220
2820999529,57cyclictest0-21swapper/008:26:060
2820999519,12cyclictest0-21swapper/009:03:590
282099945,25cyclictest0-21swapper/009:11:050
282099945,25cyclictest0-21swapper/006:51:090
282099944,27cyclictest0-21swapper/006:46:340
282099944,27cyclictest0-21swapper/006:46:340
2820999414,71cyclictest121850irq/46-eth008:36:150
282399934,46cyclictest0-21swapper/207:41:252
282399934,13cyclictest0-21swapper/209:40:592
2820999328,58cyclictest0-21swapper/007:51:250
282099925,27cyclictest0-21swapper/009:29:320
282099925,27cyclictest0-21swapper/009:29:320
282099925,27cyclictest0-21swapper/005:41:220
282099925,25cyclictest0-21swapper/010:12:200
2820999217,14cyclictest0-21swapper/007:46:420
2820999217,13cyclictest0-21swapper/008:58:580
248599920,4rtkit-daemon2484-21rtkit-daemon05:44:232
282099919,23cyclictest0-21swapper/008:10:320
282099919,23cyclictest0-21swapper/008:10:320
282099914,78cyclictest0-21swapper/007:36:290
2820999127,55cyclictest0-21swapper/007:31:150
2820999120,13cyclictest0-21swapper/008:16:040
2820999119,12cyclictest0-21swapper/009:31:510
2820999119,11cyclictest0-21swapper/006:40:570
2820999115,11cyclictest29695-21ps08:21:210
2820999111,13cyclictest0-21swapper/009:56:190
282099905,77cyclictest0-21swapper/008:31:100
282099905,25cyclictest0-21swapper/008:03:360
282099904,26cyclictest0-21swapper/009:51:030
282099904,25cyclictest0-21swapper/008:44:250
2820999031,52cyclictest0-21swapper/007:25:030
2820999028,54cyclictest16684-21grep05:11:320
2820999019,13cyclictest0-21swapper/007:41:050
2820999017,12cyclictest1287-21snmpd09:45:190
282099893,27cyclictest16709-21ssh09:38:260
282099885,26cyclictest0-21swapper/010:08:450
282099885,26cyclictest0-21swapper/010:08:450
282099885,24cyclictest0-21swapper/007:15:350
282099884,75cyclictest0-21swapper/007:16:240
282099883,76cyclictest4045-21grep09:20:500
282099875,74cyclictest0-21swapper/006:06:270
282099875,74cyclictest0-21swapper/006:06:270
282099875,18cyclictest22096-21kernelversion09:46:120
282099874,27cyclictest0-21swapper/004:55:380
282099874,14cyclictest1419-21runrttasks08:51:030
282099873,31cyclictest0-21swapper/006:36:110
282099865,26cyclictest6276-21munin-node07:01:070
282099864,27cyclictest0-21swapper/007:26:260
282099864,27cyclictest0-21swapper/007:26:260
282099863,75cyclictest0-21swapper/005:50:570
248599860,5rtkit-daemon2484-21rtkit-daemon08:24:393
282099855,72cyclictest0-21swapper/004:51:000
282099854,29cyclictest0-21swapper/006:16:300
2820998418,12cyclictest0-21swapper/005:21:250
248599840,4rtkit-daemon2484-21rtkit-daemon05:11:172
248599830,4rtkit-daemon2484-21rtkit-daemon07:32:413
282099825,14cyclictest0-21swapper/005:57:400
248599820,5rtkit-daemon2484-21rtkit-daemon08:00:323
248599820,4rtkit-daemon2484-21rtkit-daemon05:32:163
248599820,4rtkit-daemon2484-21rtkit-daemon04:54:403
282099815,30cyclictest0-21swapper/004:56:180
282099814,16cyclictest0-21swapper/004:46:010
282099814,16cyclictest0-21swapper/004:46:010
282099814,14cyclictest0-21swapper/005:39:530
248599810,5rtkit-daemon2484-21rtkit-daemon05:08:243
2822998019,54cyclictest0-21swapper/108:16:221
282099805,23cyclictest0-21swapper/005:06:330
282099804,68cyclictest0-21swapper/005:31:340
2820998014,12cyclictest0-21swapper/005:51:090
248599800,5rtkit-daemon2484-21rtkit-daemon08:06:023
248599800,5rtkit-daemon2484-21rtkit-daemon08:06:023
248599800,5rtkit-daemon2484-21rtkit-daemon07:15:123
248599800,4rtkit-daemon2484-21rtkit-daemon07:44:183
248599800,4rtkit-daemon2484-21rtkit-daemon07:39:033
248599800,4rtkit-daemon2484-21rtkit-daemon05:38:453
248599800,4rtkit-daemon2484-21rtkit-daemon05:13:243
248599800,4rtkit-daemon2484-21rtkit-daemon04:48:403
282099795,66cyclictest0-21swapper/006:11:190
282099794,23cyclictest0-21swapper/006:31:250
248599790,4rtkit-daemon2484-21rtkit-daemon09:49:063
248599790,4rtkit-daemon2484-21rtkit-daemon09:15:523
248599790,4rtkit-daemon2484-21rtkit-daemon08:29:013
248599790,4rtkit-daemon2484-21rtkit-daemon08:15:543
248599790,4rtkit-daemon2484-21rtkit-daemon08:01:553
248599790,4rtkit-daemon2484-21rtkit-daemon05:44:153
248599790,4rtkit-daemon2484-21rtkit-daemon04:59:323
282099785,25cyclictest0-21swapper/005:01:330
282099784,10cyclictest0-21swapper/005:26:100
282099784,10cyclictest0-21swapper/005:26:100
2820997812,17cyclictest0-21swapper/006:26:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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