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2025-11-11 - 04:00

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
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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 Tue Nov 11, 2025 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2357999894,62cyclictest0-21swapper/019:30:060
23579998921,45cyclictest0-21swapper/023:54:480
2357999884,25cyclictest0-21swapper/023:17:110
2357999874,26cyclictest0-21swapper/000:17:210
23579998714,12cyclictest0-21swapper/023:19:580
243799860,5rtkit-daemon2436-21rtkit-daemon22:52:402
2357999864,28cyclictest0-21swapper/022:19:530
2357999864,28cyclictest0-21swapper/020:19:500
23579998612,13cyclictest0-21swapper/019:39:360
2357999854,72cyclictest0-21swapper/022:14:510
2357999854,72cyclictest0-21swapper/022:14:510
2357999854,25cyclictest0-21swapper/021:06:480
23579998522,55cyclictest0-21swapper/000:04:530
23579998518,11cyclictest0-21swapper/021:21:500
2357999845,72cyclictest0-21swapper/021:00:040
2357999844,72cyclictest0-21swapper/023:29:500
23579998425,53cyclictest20267-21proc_pri21:15:000
2357999834,27cyclictest0-21swapper/022:37:040
2357999834,25cyclictest0-21swapper/019:26:290
2357999834,25cyclictest0-21swapper/019:26:290
2357999833,24cyclictest0-21swapper/019:19:490
2357999833,23cyclictest0-21swapper/022:59:520
2357999833,23cyclictest0-21swapper/022:59:520
23579998323,52cyclictest24557-21fschecks_time19:09:580
2357999825,26cyclictest0-21swapper/022:27:020
2357999824,71cyclictest0-21swapper/020:44:490
2357999824,70cyclictest0-21swapper/020:10:060
2357999824,70cyclictest0-21swapper/020:10:060
2357999824,22cyclictest0-21swapper/019:40:060
2357999823,73cyclictest0-21swapper/022:55:020
2357999823,24cyclictest0-21swapper/019:59:470
2357999823,24cyclictest0-21swapper/000:24:480
23579998227,48cyclictest7886-21crond21:59:300
23579998227,48cyclictest1369-21runrttasks22:05:040
23579998224,51cyclictest0-21swapper/020:34:570
23579998214,12cyclictest0-21swapper/020:54:510
2357999814,26cyclictest0-21swapper/000:10:050
2357999814,24cyclictest0-21swapper/021:59:430
243799800,8rtkit-daemon0-21swapper/219:54:542
2357999809,13cyclictest0-21swapper/022:49:500
2357999804,26cyclictest0-21swapper/020:14:580
2357999803,69cyclictest0-21swapper/022:29:570
2357999796,15cyclictest0-21swapper/019:49:360
2357999794,69cyclictest0-21swapper/021:09:530
2357999794,67cyclictest0-21swapper/023:34:400
2357999794,26cyclictest0-21swapper/020:24:460
2357999794,25cyclictest0-21swapper/022:39:430
2357999794,22cyclictest0-21swapper/000:34:390
2357999793,23cyclictest0-21swapper/023:50:010
23579997924,48cyclictest0-21swapper/021:32:150
23579997923,50cyclictest0-21swapper/020:50:040
23579997923,50cyclictest0-21swapper/020:50:040
2357999784,66cyclictest0-21swapper/023:09:440
2357999784,23cyclictest0-21swapper/020:04:460
2357999784,22cyclictest0-21swapper/020:40:090
2357999774,22cyclictest0-21swapper/021:25:050
2357999774,13cyclictest0-21swapper/021:45:050
2357999774,12cyclictest0-21swapper/019:15:090
2357999773,22cyclictest0-21swapper/023:24:560
23579997722,9cyclictest1369-21runrttasks19:54:210
23579997721,8cyclictest1369-21runrttasks23:05:290
2357999764,15cyclictest0-21swapper/022:09:530
2357999764,12cyclictest0-21swapper/021:40:030
2357999763,65cyclictest0-21swapper/000:33:020
2357999763,22cyclictest0-21swapper/021:49:440
23579997624,8cyclictest1041-21cpuspeed_turbos23:59:400
23579997621,11cyclictest27198-21grep23:44:530
23579997616,10cyclictest30493-21sed22:44:460
23579997615,11cyclictest30197-21grep21:35:060
23579997615,11cyclictest30197-21grep21:35:060
23579997525,44cyclictest0-21swapper/000:19:420
23579997519,8cyclictest1369-21runrttasks20:32:570
23579997519,8cyclictest1369-21runrttasks19:57:030
23579997512,10cyclictest24415-21gltestperf23:39:490
23579997512,10cyclictest24415-21gltestperf23:39:490
243799740,5rtkit-daemon0-21swapper/319:10:033
243799730,5rtkit-daemon2436-21rtkit-daemon22:29:481
243799710,4rtkit-daemon2436-21rtkit-daemon22:15:191
243799710,4rtkit-daemon2436-21rtkit-daemon22:15:191
2357999703,12cyclictest0-21swapper/019:09:370
243799690,4rtkit-daemon2436-21rtkit-daemon22:09:411
306372670,3sleep30-21swapper/321:39:313
306372670,3sleep30-21swapper/321:39:313
243799670,6rtkit-daemon0-21swapper/219:24:553
243799670,6rtkit-daemon0-21swapper/219:24:553
243799670,4rtkit-daemon2436-21rtkit-daemon19:44:391
243799660,5rtkit-daemon2436-21rtkit-daemon22:07:561
243799660,5rtkit-daemon2436-21rtkit-daemon21:47:121
243799660,5rtkit-daemon2436-21rtkit-daemon20:39:521
243799650,7rtkit-daemon0-21swapper/223:03:023
243799650,7rtkit-daemon0-21swapper/223:03:023
243799650,5rtkit-daemon2436-21rtkit-daemon22:39:551
243799650,4rtkit-daemon2436-21rtkit-daemon23:55:001
243799650,4rtkit-daemon2436-21rtkit-daemon23:25:161
243799650,4rtkit-daemon2436-21rtkit-daemon22:50:401
243799650,4rtkit-daemon2436-21rtkit-daemon21:42:421
243799650,4rtkit-daemon2436-21rtkit-daemon20:45:451
243799650,4rtkit-daemon2436-21rtkit-daemon19:34:251
243799640,7rtkit-daemon17824-21basename20:04:463
243799640,6rtkit-daemon0-21swapper/219:15:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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