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2025-12-29 - 14:25

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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 
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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.
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 100 highest latencies:
System rack0slot4s.osadl.org (updated Mon Dec 29, 2025 00:46:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3065402376335,13sleep50-21swapper/519:09:2111
3063162362328,27sleep140-21swapper/1419:06:166
3064282361341,12sleep100-21swapper/1019:07:492
3065302356341,9sleep120-21swapper/1219:09:134
3064732354334,13sleep150-21swapper/1519:08:267
3065582351330,14sleep40-21swapper/419:09:3710
3064692350330,13sleep110-21swapper/1119:08:233
3063692348328,13sleep80-21swapper/819:07:0014
3064912347326,14sleep130-21swapper/1319:08:405
3064422347329,12sleep10-21swapper/119:07:561
3062912347327,13sleep60-21swapper/619:05:5212
3065442346327,12sleep90-21swapper/919:09:2615
3064582346326,13sleep00-21swapper/019:08:110
3029282345324,14sleep20-21swapper/219:05:018
3065082343322,14sleep70-21swapper/719:08:5013
3063222343322,14sleep30-21swapper/319:06:239
5426622590,1sleep4591rcuc/423:50:1510
307002995655,1cyclictest489515-21libvirt-blkstat22:45:1813
307010995553,0cyclictest0-21swapper/1020:00:072
307002995149,2cyclictest0-21swapper/720:00:0713
307010994938,10cyclictest0-21swapper/1023:50:322
307002994847,0cyclictest0-21swapper/723:05:2313
307002994837,0cyclictest211rcu_preempt00:35:0013
306988994743,0cyclictest0-21swapper/323:55:169
307002994640,0cyclictest0-21swapper/723:23:4813
307002994638,4cyclictest502273-21ntpq23:00:2413
307002994541,4cyclictest0-21swapper/719:55:2413
306995994544,0cyclictest0-21swapper/520:00:0811
306988994544,1cyclictest1926-21arpwatch23:40:209
307019994444,0cyclictest0-21swapper/1300:16:085
307010994444,0cyclictest0-21swapper/1020:19:012
307002994441,3cyclictest0-21swapper/723:40:1913
307002994440,4cyclictest0-21swapper/722:05:2613
307002994434,0cyclictest211rcu_preempt22:00:2013
307002994339,4cyclictest296731-21kworker/7:1-events20:20:1613
307002994339,4cyclictest296731-21kworker/7:1-events20:20:1513
307002994339,4cyclictest0-21swapper/719:50:1213
307002994339,0cyclictest0-21swapper/720:05:1713
307019994242,0cyclictest0-21swapper/1323:58:215
307019994242,0cyclictest0-21swapper/1322:40:285
307019994242,0cyclictest0-21swapper/1320:18:445
307019994242,0cyclictest0-21swapper/1319:16:235
307010994242,0cyclictest0-21swapper/1023:21:322
307002994215,23cyclictest88-21ksoftirqd/721:30:2113
306995994242,0cyclictest0-21swapper/523:53:4811
306988994238,4cyclictest0-21swapper/300:35:349
307019994140,1cyclictest174073-21kworker/13:1-events00:38:155
307010994137,0cyclictest0-21swapper/1023:41:232
307002994140,0cyclictest0-21swapper/721:50:3813
307002994139,2cyclictest0-21swapper/723:35:1813
307002994139,2cyclictest0-21swapper/723:35:1813
307002994139,1cyclictest422186-21cut21:25:1513
307002994137,4cyclictest0-21swapper/721:45:1613
307002994137,4cyclictest0-21swapper/720:40:1313
307002994137,0cyclictest0-21swapper/722:35:2413
307002994137,0cyclictest0-21swapper/700:34:4013
306995994141,0cyclictest0-21swapper/523:05:2611
306988994137,4cyclictest0-21swapper/320:15:249
306988994125,16cyclictest0-21swapper/321:05:249
306988994120,17cyclictest280118-21kworker/3:1-events23:23:489
307019994036,4cyclictest0-21swapper/1321:25:025
307010994040,0cyclictest0-21swapper/1022:59:202
307002994036,4cyclictest0-21swapper/720:49:1613
307002994036,0cyclictest0-21swapper/720:15:2613
307002994012,24cyclictest0-21swapper/720:25:1713
307002994012,24cyclictest0-21swapper/720:25:1713
307002994012,24cyclictest0-21swapper/700:26:0213
306995994040,0cyclictest0-21swapper/523:31:5011
306995994040,0cyclictest0-21swapper/523:31:4911
306988994037,3cyclictest0-21swapper/320:05:169
307019993939,0cyclictest0-21swapper/1323:47:545
307019993939,0cyclictest0-21swapper/1321:23:405
307019993939,0cyclictest0-21swapper/1319:36:175
307010993939,0cyclictest0-21swapper/1023:27:192
307010993939,0cyclictest0-21swapper/1023:27:192
307010993939,0cyclictest0-21swapper/1022:14:522
307010993939,0cyclictest0-21swapper/1020:54:462
307010993939,0cyclictest0-21swapper/1020:42:512
307002993936,0cyclictest0-21swapper/719:37:5813
306995993939,0cyclictest0-21swapper/522:40:2811
306995993939,0cyclictest0-21swapper/520:19:0011
306988993926,4cyclictest211rcu_preempt00:27:099
307019993838,0cyclictest0-21swapper/1322:46:465
307019993838,0cyclictest0-21swapper/1300:07:245
307019993826,12cyclictest0-21swapper/1320:00:085
307010993838,0cyclictest0-21swapper/1022:46:452
307010993838,0cyclictest0-21swapper/1022:43:442
307010993838,0cyclictest0-21swapper/1021:25:492
307002993835,3cyclictest0-21swapper/722:41:3313
307002993834,4cyclictest0-21swapper/723:55:5513
307002993834,4cyclictest0-21swapper/700:24:1313
307002993834,0cyclictest0-21swapper/721:20:2213
307002993834,0cyclictest0-21swapper/719:12:5213
307002993833,5cyclictest0-21swapper/722:50:1813
307002993830,4cyclictest0-21swapper/700:17:0713
30700299380,34cyclictest0-21swapper/721:10:1413
306995993838,0cyclictest0-21swapper/522:08:1211
306995993833,5cyclictest0-21swapper/521:25:0211
306988993834,4cyclictest311994-21daemon-init19:15:009
306988993834,4cyclictest280118-21kworker/3:1-events22:35:249
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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