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2026-04-26 - 17:03

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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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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 rack3slot6s.osadl.org (updated Sun Apr 26, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3837211594,16sleep00-21swapper/007:07:000
3813211497,12sleep10-21swapper/107:06:411
2220211088,16sleep30-21swapper/307:05:103
3896210279,6sleep20-21swapper/207:07:462
73412830,0sleep00-21swapper/010:36:350
246532720,1sleep00-21swapper/012:39:090
209592710,0sleep30-21swapper/309:43:483
262122690,0sleep10-21swapper/109:49:351
238862640,0sleep00-21swapper/011:28:390
238862640,0sleep00-21swapper/011:28:380
4100993616,18cyclictest0-21swapper/309:55:113
4100992812,15cyclictest4096-21cyclictest11:45:123
4100992622,2cyclictest0-21swapper/311:00:123
322712260,0sleep20-21swapper/211:37:072
31542250,0sleep20-21swapper/211:06:042
257162240,1sleep20-21swapper/209:48:482
4099992115,4cyclictest0-21swapper/212:15:122
409799210,2cyclictest0-21swapper/011:20:120
410099201,2cyclictest0-21swapper/308:50:133
4099992015,3cyclictest5059-21kworker/u8:209:39:042
409799200,18cyclictest0-21swapper/008:40:120
4099991916,2cyclictest4602-21kworker/u8:110:48:032
292322190,2sleep011-21rcuc/010:25:500
4099991816,1cyclictest0-21swapper/211:20:122
4099991815,2cyclictest4602-21kworker/u8:110:41:042
4099991815,2cyclictest20768-21kworker/u8:109:10:052
409999180,2cyclictest0-21swapper/208:15:132
409799180,16cyclictest0-21swapper/007:35:110
267622180,0sleep20-21swapper/209:50:082
410099172,13cyclictest22778-21ssh12:36:063
4099991714,2cyclictest19644-21kworker/u8:312:21:042
409999171,14cyclictest0-21swapper/208:30:012
409999171,12cyclictest0-21swapper/207:26:042
410099162,12cyclictest5672-21ssh11:43:513
410099161,3cyclictest0-21swapper/311:13:233
410099160,14cyclictest11667-21ssh11:15:183
409999161,3cyclictest0-21swapper/208:11:012
4099991613,2cyclictest16530-21kworker/u8:210:54:052
4099991611,3cyclictest13874-21df10:10:132
409999161,13cyclictest0-21swapper/209:58:332
409999160,11cyclictest0-21swapper/211:16:042
409899161,13cyclictest32666-21munin-run08:20:001
409899161,13cyclictest0-21swapper/112:23:571
4097991611,3cyclictest11023-21df_abs08:45:140
410099153,11cyclictest0-21swapper/310:10:073
410099152,2cyclictest0-21swapper/311:25:483
410099152,2cyclictest0-21swapper/311:25:483
4100991512,2cyclictest0-21swapper/312:11:393
4100991512,2cyclictest0-21swapper/312:09:193
4100991512,2cyclictest0-21swapper/310:40:143
4100991512,2cyclictest0-21swapper/310:26:293
4100991512,2cyclictest0-21swapper/309:45:193
410099151,12cyclictest29256-21ssh09:51:523
4100991511,2cyclictest0-21swapper/312:24:523
410099151,12cyclictest0-21swapper/311:55:523
4100991511,2cyclictest0-21swapper/309:15:003
4100991510,3cyclictest3932-21ssh10:00:113
4100991510,3cyclictest0-21swapper/307:55:133
4100991510,3cyclictest0-21swapper/307:55:133
409999151,9cyclictest28757-1kworker/u9:212:09:042
4099991512,2cyclictest32440-21kworker/u8:112:13:042
4099991512,2cyclictest27213-21kworker/u8:209:20:012
409999151,12cyclictest12339-21date09:35:002
4099991510,3cyclictest18316-21ssh10:15:122
409999150,13cyclictest0-21swapper/211:10:172
409899151,12cyclictest3140-21iostat08:25:161
4098991510,3cyclictest15501-21sh12:29:211
4098991510,3cyclictest0-21swapper/110:51:411
4098991510,3cyclictest0-21swapper/109:50:151
409899150,3cyclictest0-21swapper/110:22:411
409899150,2cyclictest0-21swapper/107:35:011
409799151,12cyclictest22814-21apt-get07:55:120
409799151,12cyclictest22814-21apt-get07:55:120
4097991510,3cyclictest17699-21ssh09:40:140
409799150,13cyclictest0-21swapper/011:35:000
409799150,13cyclictest0-21swapper/011:35:000
410099149,3cyclictest0-21swapper/310:20:143
410099148,4cyclictest20549-21diskmemload10:33:493
410099143,10cyclictest0-21swapper/312:28:163
410099142,11cyclictest0-21swapper/310:58:263
410099141,2cyclictest0-21swapper/308:15:133
410099141,12cyclictest0-21swapper/311:35:023
4100991411,2cyclictest0-21swapper/310:45:123
4100991411,2cyclictest0-21swapper/310:05:513
4100991411,2cyclictest0-21swapper/309:23:413
4100991411,2cyclictest0-21swapper/308:30:113
4100991410,2cyclictest0-21swapper/309:35:173
410099140,3cyclictest0-21swapper/311:53:323
410099140,12cyclictest0-21swapper/309:32:233
410099140,12cyclictest0-21swapper/307:45:183
4099991411,2cyclictest8907-21kworker/u8:011:52:042
4099991411,2cyclictest28807-21kworker/u8:011:40:042
4099991411,2cyclictest28701-21kworker/u8:007:12:042
4099991411,2cyclictest19545-21kworker/u8:110:07:042
4099991411,2cyclictest14710-21kworker/u8:010:00:052
4099991411,2cyclictest14182-21kworker/u8:211:57:042
4099991411,2cyclictest10595-21kworker/u8:007:51:042
409999140,2cyclictest18203-21unixbench_singl07:41:042
409999140,2cyclictest0-21swapper/210:28:042
409999140,12cyclictest0-21swapper/209:40:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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