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2026-05-25 - 00:58

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 Sun May 24, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
287909910033,9cyclictest7173-21latency_hist06:07:291
2879299993,45cyclictest1643-21aten_r1power_fr07:42:363
28787999935,57cyclictest0-21swapper/006:42:440
2879099985,46cyclictest0-21swapper/109:07:461
2879099985,46cyclictest0-21swapper/109:07:461
28787999832,8cyclictest15363-21cpuspeed08:02:380
28792999636,9cyclictest18788-21ssh08:07:383
28787999635,54cyclictest0-21swapper/008:22:190
2879299953,45cyclictest4757-21chrt06:57:533
28790999532,9cyclictest6775-21munin-node07:47:581
28787999542,46cyclictest30109-21sh07:36:410
2879299943,49cyclictest19599-21timerandwakeup09:42:533
28790999422,29cyclictest17454-21gltestperf08:52:431
28787999432,12cyclictest0-21swapper/009:47:440
28787999338,48cyclictest0-21swapper/008:07:500
2879299924,52cyclictest0-21swapper/306:52:483
28792999224,11cyclictest19361-21munin-node06:32:573
2879099925,27cyclictest17531-21runrttasks08:04:521
2878799927,36cyclictest0-21swapper/006:39:410
2878799925,36cyclictest0-21swapper/008:12:400
2878799924,40cyclictest0-21swapper/009:52:350
2878799924,40cyclictest0-21swapper/009:52:350
28787999234,51cyclictest0-21swapper/006:47:490
293852910,3sleep226-21rcuc/208:22:422
28787999134,12cyclictest0-21swapper/007:21:000
2879099905,38cyclictest1419-21runrttasks07:42:461
236392900,5sleep023644-21cpuspeed_turbos09:02:350
28787998937,8cyclictest22988-21munin-node05:32:420
2878799893,36cyclictest0-21swapper/009:17:230
2879299884,42cyclictest4134-21iostat08:32:473
2878799884,35cyclictest0-21swapper/006:23:450
2878799883,37cyclictest0-21swapper/007:27:480
2878799874,37cyclictest0-21swapper/008:52:350
2878799874,28cyclictest0-21swapper/009:27:220
28787998735,13cyclictest0-21swapper/009:19:050
2878799869,32cyclictest0-21swapper/007:37:390
2878799867,35cyclictest0-21swapper/010:02:340
2878799865,11cyclictest0-21swapper/006:57:510
28787998638,42cyclictest0-21swapper/007:26:300
28787998633,13cyclictest0-21swapper/008:28:580
28787998633,13cyclictest0-21swapper/008:28:580
2878799863,36cyclictest0-21swapper/009:32:370
28787998624,8cyclictest16829-21sh07:17:260
28787998619,12cyclictest0-21swapper/009:27:450
2878799854,36cyclictest0-21swapper/008:57:400
28787998527,12cyclictest0-21swapper/006:17:470
62772830,5sleep16275-21grep09:22:561
2878799834,35cyclictest0-21swapper/007:42:300
28787998333,10cyclictest0-21swapper/008:24:060
28787998326,14cyclictest0-21swapper/007:02:490
28787998322,12cyclictest0-21swapper/005:47:550
28787998319,9cyclictest17965-21latency_hist05:22:320
28787998219,13cyclictest0-21swapper/008:37:580
2878799805,36cyclictest0-21swapper/008:01:000
28787998033,10cyclictest0-21swapper/009:09:130
28787998033,10cyclictest0-21swapper/009:09:130
28787998023,20cyclictest0-21swapper/007:56:010
28787998022,11cyclictest0-21swapper/009:46:180
28787997932,10cyclictest0-21swapper/007:47:340
28787997829,9cyclictest0-21swapper/006:55:120
2878799778,28cyclictest0-21swapper/005:27:360
28787997721,7cyclictest11947-21latency_hist06:17:290
28787997521,11cyclictest0-21swapper/005:59:010
28787997432,10cyclictest0-21swapper/007:11:200
28787997432,10cyclictest0-21swapper/007:11:200
15922740,6sleep3361ktimersoftd/305:53:023
2878799724,15cyclictest0-21swapper/008:47:510
28787997232,9cyclictest0-21swapper/009:38:140
2878799723,16cyclictest0-21swapper/008:42:480
2661027011,48sleep00-21swapper/004:32:440
248599680,5rtkit-daemon2484-21rtkit-daemon07:54:323
248599680,5rtkit-daemon2484-21rtkit-daemon07:51:402
311622620,3sleep331165-21ssh08:25:263
2879199622,22cyclictest0-21swapper/209:39:132
28790996231,14cyclictest0-21swapper/107:22:511
248599620,5rtkit-daemon2484-21rtkit-daemon06:01:142
2879299613,51cyclictest5818-21fschecks_time07:47:433
2879299613,51cyclictest0-21swapper/309:12:423
28790996136,10cyclictest10964-21systemd-cgroups09:32:211
248599610,13rtkit-daemon2484-21rtkit-daemon07:22:562
2879199604,34cyclictest0-21swapper/209:18:192
2879099605,47cyclictest29669-21irqstats08:22:471
242742603,50sleep20-21swapper/205:32:592
228202605,47sleep10-21swapper/108:12:461
2879099594,47cyclictest0-21swapper/109:37:261
2879299583,48cyclictest0-21swapper/308:52:363
28791995821,15cyclictest0-21swapper/208:47:462
28790995830,12cyclictest0-21swapper/107:02:191
28790995829,14cyclictest0-21swapper/107:32:491
28790995829,13cyclictest0-21swapper/106:39:331
28791995723,26cyclictest0-21swapper/207:00:412
2879099579,42cyclictest16285-21awk08:52:221
2879099574,46cyclictest29904-21ls06:47:531
28790995725,11cyclictest0-21swapper/106:57:281
2879299564,45cyclictest0-21swapper/306:01:443
28791995634,15cyclictest22570-21tune2fs06:37:462
2879199563,47cyclictest0-21swapper/209:02:372
2879099564,46cyclictest0-21swapper/109:48:141
2879099564,46cyclictest0-21swapper/109:43:591
2879099564,46cyclictest0-21swapper/107:07:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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