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2026-05-02 - 15:38

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 Sat May 02, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
242599910142,53cyclictest0-21swapper/009:58:120
242599910122,9cyclictest121850irq/46-eth007:02:110
242599910122,9cyclictest121850irq/46-eth007:02:110
2425999975,27cyclictest0-21swapper/008:53:280
2425999954,15cyclictest0-21swapper/008:03:280
24264999430,47cyclictest0-21swapper/107:06:041
2426499933,13cyclictest0-21swapper/107:02:431
2426499933,13cyclictest0-21swapper/107:02:431
2425999935,26cyclictest0-21swapper/009:43:380
24264999133,50cyclictest25401-21sed10:18:331
24264999133,43cyclictest0-21swapper/109:04:411
2425999913,9cyclictest1419-21runrttasks10:12:010
24259999117,8cyclictest0-21swapper/009:08:220
24259999117,8cyclictest0-21swapper/009:08:220
2425999904,27cyclictest0-21swapper/008:13:060
24264998933,41cyclictest0-21swapper/107:14:341
2425999895,39cyclictest0-21swapper/008:13:310
2426499884,31cyclictest0-21swapper/108:47:071
2425999885,26cyclictest0-21swapper/006:11:510
2425999885,23cyclictest21858-21memory07:03:320
2425999884,37cyclictest0-21swapper/007:28:170
2425999883,78cyclictest0-21swapper/007:16:220
24259998820,12cyclictest0-21swapper/008:43:430
2426499874,36cyclictest0-21swapper/109:58:331
2425999874,37cyclictest0-21swapper/010:21:480
2425999865,34cyclictest1419-21runrttasks10:23:320
2425999865,27cyclictest0-21swapper/009:01:420
2425999864,12cyclictest24251-21cyclictest04:58:130
2426499859,33cyclictest0-21swapper/109:28:021
2425999854,26cyclictest0-21swapper/009:36:150
2425999853,22cyclictest0-21swapper/007:56:050
2426499843,32cyclictest0-21swapper/109:38:021
2426499843,32cyclictest0-21swapper/107:53:371
2426499843,10cyclictest7170-21df09:53:161
24264998421,15cyclictest0-21swapper/105:58:371
2425999845,24cyclictest10592-21munin-node08:23:410
2425999845,24cyclictest10592-21munin-node08:23:410
24259998421,7cyclictest3892-21latency_hist05:23:120
24264998323,14cyclictest0-21swapper/108:21:501
24264998323,14cyclictest0-21swapper/107:22:091
110422830,4sleep311045-21df_abs08:23:203
110422830,4sleep311045-21df_abs08:23:203
2426499823,35cyclictest0-21swapper/109:44:531
24264998226,9cyclictest28487-21timerwakeupswit05:03:441
24264998225,9cyclictest5537-21sendmail_mailqu05:23:421
24264998225,13cyclictest0-21swapper/107:48:201
2426499822,38cyclictest15301-21ssh07:42:071
2426499822,36cyclictest15373-21ssh10:03:371
2426499814,33cyclictest0-21swapper/108:56:561
2426499813,30cyclictest0-21swapper/108:12:341
24264998117,9cyclictest3893-21awk05:23:121
24264998113,9cyclictest4718-21proc_pri09:48:301
24264998113,9cyclictest4718-21proc_pri09:48:301
2425999815,27cyclictest0-21swapper/008:21:120
2425999815,25cyclictest0-21swapper/008:51:150
2425999815,25cyclictest0-21swapper/007:21:510
2425999814,37cyclictest0-21swapper/007:23:240
2425999814,25cyclictest0-21swapper/007:47:270
2426499804,33cyclictest0-21swapper/110:23:311
24264998023,13cyclictest0-21swapper/107:46:251
2426499802,32cyclictest20267-21ssh08:37:241
24264998010,31cyclictest0-21swapper/108:23:381
24264998010,31cyclictest0-21swapper/108:23:381
2425999805,26cyclictest0-21swapper/008:32:570
2426499795,36cyclictest0-21swapper/108:48:321
2426499793,36cyclictest0-21swapper/108:14:261
2426499793,21cyclictest10813-21ssh07:33:391
24264997925,9cyclictest29215-21needreboot06:13:351
24264997925,9cyclictest29215-21needreboot06:13:351
24264997923,13cyclictest0-21swapper/109:08:111
24264997923,13cyclictest0-21swapper/109:08:111
2425999795,25cyclictest0-21swapper/009:24:030
2426499784,32cyclictest0-21swapper/105:33:131
2425999785,14cyclictest0-21swapper/009:04:570
2425999784,29cyclictest0-21swapper/008:42:510
2426499774,25cyclictest0-21swapper/106:18:211
2426499773,36cyclictest8685-21ssh07:32:381
2426499773,34cyclictest0-21swapper/110:12:321
2426499773,34cyclictest0-21swapper/108:58:171
2426499772,41cyclictest17002-21diskmemload09:39:121
2426499753,34cyclictest0-21swapper/108:30:451
2426499753,32cyclictest0-21swapper/107:09:071
2426499743,33cyclictest0-21swapper/108:07:411
2426499742,38cyclictest0-21swapper/108:42:091
24264997412,9cyclictest5652-21cat07:28:081
2426499735,33cyclictest0-21swapper/109:31:361
2426499713,9cyclictest0-21swapper/106:49:421
24264997123,9cyclictest23547-21cpuspeed_turbos06:03:241
2426499705,34cyclictest0-21swapper/110:16:231
2426599664,55cyclictest0-21swapper/208:43:172
130762663,55sleep30-21swapper/309:13:273
24266996433,15cyclictest0-21swapper/307:13:393
2426599625,50cyclictest0-21swapper/207:43:292
2426499624,12cyclictest0-21swapper/109:13:361
2425999624,50cyclictest0-21swapper/009:53:020
2425999624,50cyclictest0-21swapper/009:53:020
24259996228,9cyclictest18077-21fschecks_time08:33:240
24266996131,13cyclictest0-21swapper/310:18:233
24266996130,11cyclictest1287-21snmpd09:08:273
24266996130,11cyclictest1287-21snmpd09:08:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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