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2026-03-23 - 05:50
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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack1slot8.osadl.org (updated Mon Mar 23, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29279919311853,68cyclictest11929-21crond19:35:010
28622927894,27sleep10-21swapper/119:09:421
2928994942,469cyclictest3084-21munin-node19:10:141
292799456393,57cyclictest0-21swapper/019:10:150
292899318286,16cyclictest11928-21crond19:35:001
29279913314,113cyclictest0-21swapper/021:59:590
29279912711,110cyclictest0-21swapper/020:25:590
29279911714,97cyclictest0-21swapper/023:02:590
29279910996,8cyclictest0-21swapper/023:09:590
228699950,10rtkit-daemon0-21swapper/123:44:091
2927998914,60cyclictest0-21swapper/000:01:590
144128835,37sleep00-21swapper/019:05:140
2927998415,54cyclictest0-21swapper/019:59:590
2927998354,12cyclictest0-21swapper/023:19:390
292899795,36cyclictest0-21swapper/120:40:231
2928997916,27cyclictest0-21swapper/123:59:001
292899786,31cyclictest0-21swapper/100:35:241
2928997822,18cyclictest0-21swapper/121:14:341
292899776,35cyclictest0-21swapper/122:36:011
2928997716,27cyclictest0-21swapper/120:27:591
292899768,29cyclictest0-21swapper/122:20:201
292899767,29cyclictest0-21swapper/123:00:591
292899766,19cyclictest0-21swapper/100:12:391
2928997618,19cyclictest0-21swapper/123:11:521
2928997617,19cyclictest0-21swapper/122:15:241
292899758,29cyclictest0-21swapper/119:15:181
292899756,38cyclictest0-21swapper/120:20:211
2928997512,30cyclictest0-21swapper/121:05:591
2928997425,8cyclictest26213-21df_inode00:25:171
2928997423,18cyclictest0-21swapper/123:05:161
2928997415,17cyclictest0-21swapper/119:50:191
2928997414,28cyclictest0-21swapper/122:42:591
2928997413,29cyclictest0-21swapper/123:50:581
228699740,5rtkit-daemon2285-21rtkit-daemon22:13:470
228699740,3rtkit-daemon2285-21rtkit-daemon23:41:330
292899737,31cyclictest0-21swapper/123:27:141
2928997316,20cyclictest0-21swapper/120:35:181
2928997315,28cyclictest0-21swapper/100:20:001
2928997313,27cyclictest0-21swapper/123:38:001
2928997313,26cyclictest0-21swapper/119:37:591
2928997312,28cyclictest0-21swapper/121:29:001
2928997312,19cyclictest0-21swapper/120:45:231
292799733,64cyclictest1189-21snmpd22:21:540
292799732,65cyclictest28330-21munin-node20:20:120
292899727,31cyclictest0-21swapper/100:30:121
292899726,36cyclictest0-21swapper/121:35:591
292899726,31cyclictest0-21swapper/122:45:171
292899724,38cyclictest0-21swapper/122:33:421
292899724,38cyclictest0-21swapper/122:33:411
2928997215,28cyclictest0-21swapper/120:33:581
2928997215,19cyclictest0-21swapper/122:25:141
2928997214,24cyclictest0-21swapper/122:50:591
2928997213,27cyclictest0-21swapper/121:52:591
2928997213,26cyclictest0-21swapper/121:00:001
2928997212,30cyclictest0-21swapper/120:10:001
2928997212,29cyclictest0-21swapper/120:54:581
2928997212,28cyclictest0-21swapper/100:24:581
2928997114,27cyclictest0-21swapper/121:45:591
2928997114,27cyclictest0-21swapper/121:45:581
2928997113,25cyclictest0-21swapper/120:03:591
2928997112,25cyclictest0-21swapper/120:14:581
292799713,41cyclictest5120-21ssh21:50:200
292799712,53cyclictest25399-21latency_hist21:30:010
2928997015,27cyclictest0-21swapper/122:07:591
2928997012,30cyclictest0-21swapper/100:06:001
2928997011,28cyclictest0-21swapper/119:59:591
292799702,61cyclictest25660-21aten_r1power_en21:30:130
292799702,51cyclictest6523-21latency_hist19:20:000
292799702,51cyclictest1673-21latency_hist00:40:010
292799702,38cyclictest22914-21ssh00:20:000
2928996916,27cyclictest0-21swapper/119:49:591
2928996912,26cyclictest0-21swapper/122:02:591
2928996910,29cyclictest0-21swapper/123:20:591
292799693,59cyclictest16835-21sed19:45:260
2927996928,34cyclictest0-21swapper/000:12:570
292899686,30cyclictest0-21swapper/119:40:271
2928996816,26cyclictest0-21swapper/122:58:591
2928996812,29cyclictest0-21swapper/121:19:591
292799684,58cyclictest0-21swapper/000:25:090
292799682,60cyclictest21486-21ssh21:21:530
292799682,59cyclictest4427-21latency_hist21:50:020
292799682,59cyclictest4427-21latency_hist21:50:010
292799682,50cyclictest16707-21latency_hist21:15:010
292799678,44cyclictest0-21swapper/023:28:000
292799676,54cyclictest0-21swapper/022:05:200
292799675,55cyclictest0-21swapper/021:35:220
292799673,35cyclictest26378-21munin-run20:15:010
292799672,34cyclictest9239-21ssh23:55:130
2927996714,47cyclictest0-21swapper/021:16:590
2928996615,26cyclictest0-21swapper/120:20:001
2928996613,29cyclictest0-21swapper/123:32:581
292799663,56cyclictest11587-21ksmtuned22:01:270
292799663,56cyclictest0-21swapper/022:46:510
292799663,35cyclictest24727-21latency_hist23:25:020
292799662,58cyclictest30949-21sh22:36:170
292799662,57cyclictest30267-21latency_hist23:35:010
292799662,57cyclictest20111-21ssh22:17:070
292899656,30cyclictest0-21swapper/121:00:141
292799655,54cyclictest0-21swapper/020:40:260
2927996543,16cyclictest0-21swapper/022:27:400
2927996529,29cyclictest0-21swapper/021:00:230
292799652,57cyclictest17539-21cut19:50:130
292799652,47cyclictest8452-21latency_hist19:25:020
2928996414,23cyclictest0-21swapper/119:30:011
292799645,53cyclictest0-21swapper/023:40:020
2927996444,14cyclictest0-21swapper/019:35:210
292799642,56cyclictest8573-21sh23:53:260
292799642,56cyclictest1568-21runrttasks20:47:590
292799642,55cyclictest13937-21diskmemload23:11:570
292799642,41cyclictest835-21lldpad00:24:260
2928996312,26cyclictest0-21swapper/119:23:591
292799635,52cyclictest0-21swapper/022:31:540
292799635,52cyclictest0-21swapper/022:31:530
292799635,44cyclictest0-21swapper/019:26:040
292799632,55cyclictest13937-21diskmemload22:57:250
292899629,25cyclictest0-21swapper/121:22:581
2928996218,20cyclictest0-21swapper/121:31:581
2927996225,19cyclictest0-21swapper/020:10:000
292799622,54cyclictest5237-21taskset23:46:330
292799622,32cyclictest10349-21latency_hist21:00:000
2927996213,32cyclictest0-21swapper/000:10:000
292799615,49cyclictest0-21swapper/020:30:230
292799613,35cyclictest30003-21ssh00:30:500
292799612,53cyclictest7043-21ssh22:51:350
292799612,53cyclictest28176-21latency_hist20:20:000
292799612,53cyclictest2441-21ssh22:44:460
292799612,44cyclictest32010-21ssh21:40:230
2927996115,33cyclictest0-21swapper/021:09:590
292799602,53cyclictest760-17auditd20:05:010
292799602,52cyclictest7426-21latency20:50:200
2927996015,33cyclictest0-21swapper/020:37:580
292899595,30cyclictest0-21swapper/123:16:591
228699590,5rtkit-daemon2285-21rtkit-daemon23:47:051
292799582,51cyclictest15126-21chrt19:40:580
2928995518,31cyclictest0-21swapper/121:44:581
2928995316,32cyclictest0-21swapper/122:10:591
2928995314,30cyclictest0-21swapper/100:00:141
228699520,4rtkit-daemon2285-21rtkit-daemon21:59:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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