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2026-08-31 - 10:26
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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 Aug 31, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
249232796777,12sleep10-21swapper/119:09:491
2497899755685,50cyclictest0-21swapper/120:20:161
2497799751683,53cyclictest0-21swapper/020:20:170
2497899478426,24cyclictest0-21swapper/119:10:201
2497799478420,17cyclictest25784-21strings19:10:200
246982308285,17sleep00-21swapper/019:07:300
1499321280,4sleep014992-21sed23:30:020
2497799803,7cyclictest25573-21latency_hist22:50:010
24977997724,46cyclictest88850irq/46-eth0-tx-22:40:090
2497799765,16cyclictest0-21swapper/000:25:010
2497799756,53cyclictest0-21swapper/023:40:020
2497799755,15cyclictest0-21swapper/022:35:000
2497799745,16cyclictest0-21swapper/023:22:240
2497799743,53cyclictest2928-21unixbench_multi19:35:250
2497799743,11cyclictest0-21swapper/000:38:290
24977997416,52cyclictest9168-21ssh22:19:160
24977997416,52cyclictest88850irq/46-eth0-tx-22:10:290
2497799735,15cyclictest0-21swapper/023:55:200
2497799733,10cyclictest17945-21idleruntime-cro20:20:000
2497799728,6cyclictest0-21swapper/023:47:490
2497799725,16cyclictest0-21swapper/021:18:050
2497799725,15cyclictest0-21swapper/020:10:020
2497899716,16cyclictest0-21swapper/121:18:141
2497799717,6cyclictest0-21swapper/021:52:200
2497799717,6cyclictest0-21swapper/021:52:190
2497799715,15cyclictest0-21swapper/021:27:040
2497899705,16cyclictest0-21swapper/121:38:131
2497799705,15cyclictest0-21swapper/023:00:010
24977997018,46cyclictest88850irq/46-eth0-tx-23:02:560
2497899696,15cyclictest0-21swapper/121:54:161
2497899696,15cyclictest0-21swapper/121:54:151
2497799698,9cyclictest0-21swapper/022:35:380
2497799697,54cyclictest0-21swapper/023:06:580
2497799696,6cyclictest0-21swapper/021:34:200
2497799695,16cyclictest0-21swapper/023:50:470
2497799695,16cyclictest0-21swapper/022:00:290
2497799695,16cyclictest0-21swapper/000:10:250
2497799695,15cyclictest0-21swapper/020:05:150
24977996912,5cyclictest0-21swapper/021:21:490
2497899687,55cyclictest17864-21kworker/1:023:45:551
2497899685,16cyclictest0-21swapper/123:43:281
2497899685,16cyclictest0-21swapper/123:43:271
2497899685,16cyclictest0-21swapper/100:34:191
2497899685,15cyclictest0-21swapper/122:04:281
2497899684,14cyclictest0-21swapper/123:26:201
24978996810,11cyclictest0-21swapper/123:36:341
2497799685,16cyclictest0-21swapper/022:24:560
2497799685,16cyclictest0-21swapper/021:48:140
2497799685,16cyclictest0-21swapper/019:45:020
2497799684,9cyclictest17644-21latency_hist23:35:010
2497799684,56cyclictest18021-21ssh21:35:180
2497799682,57cyclictest4494-21kworker/0:000:34:430
24977996810,6cyclictest0-21swapper/000:09:530
132962680,3chrt13295-21pgrep21:25:411
2497899676,15cyclictest0-21swapper/122:47:471
2497899675,16cyclictest0-21swapper/100:36:401
2497899674,13cyclictest0-21swapper/122:52:391
24978996714,47cyclictest24566-21ssh21:47:011
2497799676,16cyclictest0-21swapper/023:43:510
2497799676,16cyclictest0-21swapper/023:43:500
2497799675,55cyclictest0-21swapper/023:19:410
2497799675,45cyclictest0-21swapper/021:13:590
2497799675,16cyclictest0-21swapper/020:45:010
2497799675,16cyclictest0-21swapper/000:02:120
2497799675,14cyclictest0-21swapper/019:55:250
2497799674,14cyclictest0-21swapper/021:40:140
2497799673,8cyclictest12530-21munin-run20:05:010
2497799673,57cyclictest2664-21vmstat22:05:290
24977996711,7cyclictest0-21swapper/023:12:150
2497899666,16cyclictest0-21swapper/121:21:091
2497899665,16cyclictest0-21swapper/121:32:251
2497899665,15cyclictest0-21swapper/120:45:171
2497899665,15cyclictest0-21swapper/120:01:271
2497899664,9cyclictest32501-21unixbench_multi00:00:281
2497899664,57cyclictest4006-21sh00:09:061
2497899664,13cyclictest0-21swapper/122:42:591
2497899663,7cyclictest1280-21crond20:30:011
2497799665,15cyclictest0-21swapper/022:50:150
2497799665,15cyclictest0-21swapper/022:25:060
2497799665,15cyclictest0-21swapper/021:56:440
2497799665,15cyclictest0-21swapper/019:15:120
2497799663,9cyclictest7410-21df00:15:150
2497799662,7cyclictest88850irq/46-eth0-tx-00:25:210
2497799662,7cyclictest5446-21munin-node19:45:110
2497899658,12cyclictest0-21swapper/100:23:431
2497899656,16cyclictest0-21swapper/121:43:231
2497899656,15cyclictest0-21swapper/123:05:101
2497899655,17cyclictest0-21swapper/119:30:221
2497899655,16cyclictest0-21swapper/100:26:381
2497899655,15cyclictest0-21swapper/123:03:591
24978996510,7cyclictest16942-21needreboot20:15:191
2497799656,16cyclictest0-21swapper/021:00:010
2497799653,8cyclictest7688-21hwlatdetect19:50:150
2497799653,8cyclictest30374-21idleruntime-cro19:25:010
2497799652,55cyclictest1189-21snmpd21:01:460
2497899646,7cyclictest29223-21ntpq22:55:231
2497899646,16cyclictest0-21swapper/123:54:131
2497899645,15cyclictest0-21swapper/100:10:031
2497899645,14cyclictest0-21swapper/122:28:451
2497899645,14cyclictest0-21swapper/122:21:171
2497899644,8cyclictest1568-21runrttasks00:15:161
24978996410,6cyclictest3703-21diskmemload21:11:571
2497799645,16cyclictest0-21swapper/020:37:260
2497799645,16cyclictest0-21swapper/020:25:230
2497799643,7cyclictest27109-21munin-node20:45:140
24977996419,36cyclictest29263-21grep20:50:160
24977996413,45cyclictest32174-21crond19:30:000
2497899636,15cyclictest0-21swapper/123:21:101
2497899636,15cyclictest0-21swapper/123:10:181
2497899635,19cyclictest0-21swapper/121:01:371
2497899635,17cyclictest0-21swapper/120:55:001
2497899635,17cyclictest0-21swapper/120:36:371
2497899635,15cyclictest0-21swapper/123:56:091
2497899635,15cyclictest0-21swapper/122:35:411
2497899635,13cyclictest0-21swapper/121:59:481
2497899635,12cyclictest0-21swapper/122:34:061
24978996313,42cyclictest9043-21ssh22:18:481
2497899626,49cyclictest0-21swapper/120:05:131
2497899626,16cyclictest0-21swapper/123:30:401
2497899625,26cyclictest0-21swapper/119:45:121
2497899625,15cyclictest0-21swapper/122:06:521
2497899625,15cyclictest0-21swapper/119:55:131
2497899623,9cyclictest5349-21unixbench_singl22:10:281
2497899623,8cyclictest16134-21munin-run20:15:001
2497899622,10cyclictest7689-21wc19:50:141
2497799625,14cyclictest0-21swapper/019:30:140
2497899616,16cyclictest0-21swapper/123:15:241
2497899615,16cyclictest0-21swapper/119:37:011
2497799615,16cyclictest0-21swapper/021:05:140
2497799615,16cyclictest0-21swapper/020:35:010
2497899606,17cyclictest0-21swapper/120:55:131
2497899606,15cyclictest0-21swapper/119:25:171
2497899605,16cyclictest0-21swapper/119:22:141
2497899605,16cyclictest0-21swapper/119:15:131
2497899605,15cyclictest0-21swapper/120:40:141
2497899605,15cyclictest0-21swapper/120:30:121
2497899605,15cyclictest0-21swapper/119:40:111
2497899594,48cyclictest2621-21munin-node21:05:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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