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2025-12-11 - 09:01
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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 100 highest latencies:
System rackeslot8.osadl.org (updated Thu Dec 11, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
164919222680,1sleep00-21swapper/023:50:190
123424522330,1sleep30-21swapper/319:05:183
1235908992522,1cyclictest0-21swapper/323:25:003
123590899251,21cyclictest1518255-21turbostat22:30:013
123590899227,5cyclictest1307228-21taskset20:04:563
1235908992219,1cyclictest0-21swapper/322:20:013
1235908992118,1cyclictest0-21swapper/320:25:003
1235908992117,1cyclictest0-21swapper/322:25:003
1235908992017,1cyclictest0-21swapper/323:15:153
1235908992017,1cyclictest0-21swapper/319:40:153
123590899201,14cyclictest1313944-21taskset20:10:013
1235908991916,1cyclictest0-21swapper/321:40:183
1235908991916,1cyclictest0-21swapper/319:15:013
123590899191,13cyclictest1397110-21taskset21:15:003
123590899191,13cyclictest1345127-21turbostat20:35:003
1235908991815,1cyclictest0-21swapper/323:50:203
1235908991815,1cyclictest0-21swapper/321:20:013
1235908991815,1cyclictest0-21swapper/300:10:183
123590899181,13cyclictest1712620-21taskset00:30:133
123590899181,13cyclictest1591033-21turbostat23:15:003
123590899181,13cyclictest1567280-21taskset23:00:123
123590899181,13cyclictest1461603-21taskset21:55:123
123590899181,13cyclictest1461132-21taskset21:54:403
123590899181,13cyclictest1298465-21taskset19:55:193
123590899176,7cyclictest13645512sleep320:50:173
1235908991714,1cyclictest0-21swapper/323:39:173
1235908991714,1cyclictest0-21swapper/319:35:003
1235908991714,1cyclictest0-21swapper/300:35:183
1235908991714,1cyclictest0-21swapper/300:05:213
123590899171,12cyclictest1566952-21taskset22:59:593
123590899171,12cyclictest1482982-21taskset22:05:223
123590899171,12cyclictest1426679-21taskset21:30:243
1235908991613,1cyclictest0-21swapper/323:55:113
1235908991613,1cyclictest0-21swapper/322:50:253
1235908991613,1cyclictest0-21swapper/321:45:153
1235908991613,1cyclictest0-21swapper/321:22:183
1235908991613,1cyclictest0-21swapper/321:22:173
123590899161,12cyclictest1704186-21taskset00:25:003
123590899161,12cyclictest1688344-21chrt00:15:023
123590899161,12cyclictest1664711-21taskset00:00:143
123590899161,12cyclictest1582867-21taskset23:09:413
123590899161,12cyclictest1526532-21taskset22:35:043
123590899161,12cyclictest1524359-21taskset22:30:353
123590899161,12cyclictest1492639-21chrt22:12:303
123590899161,12cyclictest1476681-21chrt22:03:213
123590899161,12cyclictest1388590-21taskset21:05:233
123590899161,12cyclictest1376896-21taskset21:00:143
123590899161,12cyclictest1338514-21chrt20:26:033
123590899161,12cyclictest1274959-21chrt19:35:193
123590899161,12cyclictest1250419-21taskset19:16:083
123590899161,11cyclictest1435576-21chrt21:36:173
123590899161,11cyclictest1363895-21turbostat20:50:003
123590899160,12cyclictest1637932-21taskset23:40:473
123590899160,12cyclictest1538447-21taskset22:40:173
15833642151,5sleep11583378-21ssh23:10:131
147598150,2rtkit-daemon0-21swapper/221:44:532
1235908991513,1cyclictest0-21swapper/323:30:173
1235908991513,1cyclictest0-21swapper/319:50:183
1235908991512,1cyclictest0-21swapper/320:15:153
123590899151,12cyclictest1319689-21chrt20:11:013
123590899151,11cyclictest1704526-21chrt00:25:123
123590899151,11cyclictest1640036-21chrt23:45:053
123590899151,11cyclictest1613649-21taskset23:25:453
123590899151,11cyclictest1370424-21taskset20:55:093
123590899151,11cyclictest1282356-21taskset19:45:053
123590899151,11cyclictest1257313-21taskset19:25:093
123590899151,10cyclictest1413572-21taskset21:25:153
123590899150,12cyclictest1542978-21taskset22:45:133
123590899150,12cyclictest1256712-21chrt19:20:363
123590899150,11cyclictest1357633-21taskset20:44:553
15193302141,11sleep01520234-21kthreadcore22:30:170
13457832141,2sleep10-21swapper/120:35:171
123590899141,10cyclictest1345550-21taskset20:35:143
14347232131,9sleep11429402-21/usr/sbin/munin21:35:241
14854062120,9sleep01485479-21munin-run22:10:010
147598120,8rtkit-daemon1590138-21ssh23:12:520
147598120,7rtkit-daemon1505989-21grep22:20:180
14682242121,4sleep21404240-21kworker/u16:4+xprtiod21:57:252
13945412120,9sleep01394668-21python321:10:220
16929122110,4sleep00-21swapper/000:15:190
16148832110,8sleep11614889-21ssh23:28:451
14947502110,8sleep21495674-21cut22:15:162
147598110,7rtkit-daemon1671377-21sh00:03:451
147598110,7rtkit-daemon1491439-21python322:10:240
147598110,5rtkit-daemon22110-21packagekitd22:00:522
14534832110,7sleep11453491-21ssh21:50:051
14037632110,8sleep21403770-21sh21:17:132
17034682101,7sleep11703474-21ssh00:23:231
16875782100,7sleep01687584-21ssh00:13:480
16790642100,7sleep01679071-21sh00:07:500
15753712100,7sleep01575486-21/usr/sbin/munin23:05:150
15592152100,7sleep11559360-21grep22:55:141
147598100,6rtkit-daemon1644371-21kthreadcore23:45:170
147598100,6rtkit-daemon1542109-21sh22:44:091
147598100,6rtkit-daemon1540-21sendmail-mta00:14:221
147598100,6rtkit-daemon1435218-21sh21:35:312
147598100,3rtkit-daemon1242416-21munin-node19:26:592
147598100,2rtkit-daemon1695808-21ssh00:19:121
12829822100,1sleep11283947-21kthreadcore19:45:201
12453832100,7sleep21246339-21kthreadcore19:15:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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