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2026-05-29 - 22:10
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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
Characteristics of the 100 highest latencies:
System rackdslot0.osadl.org (updated Fri May 29, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
116099242,4cyclictest0-21swapper/008:20:010
116199230,22cyclictest0-21swapper/111:52:331
116299213,2cyclictest24707-21timerwakeupswit12:00:212
1162992016,3cyclictest0-21swapper/207:12:522
116199202,17cyclictest0-21swapper/110:00:131
1161992017,2cyclictest3985-21H222:10:211
1161992017,2cyclictest0-21swapper/111:00:191
1161992017,2cyclictest0-21swapper/108:15:011
116099204,15cyclictest0-21swapper/010:40:140
116099203,11cyclictest0-21swapper/007:33:230
1162991916,2cyclictest993-21dbus-daemon11:25:202
1162991916,2cyclictest28-21ksoftirqd/209:38:322
1162991916,2cyclictest25099-21grep11:10:162
1162991915,3cyclictest3976-21H222:10:212
1162991915,3cyclictest0-21swapper/208:46:222
116299190,17cyclictest0-21swapper/209:48:222
116299190,16cyclictest3989-21H222:10:212
1161991917,1cyclictest0-21swapper/112:10:121
1161991917,1cyclictest0-21swapper/108:04:481
1161991916,2cyclictest3991-21H222:10:211
1161991916,2cyclictest3991-21H222:10:211
1161991916,1cyclictest0-21swapper/108:17:551
1161991915,3cyclictest0-21swapper/111:38:011
1161991914,4cyclictest0-21swapper/110:13:351
1161991914,2cyclictest3981-21H222:10:211
116199191,16cyclictest2007-21systemd-journal09:50:321
116199191,16cyclictest0-21swapper/112:10:011
116199190,16cyclictest3981-21H222:10:211
1160991917,1cyclictest0-21swapper/011:35:040
1160991917,1cyclictest0-21swapper/009:58:530
1160991917,1cyclictest0-21swapper/009:21:370
1160991916,2cyclictest4983-21expr12:25:120
116099190,18cyclictest0-21swapper/011:01:550
116099190,16cyclictest3976-21H222:10:210
1162991817,1cyclictest28-21ksoftirqd/210:14:512
1162991816,1cyclictest0-21swapper/211:57:592
1162991816,1cyclictest0-21swapper/211:48:512
1162991816,1cyclictest0-21swapper/211:10:012
1162991816,1cyclictest0-21swapper/208:34:042
1162991815,2cyclictest0-21swapper/207:20:132
1162991814,3cyclictest6056-21cat10:40:012
1162991813,2cyclictest3991-21H222:10:212
116299181,2cyclictest0-21swapper/212:25:132
116299180,3cyclictest31651-21anvil10:28:532
116299180,2cyclictest5261-21latency_hist07:20:012
116299180,2cyclictest4035-21H222:10:212
116299180,2cyclictest3989-21H222:10:212
116299180,2cyclictest3976-21H222:10:212
116299180,17cyclictest993-21dbus-daemon11:52:102
116299180,17cyclictest10623-21latency_hist08:55:002
116299180,17cyclictest0-21swapper/209:50:122
116299180,15cyclictest3981-21H222:10:212
1161991814,3cyclictest3987-21H222:10:211
1161991811,6cyclictest870-21systemd-logind08:32:521
116199180,15cyclictest3981-21H222:10:211
116099182,1cyclictest1849-21chrt11:27:300
116099182,15cyclictest9-21ksoftirqd/007:10:150
116099181,16cyclictest6055-21dpkg10:40:000
116099180,3cyclictest1829-21systemd-journal12:25:000
116099180,2cyclictest3976-21H222:10:210
116099180,2cyclictest3976-21H222:10:210
116099180,2cyclictest3976-21H222:10:210
116099180,17cyclictest31225-21apache_processe12:15:110
116099180,16cyclictest23581-21latency_hist10:15:010
1162991716,1cyclictest0-21swapper/207:38:292
1162991715,1cyclictest25890-21cat12:05:132
1162991715,1cyclictest11702chrt12:19:542
1162991715,1cyclictest11072-21timerwakeupswit10:45:212
1162991714,2cyclictest6972-21ps11:35:182
1162991714,2cyclictest3979-21H222:10:212
1162991714,2cyclictest2932-21nvmesmart_nvme008:35:192
1162991714,2cyclictest2932-21nvmesmart_nvme008:35:182
1162991714,2cyclictest22686-21cut09:15:112
1162991714,2cyclictest22184-21chrt08:03:342
1162991714,2cyclictest19756-21ntpq10:05:192
116299171,15cyclictest16275-21nfsd410:55:192
116299171,15cyclictest12683-21chrt12:38:532
116299170,2cyclictest9709-21chrt12:32:112
116299170,2cyclictest4035-21H222:10:212
116299170,2cyclictest4035-21H222:10:212
116299170,2cyclictest30777-21taskset12:14:502
116299170,2cyclictest27778-21ntp_states08:15:172
116299170,2cyclictest19497-21awk11:00:182
116299170,2cyclictest16141-21expr10:00:132
116299170,1cyclictest3991-21H222:10:212
116299170,17cyclictest0-21swapper/210:42:392
116299170,16cyclictest993-21dbus-daemon11:20:202
116299170,16cyclictest399-20systemd-journal09:10:022
116299170,16cyclictest3991-21H222:10:212
116299170,16cyclictest3987-21H222:10:212
116299170,16cyclictest30605-21expr08:25:142
116299170,16cyclictest15707-21python307:50:022
116299170,15cyclictest3983-21H222:10:212
1161991715,1cyclictest0-21swapper/112:30:151
1161991715,1cyclictest0-21swapper/107:50:101
1161991714,2cyclictest4035-21H222:10:211
1161991714,2cyclictest3991-21H222:10:211
1161991714,2cyclictest3987-21H222:10:211
1161991714,2cyclictest3976-21H222:10:211
1161991714,2cyclictest32278-21expr11:25:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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