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2026-06-18 - 05:51
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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 50 highest latencies:
System rackeslot6.osadl.org (updated Thu Jun 18, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
106180699141122,10cyclictest1213033-21systemd-journal22:35:001
106180599140135,4cyclictest1153768-21kworker/u8:0+events_unbound00:04:020
106180599132123,6cyclictest1129915-21latency_hist22:40:010
106180599124108,12cyclictest1213033-21systemd-journal22:50:000
106180599113107,4cyclictest1152169-21kworker/u8:3+events_unbound00:05:260
106180699112105,5cyclictest1089596-21kworker/u8:0+flush-179:020:40:251
106180699111105,4cyclictest1136247-21kworker/u8:2+flush-179:023:45:151
10618059911198,10cyclictest1213033-21systemd-journal22:10:010
10618059910898,8cyclictest1136247-21kworker/u8:2+flush-179:023:00:230
10618059910898,7cyclictest1092533-21latency_hist20:45:000
106180599106102,3cyclictest1095746-21kworker/u8:3+events_unbound20:55:240
10618059910499,4cyclictest1079524-21kworker/u8:0+events_unbound20:20:240
10618059910491,5cyclictest1136247-21kworker/u8:2+events_unbound23:35:140
10618059910196,4cyclictest1047425-21kworker/u8:0+events_unbound19:15:230
1061806999888,6cyclictest1089596-21kworker/u8:0+flush-179:020:40:001
1061805999891,5cyclictest1110263-21kworker/u8:1+events_unbound22:15:220
1061806999688,6cyclictest1161774-21kworker/u8:0+flush-179:000:20:241
1061805999687,4cyclictest1110263-21kworker/u8:1+events_unbound21:55:250
1061806999482,9cyclictest1102610-21diskstats21:15:141
1061806999386,4cyclictest1072902-21kworker/u8:3+events_unbound20:10:001
1061806999385,6cyclictest1110263-21kworker/u8:1+flush-179:021:55:151
1061806999287,3cyclictest1115350-21kworker/u8:2+events_unbound22:00:141
1061806999182,7cyclictest1161774-21kworker/u8:0+flush-179:000:25:161
1061806999180,8cyclictest1137870-21latency_hist23:05:011
1061805999183,3cyclictest1136317-21kworker/u8:3+events_unbound23:40:190
1061805999085,4cyclictest1161774-21kworker/u8:0+events_unbound00:25:220
1061805999085,4cyclictest1079524-21kworker/u8:0+events_unbound20:15:220
1061805998883,4cyclictest1136247-21kworker/u8:2+events_unbound23:45:190
1061805998883,4cyclictest1084274-21kworker/u8:1+flush-179:020:30:240
1061805998878,4cyclictest1136247-21kworker/u8:2+events_unbound23:15:190
1061806998781,4cyclictest1118500-21kworker/u8:0+events_unbound22:05:131
1061806998778,7cyclictest1134674-21latency_hist22:55:011
1061805998782,4cyclictest1097350-21kworker/u8:0+events_unbound21:05:190
1061805998682,3cyclictest1102046-21kworker/u8:1+events_unbound21:20:220
1061805998680,4cyclictest1107344-21kworker/u8:0+events_unbound21:40:210
1061805998677,3cyclictest1071371-21kworker/u8:0+events_unbound19:55:240
1061805998580,4cyclictest1110263-21kworker/u8:1+flush-179:022:10:260
1061805998580,4cyclictest1057832-21kworker/u8:1+flush-179:019:35:260
1061806998478,4cyclictest1102104-21kworker/u8:2+flush-179:021:25:161
1061806998470,12cyclictest1155403-40mandb00:00:021
1061805998379,3cyclictest1107344-21kworker/u8:0+events_unbound21:35:140
1061805998378,4cyclictest1136247-21kworker/u8:2+flush-179:023:10:260
1061805998373,7cyclictest1128312-21latency_hist22:35:010
1061805998269,10cyclictest2639991-21cups-browsed00:00:010
1061806998174,5cyclictest1084274-21kworker/u8:1+flush-179:020:30:231
1061806998170,9cyclictest1095957-21apt-get20:55:101
1061805998176,3cyclictest1057832-21kworker/u8:1+events_unbound19:30:160
1061805998169,10cyclictest1094661-21diskstats20:50:160
1061806998067,11cyclictest1213033-21systemd-journal19:25:001
1061806997956,20cyclictest1057832-21kworker/u8:1+flush-179:019:45:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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