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2026-09-03 - 07:42
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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 Sep 03, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9964499167153,11cyclictest107504-21apt-get19:35:031
9964499137130,5cyclictest135570-21kworker/u8:2+events_unbound21:00:001
9964499132123,7cyclictest193504-21kworker/u8:3+flush-179:000:35:001
9964499131123,5cyclictest93346-21kworker/u8:1+events_unbound19:15:231
9964499131122,7cyclictest164266-21latency_hist22:30:011
9964499130124,5cyclictest175916-21kworker/u8:2+flush-179:023:35:251
9964499127123,3cyclictest191824-21kworker/u8:2+flush-179:023:55:231
9964499127121,5cyclictest106951-21kworker/u8:1+flush-179:020:00:001
9964499125115,8cyclictest127391-21apt-get20:35:001
9964299124115,7cyclictest1213033-21systemd-journal23:50:230
9964499120107,3cyclictest182349-21kworker/u8:0+events_unbound23:30:241
9964499119107,10cyclictest99490-21kworker/u8:0+events_unbound20:10:121
9964499118110,6cyclictest165833-21kworker/u8:2+events_unbound22:50:231
9964499117110,5cyclictest135570-21kworker/u8:2+flush-179:021:05:211
9964499116110,4cyclictest165833-21kworker/u8:2+events_unbound22:45:211
9964499115110,3cyclictest135570-21kworker/u8:2+flush-179:021:15:171
9964499114108,5cyclictest99490-21kworker/u8:0+flush-179:019:50:011
9964499114104,7cyclictest106951-21kworker/u8:1+flush-179:020:50:251
996429911395,14cyclictest114391-21apt-get19:55:010
9964499112105,5cyclictest155252-21kworker/u8:0+flush-179:022:05:231
9964499111105,4cyclictest165833-21kworker/u8:2+flush-179:022:35:161
996429911096,10cyclictest174094-21latency_hist23:00:010
9964499109103,4cyclictest165833-21kworker/u8:2+flush-179:022:55:211
9964499109100,6cyclictest141940-21kworker/u8:0+events_unbound21:30:151
996429910998,8cyclictest193434-40logrotate00:00:010
996449910894,11cyclictest1213033-21systemd-journal22:15:011
9964499108102,4cyclictest99490-21kworker/u8:0+events_unbound20:15:241
996449910799,6cyclictest99490-21kworker/u8:0+events_unbound19:50:231
9964499107101,4cyclictest142021-21kworker/u8:1+events_unbound21:55:011
996449910699,5cyclictest99490-21kworker/u8:0+flush-179:019:30:241
996449910699,5cyclictest193504-21kworker/u8:3+events_unbound00:10:151
996449910699,5cyclictest193504-21kworker/u8:3+events_unbound00:10:141
996449910698,5cyclictest174040-21kworker/u8:0+events_unbound23:00:221
996449910697,7cyclictest185514-21kworker/u8:1+flush-179:000:00:211
996449910597,4cyclictest193504-21kworker/u8:3+events_unbound00:15:151
996449910589,13cyclictest99490-21kworker/u8:0+flush-179:019:20:201
996429910593,10cyclictest201480-21apt-get00:24:590
996449910395,6cyclictest99490-21kworker/u8:0+events_unbound19:40:241
996449910293,7cyclictest106951-21kworker/u8:1+events_unbound20:25:121
996449910293,6cyclictest165833-21kworker/u8:2+flush-179:022:40:161
996429910288,10cyclictest175916-21kworker/u8:2+flush-179:023:15:000
996449910194,5cyclictest182349-21kworker/u8:0+events_unbound23:50:241
996449910088,10cyclictest150197-21apt-get21:45:111
996429910091,3cyclictest193504-21kworker/u8:3+flush-179:000:25:160
99644999992,5cyclictest203555-21kworker/u8:1+flush-179:000:35:261
99644999992,5cyclictest193504-21kworker/u8:3+events_unbound00:05:291
99644999989,7cyclictest106951-21kworker/u8:1+flush-179:020:40:201
99644999892,4cyclictest151564-21kworker/u8:3+events_unbound22:15:221
99642999784,10cyclictest106951-21kworker/u8:1+flush-179:019:35:010
99644999687,7cyclictest135570-21kworker/u8:2+flush-179:021:15:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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