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2026-01-01 - 06:31
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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 Jan 01, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
553604999987,9cyclictest613698-21kworker/u8:1+flush-179:022:20:011
553604998983,4cyclictest592285-21kworker/u8:3+flush-179:021:20:001
553604998878,7cyclictest624612-21latency_hist22:50:001
553604998682,3cyclictest555342-21kworker/u8:0+events_unbound20:15:241
553604998478,4cyclictest553474-21kworker/u8:2+flush-179:019:10:251
553604998378,3cyclictest649106-21kworker/u8:0+events_unbound00:30:251
553604998373,7cyclictest590666-21latency_hist21:05:011
553604998275,5cyclictest637643-21kworker/u8:2+flush-179:023:45:001
553604998274,6cyclictest615945-21kworker/u8:2+events_unbound23:00:001
553604998271,4cyclictest649106-21kworker/u8:0+events_unbound00:25:141
553603998274,6cyclictest556696-21latency_hist19:20:010
553604998076,3cyclictest637643-21kworker/u8:2+events_unbound00:20:251
553604997872,4cyclictest606598-21kworker/u8:1+events_unbound21:55:241
553604997872,4cyclictest606598-21kworker/u8:1+events_unbound21:55:241
553604997869,7cyclictest618246-21latency_hist22:30:001
553604997771,4cyclictest555342-21kworker/u8:0+flush-179:020:00:251
553604997769,5cyclictest615945-21kworker/u8:2+events_unbound23:00:241
553604997764,10cyclictest601797-21apt-get21:40:001
553604997461,12cyclictest647218-21kworker/u8:3+events_unbound00:00:021
553604997365,6cyclictest558302-21latency_hist19:25:001
553604997266,4cyclictest553474-21kworker/u8:2+events_unbound19:30:251
553604997265,5cyclictest598597-21kworker/u8:1+flush-179:021:30:011
553604997062,5cyclictest631839-21kworker/u8:3+events_unbound23:35:191
553604996962,5cyclictest613698-21kworker/u8:1+flush-179:022:35:001
553604996955,11cyclictest568103-21latency_hist19:55:021
553603996959,7cyclictest582946-21/usr/sbin/munin20:40:240
553604996861,5cyclictest615945-21kworker/u8:2+flush-179:022:45:011
553604996860,6cyclictest555342-21kworker/u8:0+flush-179:020:30:001
553604996858,7cyclictest652267-21apt-get00:20:001
553604996858,5cyclictest629431-21kworker/u8:1+events_unbound23:15:281
553604996761,4cyclictest601883-21kworker/u8:3+flush-179:022:10:261
553604996756,9cyclictest647179-40mandb00:00:011
553604996661,3cyclictest637643-21kworker/u8:2+flush-179:023:30:161
553604996661,3cyclictest629431-21kworker/u8:1+flush-179:023:15:011
553604996656,4cyclictest595684-21kworker/u8:0+flush-179:021:45:211
553603996657,7cyclictest578163-21/usr/sbin/munin20:25:240
553604996559,4cyclictest592285-21kworker/u8:3+events_unbound21:15:001
553604996558,6cyclictest564708-21kworker/u8:1+flush-179:019:55:211
553604996556,7cyclictest579489-21kworker/u8:1+flush-179:020:30:251
553603996555,7cyclictest649071-21latency_hist00:10:010
553603996555,7cyclictest649071-21latency_hist00:10:000
553604996449,6cyclictest555342-21kworker/u8:0+events_unbound20:55:011
553604996257,4cyclictest640835-21kworker/u8:1+flush-179:023:50:281
553604996252,7cyclictest574731-21latency_hist20:15:001
553603996255,4cyclictest576576-21kworker/u8:2+flush-179:020:20:260
553604996155,4cyclictest579489-21kworker/u8:1+flush-179:020:35:161
553604996155,4cyclictest579489-21kworker/u8:1+flush-179:020:35:161
553604996147,5cyclictest555342-21kworker/u8:0+events_unbound20:25:001
553603996154,5cyclictest598597-21kworker/u8:1+flush-179:021:40:210
553603996048,9cyclictest555342-21kworker/u8:0+events_unbound19:40:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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