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2026-06-21 - 04:13
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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 Sun Jun 21, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
79067599127118,7cyclictest795399-21kworker/u8:3+events_unbound20:05:231
79067599126116,7cyclictest792169-21latency_hist19:15:011
79067599123115,4cyclictest854261-21kworker/u8:0+events_unbound22:25:241
79067599122114,5cyclictest877636-21latency_hist23:40:011
79067199119109,7cyclictest879208-21latency_hist23:45:010
79067599116110,4cyclictest866200-21kworker/u8:1+events_unbound23:30:231
79067199116108,6cyclictest892313-21kworker/u8:0+flush-179:000:30:260
79067599115107,6cyclictest866200-21kworker/u8:1+events_unbound00:20:251
79067599113107,4cyclictest819276-21kworker/u8:1+flush-179:020:45:251
79067599113106,4cyclictest859886-21kworker/u8:3+events_unbound23:20:001
79067199112102,7cyclictest792149-21kworker/u8:1+flush-179:019:20:230
7906759910998,8cyclictest832547-21latency_hist21:20:021
79067199109102,5cyclictest866200-21kworker/u8:1+flush-179:023:10:210
79067599108103,4cyclictest832782-21kworker/u8:1+flush-179:021:25:251
79067599108102,3cyclictest850033-21latency_hist22:15:011
7906759910798,6cyclictest866200-21kworker/u8:1+events_unbound23:10:181
7906719910796,7cyclictest882377-21latency_hist23:55:010
7906719910796,7cyclictest882377-21latency_hist23:55:000
7906759910599,4cyclictest832782-21kworker/u8:1+events_unbound21:20:231
7906759910595,8cyclictest822653-21kworker/u8:3+events_unbound20:50:231
7906759910593,9cyclictest1213033-21systemd-journal00:03:591
79067599105100,3cyclictest843701-21kworker/u8:1+flush-179:022:05:241
7906759910293,6cyclictest866200-21kworker/u8:1+events_unbound23:55:191
7906759910188,4cyclictest808079-21kworker/u8:2+events_unbound20:25:241
7906759910092,6cyclictest854261-21kworker/u8:0+events_unbound22:55:251
790675999994,4cyclictest835762-21kworker/u8:3+flush-179:021:40:241
790675999893,4cyclictest835762-21kworker/u8:3+flush-179:021:45:241
790675999893,4cyclictest814440-21kworker/u8:0+events_unbound20:35:231
790675999889,6cyclictest806748-21kworker/u8:0+events_unbound20:00:131
790675999888,7cyclictest880793-21latency_hist23:50:011
790675999791,4cyclictest837335-21kworker/u8:4+flush-179:022:00:171
790675999691,4cyclictest866200-21kworker/u8:1+events_unbound00:05:241
790675999690,4cyclictest798521-21kworker/u8:1+flush-179:020:20:201
790675999686,7cyclictest798539-21latency_hist19:35:001
790675999489,4cyclictest876249-21kworker/u8:2+flush-179:023:40:261
790675999383,8cyclictest803572-21apt-get19:50:121
790671999386,4cyclictest853484-21latency_hist22:25:010
790675999186,4cyclictest814440-21kworker/u8:0+flush-179:020:30:191
790675999085,4cyclictest795399-21kworker/u8:3+flush-179:019:35:251
790675999080,8cyclictest854261-21kworker/u8:0+events_unbound23:05:011
790675998782,3cyclictest824306-21kworker/u8:2+events_unbound21:10:161
790675998781,4cyclictest822653-21kworker/u8:3+events_unbound21:05:221
790675998580,4cyclictest866200-21kworker/u8:1+flush-179:023:05:251
790675998580,4cyclictest795399-21kworker/u8:3+flush-179:019:45:221
790675998579,4cyclictest819276-21kworker/u8:1+events_unbound20:40:111
790675998572,10cyclictest510-21rs:main1
790671998579,4cyclictest816306-21apt-get20:30:090
790671998577,5cyclictest854261-21kworker/u8:0+flush-179:022:40:160
790675998479,4cyclictest854261-21kworker/u8:0+events_unbound22:30:251
790675998474,8cyclictest811523-21apt-get20:15:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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