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2025-06-17 - 02:12
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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 rackfslot7.osadl.org (updated Mon Jun 16, 2025 12:46:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
765390999153,38cyclictest0-21swapper/309:50:193
76539099877,79cyclictest784768-21chrt07:42:373
76539099856,39cyclictest0-21swapper/308:20:113
765390997537,19cyclictest919897-21timerwakeupswit11:40:293
765390997537,19cyclictest919897-21timerwakeupswit11:40:293
765390997437,18cyclictest511ktimers/307:11:553
765390997437,18cyclictest511ktimers/307:11:543
765390997212,59cyclictest923702-21kworker/u32:2+events_unbound12:28:303
765390997131,40cyclictest0-21swapper/309:21:413
765390996910,39cyclictest915277-21kworker/u32:3+events_unbound11:38:063
765390996810,39cyclictest904138-21aten2.4-expect11:15:143
765390996225,37cyclictest511ktimers/308:41:153
76539099612,40cyclictest1089-21snmpd12:01:303
765390996123,19cyclictest501rcuc/309:45:143
765390996122,39cyclictest0-21swapper/309:44:393
765390996122,39cyclictest0-21swapper/309:10:593
765390996118,21cyclictest778-21dbus-daemon10:50:203
76539099590,40cyclictest882510-21if_err_eno110:35:233
76539099590,0cyclictest0-21swapper/308:36:113
765390995839,19cyclictest511ktimers/311:24:273
76539099580,39cyclictest950327-21if_eno212:35:183
76539099580,38cyclictest0-21swapper/308:49:513
765390995736,1cyclictest144798rtkit-daemon10:24:363
765390995719,19cyclictest0-21swapper/310:46:113
76539099570,38cyclictest2620273-21kworker/u32:6+events_unbound09:15:193
765390995638,18cyclictest511ktimers/310:05:193
765390995638,18cyclictest0-21swapper/308:30:153
765390995619,37cyclictest0-21swapper/308:56:393
765390995619,37cyclictest0-21swapper/307:25:513
765390995619,17cyclictest0-21swapper/310:44:023
765390995536,0cyclictest0-21swapper/307:37:573
765390995535,19cyclictest894780-21tail10:55:273
765390995519,36cyclictest0-21swapper/311:01:273
765390995519,36cyclictest0-21swapper/310:28:033
765390995519,17cyclictest0-21swapper/311:52:433
765390995519,17cyclictest0-21swapper/311:52:423
76539099550,15cyclictest0-21swapper/308:10:453
765391995411,19cyclictest0-21swapper/409:20:194
765390995436,18cyclictest9400712sleep312:16:173
765390995419,35cyclictest0-21swapper/309:27:113
765390995418,36cyclictest0-21swapper/307:22:353
765390995416,20cyclictest777467-21diskstats07:30:153
76539099540,54cyclictest0-21swapper/311:09:233
765387995416,19cyclictest8398512sleep009:20:200
765394995315,19cyclictest0-21swapper/711:30:197
765390995319,34cyclictest0-21swapper/312:10:073
765390995319,34cyclictest0-21swapper/311:31:433
765390995319,15cyclictest0-21swapper/311:26:063
765390995319,15cyclictest0-21swapper/308:04:053
765390995314,39cyclictest0-21swapper/312:31:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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