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2026-06-20 - 16:02
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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 Sat Jun 20, 2026 12:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1926865999436,39cyclictest601ktimers/410:32:404
1926865999089,1cyclictest1964501-21ntpq08:15:194
192686599888,59cyclictest1889460-21kworker/u32:1+events_unbound08:00:234
1926865998869,19cyclictest2055576-21ntpq11:00:194
1926865998785,1cyclictest2048863-21apt10:50:114
1926865998445,38cyclictest2089633-21sh12:05:004
192686599792,58cyclictest2093617-21if_err_eno412:10:164
1926865997616,39cyclictest1086-21runrttasks08:06:024
1926865997336,18cyclictest2024406-21irqstats10:05:184
1926865997233,39cyclictest0-21swapper/409:56:264
1926865997233,39cyclictest0-21swapper/409:36:064
1926865997233,39cyclictest0-21swapper/408:23:104
1926865997233,21cyclictest0-21swapper/410:10:544
1926865997233,20cyclictest0-21swapper/412:18:294
1926865997233,20cyclictest0-21swapper/412:07:294
1926865997233,20cyclictest0-21swapper/410:56:464
1926865997233,19cyclictest0-21swapper/411:51:304
1926865997233,19cyclictest0-21swapper/408:48:424
1926865997233,19cyclictest0-21swapper/408:48:424
1926865997214,39cyclictest2035620-21taskset10:25:194
1926865997012,39cyclictest2103228-21sh12:29:594
1926865997012,39cyclictest1978243-21ps08:40:224
1926865997012,39cyclictest1978243-21ps08:40:224
1926865996728,19cyclictest0-21swapper/407:27:014
1926865996528,18cyclictest2018032-21kworker/u32:0+writeback10:45:164
1926865996526,22cyclictest0-21swapper/410:39:054
1926865996324,39cyclictest0-21swapper/408:27:434
1926865996223,39cyclictest0-21swapper/407:52:474
1926865996122,39cyclictest0-21swapper/409:28:284
192686599591,39cyclictest1953319-21load07:55:184
1926865995839,0cyclictest0-21swapper/409:15:594
1926865995818,19cyclictest874-21mta-sts-daemon10:19:374
1926865995738,0cyclictest0-21swapper/408:37:474
1926865995719,18cyclictest0-21swapper/410:03:364
1926865995619,37cyclictest0-21swapper/408:56:444
1926865995619,37cyclictest0-21swapper/408:56:434
1926865995617,39cyclictest1961851-21ps08:10:224
192686599560,55cyclictest1464903-21kworker/u32:5+events_unbound07:43:364
1926865995519,36cyclictest0-21swapper/411:46:444
1926865995519,36cyclictest0-21swapper/409:09:434
1926865995519,15cyclictest0-21swapper/411:41:374
1926865995436,18cyclictest0-21swapper/407:10:324
1926865995433,19cyclictest0-21swapper/411:32:574
1926865995419,35cyclictest0-21swapper/411:56:364
1926865995419,15cyclictest0-21swapper/412:35:564
1926865995419,15cyclictest0-21swapper/411:15:404
1926865995414,19cyclictest0-21swapper/409:12:224
192686599540,35cyclictest2054309-21kworker/u32:5+events_unbound11:26:124
192686599540,35cyclictest1924494-21kworker/u32:0+events_unbound07:18:234
1926865995319,15cyclictest0-21swapper/411:06:364
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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