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2026-03-18 - 02:56
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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
Characteristics of the 20 highest latencies:
System rackdslot0.osadl.org (updated Tue Mar 17, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28120992523,1cyclictest21658-21timerwakeupswit10:40:212
2811899220,4cyclictest0-21swapper/009:20:010
2811899220,4cyclictest0-21swapper/009:20:000
2812099210,20cyclictest843-21systemd-network10:14:512
2811999214,1cyclictest0-21swapper/108:10:161
28120992016,3cyclictest0-21swapper/210:07:442
2811999202,1cyclictest0-21swapper/107:21:151
28118992016,3cyclictest0-21swapper/008:11:360
2812099193,2cyclictest16777-21cut10:35:012
28120991916,2cyclictest21474-21cpuspeed_turbos08:50:112
28120991916,2cyclictest18754-21ntp_kernel_err09:40:182
28120991916,2cyclictest18754-21ntp_kernel_err09:40:182
28120991916,1cyclictest0-21swapper/210:03:592
28120991912,3cyclictest0-21swapper/211:35:292
2812099190,4cyclictest3212-21JS22:10:212
2812099190,17cyclictest0-21swapper/211:10:122
2811999193,1cyclictest12727-21expr12:20:121
2811999192,11cyclictest7654-21munin-run11:15:011
28119991915,3cyclictest0-21swapper/112:27:421
2811999190,3cyclictest0-21swapper/107:35:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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