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2025-12-26 - 14:04
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 20 highest latencies:
System rackbslot2.osadl.org (updated Thu Dec 25, 2025 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40315512229199,19sleep20-21swapper/207:06:042
40317142226196,20sleep30-21swapper/307:08:103
40317832225195,20sleep10-21swapper/107:09:051
40316502222193,19sleep00-21swapper/007:07:180
411481721450,3sleep24114775-21snmp_ryswitch.c08:45:032
414736621080,1sleep10-21swapper/109:20:161
4031978996051,8cyclictest123151-21latency_hist12:40:000
4031983995753,3cyclictest4070884-21kworker/u8:0+events_unbound08:05:001
4031986995650,3cyclictest76308-21snmp_wanpowerct11:45:012
4031991995338,14cyclictest37191-21kworker/u8:0+flush-179:011:00:133
4031991995248,3cyclictest55391-21kworker/u8:1+events_unbound11:25:133
4031978995147,3cyclictest4047252-21apt-get07:25:120
4031986995044,5cyclictest4090535-21ntpq08:15:142
4031978995045,3cyclictest4114478-21chrome08:45:010
4031986994742,4cyclictest4136128-21/usr/share/muni09:10:142
4031983994743,2cyclictest4166483-21/usr/share/muni09:45:011
4031991994642,3cyclictest4123089-21kworker/u8:1+events_unbound09:15:133
4031991994638,7cyclictest4105046-21kworker/u8:4+flush-179:008:35:163
4031991994541,2cyclictest4166394-13chrome09:45:013
4031991994441,2cyclictest4148315-21kworker/u8:2+events_unbound09:55:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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