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2025-12-01 - 00:17
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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 Sun Nov 30, 2025 12:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20350162233180,18sleep10-21swapper/107:09:171
20349372227175,43sleep30-21swapper/307:08:133
20349442225195,20sleep00-21swapper/007:08:190
20346882222192,20sleep20-21swapper/207:05:322
2035398996347,14cyclictest2117808-21snmp_wanswitch.08:45:002
2035401996256,4cyclictest2066048-21latency_hist07:45:013
2035401995750,4cyclictest2221483-21snmp_wanswitch.10:45:013
2035398995249,2cyclictest2091668-21kworker/u8:3+events_unbound08:35:162
2035398995146,3cyclictest2053251-21kworker/u8:2+events_unbound08:20:152
2035401995045,3cyclictest2036893-21apt-get07:10:073
2035398995047,2cyclictest2243519-21kworker/u8:4+events_unbound11:10:152
2035397995041,8cyclictest2091668-21kworker/u8:3+flush-179:008:55:061
2035393995044,4cyclictest2066334-21CacheThread_Blo07:45:000
2035398994946,2cyclictest2183266-21kworker/u8:2+flush-179:011:50:062
2035393994943,4cyclictest2066269-21chrome07:45:010
2035398994844,3cyclictest2057357-21kworker/u8:4+flush-179:007:40:112
2035393994733,13cyclictest2013346-1kworker/0:2H+kblockd11:53:010
21136772460,1chrt2113670-21ntp_states08:40:033
2035398994643,2cyclictest2212317-21kworker/u8:1+flush-179:011:00:062
2035398994643,2cyclictest2156132-21kworker/u8:3+events_unbound10:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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