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2025-12-11 - 15:49
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 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 rack5slot7.osadl.org (updated Thu Dec 11, 2025 12:44:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11620224350,13sleep08608-1kworker/u3:005:35:370
125999915780,54cyclictest24646-21/usr/sbin/munin08:55:420
125999915779,53cyclictest21431-21rm08:45:030
125999915779,38cyclictest26245-21memory09:01:110
125999915680,51cyclictest14009-21ssh08:17:130
125999915579,34cyclictest16231-21ls10:21:100
125999915486,48cyclictest27588-21ssh11:01:020
125999915377,34cyclictest4592-21latency_hist09:40:040
125999915178,51cyclictest25070-21timerwakeupswit10:51:270
125999915177,51cyclictest30331-21ssh09:15:440
125999915176,52cyclictest32579-21grep07:25:570
125999915082,48cyclictest10930-21timerandwakeup10:01:270
125999915078,33cyclictest2237-21sed07:36:050
125999915072,54cyclictest4665-21grep07:46:240
125999915072,52cyclictest17257-21wc08:30:060
125999914979,50cyclictest28363-21sed07:01:050
125999914978,45cyclictest6525-21wc09:46:280
125999914976,50cyclictest26450-21grep10:56:270
125999914975,51cyclictest11528-21ssh10:05:180
125999914974,33cyclictest27552-21if_eth009:05:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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