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2026-08-09 - 08:51
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Sun Aug 09, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3447963998323,59cyclictest0-21swapper/622:33:056
3447963998323,59cyclictest0-21swapper/622:33:056
3447963997837,38cyclictest7850ktimers/623:30:216
3447963997313,21cyclictest3542203-21unin-run22:00:016
3447963997215,38cyclictest3525623-21munin-run21:30:016
3447963997133,19cyclictest781ktimers/622:57:186
3447963997132,39cyclictest4162500-21gmain00:04:206
3447963997130,18cyclictest362-21jbd2/sda2-819:55:176
3447963997010,39cyclictest3621420-21taskset00:20:456
3447963996810,39cyclictest0-21swapper/621:47:276
3447963996728,18cyclictest0-21swapper/621:15:256
344796399667,0cyclictest0-21swapper/620:20:216
344796399657,39cyclictest3537749-21lpstat21:50:156
3447963996527,18cyclictest0-21swapper/621:31:526
3447957996547,18cyclictest171ktimers/021:00:170
3447963996425,39cyclictest0-21swapper/620:54:576
3447959996426,19cyclictest0-21swapper/220:30:172
344796399633,39cyclictest3461588-21taskset19:32:496
3447963996324,18cyclictest0-21swapper/623:05:336
3447963996323,39cyclictest7850ktimers/620:25:296
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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