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2026-04-26 - 04:19
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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 Sun Apr 26, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1287399252,22cyclictest10325-21cut22:55:001
1287399250,24cyclictest843-21systemd-network19:59:511
1287399250,1cyclictest0-21swapper/120:20:201
1287399240,16cyclictest22564-21turbostat00:15:001
1287499230,5cyclictest0-21swapper/222:05:152
1287399234,18cyclictest0-21swapper/121:28:521
1287399231,21cyclictest68672chrt22:47:291
1287399231,21cyclictest319492sleep123:31:261
1287399231,21cyclictest17704-21ntp_kernel_pll_21:10:191
1287399230,3cyclictest21000-21munin-run19:25:001
1287399230,2cyclictest21394-21awk22:15:161
1287399230,2cyclictest19216-21sed22:10:221
1287399230,2cyclictest10635-21grep23:50:211
1287399230,1cyclictest0-21swapper/123:45:211
1287399230,1cyclictest0-21swapper/120:39:001
1287399230,1cyclictest0-21swapper/119:44:481
1287399221,6cyclictest0-21swapper/121:45:141
1287399221,20cyclictest18368-21nfsd420:15:181
1287399221,20cyclictest18368-21nfsd420:15:181
1287399220,3cyclictest13426-21grep23:00:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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