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2025-08-21 - 22:10
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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 rackdslot2.osadl.org (updated Thu Aug 21, 2025 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137391212178,22phc2sys0-21swapper/307:05:503
94992209175,22sleep20-21swapper/207:09:012
74402203170,21sleep10-21swapper/107:05:051
93232202169,22sleep00-21swapper/007:06:420
9870996614,13cyclictest0-21swapper/207:30:002
9870996313,23cyclictest24731-21mailstats11:00:262
987099630,19cyclictest4906-21irqstats08:05:212
987099621,19cyclictest23233-21date08:45:012
987099620,21cyclictest24501-21expr07:40:172
987099620,21cyclictest24501-21expr07:40:162
9869996221,7cyclictest25-21ksoftirqd/110:10:251
987099611,20cyclictest2073-21taskset08:00:192
9869996123,3cyclictest25-21ksoftirqd/110:45:261
987099600,23cyclictest12554-21awk08:20:222
987099600,21cyclictest21803-21date07:35:002
957726050,4sleep20-21swapper/207:10:012
137922600,4sleep1241ktimersoftd/110:40:121
987099590,28cyclictest1740-21date10:15:002
987099580,24cyclictest4653-21df_abs10:20:152
987099580,21cyclictest2498-21awk10:15:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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