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2026-05-02 - 09:19
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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 50 highest latencies:
System rackdslot0.osadl.org (updated Sat May 02, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5179993432,1cyclictest0-21swapper/122:00:121
5179993331,2cyclictest0-21swapper/121:23:561
5179992525,0cyclictest0-21swapper/123:45:181
5179992422,1cyclictest3157-21mii-tool21:00:151
5179992313,9cyclictest870-21systemd-logind00:38:511
517899236,2cyclictest23107-21latency_hist00:29:590
5180992219,2cyclictest29972-21sed20:50:152
5178992113,4cyclictest0-21swapper/021:25:010
5180992018,1cyclictest0-21swapper/222:35:152
517899205,1cyclictest9-21ksoftirqd/019:54:340
517899204,15cyclictest0-21swapper/023:27:490
517899204,15cyclictest0-21swapper/020:42:020
517899203,2cyclictest4071-21date23:55:010
5178992016,3cyclictest27499-21sh19:50:010
5178992016,3cyclictest27499-21sh19:50:000
518099193,1cyclictest0-21swapper/223:24:302
518099190,18cyclictest4035-21H222:10:212
518099190,18cyclictest14550-21snapd23:32:572
5179991914,4cyclictest399-20systemd-journal21:37:331
5179991913,5cyclictest426-21systemd-udevd23:38:511
517999190,3cyclictest0-21swapper/121:07:341
517999190,1cyclictest0-21swapper/123:00:151
517999190,18cyclictest426-21systemd-udevd20:34:521
517899199,0cyclictest0-21swapper/021:10:150
5178991917,1cyclictest8916-21timerwakeupswit20:10:210
517899191,17cyclictest0-21swapper/021:10:000
517899190,1cyclictest0-21swapper/022:45:120
517899190,18cyclictest0-21swapper/021:35:160
518099182,1cyclictest0-21swapper/219:50:052
518099182,15cyclictest0-21swapper/220:28:262
5180991817,1cyclictest0-21swapper/223:00:012
5180991815,1cyclictest0-21swapper/223:50:332
5180991814,3cyclictest32140-21pzem_voltage21:50:192
5180991814,3cyclictest0-21swapper/223:15:182
518099181,16cyclictest31929-21nfsd419:55:182
518099181,16cyclictest25963-21if_enp1s021:40:152
518099181,15cyclictest3983-21H222:10:212
518099180,2cyclictest4035-21H222:10:212
518099180,2cyclictest4035-21H222:10:212
518099180,17cyclictest26599-21nvmesmart_nvme019:45:172
518099180,17cyclictest26599-21nvmesmart_nvme019:45:172
518099180,17cyclictest0-21swapper/222:00:142
518099180,15cyclictest0-21swapper/220:55:122
5179991817,1cyclictest21-21ksoftirqd/121:29:261
5179991816,1cyclictest0-21swapper/123:32:461
5179991815,2cyclictest1856-21systemd-udevd23:10:521
5179991814,3cyclictest0-21swapper/123:15:131
5179991814,2cyclictest10929-21https19:20:021
5179991814,2cyclictest10929-21https19:20:021
5179991813,4cyclictest0-21swapper/119:50:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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