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2026-04-18 - 05:32
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Sat Apr 18, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2108199253,18cyclictest0-21swapper/023:40:000
2108499220,18cyclictest0-21swapper/219:55:072
2108499210,17cyclictest0-21swapper/220:37:112
2108199210,20cyclictest843-21systemd-network23:48:450
2108399200,19cyclictest492-21fschecks_count19:30:141
21084991917,1cyclictest0-21swapper/220:20:452
21084991917,1cyclictest0-21swapper/200:35:532
21084991913,1cyclictest0-21swapper/220:05:122
2108499190,4cyclictest7193-21nfsd419:40:182
2108499190,2cyclictest3979-21H222:10:212
2108499190,18cyclictest0-21swapper/223:58:142
2108499190,18cyclictest0-21swapper/223:16:502
2108499190,16cyclictest681-21iwlist19:30:152
2108499190,16cyclictest3987-21H222:10:212
2108399192,16cyclictest5761-21expr00:25:131
2108399190,16cyclictest3989-21H222:10:211
2108399190,16cyclictest3985-21H222:10:211
2108399190,16cyclictest3981-21H222:10:211
2108399190,16cyclictest3976-21H222:10:211
2108199193,15cyclictest0-21swapper/023:55:130
2108199191,2cyclictest3991-21H222:10:210
2108199190,2cyclictest3991-21H222:10:210
2108199190,16cyclictest3979-21H222:10:210
2108199190,16cyclictest32749-21nfsd420:25:160
2108499182,15cyclictest4035-21H222:10:212
2108499182,15cyclictest0-21swapper/223:36:212
21084991816,1cyclictest0-21swapper/221:56:372
21084991815,2cyclictest32581-21missed_timers20:25:162
21084991815,2cyclictest2205-21nfsd423:20:172
2108499181,2cyclictest2327-21dpkg22:25:022
2108499181,16cyclictest10305-21nfsd419:45:172
2108499180,3cyclictest342-21grep21:25:012
2108499180,3cyclictest342-21grep21:25:002
2108499180,3cyclictest31443-21python300:15:012
2108499180,2cyclictest3985-21H222:10:212
2108499180,17cyclictest4099-21H222:10:212
2108499180,17cyclictest3991-21H222:10:212
2108399182,15cyclictest21-21ksoftirqd/123:45:361
2108399182,15cyclictest0-21swapper/120:48:001
21083991815,2cyclictest3983-21H222:10:211
21083991814,3cyclictest9803-21pzem_power00:30:201
2108399180,3cyclictest426-21systemd-udevd20:30:521
2108399180,3cyclictest25685-21fschecks_time21:10:151
2108399180,2cyclictest3983-21H222:10:211
2108399180,16cyclictest3987-21H222:10:211
2108399180,16cyclictest2858-21rs:main1
2108399180,16cyclictest2858-21rs:main1
2108399180,15cyclictest3976-21H222:10:211
2108199182,15cyclictest3976-21H222:10:210
2108199182,15cyclictest3976-21H222:10:210
21081991816,1cyclictest25784-21cat00:05:010
21081991816,1cyclictest0-21swapper/022:32:270
21081991814,3cyclictest3987-21H222:10:210
21081991814,3cyclictest0-21swapper/023:22:230
2108199181,2cyclictest11132-21expr20:45:130
2108199181,16cyclictest1351-21lxd21:04:480
2108199180,2cyclictest3979-21H222:10:210
2108199180,16cyclictest3983-21H222:10:210
2108199180,15cyclictest455-21plymouthd23:27:050
2108199180,15cyclictest3985-21H222:10:210
21084991715,1cyclictest3954-21VM22:10:212
21084991714,2cyclictest4099-21H222:10:212
21084991714,2cyclictest4035-21H222:10:212
21084991714,2cyclictest3987-21H222:10:212
21084991714,2cyclictest3987-21H222:10:212
21084991714,2cyclictest3981-21H222:10:212
21084991714,2cyclictest3976-21H222:10:212
21084991714,2cyclictest3976-21H222:10:212
21084991714,2cyclictest23785-21threads23:00:222
21084991714,2cyclictest16830-21snapd00:05:172
21084991714,2cyclictest1626-21perf22:25:002
21084991714,2cyclictest12046-21sed21:45:002
21084991714,2cyclictest11354-21cpuspeed_turbos22:40:132
21084991713,3cyclictest20943-21mailstats21:00:212
2108499171,15cyclictest0-21swapper/222:16:422
2108499170,2cyclictest4035-21H222:10:212
2108499170,2cyclictest4035-21H222:10:212
2108499170,2cyclictest3985-21H222:10:212
2108499170,2cyclictest3985-21H222:10:212
2108499170,2cyclictest2601-21cat21:25:202
2108499170,2cyclictest13308-21munin-run20:50:012
2108499170,16cyclictest9733-21proc_pri00:30:202
2108499170,16cyclictest9380-21processes20:40:202
2108499170,16cyclictest4035-21H222:10:212
2108499170,16cyclictest3985-21H222:10:212
2108499170,16cyclictest3979-21H222:10:212
2108499170,16cyclictest24091-21chrt19:15:072
2108499170,16cyclictest23169-21/usr/sbin/munin00:00:172
2108499170,16cyclictest22070-21fschecks_time19:10:142
2108499170,16cyclictest22070-21fschecks_time19:10:142
2108499170,16cyclictest13825-21acpi22:45:092
2108499170,16cyclictest0-21swapper/222:55:132
2108499170,16cyclictest0-21swapper/222:34:592
2108499170,16cyclictest0-21swapper/221:54:432
2108499170,15cyclictest3985-21H222:10:212
2108499170,15cyclictest0-21swapper/222:00:102
21083991715,1cyclictest22904-21if_err_enp1s023:00:151
21083991715,1cyclictest0-21swapper/121:30:181
21083991715,1cyclictest0-21swapper/100:11:341
21083991714,2cyclictest7987-21ntp_kernel_pll_23:30:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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