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2026-05-11 - 20:05
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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 Mon May 11, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8227993025,2cyclictest18210-21ls08:25:011
8227992920,9cyclictest21-21ksoftirqd/110:50:331
8227992819,0cyclictest0-21swapper/110:27:251
822899232,13cyclictest0-21swapper/208:56:122
8227992217,4cyclictest0-21swapper/111:49:571
822799210,20cyclictest426-21systemd-udevd10:20:521
822899193,15cyclictest16615-21cat10:15:132
822899193,15cyclictest16615-21cat10:15:132
822899193,15cyclictest0-21swapper/211:09:212
8228991915,2cyclictest4209-21nfsd411:45:182
822799192,2cyclictest9878-21cut08:10:011
822799190,18cyclictest843-21systemd-network12:01:351
822799190,16cyclictest3979-21H222:10:211
8225991917,1cyclictest0-21swapper/010:35:140
8225991916,3cyclictest9-21ksoftirqd/008:25:160
8225991913,5cyclictest843-21systemd-network11:03:230
8225991913,5cyclictest0-21swapper/011:22:170
8225991910,5cyclictest0-21swapper/009:25:010
822599190,2cyclictest4035-21H222:10:210
822899182,15cyclictest3989-21H222:10:212
8228991816,1cyclictest28-21ksoftirqd/211:10:092
8228991816,1cyclictest0-21swapper/212:20:122
8228991816,1cyclictest0-21swapper/208:20:132
822899181,13cyclictest0-21swapper/207:16:022
822899180,2cyclictest3987-21H222:10:212
822899180,17cyclictest8497-21cpuspeed_turbos11:55:142
822899180,17cyclictest3981-21H222:10:212
822899180,17cyclictest14679-21latency_hist09:15:002
822899180,16cyclictest28941-21cron11:35:002
822899180,15cyclictest4099-21H222:10:212
822799181,8cyclictest0-21swapper/107:26:021
8227991816,1cyclictest21-21ksoftirqd/108:45:161
8227991816,1cyclictest0-21swapper/109:21:241
8227991814,3cyclictest426-21systemd-udevd07:42:511
8227991813,4cyclictest0-21swapper/112:30:261
822799180,3cyclictest14500-21snapd11:50:591
822799180,17cyclictest0-21swapper/112:25:151
822799180,16cyclictest5601-21lxd11:42:421
822799180,16cyclictest3985-21H222:10:211
822799180,15cyclictest4099-21H222:10:211
822799180,15cyclictest3989-21H222:10:211
8225991816,1cyclictest9-21ksoftirqd/012:28:330
8225991816,1cyclictest0-21swapper/012:07:010
8225991815,2cyclictest8816-21awk10:55:220
8225991815,2cyclictest23500-21nfsd412:20:180
8225991814,3cyclictest3989-21H222:10:210
8225991814,3cyclictest3976-21H222:10:210
822599181,1cyclictest0-21swapper/008:01:380
822599180,2cyclictest4099-21H222:10:210
822599180,2cyclictest3987-21H222:10:210
822599180,17cyclictest3991-21H222:10:210
822599180,17cyclictest3985-21H222:10:210
822599180,16cyclictest3987-21H222:10:210
822599180,15cyclictest4035-21H222:10:210
822599180,15cyclictest3989-21H222:10:210
822899172,14cyclictest0-21swapper/209:40:132
8228991715,1cyclictest19451-21/usr/sbin/munin07:30:112
8228991715,1cyclictest190712chrt10:20:082
8228991715,1cyclictest0-21swapper/211:20:202
8228991715,1cyclictest0-21swapper/210:45:142
8228991715,1cyclictest0-21swapper/208:50:172
8228991714,2cyclictest4035-21H222:10:212
8228991714,2cyclictest4035-21H222:10:212
8228991714,2cyclictest3979-21H222:10:212
8228991714,2cyclictest27635-21/usr/sbin/munin12:30:242
8228991714,2cyclictest23635-21timerandwakeup10:25:222
8228991714,2cyclictest1500-21cpuspeed_turbos07:55:142
8228991714,2cyclictest1466-21switchtime11:40:222
8228991714,2cyclictest14550-21snapd10:38:022
8228991714,2cyclictest11429-21proc_pri11:00:192
8228991714,1cyclictest0-21swapper/212:12:052
8228991713,3cyclictest9996-21proc_pri07:10:202
8228991713,3cyclictest1829-21systemd-journal12:17:002
822899171,15cyclictest0-21swapper/209:26:352
822899170,3cyclictest0-21swapper/208:40:182
822899170,2cyclictest4099-21H222:10:212
822899170,2cyclictest4099-21H222:10:212
822899170,2cyclictest3979-21H222:10:212
822899170,2cyclictest19713-21fschecks_count08:25:152
822899170,2cyclictest15028-21cut12:05:172
822899170,2cyclictest13488-21latency_hist10:10:002
822899170,2cyclictest11475-21ntp_states08:10:192
822899170,16cyclictest8968-21ls10:55:222
822899170,16cyclictest843-21systemd-network09:15:112
822899170,16cyclictest6219-21ntpq09:55:192
822899170,16cyclictest444-21perf12:40:012
822899170,16cyclictest4035-21H222:10:212
822899170,16cyclictest3991-21H222:10:212
822899170,16cyclictest3979-21H222:10:212
822899170,16cyclictest15410-21date08:20:012
822899170,16cyclictest14499-21snapd11:37:582
822899170,16cyclictest0-21swapper/207:35:162
8227991715,1cyclictest22288-21grep11:20:181
8227991714,2cyclictest9822-21grep11:55:201
8227991714,2cyclictest863-21avahi-daemon11:05:211
8227991714,2cyclictest8128-21sed09:00:221
8227991714,2cyclictest4035-21H222:10:211
8227991714,2cyclictest3979-21H222:10:211
8227991714,2cyclictest30604-21postgres09:40:451
8227991714,2cyclictest29520-21cat10:35:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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