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2026-09-10 - 01:50
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Wed Sep 09, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28988992516,9cyclictest0-21swapper/111:55:141
28988992118,2cyclictest25934-21sshd09:54:301
2898999205,13cyclictest0-21swapper/211:54:372
2898999200,18cyclictest843-21systemd-network11:25:532
2898899202,17cyclictest21-21ksoftirqd/112:28:441
2898899202,11cyclictest11906-21apt-config09:30:001
28983992018,1cyclictest9-21ksoftirqd/011:22:540
28983992017,2cyclictest3053-21systemd-logind07:48:520
28983992017,2cyclictest3053-21systemd-logind07:48:520
28983992014,3cyclictest0-21swapper/008:20:170
2898999192,16cyclictest4035-21H222:10:212
2898999192,16cyclictest4035-21H222:10:212
2898999192,16cyclictest0-21swapper/209:20:012
2898999190,18cyclictest843-21systemd-network08:54:022
2898999190,18cyclictest3991-21H222:10:212
2898999190,18cyclictest0-21swapper/208:12:022
2898999190,16cyclictest4099-21H222:10:212
28988991917,1cyclictest21-21ksoftirqd/112:16:391
28988991915,3cyclictest0-21swapper/108:31:391
2898899191,16cyclictest13940-21nfsd409:30:171
2898899191,16cyclictest13940-21nfsd409:30:171
2898899190,17cyclictest14504-21snapd09:22:581
2898399193,1cyclictest0-21swapper/009:05:340
28983991917,1cyclictest9-21ksoftirqd/010:53:290
28983991917,1cyclictest0-21swapper/009:35:290
28983991917,1cyclictest0-21swapper/007:21:300
2898399191,16cyclictest14495-21snapd09:10:140
2898399190,2cyclictest3981-21H222:10:210
2898399190,1cyclictest0-21swapper/012:30:170
2898399190,1cyclictest0-21swapper/012:30:160
2898999182,1cyclictest0-21swapper/212:35:212
2898999182,1cyclictest0-21swapper/210:57:012
2898999182,15cyclictest26223-21smartctl10:50:182
2898999182,15cyclictest0-21swapper/209:08:482
28989991816,1cyclictest28-21ksoftirqd/210:30:162
28989991816,1cyclictest0-21swapper/210:15:182
28989991815,2cyclictest9392-21munin-run11:20:002
28989991815,2cyclictest9392-21munin-run11:20:002
28989991815,2cyclictest25963-21cat09:54:552
28989991814,3cyclictest0-21swapper/210:00:392
28989991814,3cyclictest0-21swapper/207:26:292
2898999180,2cyclictest3985-21H222:10:212
2898999180,2cyclictest3981-21H222:10:212
2898999180,2cyclictest0-21swapper/207:33:082
2898999180,16cyclictest14550-21snapd09:10:152
2898899182,9cyclictest27115-21latency_hist10:55:001
2898899182,15cyclictest3991-21H222:10:211
2898899182,15cyclictest0-21swapper/111:22:071
28988991816,1cyclictest7024-21pzem_current10:15:201
28988991815,2cyclictest15022-21nfsd410:30:181
28988991814,3cyclictest3991-21H222:10:211
28988991814,3cyclictest3987-21H222:10:211
2898899181,2cyclictest1856-21systemd-udevd10:12:521
2898899181,16cyclictest3450-21gsd-color07:45:191
2898899181,16cyclictest3450-21gsd-color07:45:181
2898899180,2cyclictest3991-21H222:10:211
2898899180,17cyclictest0-21swapper/110:20:141
2898399182,15cyclictest0-21swapper/009:20:190
28983991815,2cyclictest9973-21cat10:20:210
2898399180,3cyclictest3981-21H222:10:210
2898399180,3cyclictest3981-21H222:10:210
2898399180,3cyclictest14505-21snapd08:27:340
2898399180,2cyclictest1377-21lxd08:12:430
2898399180,1cyclictest3991-21H222:10:210
2898399180,16cyclictest3981-21H222:10:210
28989991715,1cyclictest0-21swapper/209:41:572
28989991714,2cyclictest870-21systemd-logind09:28:522
28989991714,2cyclictest3991-21H222:10:212
28989991714,2cyclictest3989-21H222:10:212
28989991714,2cyclictest3989-21H222:10:212
28989991714,2cyclictest3981-21H222:10:212
28989991714,2cyclictest3811-21latency_hist08:20:012
28989991714,2cyclictest14927-21perf09:35:002
28989991714,2cyclictest14927-21perf09:35:002
28989991714,2cyclictest0-21swapper/209:55:132
28989991712,3cyclictest13995-21fschecks_count08:35:142
2898999170,2cyclictest4169-21ntpq10:10:182
2898999170,2cyclictest4099-21H222:10:212
2898999170,2cyclictest3989-21H222:10:212
2898999170,2cyclictest3707-21master09:02:032
2898999170,2cyclictest25107-21munin-plugin-st08:00:012
2898999170,2cyclictest1902-21latency_hist12:05:002
2898999170,2cyclictest14495-21snapd09:22:582
2898999170,1cyclictest0-21swapper/208:24:042
2898999170,16cyclictest5550-21nfsd411:10:222
2898999170,16cyclictest4035-21H222:10:212
2898999170,16cyclictest399-20systemd-journal08:25:012
2898999170,16cyclictest3981-21H222:10:212
2898999170,16cyclictest2872-21systemd-logind07:46:532
2898999170,16cyclictest2872-21systemd-logind07:46:522
2898999170,16cyclictest24644-21latency_hist10:50:002
2898999170,16cyclictest2261-21taskset12:05:142
2898999170,16cyclictest19980-21fschecks_count10:40:162
2898999170,16cyclictest1829-21systemd-journal11:33:312
2898999170,16cyclictest17201-21sed09:35:212
2898999170,16cyclictest16912-21fschecks_count08:40:122
2898999170,16cyclictest11339-21/usr/sbin/munin07:35:152
2898999170,16cyclictest1079-21cups-browsed11:40:212
2898999170,16cyclictest0-21swapper/207:42:232
2898899172,1cyclictest0-21swapper/110:41:141
2898899172,15cyclictest3987-21H222:10:211
28988991714,2cyclictest4035-21H222:10:211
28988991714,2cyclictest3981-21H222:10:211
28988991714,2cyclictest2900-21switchtime11:05:191
28988991714,2cyclictest21884-21gpg-connect-age08:50:011
28988991714,2cyclictest16736-21expr08:40:111
28988991714,2cyclictest12451-21missed_timers07:35:181
28988991714,2cyclictest1012-21pzem_current10:05:191
28988991714,2cyclictest0-21swapper/109:55:131
28988991711,5cyclictest13994-21fschecks_count08:35:141
2898899170,2cyclictest3989-21H222:10:211
2898899170,2cyclictest3983-21H222:10:211
2898899170,2cyclictest3979-21H222:10:211
2898899170,2cyclictest3979-21H222:10:211
2898899170,2cyclictest32406-21apt-get07:15:131
2898899170,2cyclictest2872-21systemd-logind12:04:511
2898899170,2cyclictest28135-21cat09:00:151
2898899170,2cyclictest21385-21python308:50:011
2898899170,2cyclictest2069-21systemd-udevd09:36:521
2898899170,2cyclictest1522-21lxd08:12:421
2898899170,16cyclictest6008-21ls08:20:211
2898899170,16cyclictest5784-21proc_pri11:10:221
2898899170,16cyclictest3989-21H222:10:211
2898899170,16cyclictest3989-21H222:10:211
2898899170,16cyclictest3983-21H222:10:211
2898899170,16cyclictest3976-21H222:10:211
2898899170,16cyclictest3976-21H222:10:211
2898899170,16cyclictest31262-21kernelversion09:05:151
2898899170,16cyclictest26007-21needreboot08:55:161
2898899170,16cyclictest14333-21grep07:40:141
2898899170,16cyclictest0-21swapper/111:45:211
2898899170,16cyclictest0-21swapper/109:46:091
2898899170,16cyclictest0-21swapper/109:42:031
2898899170,15cyclictest13834-21nfsd411:25:171
2898899170,0cyclictest0-21swapper/110:45:211
28983991715,1cyclictest0-21swapper/012:00:150
28983991714,2cyclictest3983-21H222:10:210
28983991714,2cyclictest3981-21H222:10:210
28983991714,2cyclictest3981-21H222:10:210
28983991714,2cyclictest2463-21nfsd408:15:180
28983991714,2cyclictest21380-21python308:50:010
28983991714,2cyclictest1377-21lxd08:38:420
28983991714,1cyclictest0-21swapper/009:55:130
28983991713,3cyclictest29090-21/usr/sbin/munin11:55:120
2898399170,2cyclictest993-21dbus-daemon12:25:200
2898399170,2cyclictest6232-21sed10:15:160
2898399170,2cyclictest399-20systemd-journal07:44:550
2898399170,2cyclictest3414-21master11:11:160
2898399170,2cyclictest23691-21awk07:55:170
2898399170,2cyclictest15945-21lxd11:50:420
2898399170,2cyclictest10951-21idleruntime-cro07:35:010
2898399170,1cyclictest3989-21H222:10:210
2898399170,1cyclictest3989-21H222:10:210
2898399170,1cyclictest0-21swapper/012:15:430
2898399170,17cyclictest0-21swapper/010:45:210
2898399170,16cyclictest870-21systemd-logind10:06:520
2898399170,16cyclictest4540-21expr09:15:120
2898399170,16cyclictest3989-21H222:10:210
2898399170,16cyclictest3983-21H222:10:210
2898399170,16cyclictest2553-21expr12:05:130
2898399170,16cyclictest20467-21munin-run11:40:000
2898399170,16cyclictest1670-21grep07:15:210
2898399170,16cyclictest13470-21latency11:25:160
2898399170,16cyclictest11762-21grep08:30:180
2898399170,15cyclictest3991-21H222:10:210
2898399170,15cyclictest3981-21H222:10:210
2898399170,15cyclictest3981-21H222:10:210
28989991614,1cyclictest9808-21apt-get11:20:102
28989991614,1cyclictest0-21swapper/210:05:122
28989991614,1cyclictest0-21swapper/208:55:192
28989991614,1cyclictest0-21swapper/208:05:122
28989991614,1cyclictest0-21swapper/208:00:202
28989991614,1cyclictest0-21swapper/207:50:132
2898999160,1cyclictest0-21swapper/211:05:192
2898999160,1cyclictest0-21swapper/209:45:142
2898999160,1cyclictest0-21swapper/207:15:142
2898999160,15cyclictest0-21swapper/211:00:072
2898999160,15cyclictest0-21swapper/208:45:182
28988991614,1cyclictest28436-21expr08:05:151
28988991614,1cyclictest16574-21nfsd411:30:181
28988991614,1cyclictest0-21swapper/111:37:081
28988991614,1cyclictest0-21swapper/110:55:121
28988991614,1cyclictest0-21swapper/110:00:211
28988991614,1cyclictest0-21swapper/108:00:151
2898899160,1cyclictest0-21swapper/111:00:161
2898899160,1cyclictest0-21swapper/108:15:171
2898899160,15cyclictest8464-21missed_timers08:25:171
2898899160,15cyclictest3981-21H222:10:211
2898899160,15cyclictest0-21swapper/111:40:211
2898899160,15cyclictest0-21swapper/107:30:141
28983991614,1cyclictest6710-21cat07:25:150
28983991614,1cyclictest101rcuc/012:20:120
28983991614,1cyclictest0-21swapper/010:55:010
28983991614,1cyclictest0-21swapper/010:25:170
28983991614,1cyclictest0-21swapper/008:00:110
28983991614,1cyclictest0-21swapper/007:35:130
28983991613,2cyclictest23811-21expr09:50:140
28983991613,2cyclictest13940-21grep10:30:140
2898399160,1cyclictest248372chrt08:55:050
2898399160,1cyclictest0-21swapper/008:40:110
2898399160,15cyclictest3055-21sed11:05:190
2898399160,15cyclictest14500-21snapd08:52:580
2898399160,15cyclictest0-21swapper/010:40:150
2898399160,15cyclictest0-21swapper/009:25:140
2898399160,15cyclictest0-21swapper/009:00:110
2898399160,15cyclictest0-21swapper/007:50:150
2898399160,15cyclictest0-21swapper/007:10:010
2898399160,14cyclictest0-21swapper/011:30:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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