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2026-03-18 - 16:43
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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 Wed Mar 18, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
395999257,17cyclictest0-21swapper/010:30:120
395999237,9cyclictest0-21swapper/007:40:210
396199226,15cyclictest0-21swapper/207:25:202
396099223,13cyclictest15676-21munin-run07:30:001
3959992214,4cyclictest0-21swapper/010:14:570
3960992119,1cyclictest29842-21strings08:50:171
3961992018,1cyclictest25376-21ntp_kernel_pll_10:35:182
3961992013,6cyclictest0-21swapper/207:45:182
396099209,10cyclictest0-21swapper/109:45:191
396099200,19cyclictest0-21swapper/111:40:141
396199197,11cyclictest0-21swapper/211:35:422
396199192,16cyclictest15112-21cut10:20:012
396199192,16cyclictest0-21swapper/211:21:132
3961991916,2cyclictest7461-21nfsd411:00:172
3961991916,2cyclictest7461-21nfsd411:00:172
396199190,2cyclictest3976-21H222:10:212
3960991917,1cyclictest21-21ksoftirqd/108:33:001
3960991916,2cyclictest18572-21nfsd411:20:171
3960991914,2cyclictest3987-21H222:10:211
3960991913,4cyclictest15869-21cpuspeed_turbos12:15:131
395999193,1cyclictest0-21swapper/007:23:250
3959991915,3cyclictest0-21swapper/011:37:220
395999191,16cyclictest1180-21awk09:55:110
395999190,18cyclictest399-20systemd-journal10:39:550
396199182,15cyclictest28-21ksoftirqd/208:55:172
396199182,15cyclictest0-21swapper/208:33:262
3961991815,2cyclictest26370-21grep09:40:182
3961991815,2cyclictest20482-21expr11:25:132
3961991814,3cyclictest0-21swapper/209:15:012
396199180,2cyclictest5599-21awk10:00:182
396199180,2cyclictest0-21swapper/207:10:182
396199180,1cyclictest0-21swapper/208:15:132
396199180,17cyclictest399-20systemd-journal08:39:002
396199180,17cyclictest2424-21systemctl10:54:592
396199180,17cyclictest11179-21nfsd410:10:172
396099182,15cyclictest21-21ksoftirqd/109:32:351
3960991815,2cyclictest4367-21fschecks_count08:05:141
3960991815,2cyclictest3979-21H222:10:211
3960991815,2cyclictest15617-21latency11:15:171
3960991815,1cyclictest3979-21H222:10:211
3960991815,1cyclictest0-21swapper/109:50:551
3960991814,3cyclictest3981-21H222:10:211
3960991814,3cyclictest1522-21lxd11:52:421
3960991814,3cyclictest11325-21grep12:05:171
396099180,2cyclictest3989-21H222:10:211
396099180,17cyclictest29829-21grep10:45:131
396099180,17cyclictest0-21swapper/109:13:301
395999182,15cyclictest323412chrt11:45:180
3959991815,2cyclictest18685-21cpuspeed_turbos10:25:130
3959991815,2cyclictest13694-21grep12:10:150
395999181,1cyclictest0-21swapper/011:20:210
395999180,17cyclictest4957-21fschecks_count07:10:150
3961991714,2cyclictest9862-21cat10:10:002
3961991714,2cyclictest8514-21timerwakeupswit08:10:212
3961991714,2cyclictest4655-21needreboot10:55:162
3961991714,2cyclictest31402-21timerandwakeup10:45:202
3961991714,2cyclictest28914-21cpuspeed_turbos08:50:132
3961991714,2cyclictest2851-21nfsd411:50:152
3961991714,2cyclictest25214-21date11:35:012
3961991714,2cyclictest2298-21ls09:55:162
3961991714,2cyclictest19868-21grep10:25:172
3961991714,2cyclictest10371-21grep11:05:172
396199171,15cyclictest3976-21H222:10:212
396199171,15cyclictest0-21swapper/209:15:142
396199171,15cyclictest0-21swapper/209:15:132
396199171,15cyclictest0-21swapper/207:51:132
396199170,3cyclictest0-21swapper/208:00:132
396199170,2cyclictest5719-21sed11:55:162
396199170,2cyclictest3979-21H222:10:212
396199170,2cyclictest23351-21chrt10:32:152
396199170,2cyclictest16749-21snapd09:52:482
396199170,2cyclictest15945-21lxd12:10:412
396199170,1cyclictest0-21swapper/211:15:182
396199170,16cyclictest455-21plymouthd07:30:142
396199170,16cyclictest455-21plymouthd07:30:132
396199170,16cyclictest3987-21H222:10:212
396199170,16cyclictest23094-21fschecks_count09:35:142
396199170,16cyclictest22110-21latency_hist09:35:002
396199170,16cyclictest2194-21expr09:00:122
396199170,16cyclictest15703-21/usr/sbin/munin12:15:232
396199170,16cyclictest14804-21latency_hist08:25:012
396199170,16cyclictest14182-21munin-run11:15:012
396199170,16cyclictest0-21swapper/210:23:202
396199170,16cyclictest0-21swapper/209:05:482
3960991714,2cyclictest571-21grep10:50:151
3960991714,2cyclictest4035-21H222:10:211
3960991714,2cyclictest3976-21H222:10:211
3960991714,2cyclictest3349-21ntpq09:00:181
3960991714,2cyclictest3303-21/usr/sbin/munin10:55:111
3960991714,2cyclictest31787-21fschecks_count11:45:151
3960991714,2cyclictest27662-21grep07:50:141
3960991714,2cyclictest27529-21grep10:40:151
3960991714,2cyclictest27085-21missed_timers08:45:181
3960991714,2cyclictest26141-21fschecks_count11:35:151
3960991714,2cyclictest25253-21cat07:45:131
3960991713,2cyclictest3989-21H222:10:211
396099171,15cyclictest0-21swapper/112:35:131
3960991710,3cyclictest0-21swapper/111:12:471
396099170,2cyclictest21336-21awk11:25:161
396099170,2cyclictest17611-21nfsd407:30:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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