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2026-05-15 - 08:22
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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 Fri May 15, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1904999230,20cyclictest11700-21grep19:55:012
1904999226,15cyclictest0-21swapper/222:14:162
19047992113,5cyclictest0-21swapper/023:55:140
1904999202,17cyclictest7285-21fschecks_time21:40:142
19049992020,0cyclictest0-21swapper/200:38:522
19049992018,1cyclictest0-21swapper/223:30:172
1904999200,17cyclictest0-21swapper/223:00:192
1904899201,18cyclictest23216-21smartctl23:05:191
1904999193,15cyclictest28911-21latency_hist00:15:002
1904999193,15cyclictest0-21swapper/200:04:232
19049991917,1cyclictest0-21swapper/222:30:202
1904999190,16cyclictest4035-21H222:10:212
19048991916,2cyclictest19815-21sessionclean20:08:591
1904899191,17cyclictest18032-21cpuspeed_turbos23:55:141
1904899191,17cyclictest0-21swapper/122:35:191
1904899190,3cyclictest28151-21grep21:20:161
1904899190,16cyclictest3987-21H222:10:211
1904799192,2cyclictest3976-21H222:10:210
19047991917,1cyclictest0-21swapper/000:26:150
19049991815,2cyclictest26036-21nfsd419:20:162
19049991815,2cyclictest21333-21chrt19:10:492
19049991815,2cyclictest21333-21chrt19:10:492
19049991814,3cyclictest399-20systemd-journal23:25:002
19049991814,1cyclictest0-21swapper/221:10:032
19049991813,3cyclictest455-21plymouthd23:35:192
1904999181,15cyclictest7291-21fschecks_count19:45:152
1904999180,1cyclictest0-21swapper/220:20:122
1904999180,17cyclictest0-21swapper/222:50:172
1904999180,17cyclictest0-21swapper/221:52:162
1904999180,17cyclictest0-21swapper/221:52:162
1904999180,17cyclictest0-21swapper/221:05:122
19048991816,1cyclictest0-21swapper/121:37:101
1904899180,3cyclictest814-21cat21:30:131
1904899180,17cyclictest2007-21systemd-journal21:45:261
1904799182,1cyclictest3981-21H222:10:210
19047991817,1cyclictest9-21ksoftirqd/019:26:510
19047991815,2cyclictest17277-21nfsd422:55:180
1904799180,2cyclictest3987-21H222:10:210
1904799180,17cyclictest21649-21cron19:15:010
1904799180,17cyclictest21649-21cron19:15:010
1904799180,16cyclictest0-21swapper/000:15:140
19049991715,1cyclictest8225-21expr20:45:132
19049991715,1cyclictest0-21swapper/223:09:582
19049991715,1cyclictest0-21swapper/222:55:172
19049991715,1cyclictest0-21swapper/221:35:502
19049991715,1cyclictest0-21swapper/219:41:082
19049991714,2cyclictest5065-21/usr/sbin/munin20:40:122
19049991714,2cyclictest3991-21H222:10:212
19049991714,2cyclictest12805-21ls23:45:142
19049991714,2cyclictest12078-21/usr/sbin/munin19:55:202
19049991714,2cyclictest1085-21gdbus00:30:212
19049991713,3cyclictest1377-21lxd21:02:512
1904999171,15cyclictest11401-21taskset21:47:082
1904999170,2cyclictest3976-21H222:10:212
1904999170,2cyclictest26198-21cat22:15:142
1904999170,2cyclictest26198-21cat22:15:132
1904999170,2cyclictest25956-21perf00:10:012
1904999170,2cyclictest18278-21cut20:05:172
1904999170,2cyclictest17515-21/usr/sbin/munin22:00:152
1904999170,2cyclictest17479-21sed22:00:022
1904999170,1cyclictest0-21swapper/220:02:032
1904999170,16cyclictest5601-21lxd20:50:502
1904999170,16cyclictest4676-21sendmail-msp20:40:002
1904999170,16cyclictest3979-21H222:10:212
1904999170,16cyclictest3365-21munin-run23:30:002
1904999170,16cyclictest31435-21nfsd421:25:172
1904999170,16cyclictest31223-21cat20:30:012
1904999170,16cyclictest29737-21latency_hist23:20:012
1904999170,16cyclictest28701-21tail19:25:162
1904999170,16cyclictest25003-21cstates21:15:162
1904999170,16cyclictest23326-21cpuspeed_turbos20:15:122
1904999170,16cyclictest18817-21latency23:55:172
1904999170,16cyclictest15232-21chrt20:55:502
1904999170,16cyclictest0-21swapper/222:44:432
1904999170,15cyclictest3976-21H222:10:212
19048991715,1cyclictest0-21swapper/100:36:251
19048991714,2cyclictest7362-21/usr/sbin/munin19:45:151
19048991714,2cyclictest455-21plymouthd21:40:121
19048991714,2cyclictest4099-21H222:10:211
19048991714,2cyclictest30675-21bounce20:25:521
19048991714,2cyclictest27603-21nfsd400:10:181
19048991714,2cyclictest25859-21find22:15:111
19048991714,2cyclictest25859-21find22:15:101
19048991714,2cyclictest25103-21ls23:10:151
19048991714,2cyclictest22259-21expr21:10:141
19048991714,2cyclictest1525-21lxd23:22:391
19048991714,2cyclictest1399-21http_loadtime19:35:151
19048991714,2cyclictest1377-21lxd22:14:501
19048991714,2cyclictest1292-21awk00:20:171
19048991714,2cyclictest12919-21ls20:55:001
19048991714,2cyclictest12181-21grep22:45:221
19048991713,2cyclictest3985-21H222:10:211
19048991713,2cyclictest3985-21H222:10:211
1904899171,15cyclictest7014-21chrt20:40:271
1904899171,15cyclictest0-21swapper/119:40:241
1904899170,2cyclictest539-21mailstats20:30:201
1904899170,2cyclictest15884-21missed_timers21:55:161
1904899170,2cyclictest13613-21expr20:55:131
1904899170,2cyclictest10889-21postgres19:50:201
1904899170,2cyclictest1035-21thermald19:55:211
1904899170,1cyclictest0-21swapper/122:55:221
1904899170,16cyclictest9343-21mailstats20:45:211
1904899170,16cyclictest8513-21ls23:35:231
1904899170,16cyclictest5095-21/usr/sbin/munin23:30:181
1904899170,16cyclictest4694-21plymouth00:25:221
1904899170,16cyclictest29980-21awk22:20:161
1904899170,16cyclictest29009-21proc_pri19:25:181
1904899170,16cyclictest23539-21expr20:15:121
1904899170,16cyclictest21699-21cut20:10:171
1904899170,16cyclictest21292-21cmp23:05:011
1904899170,16cyclictest2007-21systemd-journal23:25:531
1904899170,16cyclictest17902-21expr22:00:131
19047991715,1cyclictest9306-21/usr/sbin/munin21:45:140
19047991715,1cyclictest26645-21chrt23:10:260
19047991714,2cyclictest7809-21awk21:40:180
19047991714,2cyclictest7576-21kernelversion19:45:160
19047991714,2cyclictest455-21plymouthd20:55:130
19047991714,2cyclictest4035-21H222:10:210
19047991714,2cyclictest3987-21H222:10:210
19047991714,2cyclictest26092-21cut22:15:130
19047991714,2cyclictest26092-21cut22:15:130
19047991714,2cyclictest24403-21munin-run19:20:000
19047991714,2cyclictest23545-21expr20:15:130
19047991714,2cyclictest16245-21ntpq20:00:180
19047991714,2cyclictest12380-21cat19:55:140
19047991714,1cyclictest0-21swapper/022:49:080
1904799171,15cyclictest0-21swapper/020:05:190
1904799170,2cyclictest4626-21cat22:35:000
1904799170,2cyclictest3987-21H222:10:210
1904799170,2cyclictest3987-21H222:10:210
1904799170,2cyclictest3981-21H222:10:210
1904799170,2cyclictest16526-21grep23:50:180
1904799170,2cyclictest13879-21fschecks_time22:50:150
1904799170,16cyclictest9627-21fschecks_time00:35:170
1904799170,16cyclictest904-21vmstat22:25:200
1904799170,16cyclictest4643-21perf20:40:010
1904799170,16cyclictest3976-21H222:10:210
1904799170,16cyclictest3976-21H222:10:210
1904799170,16cyclictest31382-21nfsd423:20:180
1904799170,16cyclictest28331-21kernelversion23:15:160
1904799170,16cyclictest28175-21sed00:10:210
1904799170,16cyclictest25051-21cat21:15:150
1904799170,16cyclictest10415-21cut20:50:000
1904799170,15cyclictest4099-21H222:10:210
19049991614,1cyclictest0-21swapper/222:35:142
19049991614,1cyclictest0-21swapper/222:25:122
19049991614,1cyclictest0-21swapper/222:05:172
19049991614,1cyclictest0-21swapper/219:35:162
19049991614,1cyclictest0-21swapper/219:15:042
1904999160,2cyclictest15968-21if_enp1s023:50:162
1904999160,1cyclictest0-21swapper/221:30:142
1904999160,15cyclictest32316-21apt-get00:20:132
1904999160,15cyclictest24677-21/usr/sbin/munin23:10:192
1904999160,15cyclictest0-21swapper/222:45:192
1904999160,15cyclictest0-21swapper/222:20:112
1904999160,15cyclictest0-21swapper/221:20:132
1904999160,15cyclictest0-21swapper/220:30:132
19048991614,1cyclictest3450-21gsd-color21:00:081
19048991614,1cyclictest0-21swapper/122:25:591
19048991614,1cyclictest0-21swapper/121:50:151
19048991614,1cyclictest0-21swapper/121:50:141
19048991614,1cyclictest0-21swapper/121:25:131
19048991614,1cyclictest0-21swapper/121:05:131
19048991614,1cyclictest0-21swapper/100:05:201
19048991613,2cyclictest8362-21fschecks_count22:40:141
19048991613,2cyclictest2318-21expr22:30:141
1904899160,2cyclictest13480-21expr22:50:151
1904899160,15cyclictest993-21dbus-daemon00:30:221
1904899160,15cyclictest28352-21kernelversion23:15:171
1904899160,15cyclictest26549-21df20:20:121
1904899160,15cyclictest22750-21fschecks_time19:15:141
1904899160,15cyclictest21320-21grep00:00:131
1904899160,15cyclictest16283-21open_files20:00:181
1904899160,15cyclictest0-21swapper/123:50:161
1904899160,15cyclictest0-21swapper/123:45:391
1904899160,15cyclictest0-21swapper/122:05:141
1904899160,15cyclictest0-21swapper/121:15:221
1904899160,15cyclictest0-21swapper/120:35:141
1904899160,15cyclictest0-21swapper/119:20:131
1904899160,15cyclictest0-21swapper/100:15:011
19047991614,1cyclictest23353-21tr22:10:140
19047991614,1cyclictest22802-21postgres00:03:250
19047991614,1cyclictest1105-21cstates21:30:140
19047991614,1cyclictest0-21swapper/021:00:130
19047991614,1cyclictest0-21swapper/020:50:110
19047991614,1cyclictest0-21swapper/020:30:220
19047991614,1cyclictest0-21swapper/019:20:140
19047991613,2cyclictest30206-21/usr/sbin/munin21:25:130
19047991613,2cyclictest27959-21expr21:20:140
19047991613,2cyclictest19417-21expr21:05:130
1904799160,2cyclictest12377-21/usr/sbin/munin23:45:210
1904799160,1cyclictest0-21swapper/023:45:010
1904799160,1cyclictest0-21swapper/022:40:140
1904799160,1cyclictest0-21swapper/019:51:540
1904799160,15cyclictest4812-21sed21:35:180
1904799160,15cyclictest3979-21H222:10:210
1904799160,15cyclictest29026-21expr22:20:130
1904799160,15cyclictest25327-21sendmail-mta00:05:450
1904799160,15cyclictest18783-21cpuspeed_turbos23:00:150
1904799160,15cyclictest1100-21snmpd22:00:080
1904799160,15cyclictest0-21swapper/023:35:130
1904799160,15cyclictest0-21swapper/021:55:200
1904799160,15cyclictest0-21swapper/021:10:180
1904799160,15cyclictest0-21swapper/020:40:130
1904799160,15cyclictest0-21swapper/020:25:150
1904799160,15cyclictest0-21swapper/020:20:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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