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2026-05-22 - 14:04
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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 highest latencies:
System rackdslot0.osadl.org (updated Fri May 22, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27971993120,10cyclictest0-21swapper/120:15:011
27971992918,10cyclictest16254-21grep19:45:141
27971992415,9cyclictest0-21swapper/120:56:171
2796799224,2cyclictest3991-21H222:10:210
2796799220,6cyclictest0-21swapper/022:34:280
2797699215,7cyclictest0-21swapper/221:44:422
27976992016,3cyclictest3976-21H222:10:212
27971992017,2cyclictest3981-21H222:10:211
27971992017,2cyclictest21-21ksoftirqd/123:02:561
2797199201,4cyclictest6875-21python321:25:011
2797699193,15cyclictest3989-21H222:10:212
2797699193,15cyclictest28-21ksoftirqd/220:40:332
2797699193,15cyclictest0-21swapper/222:05:002
2797699193,15cyclictest0-21swapper/220:25:022
27976991917,1cyclictest0-21swapper/219:15:112
27976991915,3cyclictest4032-21accounts22:10:212
2797699190,16cyclictest3991-21H222:10:212
27971991917,1cyclictest22783-21awk21:50:191
27971991917,1cyclictest0-21swapper/119:16:211
2797199191,3cyclictest3954-21VM22:10:211
2797199190,18cyclictest5366-21sendmail-mta00:10:291
2797199190,16cyclictest4035-21H222:10:211
2797199190,16cyclictest3987-21H222:10:211
2797199190,16cyclictest0-21swapper/123:10:481
2796799193,15cyclictest3976-21H222:10:210
2796799193,15cyclictest0-21swapper/021:08:340
2796799193,10cyclictest12381-21munin-run23:30:000
2796799192,2cyclictest2226-21if_enp1s021:15:170
27967991918,1cyclictest9-21ksoftirqd/022:51:270
27967991918,1cyclictest9-21ksoftirqd/022:45:520
27967991917,1cyclictest9-21ksoftirqd/020:22:370
27967991917,1cyclictest0-21swapper/000:25:040
27967991915,3cyclictest993-21dbus-daemon22:55:220
27967991914,2cyclictest3985-21H222:10:210
2796799190,18cyclictest843-21systemd-network00:33:550
2796799190,16cyclictest4099-21H222:10:210
2796799190,16cyclictest3985-21H222:10:210
2797699182,1cyclictest12826-21nfsd400:25:182
2797699182,15cyclictest3983-21H222:10:212
27976991816,1cyclictest0-21swapper/219:53:302
27976991815,2cyclictest3991-21H222:10:212
27976991815,2cyclictest31732-21chrt21:10:162
27976991814,3cyclictest4099-21H222:10:212
27976991814,3cyclictest4035-21H222:10:212
27976991814,3cyclictest3985-21H222:10:212
27976991814,3cyclictest32431-21cat20:15:002
27976991814,3cyclictest0-21swapper/221:16:132
2797699181,2cyclictest3985-21H222:10:212
2797699180,2cyclictest4099-21H222:10:212
2797699180,2cyclictest4035-21H222:10:212
2797699180,2cyclictest4035-21H222:10:212
2797699180,2cyclictest3976-21H222:10:212
2797699180,17cyclictest4099-21H222:10:212
2797699180,17cyclictest4035-21H222:10:212
2797699180,17cyclictest3991-21H222:10:212
2797699180,17cyclictest3991-21H222:10:212
2797699180,17cyclictest3987-21H222:10:212
2797699180,17cyclictest26761-21ntpq21:00:182
2797699180,16cyclictest4099-21H222:10:212
2797699180,16cyclictest2870-21latency_hist22:15:012
2797699180,16cyclictest12680-21munin-run23:30:012
2797199182,1cyclictest0-21swapper/120:02:361
2797199182,15cyclictest97082chrt21:27:121
27971991816,1cyclictest21-21ksoftirqd/122:05:511
27971991816,1cyclictest21-21ksoftirqd/120:30:581
27971991816,1cyclictest0-21swapper/120:45:011
27971991816,1cyclictest0-21swapper/119:42:351
27971991816,1cyclictest0-21swapper/100:18:091
27971991815,2cyclictest3987-21H222:10:211
27971991815,2cyclictest3987-21H222:10:211
27971991814,3cyclictest3991-21H222:10:211
2797199181,2cyclictest3979-21H222:10:211
2797199180,2cyclictest3991-21H222:10:211
2797199180,1cyclictest0-21swapper/120:25:131
2797199180,17cyclictest4035-21H222:10:211
2797199180,17cyclictest3987-21H222:10:211
2797199180,17cyclictest21025-21cron23:45:001
2797199180,16cyclictest3979-21H222:10:211
2797199180,15cyclictest3985-21H222:10:211
2797199180,15cyclictest3976-21H222:10:211
2796799182,2cyclictest4099-21H222:10:210
2796799182,15cyclictest0-21swapper/020:55:130
2796799182,15cyclictest0-21swapper/020:43:100
2796799182,15cyclictest0-21swapper/020:35:010
27967991816,1cyclictest9-21ksoftirqd/019:37:370
27967991815,2cyclictest4035-21H222:10:210
27967991815,2cyclictest0-21swapper/022:35:140
27967991814,3cyclictest6988-21munin-run21:25:020
27967991814,3cyclictest3981-21H222:10:210
2796799181,16cyclictest23872-21latency_hist21:55:000
2796799181,16cyclictest0-21swapper/022:40:160
2796799180,2cyclictest3989-21H222:10:210
2796799180,2cyclictest3985-21H222:10:210
2796799180,2cyclictest3983-21H222:10:210
2796799180,2cyclictest3983-21H222:10:210
2796799180,2cyclictest3983-21H222:10:210
2796799180,17cyclictest843-21systemd-network00:39:040
2796799180,17cyclictest3979-21H222:10:210
2796799180,16cyclictest4099-21H222:10:210
2796799180,16cyclictest3983-21H222:10:210
2796799180,15cyclictest3983-21H222:10:210
27976991716,1cyclictest28-21ksoftirqd/223:36:042
27976991715,1cyclictest0-21swapper/222:09:012
27976991714,2cyclictest4099-21H222:10:212
27976991714,2cyclictest4099-21H222:10:212
27976991714,2cyclictest4035-21H222:10:212
27976991714,2cyclictest3991-21H222:10:212
27976991714,2cyclictest3985-21H222:10:212
27976991714,2cyclictest3983-21H222:10:212
27976991714,2cyclictest3981-21H222:10:212
27976991714,2cyclictest26505-21perf22:00:002
27976991714,2cyclictest2004-21cut23:10:132
27976991714,2cyclictest1191-21nfsd23:40:292
27976991714,2cyclictest10030-21awk22:25:182
27976991714,2cyclictest0-21swapper/220:05:012
27976991714,2cyclictest0-21swapper/219:20:302
27976991713,3cyclictest3991-21H222:10:212
27976991713,3cyclictest3989-21H222:10:212
2797699170,2cyclictest3989-21H222:10:212
2797699170,2cyclictest3987-21H222:10:212
2797699170,2cyclictest3981-21H222:10:212
2797699170,2cyclictest1357-21needreboot20:15:182
2797699170,2cyclictest1357-21needreboot20:15:172
2797699170,2cyclictest0-21swapper/220:38:182
2797699170,16cyclictest7424-21https21:25:032
2797699170,16cyclictest7097-21cmp21:25:012
2797699170,16cyclictest4099-21H222:10:212
2797699170,16cyclictest3985-21H222:10:212
2797699170,16cyclictest3983-21H222:10:212
2797699170,16cyclictest3979-21H222:10:212
2797699170,16cyclictest17753-21fschecks_time00:35:142
2797699170,16cyclictest14952-21http_loadtime22:35:152
2797199172,14cyclictest0-21swapper/123:39:301
27971991716,1cyclictest21-21ksoftirqd/121:15:271
27971991714,2cyclictest4035-21H222:10:211
27971991714,2cyclictest3989-21H222:10:211
27971991714,2cyclictest3985-21H222:10:211
27971991714,2cyclictest3983-21H222:10:211
27971991714,2cyclictest3976-21H222:10:211
27971991714,2cyclictest27426-21expr22:00:121
27971991714,2cyclictest24667-21expr21:55:161
27971991714,2cyclictest17761-21fschecks_time00:35:151
27971991714,2cyclictest1348-21lxd22:44:491
27971991714,1cyclictest0-21swapper/123:15:181
27971991713,3cyclictest3979-21H222:10:211
27971991713,3cyclictest10099-21nfsd400:20:181
27971991713,2cyclictest0-21swapper/122:20:541
2797199171,1cyclictest137672sleep100:28:051
2797199171,15cyclictest28167-21grep23:55:191
2797199171,15cyclictest21-21ksoftirqd/119:55:141
2797199171,15cyclictest14309-21chrt00:30:051
2797199170,2cyclictest455-21plymouthd21:10:401
2797199170,2cyclictest3976-21H222:10:211
2797199170,2cyclictest335-21expr00:05:131
2797199170,2cyclictest13565-21cat23:30:141
2797199170,2cyclictest12147-21fschecks_time22:30:151
2797199170,16cyclictest3987-21H222:10:211
2797199170,16cyclictest1423-21nfsd420:15:171
2797199170,16cyclictest1423-21nfsd420:15:171
2797199170,16cyclictest10151-21lxd00:00:381
2797199170,15cyclictest3976-21H222:10:211
27967991715,1cyclictest0-21swapper/000:07:470
27967991714,2cyclictest8517-21nfsd419:30:170
27967991714,2cyclictest3987-21H222:10:210
27967991714,2cyclictest11481-21apache_volume20:35:100
27967991713,3cyclictest14550-21snapd20:25:300
2796799170,2cyclictest3991-21H222:10:210
2796799170,2cyclictest3985-21H222:10:210
2796799170,2cyclictest18756-21expr19:50:110
2796799170,2cyclictest17424-21run-parts23:35:210
2796799170,2cyclictest15945-21lxd22:06:490
2796799170,2cyclictest14183-21missed_timers23:30:170
2796799170,16cyclictest8940-21awk21:25:180
2796799170,16cyclictest6785-21cron23:20:010
2796799170,16cyclictest6785-21cron23:20:010
2796799170,16cyclictest4405-21/usr/sbin/munin23:15:210
2796799170,16cyclictest4099-21H222:10:210
2796799170,16cyclictest4099-21H222:10:210
2796799170,16cyclictest3989-21H222:10:210
2796799170,16cyclictest3989-21H222:10:210
2796799170,16cyclictest3987-21H222:10:210
2796799170,16cyclictest3987-21H222:10:210
2796799170,16cyclictest28134-21nfsd420:05:160
2796799170,16cyclictest20791-21ls20:50:160
2796799170,16cyclictest1550-21cut22:10:170
2796799170,16cyclictest1035-21thermald21:10:210
2796799170,16cyclictest0-21swapper/022:25:140
2796799170,16cyclictest0-21swapper/019:20:290
2796799170,15cyclictest0-21swapper/019:45:140
27976991614,1cyclictest0-21swapper/222:15:132
2797699160,15cyclictest0-21swapper/223:20:142
2797699160,15cyclictest0-21swapper/223:20:132
2797699160,15cyclictest0-21swapper/222:30:142
27971991614,1cyclictest3450-21gsd-color22:55:031
27971991614,1cyclictest0-21swapper/122:45:131
27971991613,2cyclictest8423-21grep19:30:171
2797199160,15cyclictest26126-21ls21:00:161
27967991614,1cyclictest0-21swapper/020:00:130
2796799160,1cyclictest0-21swapper/019:15:210
2796799160,15cyclictest0-21swapper/023:00:140
2796799160,15cyclictest0-21swapper/021:45:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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