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2026-09-24 - 01:30
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Wed Sep 23, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29500992312,1cyclictest0-21swapper/110:25:161
29499992114,6cyclictest0-21swapper/010:26:290
2950199204,15cyclictest0-21swapper/211:15:412
2950199203,1cyclictest12741-21cat10:30:012
2949999200,2cyclictest0-21swapper/008:54:590
2950199192,2cyclictest29812-21proc_pri11:55:192
29501991914,2cyclictest3991-21H222:10:212
2950199190,16cyclictest4035-21H222:10:212
2950099194,1cyclictest0-21swapper/112:34:441
2950099190,16cyclictest4099-21H222:10:211
2950099190,16cyclictest3979-21H222:10:211
29499991914,4cyclictest0-21swapper/008:15:180
2949999190,3cyclictest4035-21H222:10:210
2949999190,16cyclictest3985-21H222:10:210
2949999190,16cyclictest3981-21H222:10:210
2950199182,1cyclictest0-21swapper/208:15:012
2950199182,1cyclictest0-21swapper/208:15:012
29501991817,1cyclictest0-21swapper/211:35:132
29501991816,1cyclictest28-21ksoftirqd/212:17:232
29501991815,2cyclictest5560-21missed_timers08:20:172
29501991815,2cyclictest0-21swapper/212:30:222
2950199181,16cyclictest1526-21lxd08:32:422
2950199180,2cyclictest3976-21H222:10:212
2950199180,17cyclictest993-21dbus-daemon12:05:182
2950199180,17cyclictest3991-21H222:10:212
2950199180,15cyclictest3979-21H222:10:212
29500991815,2cyclictest7508-21/usr/sbin/munin10:20:141
2950099181,2cyclictest32035-21chrt09:06:331
2950099180,3cyclictest5678-21nfsd408:20:171
2950099180,2cyclictest3987-21H222:10:211
2950099180,2cyclictest3979-21H222:10:211
2950099180,17cyclictest0-21swapper/108:44:431
2950099180,15cyclictest3987-21H222:10:211
2949999182,15cyclictest9-21ksoftirqd/011:27:260
29499991816,1cyclictest0-21swapper/007:52:120
29499991816,1cyclictest0-21swapper/007:38:570
29499991814,3cyclictest4035-21H222:10:210
2949999180,2cyclictest3987-21H222:10:210
2949999180,2cyclictest3987-21H222:10:210
2949999180,2cyclictest3976-21H222:10:210
2949999180,2cyclictest3976-21H222:10:210
2949999180,17cyclictest4035-21H222:10:210
2949999180,17cyclictest4035-21H222:10:210
2949999180,17cyclictest0-21swapper/012:20:170
2949999180,15cyclictest3981-21H222:10:210
2949999180,15cyclictest3979-21H222:10:210
2950199172,1cyclictest28-21ksoftirqd/209:00:342
29501991716,1cyclictest28-21ksoftirqd/210:44:022
29501991715,1cyclictest0-21swapper/210:03:012
29501991714,2cyclictest3989-21H222:10:212
29501991714,2cyclictest3989-21H222:10:212
29501991714,2cyclictest3987-21H222:10:212
29501991714,2cyclictest3981-21H222:10:212
29501991714,2cyclictest3976-21H222:10:212
29501991714,2cyclictest3976-21H222:10:212
29501991714,2cyclictest15523-21sort10:35:012
29501991714,2cyclictest13014-21nfsd411:25:172
29501991714,2cyclictest11638-21latency12:20:162
29501991714,2cyclictest10147-21ntpq07:30:202
29501991713,3cyclictest426-21systemd-udevd07:11:522
29501991713,3cyclictest3991-21H222:10:212
29501991713,3cyclictest0-21swapper/209:50:182
2950199171,15cyclictest28-21ksoftirqd/208:00:582
2950199170,2cyclictest5763-21cut12:10:182
2950199170,2cyclictest450-21/usr/sbin/munin09:10:132
2950199170,2cyclictest4116-21if_enp1s007:20:162
2950199170,2cyclictest3989-21H222:10:212
2950199170,2cyclictest3979-21H222:10:212
2950199170,2cyclictest31326-21grep12:00:142
2950199170,2cyclictest27223-21apache_volume10:55:112
2950199170,2cyclictest26365-21/usr/sbin/munin09:55:162
2950199170,2cyclictest22655-21interrupts10:45:162
2950199170,2cyclictest20125-21cstates07:50:132
2950199170,2cyclictest16621-21cat10:35:132
2950199170,2cyclictest15644-21ls11:30:202
2950199170,2cyclictest14506-21snapd10:20:282
2950199170,2cyclictest14500-21snapd09:32:382
2950199170,2cyclictest14500-21snapd09:32:382
2950199170,2cyclictest14478-21grep07:40:132
2950199170,2cyclictest10788-21switchtime09:25:202
2950199170,16cyclictest8944-21munin-plugin-st09:25:012
2950199170,16cyclictest455-21plymouthd09:40:162
2950199170,16cyclictest3058-21rs:main2
2950199170,16cyclictest29294-21nfsd408:05:212
2950199170,16cyclictest26036-21sendmail_mailst10:50:252
2950199170,16cyclictest26036-21sendmail_mailst10:50:242
2950199170,16cyclictest17777-21fschecks_count07:45:152
2950199170,16cyclictest17735-21ntp_offset08:40:202
2950199170,16cyclictest14506-21snapd10:17:572
2950199170,16cyclictest1351-21lxd09:18:432
2950199170,16cyclictest11392-21grep11:25:002
29500991715,1cyclictest21-21ksoftirqd/107:47:441
29500991714,2cyclictest993-21dbus-daemon11:45:201
29500991714,2cyclictest4035-21H222:10:211
29500991714,2cyclictest3991-21H222:10:211
29500991714,2cyclictest3989-21H222:10:211
29500991714,2cyclictest3989-21H222:10:211
29500991714,2cyclictest3989-21H222:10:211
29500991714,2cyclictest3987-21H222:10:211
29500991714,2cyclictest3987-21H222:10:211
29500991714,2cyclictest3981-21H222:10:211
29500991714,2cyclictest3979-21H222:10:211
29500991714,2cyclictest3979-21H222:10:211
29500991714,2cyclictest27665-21expr10:55:141
29500991714,2cyclictest24509-21/usr/sbin/munin08:55:221
29500991714,2cyclictest20080-21nfsd412:35:171
29500991714,2cyclictest20080-21nfsd412:35:171
29500991714,2cyclictest18145-21fschecks_time09:40:151
29500991714,2cyclictest15945-21lxd10:36:431
29500991714,2cyclictest15062-21sensors08:35:201
29500991714,2cyclictest0-21swapper/110:05:011
2950099170,3cyclictest3991-21H222:10:211
2950099170,2cyclictest4099-21H222:10:211
2950099170,2cyclictest4035-21H222:10:211
2950099170,2cyclictest3976-21H222:10:211
2950099170,2cyclictest3976-21H222:10:211
2950099170,2cyclictest17564-21expr11:35:141
2950099170,2cyclictest1060-21thermald08:33:431
2950099170,1cyclictest3987-21H222:10:211
2950099170,1cyclictest3987-21H222:10:211
2950099170,1cyclictest3985-21H222:10:211
2950099170,1cyclictest3981-21H222:10:211
2950099170,16cyclictest5997-21sendmail-msp09:20:011
2950099170,16cyclictest4099-21H222:10:211
2950099170,16cyclictest3991-21H222:10:211
2950099170,16cyclictest3987-21H222:10:211
2950099170,16cyclictest3987-21H222:10:211
2950099170,16cyclictest3985-21H222:10:211
2950099170,16cyclictest3985-21H222:10:211
2950099170,16cyclictest3981-21H222:10:211
2950099170,16cyclictest3979-21H222:10:211
2950099170,16cyclictest32347-21nfsd410:05:171
2950099170,16cyclictest29150-21if_enp1s011:55:151
2950099170,16cyclictest23274-21pzem_energy10:45:201
2950099170,16cyclictest14941-21awk10:30:281
2950099170,16cyclictest1475-21uname09:10:181
2950099170,16cyclictest0-21swapper/110:40:121
2950099170,16cyclictest0-21swapper/109:01:491
29499991715,1cyclictest26539-21nfsd408:00:160
29499991715,1cyclictest0-21swapper/009:30:160
29499991715,1cyclictest0-21swapper/009:30:150
29499991714,2cyclictest4099-21H222:10:210
29499991714,2cyclictest4035-21H222:10:210
29499991714,2cyclictest3991-21H222:10:210
29499991714,2cyclictest3981-21H222:10:210
29499991714,2cyclictest3981-21H222:10:210
29499991714,2cyclictest3976-21H222:10:210
29499991714,2cyclictest3976-21H222:10:210
29499991714,2cyclictest11431-21perf09:30:010
29499991713,3cyclictest3976-21H222:10:210
29499991713,2cyclictest4099-21H222:10:210
29499991713,2cyclictest0-21swapper/009:40:140
2949999171,15cyclictest3976-21H222:10:210
2949999170,2cyclictest6038-21apache_processe07:25:120
2949999170,2cyclictest3976-21H222:10:210
2949999170,2cyclictest3688-21/usr/sbin/munin12:05:190
2949999170,2cyclictest32713-21cut07:15:130
2949999170,2cyclictest27017-21ntp_kernel_err09:55:190
2949999170,2cyclictest2461-21cat09:10:240
2949999170,2cyclictest1829-21systemd-journal10:00:030
2949999170,2cyclictest16235-21cpuspeed_turbos12:30:180
2949999170,2cyclictest14918-21ls09:35:140
2949999170,2cyclictest14786-21/usr/sbin/munin12:25:190
2949999170,16cyclictest4099-21H222:10:210
2949999170,16cyclictest4035-21H222:10:210
2949999170,16cyclictest4035-21H222:10:210
2949999170,16cyclictest3081-21postgres10:44:110
2949999170,16cyclictest29068-21sed08:05:190
2949999170,16cyclictest21717-21cut08:50:010
2949999170,16cyclictest15379-21python310:35:010
2949999170,16cyclictest15301-21/usr/sbin/munin07:40:160
2949999170,16cyclictest1085-21gdbus08:55:230
29501991614,1cyclictest0-21swapper/209:35:112
29501991614,1cyclictest0-21swapper/207:15:172
29501991613,2cyclictest6034-21/usr/sbin/munin07:25:102
29501991613,2cyclictest3987-21H222:10:212
29501991612,3cyclictest490-21cut11:05:132
2950199160,15cyclictest31056-21missed_timers11:00:172
2950199160,15cyclictest22048-21timerwakeupswit09:45:212
2950199160,15cyclictest13998-21fschecks_time12:25:142
29500991614,1cyclictest24820-21ls10:50:161
29500991614,1cyclictest24820-21ls10:50:161
29500991614,1cyclictest0-21swapper/109:20:151
29500991614,1cyclictest0-21swapper/107:55:141
2950099160,1cyclictest0-21swapper/108:10:181
2950099160,1cyclictest0-21swapper/108:10:181
2950099160,15cyclictest4713-21ntpq07:20:191
2950099160,15cyclictest0-21swapper/111:50:211
2950099160,15cyclictest0-21swapper/109:51:321
2950099160,15cyclictest0-21swapper/109:25:111
2950099160,15cyclictest0-21swapper/107:15:181
29499991614,1cyclictest0-21swapper/011:30:170
29499991614,1cyclictest0-21swapper/011:17:310
29499991614,1cyclictest0-21swapper/009:00:140
29499991613,2cyclictest9128-21expr07:30:150
29499991613,2cyclictest24046-21cat09:50:200
2949999160,2cyclictest7529-21apache_processe10:20:130
2949999160,2cyclictest30150-21grep09:05:140
2949999160,2cyclictest27353-21grep10:55:140
2949999160,2cyclictest24334-21cut10:50:010
2949999160,1cyclictest0-21swapper/009:20:170
2949999160,15cyclictest4333-21sed07:20:170
2949999160,15cyclictest3976-21H222:10:210
2949999160,15cyclictest22064-21timerwakeupswit09:45:210
2949999160,15cyclictest0-21swapper/010:35:230
2949999160,15cyclictest0-21swapper/009:15:140
2949999160,15cyclictest0-21swapper/008:30:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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