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2026-05-29 - 19:54
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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 29, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
116099242,4cyclictest0-21swapper/008:20:010
116199230,22cyclictest0-21swapper/111:52:331
116299213,2cyclictest24707-21timerwakeupswit12:00:212
1162992016,3cyclictest0-21swapper/207:12:522
116199202,17cyclictest0-21swapper/110:00:131
1161992017,2cyclictest3985-21H222:10:211
1161992017,2cyclictest0-21swapper/111:00:191
1161992017,2cyclictest0-21swapper/108:15:011
116099204,15cyclictest0-21swapper/010:40:140
116099203,11cyclictest0-21swapper/007:33:230
1162991916,2cyclictest993-21dbus-daemon11:25:202
1162991916,2cyclictest28-21ksoftirqd/209:38:322
1162991916,2cyclictest25099-21grep11:10:162
1162991915,3cyclictest3976-21H222:10:212
1162991915,3cyclictest0-21swapper/208:46:222
116299190,17cyclictest0-21swapper/209:48:222
116299190,16cyclictest3989-21H222:10:212
1161991917,1cyclictest0-21swapper/112:10:121
1161991917,1cyclictest0-21swapper/108:04:481
1161991916,2cyclictest3991-21H222:10:211
1161991916,2cyclictest3991-21H222:10:211
1161991916,1cyclictest0-21swapper/108:17:551
1161991915,3cyclictest0-21swapper/111:38:011
1161991914,4cyclictest0-21swapper/110:13:351
1161991914,2cyclictest3981-21H222:10:211
116199191,16cyclictest2007-21systemd-journal09:50:321
116199191,16cyclictest0-21swapper/112:10:011
116199190,16cyclictest3981-21H222:10:211
1160991917,1cyclictest0-21swapper/011:35:040
1160991917,1cyclictest0-21swapper/009:58:530
1160991917,1cyclictest0-21swapper/009:21:370
1160991916,2cyclictest4983-21expr12:25:120
116099190,18cyclictest0-21swapper/011:01:550
116099190,16cyclictest3976-21H222:10:210
1162991817,1cyclictest28-21ksoftirqd/210:14:512
1162991816,1cyclictest0-21swapper/211:57:592
1162991816,1cyclictest0-21swapper/211:48:512
1162991816,1cyclictest0-21swapper/211:10:012
1162991816,1cyclictest0-21swapper/208:34:042
1162991815,2cyclictest0-21swapper/207:20:132
1162991814,3cyclictest6056-21cat10:40:012
1162991813,2cyclictest3991-21H222:10:212
116299181,2cyclictest0-21swapper/212:25:132
116299180,3cyclictest31651-21anvil10:28:532
116299180,2cyclictest5261-21latency_hist07:20:012
116299180,2cyclictest4035-21H222:10:212
116299180,2cyclictest3989-21H222:10:212
116299180,2cyclictest3976-21H222:10:212
116299180,17cyclictest993-21dbus-daemon11:52:102
116299180,17cyclictest10623-21latency_hist08:55:002
116299180,17cyclictest0-21swapper/209:50:122
116299180,15cyclictest3981-21H222:10:212
1161991814,3cyclictest3987-21H222:10:211
1161991811,6cyclictest870-21systemd-logind08:32:521
116199180,15cyclictest3981-21H222:10:211
116099182,1cyclictest1849-21chrt11:27:300
116099182,15cyclictest9-21ksoftirqd/007:10:150
116099181,16cyclictest6055-21dpkg10:40:000
116099180,3cyclictest1829-21systemd-journal12:25:000
116099180,2cyclictest3976-21H222:10:210
116099180,2cyclictest3976-21H222:10:210
116099180,2cyclictest3976-21H222:10:210
116099180,17cyclictest31225-21apache_processe12:15:110
116099180,16cyclictest23581-21latency_hist10:15:010
1162991716,1cyclictest0-21swapper/207:38:292
1162991715,1cyclictest25890-21cat12:05:132
1162991715,1cyclictest11702chrt12:19:542
1162991715,1cyclictest11072-21timerwakeupswit10:45:212
1162991714,2cyclictest6972-21ps11:35:182
1162991714,2cyclictest3979-21H222:10:212
1162991714,2cyclictest2932-21nvmesmart_nvme008:35:192
1162991714,2cyclictest2932-21nvmesmart_nvme008:35:182
1162991714,2cyclictest22686-21cut09:15:112
1162991714,2cyclictest22184-21chrt08:03:342
1162991714,2cyclictest19756-21ntpq10:05:192
116299171,15cyclictest16275-21nfsd410:55:192
116299171,15cyclictest12683-21chrt12:38:532
116299170,2cyclictest9709-21chrt12:32:112
116299170,2cyclictest4035-21H222:10:212
116299170,2cyclictest4035-21H222:10:212
116299170,2cyclictest30777-21taskset12:14:502
116299170,2cyclictest27778-21ntp_states08:15:172
116299170,2cyclictest19497-21awk11:00:182
116299170,2cyclictest16141-21expr10:00:132
116299170,1cyclictest3991-21H222:10:212
116299170,17cyclictest0-21swapper/210:42:392
116299170,16cyclictest993-21dbus-daemon11:20:202
116299170,16cyclictest399-20systemd-journal09:10:022
116299170,16cyclictest3991-21H222:10:212
116299170,16cyclictest3987-21H222:10:212
116299170,16cyclictest30605-21expr08:25:142
116299170,16cyclictest15707-21python307:50:022
116299170,15cyclictest3983-21H222:10:212
1161991715,1cyclictest0-21swapper/112:30:151
1161991715,1cyclictest0-21swapper/107:50:101
1161991714,2cyclictest4035-21H222:10:211
1161991714,2cyclictest3991-21H222:10:211
1161991714,2cyclictest3987-21H222:10:211
1161991714,2cyclictest3976-21H222:10:211
1161991714,2cyclictest32278-21expr11:25:121
1161991714,2cyclictest31960-21grep09:30:181
1161991714,2cyclictest3053-21systemd-logind10:48:521
1161991714,2cyclictest28816-21if_lxdbr009:25:161
1161991714,2cyclictest17395-21perf10:59:591
1161991714,2cyclictest14550-21snapd07:32:441
1161991714,2cyclictest11260-21irqstats12:35:141
1161991714,2cyclictest10712-21cron11:45:011
1161991714,1cyclictest0-21swapper/110:25:481
1161991713,3cyclictest3987-21H222:10:211
116199171,1cyclictest3991-21H222:10:211
116199170,2cyclictest5513-21if_eno112:25:151
116199170,2cyclictest3976-21H222:10:211
116199170,2cyclictest20601-21expr11:55:131
116199170,2cyclictest12280-21dpkg10:50:011
116199170,16cyclictest3989-21H222:10:211
116199170,16cyclictest3985-21H222:10:211
116199170,16cyclictest3981-21H222:10:211
116199170,16cyclictest3976-21H222:10:211
116199170,16cyclictest29676-21expr11:20:131
116199170,16cyclictest24635-21if_enp1s011:10:141
116199170,16cyclictest23345-21cat12:00:121
116199170,16cyclictest21139-21nvmesmart_nvme009:10:201
116199170,16cyclictest14298-21cpuspeed_turbos09:00:131
116199170,16cyclictest14298-21cpuspeed_turbos09:00:131
116199170,16cyclictest0-21swapper/109:40:111
1160991715,1cyclictest3983-21H222:10:210
1160991715,1cyclictest0-21swapper/008:05:450
1160991714,2cyclictest3983-21H222:10:210
1160991714,2cyclictest30550-21taskset12:11:440
1160991714,2cyclictest26830-21awk12:05:160
1160991714,2cyclictest26146-21perf11:15:000
1160991714,2cyclictest22877-21acpi12:00:100
1160991714,2cyclictest15692-21fschecks_count10:55:140
1160991714,2cyclictest14776-21cat11:50:160
1160991714,2cyclictest11254-21grep11:45:120
116099170,2cyclictest9629-21nfsd411:40:180
116099170,2cyclictest9455-21cat10:45:140
116099170,2cyclictest3987-21H222:10:210
116099170,2cyclictest3987-21H222:10:210
116099170,2cyclictest3983-21H222:10:210
116099170,2cyclictest29678-21true08:25:000
116099170,2cyclictest2933-21nvmesmart_nvme008:35:190
116099170,2cyclictest2933-21nvmesmart_nvme008:35:180
116099170,2cyclictest1426-21cstates09:35:140
116099170,2cyclictest0-21swapper/007:20:140
116099170,1cyclictest0-21swapper/007:16:330
116099170,17cyclictest0-21swapper/011:30:220
116099170,16cyclictest8463-21nvmesmart_nvme009:45:210
116099170,16cyclictest7629-21apache_accesses12:30:120
116099170,16cyclictest5098-21munin-run08:45:000
116099170,16cyclictest30710-21cstates08:25:130
116099170,16cyclictest26932-21/usr/sbin/munin10:20:100
116099170,16cyclictest22683-21grep09:15:120
116099170,16cyclictest21755-21if_enp1s011:05:150
116099170,16cyclictest20907-21grep09:10:170
116099170,16cyclictest17586-21idleruntime09:05:160
116099170,16cyclictest16452-21find07:50:070
116099170,16cyclictest15875-21cpuspeed_turbos10:00:120
116099170,16cyclictest14729-21sed10:55:010
116099170,16cyclictest10695-21cat12:35:120
116099170,16cyclictest0-21swapper/010:16:310
116099170,16cyclictest0-21swapper/007:57:050
1162991614,1cyclictest0-21swapper/208:13:442
1162991614,1cyclictest0-21swapper/207:50:142
1162991614,1cyclictest0-21swapper/207:30:152
1162991613,2cyclictest19304-21smtp07:56:552
1162991611,3cyclictest0-21swapper/208:20:522
116299160,2cyclictest1801-21expr12:20:122
116299160,1cyclictest27910-21/usr/sbin/munin09:25:152
116299160,1cyclictest0-21swapper/211:15:112
116299160,1cyclictest0-21swapper/209:30:212
116299160,15cyclictest12465-21expr10:50:122
116299160,15cyclictest0-21swapper/209:05:142
116299160,15cyclictest0-21swapper/207:29:102
1161991614,1cyclictest8229-21apache_accesses08:50:101
1161991614,1cyclictest3987-21H222:10:211
1161991614,1cyclictest3450-21gsd-color11:15:131
1161991614,1cyclictest21-21ksoftirqd/107:20:141
1161991614,1cyclictest0-21swapper/112:20:061
1161991614,1cyclictest0-21swapper/107:15:361
1161991613,2cyclictest9695-21apt-key09:50:011
116199160,16cyclictest9165-21sort11:40:141
116199160,15cyclictest399-20systemd-journal08:05:021
116199160,15cyclictest3979-21H222:10:211
116199160,15cyclictest1525-21lxd07:28:411
116199160,15cyclictest0-21swapper/112:15:151
116199160,15cyclictest0-21swapper/111:30:131
116199160,15cyclictest0-21swapper/110:15:131
116199160,15cyclictest0-21swapper/109:55:161
116199160,15cyclictest0-21swapper/109:20:121
116199160,15cyclictest0-21swapper/108:25:131
1160991615,1cyclictest9-21ksoftirqd/008:11:380
1160991614,1cyclictest0-21swapper/008:55:160
1160991614,1cyclictest0-21swapper/007:47:380
1160991614,1cyclictest0-21swapper/007:26:510
1160991613,2cyclictest20191-21cpuspeed_turbos08:00:140
116099160,1cyclictest0-21swapper/010:30:200
116099160,1cyclictest0-21swapper/010:25:190
116099160,15cyclictest26535-21find11:15:100
116099160,15cyclictest19018-21/usr/sbin/munin10:05:140
116099160,15cyclictest0-21swapper/009:50:010
116099160,15cyclictest0-21swapper/009:40:140
116099160,15cyclictest0-21swapper/009:25:180
116099140,14cyclictest0-21swapper/008:30:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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