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2026-04-20 - 16:13
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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 Mon Apr 20, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3184799250,24cyclictest21-21ksoftirqd/112:31:281
31842992321,1cyclictest9-21ksoftirqd/008:35:010
3184299230,18cyclictest0-21swapper/009:35:050
31847992117,3cyclictest0-21swapper/109:43:391
31847992111,10cyclictest0-21swapper/109:15:201
3185199200,19cyclictest24280-21cpuspeed_turbos08:50:132
3184799204,15cyclictest0-21swapper/108:50:061
31847992018,1cyclictest3979-21H222:10:211
3184799200,17cyclictest0-21swapper/108:05:021
3185199193,15cyclictest3991-21H222:10:212
3185199192,16cyclictest4161-21expr11:05:142
3185199191,16cyclictest2069-21systemd-udevd08:10:532
3185199190,16cyclictest4099-21H222:10:212
31847991917,1cyclictest0-21swapper/107:16:181
31847991913,4cyclictest0-21swapper/110:48:181
3184799190,16cyclictest4099-21H222:10:211
3184299192,16cyclictest30452-21cut08:05:010
31842991913,4cyclictest22821-21cpuspeed_turbos07:50:130
3184299190,18cyclictest0-21swapper/007:20:120
3184299190,17cyclictest1351-21lxd12:36:430
31851991816,1cyclictest0-21swapper/211:00:052
31851991816,1cyclictest0-21swapper/209:35:472
3185199181,2cyclictest15607-21cat12:20:202
3185199180,1cyclictest0-21swapper/207:30:142
3184799182,1cyclictest0-21swapper/107:52:061
3184799182,15cyclictest11236-21cut10:20:141
31847991815,2cyclictest3989-21H222:10:211
31847991815,2cyclictest26261-21cpuspeed_turbos11:45:141
31847991814,3cyclictest0-21swapper/111:17:501
3184799180,2cyclictest3979-21H222:10:211
3184799180,17cyclictest3976-21H222:10:211
3184799180,17cyclictest15600-21grep11:25:141
3184299182,1cyclictest256272sleep009:49:510
31842991816,1cyclictest9760-21latency07:25:170
31842991814,3cyclictest16830-21snapd08:10:180
31842991813,4cyclictest426-21systemd-udevd11:44:510
31842991811,6cyclictest18823-21latency_hist10:35:010
31842991811,6cyclictest18823-21latency_hist10:35:000
3184299181,16cyclictest11667-21cut09:25:010
3184299180,3cyclictest23662-21processes10:40:200
3184299180,2cyclictest4099-21H222:10:210
3184299180,17cyclictest5945-21munin-run09:15:000
3184299180,16cyclictest399-20systemd-journal11:05:010
31851991716,1cyclictest28-21ksoftirqd/209:50:392
31851991715,1cyclictest0-21swapper/208:47:342
31851991715,1cyclictest0-21swapper/208:25:192
31851991715,1cyclictest0-21swapper/207:15:162
31851991714,2cyclictest8231-21timerwakeupswit09:15:222
31851991714,2cyclictest467-21cat11:00:002
31851991714,2cyclictest3996-21awk10:05:192
31851991714,2cyclictest3983-21H222:10:212
31851991714,2cyclictest26661-21timerandwakeup10:45:212
31851991714,2cyclictest23935-21vmstat12:35:232
31851991714,2cyclictest21686-21sed12:35:002
31851991714,2cyclictest21076-21nfsd407:45:182
31851991714,2cyclictest20410-21ls08:40:232
31851991714,2cyclictest13756-21awk11:20:212
31851991714,2cyclictest0-21swapper/207:26:352
31851991713,3cyclictest3983-21H222:10:212
3185199170,2cyclictest9716-21nvmesmart_nvme010:15:192
3185199170,2cyclictest3976-21H222:10:212
3185199170,2cyclictest28205-21ntp_kernel_err08:55:182
3185199170,2cyclictest24555-21netstat09:45:192
3185199170,2cyclictest24503-21nfsd411:40:192
3185199170,2cyclictest16572-21sed07:39:012
3185199170,2cyclictest14254-21latency_hist09:30:012
3185199170,2cyclictest12737-21switchtime10:20:212
3185199170,1cyclictest0-21swapper/212:12:072
3185199170,16cyclictest7121-21cstates11:10:142
3185199170,16cyclictest6830-21perf08:20:002
3185199170,16cyclictest4099-21H222:10:212
3185199170,16cyclictest3991-21H222:10:212
3185199170,16cyclictest32539-21sh09:05:012
3185199170,16cyclictest31534-21awk10:00:012
3185199170,16cyclictest31021-21cpuspeed_turbos08:05:142
3185199170,16cyclictest25956-21cut07:55:162
3185199170,16cyclictest24384-21ls07:50:212
3185199170,16cyclictest21745-21ntp_kernel_err11:35:172
3185199170,16cyclictest19641-21expr10:35:152
3185199170,16cyclictest18089-21pzem_voltage12:25:202
3185199170,16cyclictest16749-21snapd10:50:192
3185199170,16cyclictest15778-21nfsd409:30:182
3185199170,16cyclictest1517-21lxd08:38:422
3185199170,16cyclictest11034-21awk11:15:212
3185199170,16cyclictest0-21swapper/211:25:132
3185199170,15cyclictest4099-21H222:10:212
31847991715,1cyclictest17882-21http_loadtime07:40:181
31847991715,1cyclictest0-21swapper/112:05:321
31847991715,1cyclictest0-21swapper/110:10:211
31847991715,1cyclictest0-21swapper/108:28:001
31847991714,2cyclictest683-21tail10:00:171
31847991714,2cyclictest4787-21chrt10:07:231
31847991714,2cyclictest4112-21cat11:05:131
31847991714,2cyclictest4005-21awk12:00:181
31847991714,2cyclictest3991-21H222:10:211
31847991714,2cyclictest28585-21cat08:55:211
31847991714,2cyclictest18578-21kernelversion11:30:171
31847991714,2cyclictest17042-21expr10:30:121
31847991714,2cyclictest17042-21expr10:30:121
31847991714,2cyclictest15437-21cat10:25:221
31847991714,2cyclictest1079-21cups-browsed08:30:201
31847991714,2cyclictest10498-21ntp_kernel_pll_09:20:191
31847991714,2cyclictest10001-21nfsd407:25:191
31847991713,3cyclictest21726-21munin-run10:40:011
31847991713,3cyclictest0-21swapper/109:25:191
3184799171,2cyclictest21097-21http_loadtime11:35:141
3184799171,15cyclictest15812-21mailstats07:35:211
3184799171,15cyclictest0-21swapper/108:11:131
3184799170,2cyclictest993-21dbus-daemon10:55:211
3184799170,2cyclictest694-21cron08:09:001
3184799170,2cyclictest3979-21H222:10:211
3184799170,2cyclictest31974-21python309:05:001
3184799170,2cyclictest31697-21cpuspeed_turbos11:55:131
3184799170,2cyclictest16755-21snapd08:37:491
3184799170,16cyclictest8554-21cut08:20:171
3184799170,16cyclictest3981-21H222:10:211
3184799170,16cyclictest29319-21switchtime10:50:201
3184799170,16cyclictest29160-21cron09:55:001
3184799170,16cyclictest17365-21awk12:25:151
3184799170,16cyclictest16793-21snapd12:10:171
3184799170,16cyclictest1594-21systemd09:14:521
3184799170,16cyclictest14699-21tr09:30:131
3184799170,16cyclictest0-21swapper/107:31:481
3184299172,1cyclictest0-21swapper/007:36:040
31842991717,0cyclictest0-21swapper/009:53:120
31842991715,1cyclictest17247-21cpuspeed_turbos07:40:150
31842991714,2cyclictest9926-21apache208:25:010
31842991714,2cyclictest6898-21proc_pri12:05:190
31842991714,2cyclictest4099-21H222:10:210
31842991714,2cyclictest3983-21H222:10:210
31842991714,2cyclictest31510-21grep10:55:170
31842991714,2cyclictest19546-21expr12:30:130
31842991714,2cyclictest1856-21systemd-udevd10:26:520
31842991714,2cyclictest0-21swapper/012:11:480
3184299171,15cyclictest20710-21cpuspeed_turbos09:40:130
3184299170,2cyclictest26768-21timerwakeupswit10:45:220
3184299170,2cyclictest20717-21cat11:35:140
3184299170,2cyclictest2069-21systemd-udevd11:30:520
3184299170,2cyclictest1829-21systemd-journal11:19:300
3184299170,2cyclictest1085-21gdbus08:15:220
3184299170,1cyclictest111rcu_preempt11:25:150
3184299170,16cyclictest5331-21processes11:05:210
3184299170,16cyclictest3981-21H222:10:210
3184299170,16cyclictest3053-21systemd-logind09:08:510
3184299170,16cyclictest29893-21grep11:50:180
3184299170,16cyclictest2872-21systemd-logind10:50:510
3184299170,16cyclictest2317-21sed12:00:020
3184299170,16cyclictest16755-21snapd08:52:480
3184299170,16cyclictest16528-21postgres09:30:340
3184299170,16cyclictest1563-21python312:00:000
3184299170,16cyclictest1525-21lxd07:12:430
3184299170,16cyclictest11994-21cpuspeed_turbos09:25:130
3184299170,15cyclictest3987-21H222:10:210
31851991614,1cyclictest11068-21apt-get12:15:142
31851991614,1cyclictest0-21swapper/210:30:202
31851991614,1cyclictest0-21swapper/210:30:192
31851991614,1cyclictest0-21swapper/210:00:122
31851991614,1cyclictest0-21swapper/209:00:132
31851991614,1cyclictest0-21swapper/208:20:012
31851991614,1cyclictest0-21swapper/207:40:132
31851991613,2cyclictest17855-21cpuspeed_turbos11:30:122
3185199160,1cyclictest0-21swapper/212:05:142
3185199160,1cyclictest0-21swapper/208:00:152
3185199160,15cyclictest5560-21/usr/sbin/munin10:10:142
3185199160,15cyclictest3989-21H222:10:212
3185199160,15cyclictest14072-21cat10:25:142
3185199160,15cyclictest0-21swapper/209:20:152
3185199160,15cyclictest0-21swapper/207:20:152
31847991614,1cyclictest0-21swapper/112:35:191
31847991614,1cyclictest0-21swapper/108:45:141
31847991614,1cyclictest0-21swapper/108:40:141
31847991614,1cyclictest0-21swapper/108:15:181
31847991614,1cyclictest0-21swapper/107:20:131
31847991613,2cyclictest6681-21sshd11:10:031
31847991613,2cyclictest3985-21H222:10:211
3184799160,15cyclictest3981-21H222:10:211
3184799160,15cyclictest30048-21nfsd411:50:171
3184799160,15cyclictest13822-21grep12:20:131
3184799160,15cyclictest0-21swapper/109:35:141
3184799160,15cyclictest0-21swapper/109:05:011
31842991615,1cyclictest13987-21latency_hist07:35:020
31842991614,1cyclictest12818-21timerandwakeup12:15:210
31842991614,1cyclictest0-21swapper/011:10:160
31842991614,1cyclictest0-21swapper/010:35:190
31842991614,1cyclictest0-21swapper/010:00:160
31842991614,1cyclictest0-21swapper/008:55:140
31842991614,1cyclictest0-21swapper/008:35:180
31842991614,1cyclictest0-21swapper/007:45:160
31842991613,2cyclictest12428-21expr11:20:130
31842991613,2cyclictest11328-21cstates10:20:130
3184299161,1cyclictest3979-21H222:10:210
3184299160,2cyclictest8813-21expr10:15:130
3184299160,15cyclictest2707-21expr10:05:150
3184299160,15cyclictest2007-21systemd-journal09:17:010
3184299160,15cyclictest0-21swapper/012:25:140
3184299160,15cyclictest0-21swapper/009:00:110
3184299160,15cyclictest0-21swapper/008:45:130
3184299160,15cyclictest0-21swapper/008:05:150
3184299160,15cyclictest0-21swapper/007:55:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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