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2026-05-20 - 21:47
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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 May 20, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1722899240,6cyclictest31886-21nvmesmart_nvme008:30:212
1722799225,9cyclictest0-21swapper/112:00:231
1722899210,20cyclictest870-21systemd-logind08:14:412
17228992020,0cyclictest0-21swapper/209:56:192
17228992013,4cyclictest8178-21fschecks_count07:50:162
1722799207,11cyclictest0-21swapper/109:45:201
1722799203,16cyclictest0-21swapper/111:26:461
1722899193,15cyclictest27264-21acpi11:15:102
17228991917,1cyclictest28-21ksoftirqd/211:45:142
17228991915,3cyclictest271rcuc/209:08:392
1722899190,3cyclictest26778-21cpuspeed_turbos09:20:112
1722899190,18cyclictest271rcuc/210:52:362
1722799193,1cyclictest21-21ksoftirqd/112:16:361
1722799193,15cyclictest21-21ksoftirqd/109:39:421
17227991917,1cyclictest21-21ksoftirqd/110:24:571
17227991917,1cyclictest0-21swapper/110:44:261
17227991916,2cyclictest14882-21open_files10:50:191
1722799190,2cyclictest3987-21H222:10:211
1722799190,18cyclictest870-21systemd-logind07:46:521
1722699194,1cyclictest0-21swapper/011:11:240
17226991917,1cyclictest9-21ksoftirqd/012:00:020
17226991917,1cyclictest0-21swapper/007:35:230
17226991916,2cyclictest4176-21smtp07:41:510
17226991914,2cyclictest3985-21H222:10:210
1722699190,18cyclictest3979-21H222:10:210
1722699190,16cyclictest3985-21H222:10:210
1722699190,16cyclictest3979-21H222:10:210
1722899182,1cyclictest28-21ksoftirqd/207:16:372
1722899182,1cyclictest251772chrt07:23:192
1722899182,15cyclictest28-21ksoftirqd/212:22:582
1722899182,15cyclictest28-21ksoftirqd/210:21:342
1722899182,15cyclictest28-21ksoftirqd/209:00:222
17228991816,1cyclictest271rcuc/208:55:212
17228991815,2cyclictest0-21swapper/209:26:262
17228991814,3cyclictest2883-21tail10:30:172
1722899180,2cyclictest0-21swapper/209:36:022
1722899180,1cyclictest3991-21H222:10:212
1722899180,17cyclictest3989-21H222:10:212
1722899180,17cyclictest3983-21H222:10:212
1722899180,17cyclictest3981-21H222:10:212
1722899180,17cyclictest3979-21H222:10:212
1722899180,17cyclictest23848-21fschecks_count12:05:132
1722899180,17cyclictest0-21swapper/207:55:142
1722899180,15cyclictest271rcuc/209:45:402
1722799183,15cyclictest21-21ksoftirqd/110:47:411
1722799182,15cyclictest21-21ksoftirqd/112:10:521
17227991815,2cyclictest3981-21H222:10:211
17227991814,3cyclictest3989-21H222:10:211
17227991814,3cyclictest3985-21H222:10:211
17227991814,3cyclictest3981-21H222:10:211
17227991814,3cyclictest3981-21H222:10:211
17227991814,3cyclictest0-21swapper/112:26:531
17227991814,3cyclictest0-21swapper/109:58:521
17227991814,2cyclictest2957-21rtkit-daemon08:18:401
17227991813,3cyclictest0-21swapper/111:40:351
1722799180,3cyclictest3987-21H222:10:211
1722799180,2cyclictest3989-21H222:10:211
1722799180,2cyclictest3989-21H222:10:211
1722799180,17cyclictest4099-21H222:10:211
1722799180,17cyclictest3987-21H222:10:211
1722699182,2cyclictest3987-21H222:10:210
17226991816,1cyclictest21469-21nfsd407:15:180
17226991816,1cyclictest0-21swapper/010:40:430
17226991816,1cyclictest0-21swapper/010:33:030
17226991815,1cyclictest0-21swapper/009:27:450
17226991814,3cyclictest0-21swapper/010:46:250
17226991814,2cyclictest3981-21H222:10:210
1722699181,2cyclictest3985-21H222:10:210
1722699180,3cyclictest3983-21H222:10:210
1722699180,2cyclictest3981-21H222:10:210
1722699180,16cyclictest4035-21H222:10:210
1722699180,16cyclictest399-20systemd-journal11:00:000
17228991715,1cyclictest3991-21H222:10:212
17228991715,1cyclictest28-21ksoftirqd/211:57:092
17228991715,1cyclictest28-21ksoftirqd/209:50:172
17228991715,1cyclictest271rcuc/211:35:102
17228991715,1cyclictest271rcuc/208:40:152
17228991715,1cyclictest271rcuc/208:40:142
17228991714,2cyclictest31161-21/usr/sbin/munin07:35:162
17228991714,2cyclictest27735-21chrt07:26:082
17228991714,2cyclictest26989-21apache208:25:022
17228991714,2cyclictest19101-21systemctl07:10:232
17228991713,3cyclictest3987-21H222:10:212
17228991713,3cyclictest3981-21H222:10:212
1722899171,1cyclictest28-21ksoftirqd/208:25:232
1722899171,15cyclictest28-21ksoftirqd/212:30:142
1722899171,15cyclictest28-21ksoftirqd/211:25:172
1722899171,15cyclictest28-21ksoftirqd/210:25:122
1722899171,15cyclictest28-21ksoftirqd/210:25:122
1722899171,15cyclictest28-21ksoftirqd/207:46:162
1722899171,15cyclictest0-21swapper/212:25:172
1722899170,2cyclictest4192-21cut11:30:142
1722899170,2cyclictest4035-21H222:10:212
1722899170,1cyclictest3989-21H222:10:212
1722899170,16cyclictest7952-21expr12:35:132
1722899170,16cyclictest455-21plymouthd09:40:182
1722899170,16cyclictest3991-21H222:10:212
1722899170,16cyclictest3985-21H222:10:212
1722899170,16cyclictest23943-21sort11:09:002
1722899170,16cyclictest21815-21awk12:00:192
1722899170,16cyclictest1778-21/usr/sbin/munin07:40:112
1722899170,15cyclictest843-21systemd-network09:30:332
17227991714,2cyclictest3991-21H222:10:211
17227991714,2cyclictest3989-21H222:10:211
17227991714,2cyclictest3987-21H222:10:211
17227991714,2cyclictest3981-21H222:10:211
17227991714,2cyclictest3606-21tr11:30:131
17227991714,2cyclictest32389-21/usr/sbin/munin09:30:131
17227991714,2cyclictest31161-21/usr/sbin/munin07:35:121
17227991714,2cyclictest28632-21grep11:15:171
17227991714,2cyclictest21781-21hddtemp_smartct09:10:141
17227991714,2cyclictest1621-21http_loadtime08:35:131
17227991714,2cyclictest1060-21thermald08:02:351
17227991713,3cyclictest7865-21ls11:35:201
17227991713,3cyclictest4035-21H222:10:211
1722799170,2cyclictest4035-21H222:10:211
1722799170,2cyclictest3985-21H222:10:211
1722799170,2cyclictest3981-21H222:10:211
1722799170,2cyclictest3976-21H222:10:211
1722799170,2cyclictest2872-21systemd-logind11:12:521
1722799170,1cyclictest0-21swapper/111:04:511
1722799170,1cyclictest0-21swapper/110:12:271
1722799170,16cyclictest4035-21H222:10:211
1722799170,16cyclictest4035-21H222:10:211
1722799170,16cyclictest3991-21H222:10:211
1722799170,16cyclictest3989-21H222:10:211
1722799170,16cyclictest3985-21H222:10:211
1722799170,16cyclictest3053-21systemd-logind12:20:521
1722799170,16cyclictest28462-21apache_volume07:30:121
1722799170,16cyclictest27155-21open_files07:25:191
1722799170,16cyclictest20266-21apache_volume07:15:141
1722799170,16cyclictest19782-21sendmail_mailtr09:05:211
1722799170,16cyclictest15978-21expr09:00:161
1722699174,7cyclictest0-21swapper/008:40:000
17226991715,1cyclictest26630-21kworker/0:008:29:240
17226991715,1cyclictest26592sleep011:28:410
17226991715,1cyclictest0-21swapper/010:10:130
17226991714,2cyclictest547-21expr09:30:130
17226991714,2cyclictest22700-21sshd12:04:100
17226991714,2cyclictest2069-21systemd-udevd09:46:510
17226991714,2cyclictest11575-21latency_hist11:45:000
17226991714,1cyclictest0-21swapper/010:00:120
17226991712,1cyclictest0-21swapper/008:55:180
1722699171,15cyclictest4967-21sed09:35:220
1722699171,15cyclictest3983-21H222:10:210
1722699170,2cyclictest4035-21H222:10:210
1722699170,2cyclictest3989-21H222:10:210
1722699170,2cyclictest3985-21H222:10:210
1722699170,2cyclictest3985-21H222:10:210
1722699170,2cyclictest3983-21H222:10:210
1722699170,2cyclictest2872-21systemd-logind07:26:530
1722699170,2cyclictest22663-21cat11:05:170
1722699170,16cyclictest6251-21threads08:40:220
1722699170,16cyclictest6251-21threads08:40:210
1722699170,16cyclictest4035-21H222:10:210
1722699170,16cyclictest3985-21H222:10:210
1722699170,16cyclictest32510-21awk10:25:180
1722699170,16cyclictest32510-21awk10:25:170
1722699170,16cyclictest27048-21expr09:20:130
1722699170,16cyclictest25081-21cat12:05:200
1722699170,16cyclictest2069-21systemd-udevd08:12:510
1722699170,16cyclictest12121-21sed07:55:230
1722699170,15cyclictest3987-21H222:10:210
1722699170,15cyclictest3983-21H222:10:210
17228991614,1cyclictest28-21ksoftirqd/211:10:142
17228991614,1cyclictest0-21swapper/211:50:092
17228991614,1cyclictest0-21swapper/210:20:002
17228991614,1cyclictest0-21swapper/208:15:172
1722899160,1cyclictest0-21swapper/208:52:302
1722899160,15cyclictest28-21ksoftirqd/211:20:212
1722899160,15cyclictest10380-21awk11:40:182
1722899160,15cyclictest0-21swapper/212:10:112
1722899160,15cyclictest0-21swapper/210:45:202
1722899160,15cyclictest0-21swapper/209:15:112
1722899160,15cyclictest0-21swapper/208:00:132
1722899160,0cyclictest0-21swapper/209:10:252
17227991614,1cyclictest0-21swapper/111:20:141
17227991614,1cyclictest0-21swapper/111:05:181
17227991614,1cyclictest0-21swapper/108:52:491
17227991614,1cyclictest0-21swapper/108:25:121
17227991613,2cyclictest19340-21fschecks_count08:10:151
17227991611,2cyclictest3983-21H222:10:211
1722799160,1cyclictest17716-21/usr/sbin/munin11:55:121
1722799160,15cyclictest0-21swapper/109:20:121
1722799160,15cyclictest0-21swapper/108:40:161
1722799160,15cyclictest0-21swapper/108:40:161
17226991614,1cyclictest0-21swapper/012:35:120
17226991614,1cyclictest0-21swapper/011:20:140
17226991614,1cyclictest0-21swapper/009:55:210
17226991614,1cyclictest0-21swapper/009:00:150
17226991614,1cyclictest0-21swapper/008:45:190
17226991614,1cyclictest0-21swapper/008:20:120
17226991614,1cyclictest0-21swapper/008:05:200
17226991614,1cyclictest0-21swapper/008:00:220
17226991614,1cyclictest0-21swapper/007:45:020
17226991613,2cyclictest5043-21apache_volume12:30:110
1722699160,1cyclictest19476-21expr11:00:150
1722699160,1cyclictest0-21swapper/010:35:110
1722699160,1cyclictest0-21swapper/009:05:020
1722699160,15cyclictest20552-21expr10:05:110
1722699160,15cyclictest0-21swapper/011:20:010
1722699160,15cyclictest0-21swapper/009:50:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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