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2026-09-12 - 16:53
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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 Sat Sep 12, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11003992725,1cyclictest8977-21kworker/0:109:40:160
11013992413,0cyclictest0-21swapper/211:30:172
1101399230,22cyclictest843-21systemd-network08:23:552
1101399230,22cyclictest0-21swapper/211:52:002
11008992312,0cyclictest0-21swapper/111:30:161
11013992112,5cyclictest0-21swapper/208:31:052
11003992113,4cyclictest0-21swapper/010:15:130
1101399203,2cyclictest3976-21H222:10:212
11013992016,3cyclictest0-21swapper/209:15:172
11013992014,5cyclictest0-21swapper/211:08:512
11013992013,3cyclictest25254-21fschecks_count12:20:142
1100899203,1cyclictest0-21swapper/107:23:521
11008992016,3cyclictest0-21swapper/107:15:181
11003992016,3cyclictest0-21swapper/010:55:190
11003992012,4cyclictest0-21swapper/010:28:110
1101399193,1cyclictest0-21swapper/208:09:002
1101399193,15cyclictest0-21swapper/211:45:432
1101399193,15cyclictest0-21swapper/207:24:572
1101399192,16cyclictest4099-21H222:10:212
1101399192,16cyclictest12368-21chrt11:56:112
11013991917,1cyclictest0-21swapper/210:02:272
1101399190,2cyclictest3983-21H222:10:212
1101399190,1cyclictest0-21swapper/209:20:192
1101399190,18cyclictest0-21swapper/208:37:292
1101399190,16cyclictest3989-21H222:10:212
11008991914,3cyclictest3983-21H222:10:211
1100899190,4cyclictest0-21swapper/109:19:081
1100899190,1cyclictest0-21swapper/112:27:061
11003991917,1cyclictest0-21swapper/008:13:560
11003991916,2cyclictest3989-21H222:10:210
11003991912,6cyclictest870-21systemd-logind08:38:510
1100399190,18cyclictest0-21swapper/011:22:180
1100399190,17cyclictest28313-21latency_hist11:30:010
1100399190,16cyclictest4035-21H222:10:210
1100399190,16cyclictest3983-21H222:10:210
1101399182,1cyclictest31250-21cut12:30:182
1101399182,15cyclictest4035-21H222:10:212
1101399182,15cyclictest0-21swapper/211:10:232
11013991816,1cyclictest28-21ksoftirqd/209:58:182
11013991814,3cyclictest14506-21snapd09:38:082
1101399180,3cyclictest3302-21cut08:50:132
1101399180,2cyclictest4099-21H222:10:212
1101399180,2cyclictest3983-21H222:10:212
1101399180,1cyclictest3985-21H222:10:212
1101399180,17cyclictest3983-21H222:10:212
1100899182,15cyclictest0-21swapper/107:26:081
11008991814,3cyclictest6584-21tune2fs10:50:141
11008991814,3cyclictest4035-21H222:10:211
11008991814,3cyclictest3979-21H222:10:211
11008991813,1cyclictest0-21swapper/112:20:141
1100899181,16cyclictest4963-21switchtime08:50:211
1100899180,2cyclictest3981-21H222:10:211
1100899180,17cyclictest3987-21H222:10:211
1100899180,17cyclictest3983-21H222:10:211
1100899180,16cyclictest3983-21H222:10:211
1100899180,16cyclictest31072-21grep09:40:141
1100899180,15cyclictest3981-21H222:10:211
1100899180,15cyclictest3976-21H222:10:211
1100399182,15cyclictest9-21ksoftirqd/012:16:020
11003991816,1cyclictest9-21ksoftirqd/011:49:310
11003991816,1cyclictest9-21ksoftirqd/009:30:570
11003991814,3cyclictest19036-21cut08:20:150
1100399181,2cyclictest17790-21tr11:10:130
1100399181,16cyclictest3707-21master10:24:330
1100399181,16cyclictest3450-21gsd-color08:45:150
1100399181,16cyclictest3450-21gsd-color08:45:140
1100399180,3cyclictest399-20systemd-journal08:10:020
1100399180,17cyclictest4099-21H222:10:210
1100399180,16cyclictest3991-21H222:10:210
1100399180,16cyclictest3983-21H222:10:210
1100399180,16cyclictest0-21swapper/009:29:170
1100399180,15cyclictest3989-21H222:10:210
1100399180,14cyclictest0-21swapper/011:51:570
11013991715,1cyclictest32555-21cpuspeed_turbos10:40:142
11013991715,1cyclictest0-21swapper/210:30:272
11013991715,1cyclictest0-21swapper/207:50:222
11013991714,2cyclictest3988-21H222:10:212
11013991714,2cyclictest3983-21H222:10:212
11013991714,2cyclictest3119-21cpuspeed_turbos10:45:142
11013991714,2cyclictest1375-21munin-node07:40:112
11013991714,1cyclictest0-21swapper/209:50:202
11013991713,3cyclictest4099-21H222:10:212
1101399171,15cyclictest0-21swapper/211:24:122
1101399171,15cyclictest0-21swapper/208:10:082
1101399170,2cyclictest8823-21expr10:55:142
1101399170,2cyclictest4099-21H222:10:212
1101399170,2cyclictest4035-21H222:10:212
1101399170,2cyclictest3991-21H222:10:212
1101399170,2cyclictest3991-21H222:10:212
1101399170,2cyclictest10162-21nvmesmart_nvme009:00:192
1101399170,1cyclictest0-21swapper/210:28:052
1101399170,16cyclictest843-21systemd-network10:18:252
1101399170,16cyclictest5464-21ntpq07:55:182
1101399170,16cyclictest3981-21H222:10:212
1101399170,16cyclictest3981-21H222:10:212
1101399170,16cyclictest3976-21H222:10:212
1101399170,16cyclictest31370-21timerandwakeup10:35:242
1101399170,16cyclictest31267-21cpuspeed_turbos11:35:122
1101399170,16cyclictest23986-21threads07:30:232
1101399170,16cyclictest22895-21expr09:25:132
1101399170,16cyclictest21403-21/usr/sbin/munin10:20:192
1101399170,16cyclictest21195-21kernelversion11:15:182
1101399170,16cyclictest1779-21awk12:35:182
1101399170,16cyclictest14501-21snapd10:50:272
1101399170,16cyclictest1432-21expr08:45:192
1101399170,16cyclictest1432-21expr08:45:182
1101399170,16cyclictest1351-21lxd07:28:432
1101399170,15cyclictest3991-21H222:10:212
11008991714,2cyclictest8265-21fschecks_count11:50:121
11008991714,2cyclictest4035-21H222:10:211
11008991714,2cyclictest399-20systemd-journal12:00:181
11008991714,2cyclictest3989-21H222:10:211
11008991714,2cyclictest3979-21H222:10:211
11008991714,2cyclictest29599-21apt-get10:35:131
11008991714,2cyclictest2563-21munin-run08:50:001
11008991714,2cyclictest2563-21munin-run08:50:001
11008991714,2cyclictest23349-21sed07:30:191
11008991714,2cyclictest20988-21smartctl11:15:171
11008991714,2cyclictest17094-21timerwakeupswit08:15:231
11008991714,2cyclictest14486-21gpgv11:05:021
11008991714,2cyclictest10710-21grep08:05:171
11008991713,3cyclictest4035-21H222:10:211
1100899171,1cyclictest0-21swapper/108:30:151
1100899170,2cyclictest4035-21H222:10:211
1100899170,2cyclictest3991-21H222:10:211
1100899170,2cyclictest3983-21H222:10:211
1100899170,2cyclictest3983-21H222:10:211
1100899170,2cyclictest3981-21H222:10:211
1100899170,2cyclictest12044-21fschecks_count11:00:161
1100899170,16cyclictest9749-21ls09:00:171
1100899170,16cyclictest5933-21wc09:50:221
1100899170,16cyclictest4035-21H222:10:211
1100899170,16cyclictest3983-21H222:10:211
1100899170,16cyclictest3976-21H222:10:211
1100899170,16cyclictest28031-21find09:35:111
1100899170,16cyclictest23838-21grep09:25:161
1100899170,16cyclictest21494-21cat10:20:151
1100899170,16cyclictest21185-21nfsd409:20:181
1100899170,16cyclictest19651-21grep08:20:181
1100899170,16cyclictest14550-21snapd08:00:291
1100899170,16cyclictest12501-21latency09:05:151
1100899170,16cyclictest1035-21thermald11:45:211
1100899170,16cyclictest0-21swapper/110:28:071
1100899170,16cyclictest0-21swapper/108:35:171
11003991714,2cyclictest7635-21grep09:55:150
11003991714,2cyclictest3976-21H222:10:210
11003991714,2cyclictest26388-21ntpq07:35:200
11003991714,2cyclictest1856-21systemd-udevd12:02:520
1100399171,15cyclictest3989-21H222:10:210
1100399171,15cyclictest0-21swapper/011:15:150
1100399170,2cyclictest4099-21H222:10:210
1100399170,2cyclictest4035-21H222:10:210
1100399170,2cyclictest4035-21H222:10:210
1100399170,2cyclictest3991-21H222:10:210
1100399170,2cyclictest3991-21H222:10:210
1100399170,2cyclictest3983-21H222:10:210
1100399170,2cyclictest2872-21systemd-logind08:56:520
1100399170,2cyclictest25327-21tune2fs12:20:150
1100399170,2cyclictest22690-21expr07:30:160
1100399170,2cyclictest16073-21if_err_lxdbr008:15:160
1100399170,1cyclictest0-21swapper/011:00:500
1100399170,16cyclictest5400-21chrt10:48:090
1100399170,16cyclictest4035-21H222:10:210
1100399170,16cyclictest4035-21H222:10:210
1100399170,16cyclictest19552-21sed09:20:010
1100399170,16cyclictest16705-21munin-run09:15:000
1100399170,16cyclictest15154-21sort07:15:180
1100399170,16cyclictest14666-21apache_volume11:05:110
1100399170,16cyclictest1300-21lxd07:46:440
1100399170,16cyclictest0-21swapper/010:06:060
11013991614,1cyclictest19897-21idleruntime12:10:172
11013991614,1cyclictest0-21swapper/209:45:112
1101399160,1cyclictest0-21swapper/209:40:152
1101399160,15cyclictest0-21swapper/211:00:152
11008991614,1cyclictest8998-21expr10:55:141
11008991614,1cyclictest22460-21df_inode12:15:131
11008991614,1cyclictest0-21swapper/109:10:171
11008991613,2cyclictest13976-21/usr/sbin/munin10:05:191
1100899160,2cyclictest4035-21H222:10:211
1100899160,1cyclictest0-21swapper/107:45:161
1100899160,15cyclictest30086-21egrep12:30:151
1100899160,15cyclictest21-21ksoftirqd/108:10:071
1100899160,15cyclictest0-21swapper/111:25:171
1100899160,15cyclictest0-21swapper/111:20:171
1100899160,15cyclictest0-21swapper/109:55:151
11003991614,1cyclictest11724-21expr07:10:180
11003991614,1cyclictest0-21swapper/010:35:150
11003991614,1cyclictest0-21swapper/009:50:180
11003991614,1cyclictest0-21swapper/008:25:190
11003991613,2cyclictest3983-21H222:10:210
1100399161,1cyclictest0-21swapper/010:14:030
1100399160,2cyclictest20582-21smartctl09:20:160
1100399160,2cyclictest19541-21apache_volume07:25:130
1100399160,1cyclictest261532chrt08:30:340
1100399160,15cyclictest4035-21H222:10:210
1100399160,15cyclictest1856-21systemd-udevd09:08:510
1100399160,15cyclictest16964-21expr07:20:140
1100399160,15cyclictest0-21swapper/008:00:140
1100399160,15cyclictest0-21swapper/007:50:120
1100399160,15cyclictest0-21swapper/007:40:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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