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2026-07-19 - 20:42
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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 Sun Jul 19, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17306992523,2cyclictest0-21swapper/109:32:521
1730599243,1cyclictest0-21swapper/011:26:330
17305992417,6cyclictest19863-21grep08:10:150
1730599235,14cyclictest0-21swapper/010:26:010
1730599232,15cyclictest25539-21cron12:10:010
17305992313,6cyclictest12438-21expr11:45:140
1730599230,21cyclictest8033-21pzem_current11:35:180
1730599230,1cyclictest0-21swapper/010:05:150
1730599222,1cyclictest0-21swapper/007:30:050
17305992216,5cyclictest0-21swapper/009:50:110
17305992214,7cyclictest25584-21expr10:15:120
1730599220,2cyclictest338-21grep09:30:140
1730599220,21cyclictest101702chrt07:52:440
1730599220,21cyclictest0-21swapper/012:30:140
1730599220,21cyclictest0-21swapper/012:15:130
1730599220,21cyclictest0-21swapper/010:20:170
1730599220,21cyclictest0-21swapper/010:20:170
1730599220,21cyclictest0-21swapper/008:05:140
1730599220,21cyclictest0-21swapper/007:55:170
1730599220,1cyclictest0-21swapper/007:25:200
1730599220,16cyclictest3991-21H222:10:210
1730599220,16cyclictest3991-21H222:10:210
1730599220,16cyclictest16454-21latency_hist10:00:000
1730599220,16cyclictest10279-21cat09:45:230
1730599220,16cyclictest0-21swapper/010:48:430
1730599220,15cyclictest0-21swapper/008:15:130
1730799214,16cyclictest3985-21H222:10:212
17306992112,9cyclictest0-21swapper/109:29:481
17305992115,5cyclictest4099-21H222:10:210
17305992115,5cyclictest198522sleep007:14:230
17305992113,7cyclictest23953-21grep09:15:130
17305992113,7cyclictest20317-21sed12:00:000
1730599211,19cyclictest91812chrt10:44:160
1730599210,2cyclictest5425-21grep11:30:210
1730599210,2cyclictest25682-21sort11:10:190
1730599210,20cyclictest3976-21H222:10:210
1730599210,20cyclictest0-21swapper/012:30:010
1730599210,20cyclictest0-21swapper/011:06:420
1730599210,20cyclictest0-21swapper/010:30:140
1730599210,20cyclictest0-21swapper/009:35:150
1730599210,20cyclictest0-21swapper/009:04:300
1730599210,20cyclictest0-21swapper/008:56:560
1730599210,20cyclictest0-21swapper/008:40:200
1730599210,20cyclictest0-21swapper/007:35:140
1730599210,1cyclictest0-21swapper/012:35:140
1730599210,1cyclictest0-21swapper/012:20:010
1730599210,1cyclictest0-21swapper/010:50:160
1730599210,1cyclictest0-21swapper/010:00:160
1730599210,1cyclictest0-21swapper/008:25:150
1730599210,1cyclictest0-21swapper/007:40:020
1730599210,19cyclictest3983-21H222:10:210
1730599210,19cyclictest3981-21H222:10:210
1730599210,16cyclictest3981-21H222:10:210
1730599210,15cyclictest0-21swapper/011:24:120
1730599210,15cyclictest0-21swapper/011:15:130
17307992017,2cyclictest21544-21nfsd407:15:202
17307992017,2cyclictest21544-21nfsd407:15:192
17307992017,2cyclictest19897-21tr08:10:152
1730799200,16cyclictest3989-21H222:10:212
1730699205,15cyclictest31850irq/133-nvme0q210:30:011
17306992017,2cyclictest3991-21H222:10:211
17306992016,3cyclictest3976-21H222:10:211
17305992014,5cyclictest23684-21master07:20:160
17305992014,5cyclictest0-21swapper/012:05:010
17305992014,5cyclictest0-21swapper/011:03:490
1730599200,1cyclictest0-21swapper/009:15:020
1730599200,19cyclictest0-21swapper/012:10:260
1730599200,19cyclictest0-21swapper/011:50:170
1730599200,19cyclictest0-21swapper/010:35:180
1730599200,19cyclictest0-21swapper/008:51:060
1730599200,19cyclictest0-21swapper/008:45:180
1730599200,19cyclictest0-21swapper/008:34:220
1730599200,19cyclictest0-21swapper/008:01:090
1730599200,15cyclictest0-21swapper/009:05:160
1730599200,0cyclictest0-21swapper/009:25:140
1730799192,16cyclictest11928-21smtpd08:55:052
1730799192,11cyclictest1576-21apt-key07:40:002
17307991917,1cyclictest28897-21missed_timers10:20:172
17307991917,1cyclictest28897-21missed_timers10:20:162
17307991917,1cyclictest28-21ksoftirqd/207:23:252
17307991917,1cyclictest0-21swapper/208:16:522
17307991916,2cyclictest32767-21grep09:30:152
17307991916,2cyclictest10422-21idleruntime10:45:162
17307991916,1cyclictest0-21swapper/211:41:062
17307991914,4cyclictest14817-21munin-plugin-st10:55:002
17307991911,7cyclictest870-21systemd-logind11:18:522
1730799190,18cyclictest870-21systemd-logind10:16:522
1730799190,18cyclictest426-21systemd-udevd11:08:522
1730799190,18cyclictest426-21systemd-udevd08:36:522
1730799190,16cyclictest3987-21H222:10:212
1730799190,16cyclictest3987-21H222:10:212
1730699192,1cyclictest0-21swapper/110:18:091
1730699192,1cyclictest0-21swapper/109:15:191
17306991917,1cyclictest21-21ksoftirqd/109:48:501
17306991917,1cyclictest21-21ksoftirqd/108:39:391
17306991917,1cyclictest21-21ksoftirqd/107:43:041
17306991916,2cyclictest31362-21cpuspeed_turbos07:35:131
1730699190,18cyclictest0-21swapper/112:25:351
17305991914,4cyclictest4035-21H222:10:210
1730599190,18cyclictest0-21swapper/011:40:160
17307991817,1cyclictest28-21ksoftirqd/207:28:022
17307991815,2cyclictest4035-21H222:10:212
17307991815,2cyclictest3979-21H222:10:212
17307991815,2cyclictest13483-21nfsd411:45:182
17307991814,3cyclictest4035-21H222:10:212
17307991814,3cyclictest4035-21H222:10:212
17307991813,2cyclictest4035-21H222:10:212
1730799181,16cyclictest3979-21H222:10:212
1730799181,16cyclictest20512-21munin-plugin-st11:05:012
1730799181,16cyclictest15766-21fschecks_count10:55:152
1730799180,2cyclictest3989-21H222:10:212
1730799180,2cyclictest3983-21H222:10:212
1730799180,2cyclictest30033-21nfsd412:15:192
1730799180,17cyclictest3983-21H222:10:212
1730799180,16cyclictest4099-21H222:10:212
1730799180,16cyclictest3985-21H222:10:212
1730799180,16cyclictest3981-21H222:10:212
1730799180,15cyclictest3981-21H222:10:212
17306991816,1cyclictest0-21swapper/111:48:511
17306991814,3cyclictest8967-21check-new-relea08:47:011
17306991814,3cyclictest3987-21H222:10:211
17306991814,3cyclictest3987-21H222:10:211
1730699181,15cyclictest3985-21H222:10:211
1730699180,3cyclictest399-20systemd-journal08:35:011
1730699180,3cyclictest0-21swapper/110:12:321
1730699180,2cyclictest4099-21H222:10:211
1730699180,2cyclictest4099-21H222:10:211
1730699180,2cyclictest3989-21H222:10:211
1730699180,2cyclictest3979-21H222:10:211
1730699180,1cyclictest0-21swapper/111:35:111
1730699180,17cyclictest3991-21H222:10:211
1730699180,17cyclictest1079-21cups-browsed11:25:211
1730699180,16cyclictest3981-21H222:10:211
1730699180,16cyclictest1761-21systemd09:05:131
1730699180,15cyclictest4099-21H222:10:211
17307991714,2cyclictest4792-21fschecks_time08:40:162
17307991714,2cyclictest3991-21H222:10:212
17307991714,2cyclictest3989-21H222:10:212
17307991714,2cyclictest3983-21H222:10:212
17307991714,2cyclictest24419-21cat09:15:152
17307991714,2cyclictest23666-21df_inode12:05:132
17307991714,2cyclictest19139-21cut11:55:202
1730799171,15cyclictest0-21swapper/210:35:152
1730799170,2cyclictest4116-21pzem_current12:25:192
1730799170,2cyclictest3987-21H222:10:212
1730799170,2cyclictest3983-21H222:10:212
1730799170,2cyclictest3983-21H222:10:212
1730799170,16cyclictest843-21systemd-network12:00:012
1730799170,16cyclictest8272-21nvmesmart_nvme008:45:192
1730799170,16cyclictest766-21grep12:20:172
1730799170,16cyclictest3996-21tr11:30:142
1730799170,16cyclictest3991-21H222:10:212
1730799170,16cyclictest3989-21H222:10:212
1730799170,16cyclictest3976-21H222:10:212
1730799170,16cyclictest3433-21cron10:35:002
1730799170,16cyclictest30954-21cat08:30:142
1730799170,16cyclictest3053-21systemd-logind12:10:522
1730799170,16cyclictest30033-21grep09:25:142
1730799170,16cyclictest25690-21latency08:20:172
1730799170,16cyclictest21908-21cut09:10:152
1730799170,16cyclictest21108-21latency_hist09:10:002
17306991716,1cyclictest21-21ksoftirqd/111:06:101
17306991714,2cyclictest3991-21H222:10:211
17306991714,2cyclictest3983-21H222:10:211
17306991714,2cyclictest28525-21/usr/sbin/munin07:30:141
1730699171,1cyclictest14168-21timerandwakeup08:55:221
1730699171,15cyclictest19496-21cpu10:05:121
1730699170,2cyclictest863-21avahi-daemon09:10:191
1730699170,2cyclictest4955-21kernelversion10:35:161
1730699170,2cyclictest4498-21hddtemp_smartct11:30:151
1730699170,2cyclictest3987-21H222:10:211
1730699170,2cyclictest3985-21H222:10:211
1730699170,2cyclictest3983-21H222:10:211
1730699170,2cyclictest3979-21H222:10:211
1730699170,2cyclictest3979-21H222:10:211
1730699170,2cyclictest3976-21H222:10:211
1730699170,2cyclictest3709-21qmgr09:22:491
1730699170,2cyclictest18039-21cat11:55:141
1730699170,2cyclictest13522-21apache_processe08:00:111
1730699170,16cyclictest9647-21chrt08:50:111
1730699170,16cyclictest426-21systemd-udevd12:32:521
1730699170,16cyclictest4099-21H222:10:211
1730699170,16cyclictest4035-21H222:10:211
1730699170,16cyclictest3991-21H222:10:211
1730699170,16cyclictest3989-21H222:10:211
1730699170,16cyclictest3987-21H222:10:211
1730699170,16cyclictest3983-21H222:10:211
1730699170,16cyclictest26121-21cpuspeed_turbos12:10:121
1730699170,16cyclictest2559-21/usr/sbin/munin09:35:161
1730699170,16cyclictest22000-21wc08:15:121
1730699170,16cyclictest19091-21nfsd411:00:171
1730699170,16cyclictest10018-21master12:35:361
17307991614,1cyclictest0-21swapper/210:25:092
17307991613,2cyclictest4035-21H222:10:212
1730799160,15cyclictest0-21swapper/208:50:202
17306991614,1cyclictest15103-21/usr/sbin/munin09:00:211
17306991614,1cyclictest0-21swapper/112:05:121
17306991614,1cyclictest0-21swapper/107:50:151
17306991614,1cyclictest0-21swapper/107:45:151
1730699160,15cyclictest7522-21df10:40:151
1730699160,15cyclictest28012-21grep10:20:141
1730699160,15cyclictest28012-21grep10:20:131
1730699160,15cyclictest0-21swapper/108:05:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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