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2026-06-20 - 06:26
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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 rackeslot2.osadl.org (updated Sat Jun 20, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4390921020,2sleep043608-21ssh21:35:150
707582970,2sleep20-21swapper/221:55:092
1148972740,1sleep0114895-21ssh22:24:570
2633212460,1sleep20-21swapper/200:05:112
4048531992618,7cyclictest70516-21unin-run21:55:020
4048531992618,7cyclictest70516-21unin-run21:55:020
4048532992520,1cyclictest67250irq/126-eno121:45:041
4048532992313,2cyclictest67250irq/126-eno123:25:231
4048532992313,2cyclictest67250irq/126-eno122:54:391
4048531992312,6cyclictest0-21swapper/021:35:010
404853199227,2cyclictest808-21hwrng22:03:400
404853199225,10cyclictest294948-21cat00:25:150
4048531992214,7cyclictest303118-21kthreadcore00:30:150
3153791222,8phc2sys0-21swapper/319:05:073
4048533992118,1cyclictest0-21swapper/220:00:012
4048532992116,3cyclictest109260-21kthreadcore22:20:141
4048531992118,2cyclictest314230-21munin-plugin-st00:40:010
4048531992118,2cyclictest0-21swapper/019:15:010
4048531992114,6cyclictest660-21dbus-daemon23:45:010
3153791210,2phc2sys0-21swapper/320:20:133
404853299209,3cyclictest0-21swapper/100:30:541
4048532992018,1cyclictest0-21swapper/100:05:031
4048532992017,2cyclictest270435-21latency_hist00:10:031
4048532992017,2cyclictest0-21swapper/121:50:021
4048532992017,2cyclictest0-21swapper/121:50:021
4048532992016,3cyclictest231265-21unixbench_multi23:40:211
404853199209,9cyclictest0-21swapper/023:30:070
404853199209,6cyclictest0-21swapper/021:15:100
404853199205,9cyclictest116675-21cut22:25:150
4048533991917,1cyclictest0-21swapper/223:00:032
4048533991916,1cyclictest0-21swapper/200:05:022
4048532991916,2cyclictest4054875-21apt-key19:15:011
4048532991916,2cyclictest188463-21/usr/sbin/munin23:15:021
4048532991916,2cyclictest100142-21apt-key22:15:011
4048532991914,3cyclictest43798-21kthreadcore21:35:161
4048532991914,3cyclictest1246-21mta-sts-daemon00:25:021
4048532991914,3cyclictest100478-21/usr/sbin/munin22:15:161
404853199195,8cyclictest76833-21sh21:57:340
404853199193,11cyclictest247972-21aten2.4-expect23:55:090
4048531991916,2cyclictest92525-21apt-key22:10:010
4048531991916,2cyclictest263743-21sed00:05:130
4048531991916,2cyclictest1-21systemd23:30:030
4048531991914,4cyclictest192732-21kthreadcore23:15:140
4048531991910,8cyclictest765-1atopacctd20:55:090
4048533991815,1cyclictest0-21swapper/200:30:092
404853299189,2cyclictest67250irq/126-eno119:50:331
404853299187,3cyclictest0-21swapper/123:51:421
4048532991815,2cyclictest4142763-21cron20:25:011
4048532991815,2cyclictest4070981-21kthreadcore19:25:151
4048532991815,2cyclictest299637-21munin-run00:30:011
4048532991815,2cyclictest21545-21kthreadcore21:20:141
4048532991815,2cyclictest16472-21cat21:15:201
4048532991815,2cyclictest0-21swapper/121:25:161
4048532991812,2cyclictest67250irq/126-eno100:10:091
404853199189,7cyclictest0-21swapper/021:40:080
404853199185,8cyclictest171ktimers/023:37:310
4048531991815,2cyclictest4106038-21systemd19:55:010
4048531991815,2cyclictest145371-21gltestperf22:45:120
4048531991815,2cyclictest1246-21mta-sts-daemon19:45:150
4048531991815,2cyclictest123199-21uniq22:30:100
4048531991815,2cyclictest1-21systemd23:00:010
4048531991814,3cyclictest4088290-21cpuspeed_turbos19:40:100
4048531991814,1cyclictest191rcu_preempt23:47:160
4048531991811,6cyclictest93301-21cstates22:10:100
4048531991811,6cyclictest765-1atopacctd19:55:360
3153791180,2phc2sys0-21swapper/320:10:193
162192180,2sleep30-21swapper/321:15:183
4048533991715,1cyclictest0-21swapper/223:20:022
4048533991715,1cyclictest0-21swapper/221:35:022
4048533991715,1cyclictest0-21swapper/220:25:022
4048533991714,1cyclictest0-21swapper/223:55:002
4048533991714,1cyclictest0-21swapper/223:27:512
4048533991714,1cyclictest0-21swapper/200:35:152
4048533991712,2cyclictest0-21swapper/222:21:252
4048532991714,2cyclictest92325-21wc22:10:001
4048532991714,2cyclictest728-21wpa_supplicant20:04:151
4048532991714,2cyclictest203462-21systemd-run23:25:031
4048532991714,2cyclictest129566-21cron22:35:001
4048532991714,2cyclictest1242-21mta-sts-daemon23:08:301
4048532991714,2cyclictest0-21swapper/100:20:021
4048532991713,3cyclictest4188679-21kthreadcore21:00:171
4048532991712,4cyclictest4084679-21kthreadcore19:35:141
4048532991712,3cyclictest0-21swapper/121:00:001
404853199176,3cyclictest257970-21kthreadcore00:00:150
404853199175,6cyclictest132400-21grep22:35:140
404853199174,6cyclictest4159708-21kthreadcore20:35:160
404853199173,9cyclictest4063696-21aten2.4-expect19:20:090
4048531991714,2cyclictest4167230-21latency_hist20:45:010
4048531991714,2cyclictest181797-21cut23:10:100
4048531991714,2cyclictest1246-21mta-sts-daemon20:20:160
4048531991713,3cyclictest4176273-21kthreadcore20:50:150
4048531991712,4cyclictest197364-21tr23:20:140
4048531991711,2cyclictest67250irq/126-eno121:20:150
404853199170,8cyclictest4087688-21sendmail19:40:010
404853199170,5cyclictest31802-21ssh21:26:280
404853199170,5cyclictest246657-21ssh23:52:050
404853199170,5cyclictest172975-21ssh23:02:590
31537911710,2phc2sys0-21swapper/321:40:153
3153791170,2phc2sys0-21swapper/322:57:073
3153791170,2phc2sys0-21swapper/320:00:013
404853399161,4cyclictest0-21swapper/223:10:012
4048533991614,1cyclictest0-21swapper/223:15:032
4048533991614,1cyclictest0-21swapper/222:05:022
4048533991614,1cyclictest0-21swapper/221:55:022
4048533991614,1cyclictest0-21swapper/221:55:022
4048533991614,1cyclictest0-21swapper/221:50:012
4048533991614,1cyclictest0-21swapper/221:50:012
4048533991613,1cyclictest0-21swapper/223:59:332
4048533991613,1cyclictest0-21swapper/219:30:192
4048533991613,1cyclictest0-21swapper/200:25:392
4048533991613,1cyclictest0-21swapper/200:23:532
4048533991613,1cyclictest0-21swapper/200:20:012
4048533991612,2cyclictest0-21swapper/221:24:532
404853299165,9cyclictest133949-21tr22:35:151
404853299161,4cyclictest1242-21mta-sts-daemon21:33:401
4048532991613,2cyclictest219326-21if_enp1s023:35:121
4048532991613,2cyclictest145473-21if_enp1s0.822:45:131
4048532991613,2cyclictest137251-21acpi22:40:061
4048532991613,2cyclictest1247-21mta-sts-daemon23:00:151
4048532991613,2cyclictest1242-21mta-sts-daemon23:45:581
4048532991613,2cyclictest115977-21tr22:25:121
4048532991612,3cyclictest4147359-21kthreadcore20:25:161
4048532991612,3cyclictest3986447-21gdbus20:11:351
4048532991611,3cyclictest4149254-21tail20:30:091
4048532991611,3cyclictest4149254-21tail20:30:091
404853199167,5cyclictest289972-21latency00:20:170
404853199165,7cyclictest270803-21cpuspeed_turbos00:10:100
404853199163,5cyclictest4130292-21kworker/0:1-events20:15:140
4048531991613,2cyclictest4128663-21kthreadcore20:10:160
4048531991613,2cyclictest4118215-21apt-key20:05:010
4048531991613,2cyclictest4070981-21kthreadcore19:25:150
4048531991613,2cyclictest175283-21kthreadcore23:05:140
4048531991613,2cyclictest144288-21cut22:45:010
4048531991613,2cyclictest1242-21mta-sts-daemon19:15:210
4048531991612,3cyclictest4193276-21kthreadcore21:05:160
4048531991612,3cyclictest4144402-21kthreadcore20:25:150
404853199160,6cyclictest11222-21systemd-run21:15:020
404853199160,5cyclictest105073-21cut22:15:150
3153791161,4phc2sys0-21swapper/319:45:073
3153791160,3phc2sys0-21swapper/321:23:113
404853399157,5cyclictest41613222sleep220:40:082
404853399151,6cyclictest0-21swapper/220:50:012
4048533991513,1cyclictest0-21swapper/220:26:182
4048533991512,1cyclictest0-21swapper/223:40:162
4048533991512,1cyclictest0-21swapper/222:50:192
4048533991512,1cyclictest0-21swapper/222:35:012
4048533991512,1cyclictest0-21swapper/222:15:002
4048533991512,1cyclictest0-21swapper/220:35:002
4048533991512,1cyclictest0-21swapper/220:35:002
4048533991512,1cyclictest0-21swapper/200:11:382
4048533991511,2cyclictest0-21swapper/222:26:072
4048533991511,2cyclictest0-21swapper/221:19:422
404853299159,5cyclictest1242-21mta-sts-daemon21:56:401
4048532991513,1cyclictest4048529-21cyclictest19:45:151
4048532991512,2cyclictest70312-21latency_hist21:55:021
4048532991512,2cyclictest70312-21latency_hist21:55:021
4048532991512,2cyclictest660-21dbus-daemon20:40:001
4048532991512,2cyclictest4107154-21tr19:55:131
4048532991512,2cyclictest4069398-21latency_hist19:25:011
4048532991511,3cyclictest4078264-21kthreadcore19:30:151
4048532991511,3cyclictest314200-21latency_hist00:40:021
4048532991511,3cyclictest212945-21kthreadcore23:30:141
4048532991511,3cyclictest1247-21mta-sts-daemon21:05:241
4048532991510,3cyclictest693-21systemd-logind22:05:011
404853199156,7cyclictest4120506-21tr20:05:150
404853199155,6cyclictest154757-21kthreadcore22:50:150
4048531991512,2cyclictest56813-21irqcore21:45:130
4048531991512,2cyclictest56813-21irqcore21:45:130
4048531991512,2cyclictest4154944-21munin-plugin-st20:35:010
4048531991512,2cyclictest4154944-21munin-plugin-st20:35:010
4048531991511,3cyclictest4188679-21kthreadcore21:00:160
4048531991511,3cyclictest4170214-21kthreadcore20:45:160
404853199150,5cyclictest277909-21ssh00:15:080
3153791151,4phc2sys0-21swapper/300:05:093
3153791151,3phc2sys0-21swapper/322:30:063
3153791151,2phc2sys0-21swapper/319:14:013
3153791150,3phc2sys0-21swapper/323:09:103
3153791150,3phc2sys0-21swapper/321:59:223
3153791150,3phc2sys0-21swapper/300:16:063
3153791150,2phc2sys0-21swapper/323:51:073
3153791150,2phc2sys0-21swapper/322:45:093
404853399141,6cyclictest0-21swapper/220:10:012
4048533991412,1cyclictest0-21swapper/222:07:162
4048533991412,1cyclictest0-21swapper/219:50:022
4048533991411,1cyclictest0-21swapper/222:40:092
4048533991411,1cyclictest0-21swapper/222:20:022
4048533991411,1cyclictest0-21swapper/221:40:202
4048533991411,1cyclictest0-21swapper/220:50:092
4048533991410,2cyclictest0-21swapper/222:36:072
4048533991410,2cyclictest0-21swapper/221:10:092
4048533991410,2cyclictest0-21swapper/220:00:142
404853299149,3cyclictest0-21swapper/121:10:121
404853299148,5cyclictest4054844-21munin-node20:08:391
4048532991411,2cyclictest4174796-21kthreadcore20:50:131
4048532991411,2cyclictest4133695-21kthreadcore20:15:171
4048532991411,2cyclictest249058-21sed23:55:141
4048532991411,2cyclictest189391-21sh23:15:081
4048532991411,2cyclictest163105-21kthreadcore22:55:161
4048532991410,3cyclictest4061330-21kthreadcore19:15:161
4048532991410,2cyclictest0-21swapper/120:50:021
404853199149,1cyclictest67250irq/126-eno119:30:090
3153791141,5phc2sys0-21swapper/323:20:083
3153791141,3phc2sys0-21swapper/322:50:063
3153791140,3phc2sys0-21swapper/320:50:073
3153791140,2phc2sys0-21swapper/321:26:463
3153791140,2phc2sys0-21swapper/300:35:033
3153791140,1phc2sys0-21swapper/320:05:263
43722130,6sleep30-21swapper/321:10:103
404853399139,2cyclictest0-21swapper/220:10:202
404853399131,7cyclictest0-21swapper/221:10:012
4048533991311,1cyclictest0-21swapper/223:45:082
4048533991311,1cyclictest0-21swapper/223:03:492
4048533991311,1cyclictest0-21swapper/219:45:022
4048533991311,1cyclictest0-21swapper/219:40:012
4048533991311,1cyclictest0-21swapper/219:25:022
4048533991310,1cyclictest0-21swapper/223:35:112
4048533991310,1cyclictest0-21swapper/223:30:112
4048533991310,1cyclictest0-21swapper/222:49:202
4048533991310,1cyclictest0-21swapper/221:00:122
4048533991310,1cyclictest0-21swapper/219:17:332
404853399130,1cyclictest0-21swapper/221:25:062
404853299139,3cyclictest4090505-21kthreadcore19:40:151
4048532991310,2cyclictest4161877-21sh20:40:101
3153791131,5phc2sys0-21swapper/320:35:083
3153791130,5phc2sys0-21swapper/322:17:083
3153791130,2phc2sys0-21swapper/322:24:293
3153791130,2phc2sys0-21swapper/321:35:073
3153791130,2phc2sys0-21swapper/300:23:253
404853399129,1cyclictest0-21swapper/223:20:152
404853399129,1cyclictest0-21swapper/219:55:032
404853399121,4cyclictest0-21swapper/220:35:082
4048533991210,1cyclictest0-21swapper/219:25:152
4048533991210,1cyclictest0-21swapper/219:10:112
4048533991210,1cyclictest0-21swapper/219:10:022
404853299128,3cyclictest738-21gdbus19:10:011
404853199121,2cyclictest2585078-1atop19:10:010
3153791124,3phc2sys0-21swapper/322:35:063
3153791122,4phc2sys0-21swapper/322:00:073
3153791122,3phc2sys0-21swapper/300:00:123
3153791122,2phc2sys0-21swapper/323:28:303
3153791122,2phc2sys0-21swapper/319:30:203
3153791120,2phc2sys0-21swapper/322:14:593
3153791120,2phc2sys0-21swapper/319:28:563
3153791120,1phc2sys0-21swapper/323:34:453
3153791120,1phc2sys0-21swapper/319:50:363
404853399119,1cyclictest0-21swapper/221:36:012
404853399111,2cyclictest0-21swapper/221:00:012
3153791112,2phc2sys0-21swapper/323:47:503
3153791112,1phc2sys0-21swapper/320:32:363
3153791112,1phc2sys0-21swapper/320:32:363
3153791111,2phc2sys0-21swapper/323:10:153
3153791111,2phc2sys0-21swapper/300:29:223
3153791110,5phc2sys0-21swapper/321:53:363
3153791110,5phc2sys0-21swapper/321:53:363
3153791110,3phc2sys0-21swapper/323:35:083
3153791110,2phc2sys0-21swapper/323:00:083
3153791110,2phc2sys0-21swapper/322:40:083
3153791110,2phc2sys0-21swapper/321:46:583
3153791110,2phc2sys0-21swapper/321:46:583
3153791110,2phc2sys0-21swapper/321:06:093
3153791110,2phc2sys0-21swapper/320:15:083
3153791110,1phc2sys0-21swapper/323:44:413
3153791110,1phc2sys0-21swapper/320:03:343
3153791110,1phc2sys0-21swapper/319:19:223
404853399108,1cyclictest0-21swapper/220:15:102
3153791101,2phc2sys0-21swapper/322:25:093
3153791100,4phc2sys0-21swapper/322:05:083
3153791100,3phc2sys0-21swapper/321:30:073
3153791100,2phc2sys0-21swapper/323:56:363
3153791100,2phc2sys0-21swapper/321:05:023
3153791100,2phc2sys0-21swapper/319:35:333
3153791100,2phc2sys0-21swapper/300:31:103
3153791100,1phc2sys0-21swapper/320:25:513
315379190,2phc2sys0-21swapper/323:15:083
315379190,2phc2sys0-21swapper/320:45:223
315379190,2phc2sys0-21swapper/320:40:213
315379190,2phc2sys0-21swapper/319:41:183
315379190,2phc2sys0-21swapper/319:20:303
315379190,2phc2sys0-21swapper/300:10:263
315379180,2phc2sys0-21swapper/320:55:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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