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2026-04-08 - 08:52
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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 Wed Apr 08, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
278945121060,1sleep10-21swapper/122:56:091
262093821010,1sleep10-21swapper/121:06:061
26697402970,1sleep00-21swapper/021:37:030
26697402970,1sleep00-21swapper/021:37:030
26058602850,3sleep30-21swapper/320:51:093
27314822360,2sleep0171ktimers/022:21:010
25990112340,2sleep30-21swapper/320:46:083
28064372310,2sleep12806404-21ssh23:10:001
2472600992511,7cyclictest0-21swapper/200:20:012
2472594992514,6cyclictest0-21swapper/000:10:010
247260099246,5cyclictest0-21swapper/223:40:012
2472594992415,5cyclictest2930948-21kthreadcore00:31:070
2472600992320,1cyclictest0-21swapper/200:40:002
2472596992320,2cyclictest2897181-21wc00:10:011
2472596992320,2cyclictest1-21systemd23:40:001
247259499237,9cyclictest0-21swapper/023:41:000
2472594992320,2cyclictest2512354-21sh19:40:000
2472594992314,5cyclictest2648831-21/usr/sbin/munin21:26:020
2472594992314,5cyclictest2648831-21/usr/sbin/munin21:26:020
2472594992313,5cyclictest2785231-21head22:56:030
2472600992211,5cyclictest0-21swapper/221:10:012
2472596992212,4cyclictest0-21swapper/100:15:021
2472594992219,2cyclictest2912285-21systemd-run00:20:020
2472594992219,2cyclictest2761094-21sendmail22:40:000
2472594992212,5cyclictest0-21swapper/023:50:020
383433398210,8rtkit-daemon3851704-21mta-sts-daemon20:28:190
2472600992119,1cyclictest0-21swapper/200:30:022
2472600992118,1cyclictest0-21swapper/222:45:012
2472596992118,2cyclictest2519018-21/usr/sbin/munin19:45:011
2472596992118,2cyclictest2479388-21kernelversion19:15:021
2472594992110,6cyclictest0-21swapper/000:10:580
2472600992017,1cyclictest0-21swapper/221:50:012
2472596992017,2cyclictest3841370-21avahi-daemon00:20:011
2472596992017,2cyclictest2563113-21latency_hist20:20:021
2472596992014,2cyclictest2745745-21latency_hist22:30:011
2472596992013,3cyclictest2754150-21/usr/sbin/munin22:36:071
2472596992012,3cyclictest0-21swapper/123:16:081
247259499209,7cyclictest2889422-21cron00:05:000
2472594992017,2cyclictest2562961-21latency_hist20:20:010
2472594992017,2cyclictest1296-21polkitd19:25:020
2472594992013,6cyclictest2825845-21kthreadcore23:21:080
2472600991916,1cyclictest0-21swapper/220:10:012
2472600991912,3cyclictest0-21swapper/221:01:122
247260099190,11cyclictest0-21swapper/223:10:012
2472596991915,3cyclictest2723238-21latency_hist22:15:011
2472596991914,3cyclictest0-21swapper/100:30:011
2472594991916,2cyclictest3827634-1atopacctd19:45:000
2472594991916,2cyclictest2851400-21cron23:40:000
2472594991916,2cyclictest2636770-21tail21:16:060
2472594991916,2cyclictest2569344-21apt-key20:25:000
2472594991916,2cyclictest2537736-21sh20:00:010
2472594991915,3cyclictest3880722-21gmain21:15:010
2472594991913,2cyclictest383433398rtkit-daemon22:07:320
2472594991913,2cyclictest383433398rtkit-daemon21:51:310
2472594991911,4cyclictest2793311-21irqrtprio23:01:060
2472594991911,4cyclictest2793311-21irqrtprio23:01:060
2472600991815,1cyclictest0-21swapper/222:40:002
2472600991815,1cyclictest0-21swapper/220:55:002
2472600991815,1cyclictest0-21swapper/200:00:002
2472600991814,2cyclictest0-21swapper/223:31:112
2472596991815,2cyclictest2668915-21head21:36:111
2472596991815,2cyclictest2668915-21head21:36:111
2472596991815,2cyclictest0-21swapper/123:55:011
2472596991815,2cyclictest0-21swapper/100:35:011
2472596991814,2cyclictest2738478-21sh22:25:021
247259699180,11cyclictest0-21swapper/100:36:021
2472594991815,2cyclictest1290-21dbus-daemon00:30:020
2472594991814,2cyclictest1296-21polkitd20:05:010
2472594991813,4cyclictest2807344-21tr23:11:020
2472594991812,5cyclictest2672808-21kthreadcore21:41:060
2472594991812,5cyclictest2672808-21kthreadcore21:41:060
2649091172,2phc2sys0-21swapper/320:01:053
247260099173,6cyclictest0-21swapper/222:00:012
2472600991715,1cyclictest0-21swapper/223:50:022
2472600991714,1cyclictest0-21swapper/222:26:092
2472600991714,1cyclictest0-21swapper/221:45:002
2472600991714,1cyclictest0-21swapper/221:45:002
2472600991713,2cyclictest0-21swapper/220:56:572
2472596991714,2cyclictest2879149-21kthreadcore23:56:081
2472596991714,2cyclictest2672457-21sed21:41:061
2472596991714,2cyclictest2672457-21sed21:41:061
2472596991714,2cyclictest2613170-21plymouth21:00:001
2472596991714,2cyclictest2499903-21awk19:30:001
2472596991714,2cyclictest1326-21systemd-logind19:10:011
2472596991714,2cyclictest0-21swapper/121:25:011
2472596991710,3cyclictest2487860-21tail19:21:011
247259499179,4cyclictest2816340-21kthreadcore23:16:060
247259499178,2cyclictest0-21swapper/000:21:320
247259499177,5cyclictest0-21swapper/022:41:000
2472594991714,2cyclictest3851698-21mta-sts-daemon22:00:000
2472594991714,2cyclictest2717122-21gltestperf22:11:030
2472594991714,2cyclictest1-21systemd23:56:120
2472594991713,2cyclictest2648490-21latency_hist21:25:020
2472594991713,2cyclictest2525325-21systemd-run19:50:020
2472594991713,2cyclictest0-21swapper/023:35:010
247259499170,6cyclictest2726106-21tr22:16:050
247259499170,4cyclictest2836417-21dump-pmu-power23:30:000
2649091162,3phc2sys0-21swapper/320:35:593
2649091161,2phc2sys0-21swapper/320:16:043
2649091160,2phc2sys0-21swapper/323:09:073
2649091160,2phc2sys0-21swapper/321:28:013
2649091160,2phc2sys0-21swapper/321:28:013
2649091160,2phc2sys0-21swapper/321:15:073
247260099166,7cyclictest0-21swapper/221:30:012
247260099166,7cyclictest0-21swapper/221:30:012
247260099164,9cyclictest0-21swapper/223:30:012
247260099163,1cyclictest0-21swapper/222:52:262
247260099163,1cyclictest0-21swapper/220:32:582
247260099161,7cyclictest0-21swapper/222:10:012
2472600991614,1cyclictest0-21swapper/200:35:022
2472600991614,1cyclictest0-21swapper/200:25:012
2472600991613,1cyclictest0-21swapper/223:01:042
2472600991613,1cyclictest0-21swapper/223:01:042
2472600991613,1cyclictest0-21swapper/221:23:132
2472600991613,1cyclictest0-21swapper/220:36:132
2472600991613,1cyclictest0-21swapper/220:04:302
2472600991613,1cyclictest0-21swapper/219:25:002
247260099161,12cyclictest2814237-21chrt23:15:102
2472596991613,2cyclictest3841370-21avahi-daemon21:35:021
2472596991613,2cyclictest2889483-21latency_hist00:05:011
2472596991613,2cyclictest2859894-21tr23:46:011
2472596991613,2cyclictest2852327-21cpuspeed23:41:011
2472596991613,2cyclictest2730766-21latency_hist22:20:001
2472596991613,2cyclictest2701365-21/usr/sbin/munin22:01:131
2472596991613,2cyclictest1290-21dbus-daemon20:25:001
2472596991612,3cyclictest2484387-21kthreadcore19:16:071
247259699160,3cyclictest0-21swapper/120:41:431
247259499167,4cyclictest0-21swapper/023:10:010
247259499161,4cyclictest491rcuog/221:49:330
2472594991613,2cyclictest2874278-21ssh23:55:000
2472594991613,2cyclictest1296-21polkitd20:40:010
2472594991612,3cyclictest2409961-21kworker/u16:2+nfsiod21:30:180
2472594991611,2cyclictest3851704-21mta-sts-daemon20:56:050
2649091152,2phc2sys0-21swapper/321:41:013
2649091152,2phc2sys0-21swapper/321:41:013
2649091150,3phc2sys0-21swapper/322:52:303
2649091150,2phc2sys0-21swapper/320:31:273
2649091150,1phc2sys0-21swapper/322:43:213
2649091150,1phc2sys0-21swapper/319:50:223
247260099151,5cyclictest0-21swapper/220:00:012
2472600991513,1cyclictest0-21swapper/223:51:032
2472600991513,1cyclictest0-21swapper/223:00:002
2472600991513,1cyclictest0-21swapper/200:11:012
2472600991512,1cyclictest0-21swapper/223:21:422
2472600991512,1cyclictest0-21swapper/220:41:052
2472600991512,1cyclictest0-21swapper/220:26:152
2472600991512,1cyclictest0-21swapper/220:20:002
2472600991512,1cyclictest0-21swapper/219:40:012
2472600991512,1cyclictest0-21swapper/200:01:042
247260099151,11cyclictest2707166-21chrt22:01:392
2472600991511,1cyclictest0-21swapper/221:30:592
2472600991510,2cyclictest0-21swapper/222:31:102
247259699159,5cyclictest3851705-21mta-sts-daemon22:45:251
247259699159,5cyclictest3851704-21mta-sts-daemon23:03:041
247259699159,5cyclictest3851704-21mta-sts-daemon23:03:041
247259699159,4cyclictest2569773-21/usr/sbin/munin20:26:111
247259699159,2cyclictest17350irq/127-ahci[0000:00:17.0]20:35:001
247259699154,8cyclictest2746392-1ssh22:30:161
247259699154,4cyclictest2531770-21acpi19:56:001
2472596991512,2cyclictest2822858-21if_enp1s0.823:21:041
2472596991512,2cyclictest2809519-21tr23:11:071
2472596991512,2cyclictest2777804-21if_enp1s0.822:51:041
2472596991512,2cyclictest2690737-21kthreadcore21:51:061
2472596991512,2cyclictest2650189-21kthreadcore21:26:071
2472596991512,2cyclictest2650189-21kthreadcore21:26:071
2472596991512,2cyclictest2639225-21threads21:16:121
2472596991512,2cyclictest2626919-21fschecks_count21:11:041
2472596991512,2cyclictest2599951-21mailstats20:46:121
2472596991512,2cyclictest2554255-21kthreadcore20:11:081
2472596991512,2cyclictest2472584-21cyclictest23:33:321
2472596991512,2cyclictest1-21systemd19:34:301
2472596991511,3cyclictest3851704-21mta-sts-daemon22:08:171
247259499158,6cyclictest3851703-21mta-sts-daemon20:11:110
247259499158,6cyclictest0-21swapper/020:41:010
247259499157,4cyclictest0-21swapper/022:51:070
247259499153,7cyclictest2494160-21aten2.4-expect19:26:020
247259499151,6cyclictest0-21swapper/022:31:020
2472594991512,2cyclictest2842314-21gmain00:37:310
2472594991512,2cyclictest2619434-21systemd-run21:05:000
2472594991512,2cyclictest1290-21dbus-daemon20:55:010
2472594991512,2cyclictest0-21swapper/020:35:000
2472594991511,3cyclictest2704324-21kthreadcore22:01:080
28361402141,2sleep30-21swapper/323:29:153
2649091141,6phc2sys0-21swapper/300:36:023
2649091140,3phc2sys0-21swapper/322:46:003
2649091140,3phc2sys0-21swapper/300:31:003
2649091140,2phc2sys0-21swapper/323:47:593
2649091140,2phc2sys0-21swapper/322:12:593
247260099144,6cyclictest0-21swapper/219:50:592
247260099141,8cyclictest0-21swapper/223:41:002
2472600991411,1cyclictest0-21swapper/222:22:302
2472600991411,1cyclictest0-21swapper/222:16:062
2472600991411,1cyclictest0-21swapper/222:10:592
2472600991411,1cyclictest0-21swapper/221:20:012
2472600991411,1cyclictest0-21swapper/221:12:112
2472600991411,1cyclictest0-21swapper/219:46:042
2472600991411,1cyclictest0-21swapper/200:09:442
2472600991410,2cyclictest0-21swapper/220:46:062
247259699142,4cyclictest0-21swapper/121:46:001
2472596991411,2cyclictest3851703-21mta-sts-daemon22:41:031
2472596991411,2cyclictest3827634-1atopacctd21:56:061
2472596991411,2cyclictest2913834-21grep00:21:041
2472596991411,2cyclictest2546606-21kthreadcore20:06:071
2472596991411,2cyclictest2538744-21gltestperf20:01:051
247259699141,12cyclictest2525135-21wc19:50:001
2472596991411,2cyclictest0-21swapper/120:40:001
2472596991410,3cyclictest351ktimers/119:40:011
2472596991410,3cyclictest2409961-21kworker/u16:2+nfsiod23:25:241
247259499148,5cyclictest3851875-21systemd-journal19:16:300
247259499148,5cyclictest2472584-21cyclictest20:06:000
247259499148,5cyclictest0-21swapper/022:26:140
247259499144,5cyclictest2531502-21cat19:55:010
2472594991411,2cyclictest2769787-21sort22:46:030
2472594991411,2cyclictest2600173-21timerwakeupswit20:46:140
2649091130,4phc2sys0-21swapper/300:02:363
2649091130,3phc2sys0-21swapper/321:21:363
2649091130,3phc2sys0-21swapper/319:05:023
2649091130,2phc2sys0-21swapper/321:02:053
2649091130,2phc2sys0-21swapper/319:11:313
2649091130,2phc2sys0-21swapper/300:27:333
2649091130,2phc2sys0-21swapper/300:09:163
2649091130,1phc2sys0-21swapper/322:16:083
2649091130,1phc2sys0-21swapper/320:23:533
247260099139,2cyclictest0-21swapper/222:46:112
247260099139,2cyclictest0-21swapper/219:31:062
2472600991311,1cyclictest0-21swapper/219:25:112
2472600991310,1cyclictest0-21swapper/221:36:142
2472600991310,1cyclictest0-21swapper/221:36:142
2472600991310,1cyclictest0-21swapper/220:21:132
2472600991310,1cyclictest0-21swapper/219:45:012
247259699139,3cyclictest2614450-21irqcore21:01:051
247259699135,3cyclictest2526268-21grep19:51:031
2472596991310,2cyclictest3851703-21mta-sts-daemon20:51:081
2472594991311,1cyclictest2622347-21kthreadcore21:06:070
2472594991310,2cyclictest2473891-21irqcore19:11:060
2472594991310,2cyclictest2472584-21cyclictest19:31:090
28582312120,2sleep30-21swapper/323:42:413
2649091120,2phc2sys0-21swapper/323:57:173
2649091120,2phc2sys0-21swapper/323:50:383
2649091120,2phc2sys0-21swapper/323:16:313
2649091120,2phc2sys0-21swapper/323:02:573
2649091120,2phc2sys0-21swapper/323:02:573
2649091120,2phc2sys0-21swapper/322:27:023
247260099124,1cyclictest0-21swapper/219:10:302
2472600991210,1cyclictest0-21swapper/223:11:012
2472600991210,1cyclictest0-21swapper/221:51:022
2472600991210,1cyclictest0-21swapper/220:10:292
2472600991210,1cyclictest0-21swapper/219:20:012
2649091111,2phc2sys0-21swapper/323:33:163
2649091110,3phc2sys0-21swapper/321:30:433
2649091110,2phc2sys0-21swapper/323:12:553
2649091110,2phc2sys0-21swapper/321:55:163
2649091110,2phc2sys0-21swapper/321:36:003
2649091110,2phc2sys0-21swapper/321:36:003
2649091110,1phc2sys0-21swapper/323:22:493
2649091110,1phc2sys0-21swapper/321:13:553
2649091110,1phc2sys0-21swapper/319:38:253
247259499114,2cyclictest2472718-21munin-run19:10:010
2649091101,2phc2sys0-21swapper/323:36:013
2649091101,2phc2sys0-21swapper/322:25:023
2649091100,4phc2sys0-21swapper/319:24:563
2649091100,2phc2sys0-21swapper/322:55:083
2649091100,2phc2sys0-21swapper/322:40:013
2649091100,2phc2sys0-21swapper/322:33:393
2649091100,2phc2sys0-21swapper/322:06:063
2649091100,2phc2sys0-21swapper/322:00:253
2649091100,2phc2sys0-21swapper/321:54:553
2649091100,2phc2sys0-21swapper/319:18:443
2649091100,2phc2sys0-21swapper/300:20:463
2649091100,2phc2sys0-21swapper/300:13:493
2649091100,1phc2sys0-21swapper/300:18:583
264909191,2phc2sys0-21swapper/321:45:023
264909191,2phc2sys0-21swapper/319:50:013
264909191,2phc2sys0-21swapper/319:26:073
264909191,1phc2sys0-21swapper/320:55:243
264909190,2phc2sys0-21swapper/320:06:023
264909190,2phc2sys0-21swapper/319:55:483
264909190,2phc2sys0-21swapper/319:41:013
264909190,2phc2sys0-21swapper/319:30:113
264909190,1phc2sys0-21swapper/320:40:283
24726009996,1cyclictest0-21swapper/219:10:012
264909181,2phc2sys0-21swapper/321:06:023
264909180,2phc2sys0-21swapper/320:25:543
264909180,2phc2sys0-21swapper/320:10:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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