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2026-03-12 - 04:06
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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 all highest latencies:
System rackeslot2.osadl.org (updated Thu Mar 12, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40797322940,1sleep10-21swapper/122:04:411
40949162890,1sleep10-21swapper/122:11:461
38433402880,2sleep30-21swapper/319:15:033
40221452470,2sleep30-21swapper/321:31:443
235732320,1sleep123575-21tr23:21:441
40880052310,1sleep10-21swapper/122:08:541
3835245992720,6cyclictest2270784-1atop00:00:010
3835245992314,5cyclictest67005-21kthreadcore23:46:450
3835245992314,5cyclictest58144-21kthreadcore23:41:440
3835245992314,5cyclictest4188371-21if_err_enp1s0.823:06:410
3835245992312,6cyclictest0-21swapper/022:35:020
3835246992216,2cyclictest134050irq/121-eno122:16:391
3835245992215,6cyclictest4144066-21sed22:41:430
3835245992215,6cyclictest0-21swapper/000:40:010
3835245992213,5cyclictest1288-1atopacctd00:05:020
3835246992118,2cyclictest91813-21grep00:01:411
2902298210,2rtkit-daemon29021-21rtkit-daemon20:48:341
3835247992017,1cyclictest0-21swapper/221:30:002
3835246992015,1cyclictest134050irq/121-eno122:35:011
3835246992011,4cyclictest0-21swapper/100:00:011
383524599208,6cyclictest31773-21kthreadcore23:26:440
3835245992012,4cyclictest73101-21aten2.4-expect23:51:380
3835245992010,6cyclictest0-21swapper/000:21:420
383524799191,7cyclictest0-21swapper/222:50:012
383524799191,7cyclictest0-21swapper/222:50:012
3835247991916,1cyclictest0-21swapper/221:40:002
3835246991916,2cyclictest4153339-21cut22:46:431
3835246991916,2cyclictest4153339-21cut22:46:431
3835246991916,2cyclictest3946208-21sendmail20:40:001
3835246991911,2cyclictest3835243-21cyclictest23:32:551
383524599198,6cyclictest0-21swapper/021:51:390
383524599198,2cyclictest3879272-21timerwakeupswit19:41:480
3835245991916,2cyclictest3946280-21systemd-run20:40:000
3835245991915,2cyclictest3970794-21systemd21:00:020
3835245991911,6cyclictest0-21swapper/021:45:000
3835245991911,5cyclictest41082-21tr23:31:440
3835245991911,4cyclictest145960-21kthreadcore00:31:430
3835245991910,5cyclictest4174598-21missed_timers22:56:440
3835247991815,1cyclictest0-21swapper/222:40:022
3835247991815,1cyclictest0-21swapper/220:15:002
3835246991815,2cyclictest1290-21dbus-daemon19:20:011
3835246991812,2cyclictest134050irq/121-eno121:55:021
383524599188,6cyclictest0-21swapper/021:11:360
383524599188,2cyclictest4000411-21turbostat21:20:000
3835245991815,2cyclictest3958263-21dump-pmu-power20:50:000
3835245991815,2cyclictest3885971-21systemd-run19:50:010
3835245991814,2cyclictest0-21swapper/021:10:010
2649091182,2phc2sys0-21swapper/322:35:233
2649091180,3phc2sys0-21swapper/321:54:533
2649091180,2phc2sys0-21swapper/320:56:393
3835247991715,1cyclictest0-21swapper/222:00:022
3835247991715,1cyclictest0-21swapper/200:20:022
3835247991714,1cyclictest0-21swapper/220:05:002
3835247991714,1cyclictest0-21swapper/200:35:002
3835246991715,1cyclictest1296-21polkitd00:40:011
3835246991714,2cyclictest4018158-21latency_hist21:30:011
3835246991714,2cyclictest3982748-21systemd-run21:10:011
3835246991714,2cyclictest1288-1atopacctd19:31:441
3835246991713,3cyclictest1327-21in:imuxsock19:40:011
383524599178,4cyclictest0-21swapper/000:16:490
383524599177,5cyclictest0-21swapper/022:06:430
383524599172,5cyclictest0-21swapper/022:53:120
3835245991714,2cyclictest4071259-21cut22:00:020
3835245991714,2cyclictest3841395-21irqcore19:15:010
3835245991714,2cyclictest3835243-21cyclictest21:35:010
3835245991711,5cyclictest4135933-21kthreadcore22:36:430
2649091170,2phc2sys0-21swapper/322:21:553
2649091170,1phc2sys0-21swapper/300:34:333
39148882160,1sleep00-21swapper/020:11:460
3835247991614,1cyclictest0-21swapper/223:05:012
3835247991613,1cyclictest0-21swapper/223:25:012
3835247991613,1cyclictest0-21swapper/223:10:112
3835247991613,1cyclictest0-21swapper/222:31:442
3835247991613,1cyclictest0-21swapper/222:25:112
3835247991613,1cyclictest0-21swapper/221:51:402
3835247991613,1cyclictest0-21swapper/220:00:002
3835247991613,1cyclictest0-21swapper/219:45:002
383524799160,6cyclictest0-21swapper/219:50:012
383524699162,12cyclictest3976648-21latency_hist21:05:001
3835246991614,1cyclictest3929777-21kthreadcore20:26:431
3835246991614,1cyclictest3835243-21cyclictest21:16:441
3835246991613,2cyclictest62967-21systemd-run23:45:011
3835246991613,2cyclictest3970414-21systemd-run21:00:011
3835246991613,2cyclictest3897811-21cron20:00:001
3835246991613,2cyclictest140157-21timerwakeupswit00:26:531
3835246991612,3cyclictest3891261-21switchtime19:51:491
3835246991612,3cyclictest3891261-21switchtime19:51:491
383524599169,6cyclictest4179537-21idleruntime23:01:410
383524599168,4cyclictest0-21swapper/000:06:380
383524599167,7cyclictest4074723-21tr22:01:440
3835245991613,2cyclictest4120226-21kthreadcore22:26:450
3835245991613,2cyclictest4053236-21latency_hist21:50:000
3835245991613,2cyclictest3872478-21kthreadcore19:36:430
3835245991613,2cyclictest3862735-21gltestperf19:31:400
3835245991613,2cyclictest3835243-21cyclictest20:10:010
3835245991613,2cyclictest27660-21latency_hist23:25:020
3835245991613,2cyclictest257-21systemd-journal20:00:000
3835245991613,2cyclictest1290-21dbus-daemon21:30:000
3835245991613,2cyclictest11967-21grep23:16:420
3835245991612,3cyclictest4080111-21kworker/u16:2+nfsiod23:10:340
3835245991612,2cyclictest0-21swapper/022:25:010
383524599161,10cyclictest0-21swapper/020:27:440
2649091161,1phc2sys0-21swapper/322:12:103
2649091160,3phc2sys0-21swapper/322:52:493
2649091160,2phc2sys0-21swapper/321:38:403
2649091160,1phc2sys0-21swapper/322:04:323
383524799151,8cyclictest0-21swapper/220:50:012
383524799151,8cyclictest0-21swapper/219:30:012
3835247991513,1cyclictest0-21swapper/222:05:002
3835247991513,1cyclictest0-21swapper/221:46:452
3835247991512,1cyclictest0-21swapper/223:46:392
3835247991512,1cyclictest0-21swapper/223:32:112
3835247991512,1cyclictest0-21swapper/222:06:402
3835247991512,1cyclictest0-21swapper/219:36:422
3835247991512,1cyclictest0-21swapper/219:15:012
3835247991512,1cyclictest0-21swapper/200:30:012
3835247991512,1cyclictest0-21swapper/200:15:002
3835247991511,2cyclictest0-21swapper/219:55:012
3835247991511,2cyclictest0-21swapper/219:55:012
383524699159,2cyclictest4165416-21kthreadcore22:51:451
383524699158,5cyclictest134050irq/121-eno123:04:361
383524699157,3cyclictest0-21swapper/122:56:421
3835246991513,1cyclictest4124152-21/usr/sbin/munin22:30:011
3835246991512,2cyclictest69235-21ptp4l-jitter23:46:491
3835246991512,2cyclictest4150670-21apt-key22:45:001
3835246991512,2cyclictest4050576-21needreboot21:46:461
3835246991512,2cyclictest4004168-21kthreadcore21:21:441
3835246991512,2cyclictest3835243-21cyclictest23:51:451
3835246991512,2cyclictest257-21systemd-journal19:15:011
3835246991512,2cyclictest144158-21cstates00:31:381
3835246991512,2cyclictest134050irq/121-eno123:27:161
3835246991512,2cyclictest1288-1atopacctd00:16:481
383524699151,1cyclictest191rcu_preempt21:10:041
3835246991511,3cyclictest54282-21kworker/u16:2+nfsiod00:22:551
3835246991511,3cyclictest49443-21kthreadcore23:36:451
3835246991511,3cyclictest4150895-21kworker/u16:0+nfsiod00:07:211
3835246991511,3cyclictest3104-21gltestperf23:11:401
3835246991511,3cyclictest110002-21kthreadcore00:11:431
383524699151,12cyclictest3946637-21apt-get20:41:361
383524699150,4cyclictest0-21swapper/123:19:311
383524599159,5cyclictest0-21swapper/022:15:000
383524599158,3cyclictest4150895-21kworker/u16:0-nfsiod00:26:200
383524599157,2cyclictest0-21swapper/021:21:430
3835245991512,2cyclictest3971695-21gltestperf21:01:400
3835245991512,2cyclictest1296-21polkitd20:45:000
3835245991511,3cyclictest4150895-21kworker/u16:0+nfsiod23:37:040
3835245991511,3cyclictest4080111-21kworker/u16:2+nfsiod22:48:150
3835245991511,3cyclictest4080111-21kworker/u16:2+nfsiod22:48:150
2649091150,3phc2sys0-21swapper/322:09:563
2649091150,2phc2sys0-21swapper/323:18:473
383524799141,7cyclictest0-21swapper/223:30:012
3835247991412,1cyclictest0-21swapper/221:20:002
3835247991412,1cyclictest0-21swapper/221:15:022
3835247991411,1cyclictest0-21swapper/223:51:512
3835247991411,1cyclictest0-21swapper/223:45:022
3835247991411,1cyclictest0-21swapper/223:36:442
3835247991411,1cyclictest0-21swapper/223:16:452
3835247991411,1cyclictest0-21swapper/223:00:022
3835247991411,1cyclictest0-21swapper/222:55:002
3835247991411,1cyclictest0-21swapper/221:05:002
3835247991411,1cyclictest0-21swapper/220:55:012
3835247991411,1cyclictest0-21swapper/220:40:002
3835247991411,1cyclictest0-21swapper/220:25:002
3835247991411,1cyclictest0-21swapper/219:24:422
3835247991411,1cyclictest0-21swapper/200:36:512
383524799140,7cyclictest0-21swapper/223:10:012
3835246991411,2cyclictest4068477-21head21:56:491
3835246991411,2cyclictest3940229-21cut20:35:001
3835246991411,2cyclictest3923133-21gltestperf20:21:411
3835246991411,2cyclictest3850024-21aten_repower_en19:21:361
3835246991411,2cyclictest29021-21rtkit-daemon20:51:341
3835246991411,2cyclictest2023-21sshd20:06:441
3835246991411,2cyclictest1329-21rs:main1
3835246991410,3cyclictest4150895-21kworker/u16:0+nfsiod23:06:511
3835246991410,3cyclictest4032188-21kthreadcore21:36:441
3835246991410,3cyclictest3983105-21kworker/u16:1+nfsiod21:42:181
3835246991410,3cyclictest3983105-21kworker/u16:1+nfsiod21:30:331
3835246991410,3cyclictest3914496-21kthreadcore20:11:461
3835246991410,3cyclictest3883333-21kthreadcore19:46:461
3835246991410,3cyclictest3876089-21kthreadcore19:41:421
383524599149,1cyclictest3769124-21kworker/u16:2-events_unbound20:16:400
383524599148,5cyclictest0-21swapper/000:11:500
383524599145,5cyclictest0-21swapper/022:19:020
383524599144,6cyclictest0-21swapper/020:50:440
3835245991411,2cyclictest3901060-21kthreadcore20:01:460
3835245991411,2cyclictest3855656-21latency_hist19:25:010
3835245991411,2cyclictest3842547-21kthreadcore19:15:020
3835245991411,2cyclictest3835243-21cyclictest19:50:370
3835245991411,2cyclictest3835243-21cyclictest19:50:370
3835245991410,3cyclictest4031944-21kthreadcore21:36:440
3835245991410,3cyclictest3857303-21kthreadcore19:26:440
2649091144,2phc2sys0-21swapper/323:45:003
2649091141,4phc2sys0-21swapper/300:21:353
2649091140,2phc2sys0-21swapper/323:12:543
383524799139,2cyclictest0-21swapper/221:31:452
3835247991310,1cyclictest0-21swapper/222:41:502
3835247991310,1cyclictest0-21swapper/222:21:482
3835247991310,1cyclictest0-21swapper/222:16:372
3835247991310,1cyclictest0-21swapper/222:11:162
3835247991310,1cyclictest0-21swapper/221:21:382
3835247991310,1cyclictest0-21swapper/221:06:392
3835247991310,1cyclictest0-21swapper/220:26:412
3835247991310,1cyclictest0-21swapper/220:16:502
3835247991310,1cyclictest0-21swapper/220:06:372
3835247991310,1cyclictest0-21swapper/219:31:422
3835247991310,1cyclictest0-21swapper/200:05:212
3835247991310,1cyclictest0-21swapper/200:01:422
383524799130,7cyclictest0-21swapper/221:45:002
3835246991310,2cyclictest4107806-21aten2.4-expect22:21:381
3835246991310,2cyclictest3917036-21fschecks_time20:16:431
3835246991310,2cyclictest2018-21lldpd22:36:011
3835246991310,2cyclictest1288-1atopacctd19:26:451
383524599139,3cyclictest1313-21gmain19:10:000
383524599136,5cyclictest257-21systemd-journal20:30:440
3835245991310,2cyclictest3924926-21kthreadcore20:21:440
2649091132,2phc2sys0-21swapper/323:45:443
2649091130,2phc2sys0-21swapper/323:25:043
2649091130,2phc2sys0-21swapper/321:27:493
2649091130,1phc2sys0-21swapper/319:09:393
383524799129,1cyclictest0-21swapper/223:56:532
383524799129,1cyclictest0-21swapper/220:41:412
383524799129,1cyclictest0-21swapper/220:31:362
383524799128,2cyclictest0-21swapper/220:56:432
3835247991210,1cyclictest0-21swapper/219:15:022
3835247991210,1cyclictest0-21swapper/200:21:412
383524699125,5cyclictest1290-21dbus-daemon19:10:011
2649091122,2phc2sys0-21swapper/320:45:013
2649091122,2phc2sys0-21swapper/300:01:353
2649091121,4phc2sys0-21swapper/323:01:373
2649091121,4phc2sys0-21swapper/300:36:373
2649091120,2phc2sys0-21swapper/323:24:003
2649091120,2phc2sys0-21swapper/321:18:383
2649091120,2phc2sys0-21swapper/319:46:423
2649091120,2phc2sys0-21swapper/319:40:253
2649091120,1phc2sys0-21swapper/322:18:223
2649091120,1phc2sys0-21swapper/321:45:563
2649091120,1phc2sys0-21swapper/300:17:463
2649091115,2phc2sys0-21swapper/319:40:023
2649091112,2phc2sys0-21swapper/321:55:423
2649091110,3phc2sys0-21swapper/321:01:363
2649091110,2phc2sys0-21swapper/323:51:373
2649091110,2phc2sys0-21swapper/319:11:433
2649091110,1phc2sys0-21swapper/319:34:123
39407502100,2sleep30-21swapper/320:36:383
2649091104,1phc2sys0-21swapper/319:27:353
2649091103,3phc2sys0-21swapper/323:06:443
2649091101,2phc2sys0-21swapper/322:56:393
2649091101,2phc2sys0-21swapper/300:11:093
2649091100,3phc2sys0-21swapper/320:26:373
2649091100,2phc2sys0-21swapper/323:59:473
2649091100,2phc2sys0-21swapper/323:35:343
2649091100,2phc2sys0-21swapper/323:31:573
2649091100,2phc2sys0-21swapper/322:43:283
2649091100,2phc2sys0-21swapper/322:30:263
2649091100,2phc2sys0-21swapper/322:25:083
2649091100,2phc2sys0-21swapper/321:21:083
2649091100,2phc2sys0-21swapper/320:23:323
2649091100,2phc2sys0-21swapper/300:27:163
2649091100,2phc2sys0-21swapper/300:06:363
2649091100,1phc2sys0-21swapper/320:53:343
2649091100,1phc2sys0-21swapper/320:45:293
2649091100,1phc2sys0-21swapper/320:13:233
2649091100,1phc2sys0-21swapper/320:08:503
2649091100,1phc2sys0-21swapper/319:59:013
264909191,3phc2sys0-21swapper/321:06:403
264909191,2phc2sys0-21swapper/322:45:173
264909191,2phc2sys0-21swapper/322:45:173
264909191,2phc2sys0-21swapper/321:40:033
264909190,2phc2sys0-21swapper/321:10:263
264909190,2phc2sys0-21swapper/320:31:353
264909190,2phc2sys0-21swapper/320:16:523
264909190,2phc2sys0-21swapper/320:01:453
264909190,2phc2sys0-21swapper/319:21:053
38352479981,4cyclictest0-21swapper/219:10:012
264909180,2phc2sys0-21swapper/319:51:393
264909180,2phc2sys0-21swapper/319:51:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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