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2026-04-20 - 04:42
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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 highest latencies:
System rackeslot2.osadl.org (updated Mon Apr 20, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6835152950,1sleep30-21swapper/323:15:533
6622712710,1sleep0662269-21ssh23:03:120
7456322690,1sleep1745635-21grep00:00:011
5725052540,2sleep30-21swapper/322:05:433
336273992623,2cyclictest0-21swapper/023:45:010
336273992516,7cyclictest514943-21kthreadcore21:25:510
336273992413,7cyclictest0-21swapper/023:05:430
336273992320,2cyclictest541933-21/usr/sbin/munin21:45:010
336273992314,4cyclictest617834-21/usr/sbin/munin22:35:490
336273992313,6cyclictest732425-21kthreadcore23:50:500
336273992312,6cyclictest0-21swapper/022:25:510
336278992219,1cyclictest0-21swapper/222:40:562
336277992219,2cyclictest601833-21turbostat22:25:001
336277992216,2cyclictest134050irq/121-eno122:10:001
336277992215,5cyclictest0-21swapper/119:15:011
336273992219,2cyclictest464518-21sh20:50:010
336273992217,4cyclictest484078-21sort21:05:470
336273992214,4cyclictest636066-21kthreadcore22:45:500
33627899212,12cyclictest0-21swapper/222:20:012
33627899211,6cyclictest0-21swapper/223:50:012
336278992116,2cyclictest0-21swapper/222:35:032
336273992111,5cyclictest0-21swapper/000:20:000
336278992018,1cyclictest0-21swapper/222:10:022
336278992018,1cyclictest0-21swapper/220:30:012
336278992018,1cyclictest0-21swapper/220:30:012
336278992018,1cyclictest0-21swapper/219:38:082
336278992017,1cyclictest0-21swapper/223:05:002
336278992017,1cyclictest0-21swapper/221:35:552
336278992017,1cyclictest0-21swapper/220:15:012
336278992017,1cyclictest0-21swapper/200:07:452
336277992017,2cyclictest685264-21sh23:20:001
336277992017,2cyclictest0-21swapper/120:20:001
336277992017,2cyclictest0-21swapper/100:10:001
33627399205,6cyclictest0-21swapper/021:23:590
336273992017,2cyclictest768485-21grep00:15:010
336273992017,2cyclictest1326-21systemd-logind20:35:000
336273992017,2cyclictest1326-21systemd-logind20:35:000
336273992017,2cyclictest1290-21dbus-daemon23:40:000
6340422190,2sleep20-21swapper/222:45:462
383433398190,4rtkit-daemon601923-21ssh22:25:010
336278991917,1cyclictest0-21swapper/219:35:012
336278991916,1cyclictest0-21swapper/222:30:002
336277991916,2cyclictest798323-21grep00:35:001
336277991916,2cyclictest662868-21idleruntime-cro23:05:001
336273991916,2cyclictest685330-21/usr/sbin/munin23:20:010
336273991916,2cyclictest401388-21sendmail20:00:000
2649091191,5phc2sys0-21swapper/321:25:483
336278991815,1cyclictest0-21swapper/223:00:012
336278991815,1cyclictest0-21swapper/221:50:502
336278991815,1cyclictest0-21swapper/221:10:022
336278991815,1cyclictest0-21swapper/220:40:012
336278991814,2cyclictest0-21swapper/200:15:342
33627799189,4cyclictest0-21swapper/122:55:501
33627799189,4cyclictest0-21swapper/121:10:521
336277991815,2cyclictest722918-21apt-key23:45:001
336277991810,3cyclictest0-21swapper/121:50:441
33627399181,7cyclictest351099-21grep19:20:000
336273991815,2cyclictest1-21systemd22:20:010
336273991814,3cyclictest0-21swapper/022:35:010
336273991811,4cyclictest3851702-21mta-sts-daemon00:02:000
336273991810,4cyclictest3851705-21mta-sts-daemon00:06:360
2649091181,11phc2sys0-21swapper/300:27:463
2649091180,2phc2sys0-21swapper/321:38:353
336278991715,1cyclictest0-21swapper/223:55:012
336278991714,1cyclictest0-21swapper/223:35:562
336278991714,1cyclictest0-21swapper/223:20:482
336278991714,1cyclictest0-21swapper/223:10:532
336278991714,1cyclictest0-21swapper/221:20:592
336278991714,1cyclictest0-21swapper/219:15:002
336278991714,1cyclictest0-21swapper/200:00:552
336278991713,2cyclictest0-21swapper/223:25:452
336278991710,4cyclictest0-21swapper/221:40:442
33627799175,2cyclictest17350irq/127-ahci[0000:00:17.0]19:20:001
336277991715,1cyclictest624812-21dump-pmu-power22:40:001
336277991714,2cyclictest336263-21cyclictest20:50:001
336277991714,2cyclictest1296-21polkitd19:45:541
336277991714,2cyclictest0-21swapper/121:30:011
336277991713,2cyclictest0-21swapper/121:20:021
336277991712,3cyclictest1326-21systemd-logind19:25:011
33627799171,14cyclictest691091-21ssh23:20:561
336277991711,2cyclictest134050irq/121-eno121:30:481
336277991710,6cyclictest342555-21munin-node20:55:231
33627399179,7cyclictest0-21swapper/022:55:560
33627399179,4cyclictest0-21swapper/023:30:000
336273991714,2cyclictest543254-21if_enp1s0.821:45:480
336273991714,2cyclictest3851703-21mta-sts-daemon23:45:240
336273991714,2cyclictest370172-21latency_hist19:35:010
336273991714,2cyclictest1-21systemd20:20:010
336273991713,2cyclictest0-21swapper/022:00:010
336273991712,1cyclictest491rcuog/222:40:190
2649091170,3phc2sys0-21swapper/322:35:383
2649091170,2phc2sys0-21swapper/321:43:553
336278991614,1cyclictest0-21swapper/221:00:022
336278991614,1cyclictest0-21swapper/200:30:022
336278991613,2cyclictest0-21swapper/219:40:482
336278991613,1cyclictest0-21swapper/223:40:472
336278991613,1cyclictest0-21swapper/222:55:002
336278991613,1cyclictest0-21swapper/220:20:002
336278991613,1cyclictest0-21swapper/200:35:472
33627899160,7cyclictest0-21swapper/219:15:432
33627799168,3cyclictest0-21swapper/100:35:541
33627799167,4cyclictest0-21swapper/123:30:491
33627799167,4cyclictest0-21swapper/100:10:031
336277991613,2cyclictest775805-21sh00:20:001
336277991613,2cyclictest700418-21latency_hist23:30:011
336277991613,2cyclictest638440-21open_files22:45:531
336277991613,2cyclictest572078-21munin-plugin-st22:05:011
336277991613,2cyclictest572078-21munin-plugin-st22:05:011
336277991613,2cyclictest3824565-21in:imuxsock23:40:001
336277991612,2cyclictest0-21swapper/119:35:021
336277991611,4cyclictest3834332-21rtkit-daemon19:36:331
336277991610,2cyclictest134050irq/121-eno100:23:251
33627399169,6cyclictest0-21swapper/021:20:010
33627399168,2cyclictest0-21swapper/023:30:500
336273991613,2cyclictest776674-21tr00:20:450
336273991613,2cyclictest745525-21latency_hist00:00:020
336273991613,2cyclictest586982-21latency_hist22:15:010
336273991613,2cyclictest3851702-21mta-sts-daemon23:10:510
336273991613,2cyclictest377338-21fschecks_time19:40:460
336273991613,2cyclictest336263-21cyclictest23:20:450
336273991613,2cyclictest1326-21systemd-logind22:55:010
336273991613,2cyclictest0-21swapper/020:40:000
336273991610,5cyclictest522260-21cut21:30:510
2649091160,3phc2sys0-21swapper/319:22:233
2649091160,2phc2sys0-21swapper/322:49:283
2649091160,2phc2sys0-21swapper/300:35:193
383433398150,3rtkit-daemon3851702-21mta-sts-daemon19:12:060
336278991513,1cyclictest0-21swapper/223:05:022
336278991513,1cyclictest0-21swapper/221:45:502
336278991512,1cyclictest0-21swapper/222:04:542
336278991512,1cyclictest0-21swapper/222:04:542
336278991512,1cyclictest0-21swapper/222:00:002
336278991512,1cyclictest0-21swapper/221:15:522
33627899151,10cyclictest0-21swapper/222:40:012
33627799156,2cyclictest134050irq/121-eno100:30:011
33627799151,9cyclictest420079-21grep20:15:011
336277991512,2cyclictest746690-21fschecks_count00:00:481
336277991512,2cyclictest677973-21systemd-run23:15:011
336277991512,2cyclictest645996-21phc2sys22:50:541
336277991512,2cyclictest594512-21systemd-run22:20:021
336277991512,2cyclictest585228-21switchtime22:10:561
336277991512,2cyclictest543732-21kthreadcore21:45:501
336277991512,2cyclictest433106-21sh20:25:001
336277991512,2cyclictest3851875-21systemd-journal20:42:031
336277991512,2cyclictest3824565-21in:imuxsock21:35:261
336277991512,2cyclictest3824500-21cron23:10:001
336277991511,3cyclictest451422-21unixbench-2d20:35:581
336277991511,3cyclictest389531-21cpuspeed_turbos19:50:461
336277991511,3cyclictest3827634-1atopacctd22:25:511
336273991512,2cyclictest388103-21mailstats19:45:540
336273991512,2cyclictest3851703-21mta-sts-daemon21:38:420
336273991512,2cyclictest357950-21cpuspeed_turbos19:25:460
336273991512,2cyclictest352201-21head19:20:470
336273991512,2cyclictest0-21swapper/022:10:000
336273991511,3cyclictest788256-21kthreadcore00:25:540
336273991511,3cyclictest609408-21kworker/u16:1+nfsiod00:38:260
336273991511,3cyclictest609408-21kworker/u16:1+nfsiod00:33:120
336273991511,3cyclictest526933-21kworker/u16:3+nfsiod21:52:280
2649091150,2phc2sys0-21swapper/323:28:373
2649091150,2phc2sys0-21swapper/322:16:323
2649091150,2phc2sys0-21swapper/321:58:223
383433398140,6rtkit-daemon3851702-21mta-sts-daemon20:10:580
336278991412,1cyclictest0-21swapper/222:10:242
336278991412,1cyclictest0-21swapper/221:10:482
336278991412,1cyclictest0-21swapper/221:00:492
336278991412,1cyclictest0-21swapper/220:45:012
336278991412,1cyclictest0-21swapper/220:05:452
336278991412,1cyclictest0-21swapper/220:00:512
336278991411,2cyclictest0-21swapper/220:45:572
336278991411,1cyclictest0-21swapper/223:55:502
336278991411,1cyclictest0-21swapper/223:15:432
336278991411,1cyclictest0-21swapper/221:30:592
336278991411,1cyclictest0-21swapper/220:50:482
336278991411,1cyclictest0-21swapper/220:20:582
336278991411,1cyclictest0-21swapper/219:50:512
336278991411,1cyclictest0-21swapper/200:20:552
33627799149,4cyclictest3851702-21mta-sts-daemon21:09:041
33627799148,5cyclictest655402-21kworker/u16:3-events_unbound23:54:311
336277991412,1cyclictest3851705-21mta-sts-daemon22:40:351
336277991411,2cyclictest615228-21pmu-power22:30:551
336277991411,2cyclictest512016-21sh21:25:011
336277991411,2cyclictest466939-21kthreadcore20:50:511
336277991411,2cyclictest441121-21kthreadcore20:30:511
336277991411,2cyclictest441121-21kthreadcore20:30:511
336277991411,2cyclictest435626-21kthreadcore20:25:511
336277991411,2cyclictest435626-21kthreadcore20:25:511
336277991411,2cyclictest3851698-21mta-sts-daemon19:59:091
336277991411,2cyclictest382650-21latency_hist19:45:011
336277991410,3cyclictest477929-21gltestperf21:00:491
33627399149,4cyclictest342555-21munin-node20:20:380
33627399146,4cyclictest0-21swapper/021:10:060
33627399143,6cyclictest0-21swapper/019:53:250
336273991411,2cyclictest566238-21kthreadcore22:00:490
336273991411,2cyclictest566238-21kthreadcore22:00:490
336273991411,2cyclictest478074-21if_enp1s021:00:500
336273991411,2cyclictest475866-21missed_timers20:55:530
336273991411,2cyclictest434128-21fschecks_time20:25:480
336273991411,2cyclictest434128-21fschecks_time20:25:480
336273991411,2cyclictest413832-21latency_hist20:10:010
336273991411,2cyclictest3851875-21systemd-journal20:45:010
336273991411,2cyclictest376535-21latency_hist19:40:010
2649091140,3phc2sys0-21swapper/300:24:033
2649091140,2phc2sys0-21swapper/323:58:003
2649091140,2phc2sys0-21swapper/323:39:563
2649091140,2phc2sys0-21swapper/322:30:013
2649091140,2phc2sys0-21swapper/320:10:463
2649091140,2phc2sys0-21swapper/319:59:553
2649091140,2phc2sys0-21swapper/300:17:043
2649091140,2phc2sys0-21swapper/300:10:003
336278991311,1cyclictest0-21swapper/221:25:512
336278991311,1cyclictest0-21swapper/219:45:492
336278991311,1cyclictest0-21swapper/200:10:182
336278991310,2cyclictest0-21swapper/222:25:002
336278991310,1cyclictest0-21swapper/223:30:442
336278991310,1cyclictest0-21swapper/220:30:432
336278991310,1cyclictest0-21swapper/220:30:432
336278991310,1cyclictest0-21swapper/219:30:002
33627799139,3cyclictest409267-21kthreadcore20:05:501
33627799139,3cyclictest360000-21kthreadcore19:25:511
33627799137,5cyclictest3851702-21mta-sts-daemon21:43:101
336277991311,1cyclictest3851705-21mta-sts-daemon23:46:071
336277991310,2cyclictest562682-21mailstats21:55:571
336273991310,2cyclictest468162-21kthreadcore20:50:510
336273991310,2cyclictest405302-21kthreadcore20:00:520
2649091131,2phc2sys0-21swapper/321:11:293
2649091130,5phc2sys0-21swapper/300:13:563
2649091130,2phc2sys0-21swapper/323:43:213
2649091130,2phc2sys0-21swapper/322:24:483
2649091130,2phc2sys0-21swapper/321:48:213
2649091130,2phc2sys0-21swapper/320:05:403
33627899128,2cyclictest0-21swapper/219:55:492
336278991210,1cyclictest0-21swapper/219:20:452
336278991210,1cyclictest0-21swapper/200:30:222
33627899120,5cyclictest0-21swapper/219:10:012
33627799125,5cyclictest401838-21aten_repower_po20:00:451
2649091120,3phc2sys0-21swapper/323:10:503
2649091120,3phc2sys0-21swapper/321:05:453
2649091120,2phc2sys0-21swapper/320:45:033
2649091120,2phc2sys0-21swapper/319:10:423
2649091120,2phc2sys0-21swapper/300:34:313
33627799118,2cyclictest0-21swapper/119:10:011
33627399114,4cyclictest1290-21dbus-daemon19:10:010
2649091111,2phc2sys0-21swapper/321:00:513
2649091111,2phc2sys0-21swapper/320:20:523
2649091110,5phc2sys0-21swapper/323:05:443
2649091110,2phc2sys0-21swapper/323:21:163
2649091110,2phc2sys0-21swapper/321:24:063
2649091110,1phc2sys0-21swapper/320:35:233
2649091110,1phc2sys0-21swapper/320:34:223
2649091110,1phc2sys0-21swapper/320:34:223
2649091110,1phc2sys0-21swapper/319:43:363
2649091110,1phc2sys0-21swapper/319:16:353
2649091110,1phc2sys0-21swapper/300:04:053
2649091101,2phc2sys0-21swapper/323:00:443
2649091101,2phc2sys0-21swapper/322:33:023
2649091101,2phc2sys0-21swapper/320:55:503
2649091100,4phc2sys0-21swapper/320:50:443
2649091100,2phc2sys0-21swapper/323:30:423
2649091100,2phc2sys0-21swapper/322:56:343
2649091100,2phc2sys0-21swapper/322:52:143
2649091100,2phc2sys0-21swapper/322:00:073
2649091100,2phc2sys0-21swapper/322:00:073
2649091100,2phc2sys0-21swapper/321:50:133
2649091100,2phc2sys0-21swapper/320:00:513
2649091100,1phc2sys0-21swapper/321:19:573
264909191,2phc2sys0-21swapper/322:42:083
264909191,2phc2sys0-21swapper/322:10:293
264909191,2phc2sys0-21swapper/319:05:493
264909191,1phc2sys0-21swapper/319:45:443
264909190,6phc2sys363503-21chrt19:29:363
264909190,2phc2sys0-21swapper/323:50:103
264909190,2phc2sys0-21swapper/323:45:373
264909190,2phc2sys0-21swapper/321:30:213
264909190,2phc2sys0-21swapper/320:40:523
264909190,2phc2sys0-21swapper/320:25:453
264909190,2phc2sys0-21swapper/320:25:453
264909190,2phc2sys0-21swapper/320:15:473
264909190,2phc2sys0-21swapper/319:35:433
264909190,2phc2sys0-21swapper/319:30:543
264909180,2phc2sys0-21swapper/319:50:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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