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2026-04-19 - 10:05
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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 Sun Apr 19, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300069121540,1sleep03000689-21diskstats23:50:480
300676221520,2sleep30-21swapper/323:53:593
28702652730,2sleep30-21swapper/322:20:563
29244592500,2sleep30-21swapper/322:59:523
2605835992715,8cyclictest2809915-21mailstats21:40:570
2605837992623,1cyclictest0-21swapper/222:00:012
2605835992621,4cyclictest3014582-21ssh00:00:000
2605835992620,5cyclictest2766571-21grep21:15:000
2605835992620,5cyclictest1290-21dbus-daemon23:15:010
2605835992519,5cyclictest1290-21dbus-daemon00:15:000
2605835992513,8cyclictest2813511-21kthreadcore21:45:520
2605835992413,10cyclictest0-21swapper/022:25:010
2605835992411,8cyclictest0-21swapper/000:25:010
2605835992410,8cyclictest2782104-21/usr/sbin/munin21:25:530
260583599231,5cyclictest3060056-21munin-run00:30:010
2605835992315,7cyclictest134050irq/121-eno122:45:010
2605837992219,1cyclictest0-21swapper/200:15:012
2605835992217,4cyclictest3075211-21latency_hist00:40:020
2605835992216,5cyclictest2715050-21gmain20:35:010
27331372210,2sleep30-21swapper/320:45:573
2605837992112,5cyclictest0-21swapper/219:45:452
260583699210,4cyclictest2891207-21cut22:35:531
260583599218,5cyclictest0-21swapper/022:00:460
260583599213,3cyclictest2620667-21plymouth19:20:000
260583599213,3cyclictest2620667-21plymouth19:20:000
2605835992115,5cyclictest2954792-21sh23:20:020
2605835992115,5cyclictest2856955-21cron22:15:000
2605835992115,5cyclictest1290-21dbus-daemon23:30:560
2605835992115,5cyclictest1-21systemd23:00:010
2605835992114,5cyclictest3045157-21munin-plugin-st00:20:020
2605837992017,1cyclictest0-21swapper/220:25:012
2605836992013,3cyclictest3040875-21kthreadcore00:15:521
2605836992011,4cyclictest0-21swapper/100:20:441
260583599207,12cyclictest3851705-21mta-sts-daemon20:40:440
260583599206,6cyclictest0-21swapper/019:25:190
260583599206,13cyclictest3023385-21cstates00:05:460
260583599205,6cyclictest0-21swapper/023:35:520
260583599204,7cyclictest3016231-21cat00:00:490
260583599204,7cyclictest2962636-21aten2.4-expect23:25:450
2605835992014,5cyclictest2907835-21mailstats22:45:570
2605835992014,5cyclictest2759084-21gpgconf21:10:010
2605835992014,5cyclictest2758734-21diskmemload23:20:290
2605835992014,5cyclictest1296-21polkitd21:55:010
2605835992014,5cyclictest1-21systemd22:20:000
2605835992010,9cyclictest2605833-21cyclictest22:50:440
2605835992010,2cyclictest2651889-21turbostat19:45:000
2605837991917,1cyclictest0-21swapper/223:20:022
2605837991917,1cyclictest0-21swapper/221:40:002
2605836991916,2cyclictest3067493-21cat00:35:001
2605836991916,2cyclictest2887036-21perf22:35:001
2605836991911,3cyclictest0-21swapper/123:30:011
260583599193,7cyclictest2639924-21aten2.4-expect19:35:460
260583599191,9cyclictest2721218-21latency_hist20:40:010
260583599191,6cyclictest2626720-21sshd19:23:010
2605835991914,4cyclictest3827634-1atopacctd20:10:510
2605835991913,5cyclictest2779755-21wc21:20:560
2605835991913,5cyclictest2612222-21kthreadcore19:15:000
2605835991913,5cyclictest2605955-21systemd-run19:10:010
2605835991913,5cyclictest0-21swapper/022:35:000
260583599191,2cyclictest2739978-21cron20:55:000
2605835991912,3cyclictest3851702-21mta-sts-daemon21:56:140
2605835991912,3cyclictest2518406-21kworker/u16:1+nfsiod21:34:130
2605835991912,2cyclictest2928049-21kthreadcore23:00:530
260583799187,7cyclictest0-21swapper/222:10:432
2605837991816,1cyclictest0-21swapper/223:25:012
2605837991816,1cyclictest0-21swapper/221:10:022
2605837991815,1cyclictest0-21swapper/222:05:012
2605837991815,1cyclictest0-21swapper/221:35:012
2605837991815,1cyclictest0-21swapper/221:05:002
2605837991815,1cyclictest0-21swapper/221:00:002
2605837991815,1cyclictest0-21swapper/220:15:002
2605837991815,1cyclictest0-21swapper/219:15:022
2605837991815,1cyclictest0-21swapper/219:15:022
2605837991814,2cyclictest0-21swapper/200:30:002
2605837991812,2cyclictest0-21swapper/220:15:442
2605836991815,2cyclictest3007131-21systemd-run23:55:001
2605836991815,2cyclictest2827439-21/usr/sbin/munin21:55:561
2605836991815,2cyclictest2795176-21grep21:30:581
2605836991815,2cyclictest2612146-21kthreadcore19:15:011
2605836991815,2cyclictest0-21swapper/121:55:011
2605836991815,2cyclictest0-21swapper/119:50:001
2605836991813,2cyclictest3851703-21mta-sts-daemon22:16:041
260583599189,2cyclictest3851704-21mta-sts-daemon23:41:050
260583599189,2cyclictest3851704-21mta-sts-daemon23:41:050
260583599187,5cyclictest2937247-21cut23:05:530
260583599187,4cyclictest2658696-21tail19:50:450
260583599187,4cyclictest0-21swapper/022:35:480
260583599185,3cyclictest2804078-21latency_hist21:40:020
260583599184,5cyclictest2767082-21/usr/sbin/munin21:15:430
260583599181,7cyclictest3060521-21apt-get00:30:450
2605835991813,4cyclictest3851704-21mta-sts-daemon20:20:480
2605835991813,4cyclictest2847750-21mailstats22:05:570
2605835991812,2cyclictest2993971-21sed23:45:480
2605835991812,2cyclictest2665445-21gltestperf19:55:470
2605835991811,2cyclictest2873388-21if_enp1s022:25:480
2605835991811,2cyclictest2678593-21kthreadcore20:05:520
2649091170,2phc2sys0-21swapper/323:30:593
2605837991714,1cyclictest0-21swapper/221:55:002
2605837991714,1cyclictest0-21swapper/219:30:002
260583699179,3cyclictest0-21swapper/123:05:021
260583699179,3cyclictest0-21swapper/122:10:011
260583699179,3cyclictest0-21swapper/119:56:251
260583699178,3cyclictest3851705-21mta-sts-daemon20:01:081
2605836991716,1cyclictest0-21swapper/121:23:481
2605836991714,2cyclictest3851705-21mta-sts-daemon21:46:101
2605836991714,2cyclictest3827634-1atopacctd22:45:581
2605836991714,2cyclictest3057848-21kthreadcore00:25:551
2605836991714,2cyclictest3016199-21gltestperf00:00:491
2605836991714,2cyclictest3014987-21gdbus00:00:011
2605836991714,2cyclictest2842003-21latency_hist22:05:011
2605836991714,2cyclictest2810313-21grep21:40:591
2605836991714,2cyclictest2644533-21latency19:35:531
2605836991714,2cyclictest1-21systemd22:25:561
2605836991714,2cyclictest1-21systemd21:10:021
2605836991714,2cyclictest0-21swapper/122:25:001
2605836991713,3cyclictest1326-21systemd-logind23:40:011
260583599178,4cyclictest0-21swapper/020:25:520
2605835991711,2cyclictest2747941-21kthreadcore21:00:490
2605835991711,1cyclictest0-21swapper/020:55:510
2605835991710,3cyclictest3834332-21rtkit-daemon20:16:110
2605835991710,2cyclictest2652304-21aten_repower_en19:45:450
2605835991710,2cyclictest2637571-21kthreadcore19:30:530
2649091160,2phc2sys0-21swapper/322:00:533
2649091160,2phc2sys0-21swapper/321:16:113
2649091160,2phc2sys0-21swapper/319:05:023
2649091160,2phc2sys0-21swapper/300:09:393
2605837991614,1cyclictest0-21swapper/221:20:562
2605837991613,1cyclictest0-21swapper/223:05:012
2605837991613,1cyclictest0-21swapper/219:35:002
2605837991613,1cyclictest0-21swapper/219:15:002
2605837991613,1cyclictest0-21swapper/200:15:542
2605837991613,1cyclictest0-21swapper/200:01:002
260583799161,10cyclictest0-21swapper/222:10:002
260583699168,3cyclictest0-21swapper/100:05:441
2605836991613,2cyclictest3851704-21mta-sts-daemon21:35:471
2605836991613,2cyclictest3824565-21in:imuxsock22:14:261
2605836991613,2cyclictest3037561-21sh00:15:011
2605836991613,2cyclictest2993041-21cstates23:45:441
2605836991613,2cyclictest2787411-21mailstats21:25:551
2605836991612,3cyclictest2605833-21cyclictest20:10:481
2605836991612,2cyclictest0-21swapper/100:40:011
2605835991611,1cyclictest2671053-21/usr/sbin/munin20:00:540
2605835991610,2cyclictest2731381-21kthreadcore20:45:520
2649091150,2phc2sys0-21swapper/300:17:413
2649091150,1phc2sys0-21swapper/322:17:203
260583799158,4cyclictest0-21swapper/222:20:002
2605837991513,1cyclictest0-21swapper/222:50:012
2605837991513,1cyclictest0-21swapper/222:25:012
2605837991513,1cyclictest0-21swapper/221:50:012
2605837991513,1cyclictest0-21swapper/220:35:022
2605837991512,1cyclictest0-21swapper/223:40:462
2605837991512,1cyclictest0-21swapper/223:40:462
2605837991512,1cyclictest0-21swapper/223:39:342
2605837991512,1cyclictest0-21swapper/223:11:512
2605837991512,1cyclictest0-21swapper/222:35:522
2605837991512,1cyclictest0-21swapper/221:20:012
2605837991512,1cyclictest0-21swapper/220:50:452
2605837991511,2cyclictest0-21swapper/222:53:472
2605837991511,2cyclictest0-21swapper/221:25:472
2605837991511,2cyclictest0-21swapper/220:05:002
2605836991512,2cyclictest3851705-21mta-sts-daemon22:56:121
2605836991512,2cyclictest3851705-21mta-sts-daemon21:05:001
2605836991512,2cyclictest2985119-21acpi23:40:431
2605836991512,2cyclictest2985119-21acpi23:40:431
2605836991512,2cyclictest2970241-21aten_repower_vo23:30:451
2605836991512,2cyclictest2932579-21acpi23:05:441
2605836991512,2cyclictest2912992-21kthreadcore22:50:511
2605836991512,2cyclictest2895785-21gltestperf22:40:471
2605836991512,2cyclictest2774318-21systemd-run21:20:011
2605836991512,2cyclictest2728451-21fschecks_count20:45:481
2605836991512,2cyclictest2683265-21sh20:10:011
2605836991512,2cyclictest0-21swapper/120:55:001
2605836991511,3cyclictest2697991-21kthreadcore20:20:491
2605836991511,3cyclictest2617594-21kthreadcore19:15:521
2605836991511,3cyclictest2617594-21kthreadcore19:15:521
29127862141,2sleep30-21swapper/322:50:513
28200132140,2sleep30-21swapper/321:50:463
2649091140,3phc2sys0-21swapper/300:20:193
2649091140,2phc2sys0-21swapper/323:36:293
2649091140,2phc2sys0-21swapper/300:30:033
2649091140,2phc2sys0-21swapper/300:29:523
2605837991412,1cyclictest0-21swapper/223:55:012
2605837991412,1cyclictest0-21swapper/223:00:022
2605837991412,1cyclictest0-21swapper/221:40:442
2605837991411,2cyclictest0-21swapper/222:34:062
2605837991411,1cyclictest0-21swapper/222:43:202
2605837991411,1cyclictest0-21swapper/219:20:492
2605837991411,1cyclictest0-21swapper/200:35:492
2605837991411,1cyclictest0-21swapper/200:20:592
2605837991410,2cyclictest0-21swapper/223:30:282
2605837991410,2cyclictest0-21swapper/200:33:322
260583699149,4cyclictest3851702-21mta-sts-daemon20:42:291
260583699149,2cyclictest2956394-21ssh23:20:521
2605836991411,2cyclictest351ktimers/121:00:001
2605836991411,2cyclictest2708510-21latency_hist20:30:011
2605836991411,2cyclictest0-21swapper/121:15:011
2605836991410,3cyclictest2624734-21kthreadcore19:20:521
27655472130,7sleep30-21swapper/321:11:553
2649091133,2phc2sys0-21swapper/322:40:013
2649091130,3phc2sys0-21swapper/323:00:463
2649091130,2phc2sys0-21swapper/322:33:123
2649091130,2phc2sys0-21swapper/321:58:373
2649091130,2phc2sys0-21swapper/320:15:033
2649091130,1phc2sys0-21swapper/320:58:093
260583799139,2cyclictest0-21swapper/223:49:202
260583799139,2cyclictest0-21swapper/200:05:402
260583799133,7cyclictest0-21swapper/222:30:002
260583799132,8cyclictest0-21swapper/219:10:002
2605837991311,1cyclictest0-21swapper/220:45:522
2605837991311,1cyclictest0-21swapper/220:25:532
2605837991311,1cyclictest0-21swapper/200:00:002
2605837991310,1cyclictest0-21swapper/223:25:382
2605837991310,1cyclictest0-21swapper/223:05:522
2605837991310,1cyclictest0-21swapper/220:40:022
2605837991310,1cyclictest0-21swapper/220:05:542
260583699138,4cyclictest3851702-21mta-sts-daemon20:15:121
260583699137,5cyclictest3851703-21mta-sts-daemon19:25:581
2605836991311,1cyclictest0-21swapper/119:10:001
2605836991310,2cyclictest3851704-21mta-sts-daemon23:15:271
2605836991310,2cyclictest3851703-21mta-sts-daemon23:12:141
2605836991310,2cyclictest2720154-21latency20:35:551
2605836991310,2cyclictest2710144-21tr20:30:491
2605836991310,2cyclictest2660959-21kthreadcore19:50:511
2605836991310,2cyclictest2646648-21fschecks_time19:40:481
2605836991310,2cyclictest2634477-21grep19:30:511
2649091122,2phc2sys0-21swapper/323:23:153
2649091122,2phc2sys0-21swapper/319:40:013
2649091121,5phc2sys0-21swapper/323:15:443
2649091121,5phc2sys0-21swapper/322:05:453
2649091121,3phc2sys0-21swapper/320:28:293
2649091120,4phc2sys0-21swapper/323:45:403
2649091120,3phc2sys0-21swapper/323:55:413
2649091120,3phc2sys0-21swapper/322:11:363
2649091120,2phc2sys0-21swapper/322:28:003
2649091120,2phc2sys0-21swapper/320:38:053
2649091120,1phc2sys0-21swapper/321:37:203
2649091120,1phc2sys0-21swapper/300:00:423
260583799129,1cyclictest0-21swapper/219:43:022
260583799126,2cyclictest0-21swapper/219:55:432
260583799121,3cyclictest27215852sleep220:40:442
2605837991210,1cyclictest0-21swapper/221:10:532
2649091114,2phc2sys0-21swapper/321:25:453
2649091113,2phc2sys0-21swapper/321:20:533
2649091111,2phc2sys0-21swapper/322:45:463
2649091110,3phc2sys0-21swapper/321:40:573
2649091110,2phc2sys0-21swapper/323:42:343
2649091110,2phc2sys0-21swapper/323:42:343
2649091110,2phc2sys0-21swapper/319:10:443
2649091110,1phc2sys0-21swapper/323:06:113
2649091110,1phc2sys0-21swapper/321:34:443
2649091110,1phc2sys0-21swapper/320:44:343
2649091110,1phc2sys0-21swapper/320:01:343
2649091110,1phc2sys0-21swapper/319:43:143
2649091110,1phc2sys0-21swapper/319:31:253
2649091110,1phc2sys0-21swapper/319:19:223
2649091110,1phc2sys0-21swapper/319:19:223
260583799119,1cyclictest0-21swapper/219:50:122
260583799119,1cyclictest0-21swapper/219:35:522
2649091101,2phc2sys0-21swapper/323:25:193
2649091100,2phc2sys0-21swapper/323:10:523
2649091100,2phc2sys0-21swapper/322:44:543
2649091100,2phc2sys0-21swapper/321:48:353
2649091100,2phc2sys0-21swapper/320:06:233
2649091100,2phc2sys0-21swapper/300:35:493
2649091100,2phc2sys0-21swapper/300:12:293
2649091100,1phc2sys0-21swapper/321:00:133
2649091100,1phc2sys0-21swapper/319:51:563
264909191,2phc2sys0-21swapper/321:05:023
264909191,2phc2sys0-21swapper/320:30:523
264909191,2phc2sys0-21swapper/320:20:503
264909191,2phc2sys0-21swapper/319:55:373
264909191,1phc2sys0-21swapper/320:50:393
264909190,2phc2sys0-21swapper/320:10:443
264909190,2phc2sys0-21swapper/319:45:463
264909190,2phc2sys0-21swapper/319:25:233
264909190,2phc2sys0-21swapper/319:24:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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