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2026-07-01 - 08:36
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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
Compare latency of primary with shadow system
Characteristics of the 376 highest latencies:
System rackeslot6.osadl.org (updated Wed Jul 01, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
277931499132126,4cyclictest2864606-21kworker/u8:2+events_unbound23:40:010
277931499120112,5cyclictest2825617-21kworker/u8:0+events_unbound21:35:230
277931699118108,7cyclictest2835410-21latency_hist22:05:011
277931499118104,10cyclictest1213033-21systemd-journal21:55:000
277931499116107,6cyclictest2832260-21kworker/u8:1+events_unbound23:04:590
277931499116106,7cyclictest2875034-21latency_hist00:10:000
277931499114109,4cyclictest2774636-21kworker/u8:1+events_unbound19:20:260
277931499114107,5cyclictest2868061-21kworker/u8:0+events_unbound00:25:240
277931499114105,6cyclictest2869647-21kworker/u8:3+events_unbound23:55:230
277931499113106,4cyclictest2811148-21kworker/u8:2+events_unbound20:55:240
27793149911199,8cyclictest2779202-21kworker/u8:3+events_unbound19:15:150
277931499109102,5cyclictest2787129-21kworker/u8:2+flush-179:020:00:240
277931499109100,6cyclictest2804907-21latency_hist20:30:010
27793149910895,9cyclictest2881389-21kworker/u8:1+events_unbound00:30:190
27793149910895,7cyclictest2858079-21kworker/u8:3+events_unbound23:15:170
277931499107102,4cyclictest2838623-21kworker/u8:2+events_unbound22:50:270
277931499107100,5cyclictest2774636-21kworker/u8:1+events_unbound19:45:010
277931499107100,4cyclictest2832260-21kworker/u8:1+flush-179:023:10:160
27793149910696,7cyclictest2806494-21latency_hist20:35:000
27793169910596,7cyclictest2795602-21kworker/u8:1+flush-179:020:15:001
27793149910496,5cyclictest2823692-21kworker/u8:3+events_unbound21:45:000
27793169910395,6cyclictest2779156-21latency_hist19:10:021
27793149910397,4cyclictest2817523-21kworker/u8:2+flush-179:021:10:210
27793169910295,4cyclictest1213033-21systemd-journal22:45:001
27793149910297,4cyclictest2832260-21kworker/u8:1+events_unbound22:55:240
27793149910291,7cyclictest2787129-21kworker/u8:2+events_unbound20:10:210
27793149910195,5cyclictest2871289-21kworker/u8:2+flush-179:000:00:240
27793149910094,4cyclictest2808070-21kworker/u8:0+flush-179:020:45:210
27793149910091,6cyclictest2808149-21kworker/u8:1+flush-179:021:30:250
2779316999884,12cyclictest2872920-21cupsd00:00:011
2779314999893,4cyclictest2832260-21kworker/u8:1+flush-179:023:25:240
2779314999784,6cyclictest2823692-21kworker/u8:3+events_unbound22:00:150
2779314999687,3cyclictest2832260-21kworker/u8:1+events_unbound22:35:240
2779314999686,6cyclictest2841809-21kworker/u8:0+events_unbound22:30:200
2779314999685,9cyclictest2816567-21apt-get21:05:140
2779316999485,6cyclictest2861411-21latency_hist23:25:011
2779314999483,4cyclictest2864606-21kworker/u8:2+events_unbound23:40:210
2779316999384,7cyclictest2774636-21kworker/u8:1+flush-179:019:25:251
2779314999388,4cyclictest2871289-21kworker/u8:2+events_unbound00:20:260
2779314999388,4cyclictest2774636-21kworker/u8:1+flush-179:019:50:260
2779314999383,7cyclictest2814961-21kworker/u8:0+events_unbound21:00:190
2779316999284,5cyclictest2808149-21kworker/u8:1+flush-179:021:25:201
2779316999280,10cyclictest2803576-21apt-get20:25:111
2779314999286,4cyclictest2823692-21kworker/u8:3+flush-179:022:15:200
2779314999186,3cyclictest2801117-21kworker/u8:0+events_unbound20:15:210
2779316999081,6cyclictest2871289-21kworker/u8:2+flush-179:000:30:171
2779316999075,10cyclictest2806476-21kworker/u8:2+flush-179:020:35:171
2779314998985,3cyclictest2832260-21kworker/u8:1+events_unbound22:10:240
2779314998983,5cyclictest2846791-21kworker/u8:0+flush-179:022:40:210
2779314998981,6cyclictest2774636-21kworker/u8:1+events_unbound19:30:230
2779314998978,5cyclictest2858079-21kworker/u8:3+events_unbound23:20:260
2779316998879,6cyclictest2853164-21latency_hist23:00:001
2779314998883,4cyclictest2808149-21kworker/u8:1+events_unbound21:20:240
2779314998878,3cyclictest2871289-21kworker/u8:2+flush-179:000:15:270
2779314998876,9cyclictest2779441-21apt-get19:10:120
2779314998781,4cyclictest2808149-21kworker/u8:1+events_unbound21:15:240
2779316998669,6cyclictest2871289-21kworker/u8:2+events_unbound00:04:001
2779314998680,4cyclictest2871289-21kworker/u8:2+flush-179:000:35:170
2779314998680,4cyclictest2787129-21kworker/u8:2+flush-179:019:55:210
2779316998474,7cyclictest2774636-21kworker/u8:1+flush-179:019:20:221
2779316998474,6cyclictest2857972-21http23:15:021
2779316998472,9cyclictest1213033-21systemd-journal00:10:111
2779314998478,4cyclictest2869647-21kworker/u8:3+events_unbound23:50:130
2779314998376,5cyclictest2765128-21kworker/u8:2+events_unbound19:25:190
2779314998278,3cyclictest2832260-21kworker/u8:1+flush-179:023:05:260
2779314998278,3cyclictest2808149-21kworker/u8:1+flush-179:020:50:260
2779314998278,3cyclictest2808149-21kworker/u8:1+flush-179:020:50:250
2779314998277,4cyclictest2821057-21kworker/u8:2+flush-179:021:55:270
2779314998274,6cyclictest2795602-21kworker/u8:1+events_unbound20:20:250
2779316998170,8cyclictest1213033-21systemd-journal22:50:011
2779314998176,4cyclictest2838623-21kworker/u8:2+events_unbound22:45:250
2779314998176,4cyclictest2821057-21kworker/u8:2+flush-179:021:45:280
2779314998176,4cyclictest2808070-21kworker/u8:0+events_unbound20:40:220
2779314998175,4cyclictest2832260-21kworker/u8:1+events_unbound22:05:200
2779314998174,5cyclictest2806751-21apt-get20:35:110
2779314998170,8cyclictest2787129-21kworker/u8:2+flush-179:019:40:150
2779314998074,5cyclictest2823692-21kworker/u8:3+events_unbound22:20:270
2779316997864,11cyclictest1213033-21systemd-journal21:00:001
2779314997874,3cyclictest2832260-21kworker/u8:1+flush-179:023:30:220
2779316997766,7cyclictest2832260-21kworker/u8:1+flush-179:023:45:261
2779316997763,9cyclictest2863246-21kworker/u8:0+flush-179:023:35:161
2779316997565,7cyclictest2823692-21kworker/u8:3+flush-179:021:55:001
2779314997570,4cyclictest2823692-21kworker/u8:3+flush-179:021:25:240
2779316997468,4cyclictest2774636-21kworker/u8:1+flush-179:019:20:011
2779316997263,7cyclictest2800381-21apt-get20:15:111
2779316997260,9cyclictest2774636-21kworker/u8:1+flush-179:019:45:011
2779314997268,3cyclictest2795602-21kworker/u8:1+flush-179:020:05:220
2779314997267,4cyclictest2832260-21kworker/u8:1+events_unbound23:45:260
2779316997164,5cyclictest2821057-21kworker/u8:2+flush-179:021:55:151
2779316997063,6cyclictest2841809-21kworker/u8:0+events_unbound22:30:241
2779316997058,8cyclictest2787129-21kworker/u8:2+events_unbound19:45:221
2779316997055,12cyclictest1213033-21systemd-journal21:42:101
2779314997055,6cyclictest2787129-21kworker/u8:2+events_unbound19:35:150
2779316996959,7cyclictest2823692-21kworker/u8:3+events_unbound22:15:231
2779316996958,9cyclictest2851442-21store22:55:011
2779316996955,10cyclictest2814961-21kworker/u8:0+flush-179:021:05:181
2779316996860,5cyclictest2871254-21latency_hist23:55:011
2779316996860,5cyclictest2817523-21kworker/u8:2+flush-179:021:10:221
2779316996654,9cyclictest2863531-21diskstats23:30:161
2779314996359,3cyclictest2875271-21kworker/u8:1+flush-179:000:11:110
2779316996156,4cyclictest2832260-21kworker/u8:1+events_unbound22:10:001
2779316996053,5cyclictest2811148-21kworker/u8:2+flush-179:020:50:221
2779316996053,5cyclictest2811148-21kworker/u8:2+flush-179:020:50:211
2779316996049,7cyclictest2871289-21kworker/u8:2+flush-179:000:15:221
2779319995956,2cyclictest0-21swapper/223:04:592
2779316995955,3cyclictest495-21gpm19:13:001
2779314995954,4cyclictest2838623-21kworker/u8:2+events_unbound22:25:210
2779321995856,1cyclictest0-21swapper/323:24:003
2779316995851,5cyclictest2808070-21kworker/u8:0+flush-179:020:40:251
2779316995751,4cyclictest2864606-21kworker/u8:2+events_unbound23:40:231
2779316995651,4cyclictest2774636-21kworker/u8:1+events_unbound19:50:231
2779316995648,5cyclictest2808149-21kworker/u8:1+events_unbound21:20:141
2779316995549,3cyclictest2832260-21kworker/u8:1+events_unbound23:10:131
2779316995548,5cyclictest2838623-21kworker/u8:2+flush-179:023:00:251
2779319995451,2cyclictest0-21swapper/222:38:002
2779316995444,8cyclictest2871289-21kworker/u8:2+flush-179:000:35:221
2779316995342,8cyclictest2821057-21kworker/u8:2+flush-179:021:45:231
2779316995341,10cyclictest2832260-21kworker/u8:1+flush-179:023:05:231
2779316995246,4cyclictest2858079-21kworker/u8:3+flush-179:023:25:151
2779316995045,4cyclictest2795602-21kworker/u8:1+flush-179:020:20:261
2779316994937,9cyclictest1213033-21systemd-journal21:40:001
2779316994843,4cyclictest2808070-21kworker/u8:0+events_unbound20:45:191
2779316994835,9cyclictest2787129-21kworker/u8:2+events_unbound19:55:201
4577091470,13ptp4l61490irq/134-eno1-TxRx-019:10:013
2779316994742,4cyclictest2871289-21kworker/u8:2+flush-179:000:20:221
2779316994741,4cyclictest2795602-21kworker/u8:1+flush-179:020:05:161
2779319994414,1cyclictest0-21swapper/220:48:002
2779316994438,4cyclictest2787129-21kworker/u8:2+events_unbound19:35:181
2779316994434,7cyclictest1213033-21systemd-journal22:30:011
2779316994338,3cyclictest2832260-21kworker/u8:1+events_unbound22:20:151
2779316994235,5cyclictest2808149-21kworker/u8:1+events_unbound21:30:191
277932199410,39cyclictest2881413-21turbostat00:29:593
277932199410,1cyclictest0-21swapper/300:01:593
277931999412,36cyclictest0-21swapper/222:24:552
2779316994136,3cyclictest714-21Xorg21:18:591
2779316994133,6cyclictest2814961-21kworker/u8:0+flush-179:021:00:211
277931699411,38cyclictest714-21Xorg20:32:001
277931699411,38cyclictest714-21Xorg00:08:001
277932199400,4cyclictest2849739-21turbostat22:50:003
277932199400,38cyclictest2884871-21turbostat00:40:013
277932199400,38cyclictest2869675-21turbostat23:50:003
277932199400,38cyclictest2833818-21turbostat22:00:013
277932199390,4cyclictest2838595-21turbostat22:15:003
277931999380,36cyclictest0-21swapper/219:59:002
2779316993834,3cyclictest2868061-21kworker/u8:0+events_unbound00:25:231
2779321993734,2cyclictest0-21swapper/320:02:593
277932199370,1cyclictest0-21swapper/322:03:593
277932199370,1cyclictest0-21swapper/319:16:003
2779319993734,2cyclictest0-21swapper/223:44:552
2779319993734,2cyclictest0-21swapper/220:43:592
277931999370,35cyclictest0-21swapper/221:58:592
277931999370,35cyclictest0-21swapper/200:07:002
277931999370,1cyclictest0-21swapper/222:18:592
2779316993732,4cyclictest2838623-21kworker/u8:2+flush-179:022:35:151
2779321993634,1cyclictest0-21swapper/322:55:593
2779321993634,1cyclictest0-21swapper/322:20:593
2779321993634,1cyclictest0-21swapper/321:24:553
277932199360,2cyclictest0-21swapper/319:37:593
2779321993533,1cyclictest0-21swapper/323:55:593
2779321993532,2cyclictest0-21swapper/323:07:003
277932199350,1cyclictest0-21swapper/321:28:593
2779319993533,1cyclictest0-21swapper/221:09:592
2779319993532,2cyclictest0-21swapper/223:20:592
2779319993532,2cyclictest0-21swapper/220:28:002
2779319993532,2cyclictest0-21swapper/200:10:592
2779316993529,5cyclictest2795602-21kworker/u8:1+events_unbound20:05:011
4577091340,7ptp4l441ktimers/320:20:003
2779321993432,1cyclictest0-21swapper/322:54:553
2779321993431,2cyclictest0-21swapper/321:11:593
2779319993432,1cyclictest0-21swapper/219:25:002
2779316993427,5cyclictest2832260-21kworker/u8:1+flush-179:022:10:211
4577091330,12ptp4l441ktimers/321:55:013
2779321993330,2cyclictest0-21swapper/321:37:593
2779321993330,2cyclictest0-21swapper/319:50:593
2779319993330,2cyclictest0-21swapper/221:49:562
2779319993330,2cyclictest0-21swapper/220:59:562
2779319993230,1cyclictest0-21swapper/219:40:012
2779319993230,1cyclictest0-21swapper/219:34:582
2779319993229,2cyclictest0-21swapper/222:11:592
2779319993229,2cyclictest0-21swapper/222:09:562
2779316993229,2cyclictest2787139-21munin-run19:35:011
2779321993129,1cyclictest0-21swapper/323:10:593
2779319993129,1cyclictest0-21swapper/221:30:002
2779319993129,1cyclictest0-21swapper/200:00:002
2779319993128,2cyclictest0-21swapper/221:03:592
2779319993128,2cyclictest0-21swapper/220:14:002
2779319993128,2cyclictest0-21swapper/219:17:582
2779319993128,2cyclictest0-21swapper/200:26:592
2779319993128,2cyclictest0-21swapper/200:22:002
2779319993127,2cyclictest0-21swapper/220:20:582
2779321993027,2cyclictest0-21swapper/300:20:153
277932199300,29cyclictest0-21swapper/321:45:143
277932199300,29cyclictest0-21swapper/320:55:133
2779319993027,2cyclictest0-21swapper/223:15:142
2779319993027,2cyclictest0-21swapper/222:52:592
2779319993027,2cyclictest0-21swapper/220:37:582
277931999300,28cyclictest0-21swapper/219:25:122
4577091290,5ptp4l441ktimers/320:39:553
2779321992927,1cyclictest0-21swapper/323:15:033
2779321992927,1cyclictest0-21swapper/320:10:133
2779321992925,2cyclictest4577091ptp4l22:15:113
277932199290,28cyclictest0-21swapper/323:35:013
277932199290,28cyclictest0-21swapper/320:30:123
277932199290,27cyclictest0-21swapper/320:55:023
277932199290,27cyclictest0-21swapper/320:55:013
277932199290,27cyclictest0-21swapper/300:35:013
2779319992926,2cyclictest0-21swapper/221:10:142
2779319992926,2cyclictest0-21swapper/220:15:592
2779319992926,2cyclictest0-21swapper/219:45:022
2779319992926,2cyclictest0-21swapper/219:42:002
277931999290,28cyclictest0-21swapper/221:40:132
277931999290,27cyclictest0-21swapper/222:55:032
277931999290,27cyclictest0-21swapper/220:05:132
277931999290,27cyclictest0-21swapper/200:35:162
4577091280,7ptp4l441ktimers/321:45:013
4577091280,7ptp4l441ktimers/319:30:003
2779321992826,1cyclictest0-21swapper/323:02:593
2779321992826,1cyclictest0-21swapper/320:40:143
277932199280,27cyclictest0-21swapper/323:35:023
277932199280,27cyclictest0-21swapper/322:40:133
277932199280,27cyclictest0-21swapper/322:35:133
277932199280,26cyclictest0-21swapper/323:40:133
277932199280,26cyclictest0-21swapper/322:30:123
277932199280,26cyclictest0-21swapper/322:05:133
277932199280,18cyclictest0-21swapper/321:05:153
2779319992825,2cyclictest0-21swapper/223:15:022
2779319992825,2cyclictest0-21swapper/222:34:592
2779319992825,2cyclictest0-21swapper/220:00:592
277931999280,27cyclictest0-21swapper/223:50:132
277931999280,27cyclictest0-21swapper/223:30:142
277931999280,27cyclictest0-21swapper/200:00:032
277931999280,26cyclictest0-21swapper/223:45:142
277931999280,26cyclictest0-21swapper/221:15:132
277931999280,1cyclictest0-21swapper/221:24:592
277931999280,1cyclictest0-21swapper/200:19:592
4577091270,7ptp4l61490irq/134-eno1-TxRx-022:30:013
4577091270,7ptp4l441ktimers/319:45:003
4577091270,6ptp4l441ktimers/300:15:013
4577091270,5ptp4l441ktimers/300:10:003
277932199270,26cyclictest0-21swapper/320:48:593
277932199270,24cyclictest0-21swapper/323:50:583
2779319992724,2cyclictest0-21swapper/222:43:592
2779319992724,2cyclictest0-21swapper/219:13:002
277931999270,25cyclictest0-21swapper/221:50:592
4577091260,6ptp4l441ktimers/320:29:553
4577091260,5ptp4l441ktimers/321:04:553
4577091260,5ptp4l441ktimers/319:50:003
2779321992624,1cyclictest0-21swapper/321:30:593
2779319992624,1cyclictest0-21swapper/221:34:592
2779319992623,2cyclictest0-21swapper/221:35:592
4577091250,6ptp4l61490irq/134-eno1-TxRx-020:10:013
4577091250,6ptp4l441ktimers/300:19:563
4577091250,5ptp4l441ktimers/319:25:013
4577091250,5ptp4l441ktimers/319:15:013
4577091250,4ptp4l441ktimers/321:20:003
2779321992523,1cyclictest0-21swapper/323:27:593
2779321992523,1cyclictest0-21swapper/319:58:593
2779319992523,1cyclictest0-21swapper/222:49:592
4577091240,5ptp4l441ktimers/320:24:563
2779321992422,1cyclictest0-21swapper/319:34:593
2779319992422,1cyclictest0-21swapper/219:51:582
2779319992220,1cyclictest0-21swapper/222:05:002
2779319992219,2cyclictest0-21swapper/220:50:122
2779319992219,2cyclictest0-21swapper/220:50:122
2779319992118,2cyclictest0-21swapper/223:38:002
2779319992118,2cyclictest0-21swapper/220:33:002
2779319991817,1cyclictest0-21swapper/223:29:592
277931499181,13cyclictest2779317-21latency_hist19:10:010
2779319991714,2cyclictest0-21swapper/200:31:582
2779319991310,2cyclictest0-21swapper/223:05:592
277931999108,1cyclictest0-21swapper/222:29:592
27793199930,3cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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