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2026-05-28 - 11:44
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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 highest latencies:
System rackeslot6.osadl.org (updated Thu May 28, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
261645999134108,22cyclictest2651627-21latency_hist21:00:021
261645999134108,22cyclictest2651627-21latency_hist21:00:011
261645799124113,8cyclictest2710256-40mandb00:00:000
26164579910897,8cyclictest2634125-21latency_hist20:05:020
26164599910696,7cyclictest2715298-21kworker/u8:2+flush-179:000:15:251
26164579910292,8cyclictest2654804-21latency_hist21:10:020
26164579910089,8cyclictest2689007-21latency_hist22:55:010
2616457999992,5cyclictest2672812-21kworker/u8:0+flush-179:022:15:020
2616459999583,9cyclictest1213033-21systemd-journal23:25:011
2616459999487,4cyclictest2621369-21kworker/u8:0+flush-179:019:25:221
2616459998978,8cyclictest1213033-21systemd-journal20:35:001
2616457998881,5cyclictest2659329-21kworker/u8:2+flush-179:022:30:020
2616457998779,5cyclictest2686856-21kworker/u8:0+flush-179:022:50:010
2616457998674,9cyclictest1213033-21systemd-journal19:55:000
2616459998572,11cyclictest2616260-21kworker/u8:1+events_unbound19:20:011
2616457998476,5cyclictest2703835-21kworker/u8:2+events_unbound23:45:010
2616459998375,6cyclictest2711904-21apt-get00:05:001
2616459998375,5cyclictest2638897-21latency_hist20:20:001
2616459998374,7cyclictest2679441-21kworker/u8:1+flush-179:022:55:001
2616459998272,7cyclictest2720081-21kworker/u8:1+flush-179:000:30:001
2616457998273,6cyclictest2695377-21latency_hist23:15:010
2616459998172,6cyclictest1213033-21systemd-journal20:15:001
2616457998171,7cyclictest2715298-21kworker/u8:2+flush-179:000:15:230
2616457998171,7cyclictest2635709-21latency_hist20:10:010
2616459997974,3cyclictest1-21systemd00:10:011
2616457997970,6cyclictest2659329-21kworker/u8:2+flush-179:021:40:180
2616459997662,12cyclictest2695412-21kworker/u8:3+flush-179:023:25:151
2616457997655,9cyclictest2619803-21apt-get19:20:110
2616457997565,6cyclictest1213033-21systemd-journal00:35:000
2616457997468,4cyclictest2705443-21kworker/u8:1+flush-179:000:10:220
2616459997361,9cyclictest2710225-40logrotate00:00:011
2616457997367,4cyclictest2695412-21kworker/u8:3+flush-179:023:20:200
2616457997266,4cyclictest2716965-21kworker/u8:0+flush-179:000:20:210
2616459997061,7cyclictest2715298-21kworker/u8:2+events_unbound00:15:021
2616459997059,8cyclictest2684250-21latency_hist22:40:011
2616459997058,10cyclictest2654813-21apt-get21:10:001
2616457997064,5cyclictest2698812-21kworker/u8:0+flush-179:023:30:160
2616457997061,6cyclictest2624308-21latency_hist19:35:000
2616457996958,9cyclictest2642331-21apt-get20:30:120
2616457996862,4cyclictest2674677-21apt-get22:10:100
2616457996862,4cyclictest2659329-21kworker/u8:2+flush-179:021:30:220
2616457996857,4cyclictest2651599-21kworker/u8:0+events_unbound21:10:010
261645799680,65cyclictest0-21swapper/020:58:590
261645799680,65cyclictest0-21swapper/020:58:590
2616457996759,6cyclictest2648439-21latency_hist20:50:010
2616457996753,10cyclictest1213033-21systemd-journal20:45:000
2616459996652,8cyclictest2617927-21kworker/u8:2+flush-179:019:50:201
2616457996660,4cyclictest2616260-21kworker/u8:1+flush-179:019:10:150
2616457996656,8cyclictest2698812-21kworker/u8:0+events_unbound23:35:210
2616457996656,8cyclictest2651599-21kworker/u8:0+flush-179:021:15:210
2616457996655,8cyclictest2635745-21kworker/u8:1+flush-179:020:20:000
2616457996555,7cyclictest2635745-21kworker/u8:1+flush-179:020:20:210
2616457996459,4cyclictest2659888-21kworker/u8:3+flush-179:021:35:160
2616457996357,4cyclictest2617927-21kworker/u8:2+flush-179:019:45:150
2616457996355,5cyclictest2631164-21kworker/u8:0+flush-179:020:40:010
2616457996352,8cyclictest2672576-21latency_hist22:05:010
2616459996254,6cyclictest2647395-21diskstats20:45:141
2616459996252,7cyclictest2676017-21apt-get22:15:011
2616457996255,5cyclictest2679441-21kworker/u8:1+events_unbound22:45:000
2616457996255,4cyclictest2711863-21sshd00:04:000
2616459996154,5cyclictest2690595-21latency_hist23:00:011
2616459996152,7cyclictest2698812-21kworker/u8:0+flush-179:023:35:011
2616459996150,10cyclictest2698812-21kworker/u8:0+flush-179:023:35:161
2616457996154,5cyclictest2707084-21kworker/u8:0+events_unbound00:05:150
2616457996153,6cyclictest2659888-21kworker/u8:3+flush-179:021:45:110
2616457996153,6cyclictest2659888-21kworker/u8:3+flush-179:021:45:110
2616457996052,5cyclictest2682639-21latency_hist22:35:010
2616459995952,5cyclictest2635745-21kworker/u8:1+events_unbound20:35:241
2616457995953,4cyclictest2686856-21kworker/u8:0+flush-179:023:00:160
2616457995952,5cyclictest2686856-21kworker/u8:0+flush-179:023:15:210
2616457995745,6cyclictest2659329-21kworker/u8:2+flush-179:022:20:200
2616462995653,2cyclictest0-21swapper/220:59:002
2616462995653,2cyclictest0-21swapper/220:58:592
2616459995650,4cyclictest2627995-21/usr/sbin/munin19:45:221
2616459995648,6cyclictest2659888-21kworker/u8:3+flush-179:022:00:221
2616459995644,9cyclictest2631164-21kworker/u8:0+flush-179:020:00:011
2616457995648,6cyclictest2642106-21systemd-run20:30:000
2616457995550,4cyclictest2651599-21kworker/u8:0+flush-179:021:20:150
2616457995549,4cyclictest2659888-21kworker/u8:3+flush-179:021:55:150
2616457995544,9cyclictest2718772-21apt-get00:25:110
2616459995447,5cyclictest2631164-21kworker/u8:0+flush-179:020:50:211
261645999540,37cyclictest2620749-21sendmail_mailtr19:20:221
2616457995449,3cyclictest2705443-21kworker/u8:1+flush-179:023:50:160
2616463995351,1cyclictest0-21swapper/322:44:593
2616459995347,5cyclictest2659329-21kworker/u8:2+flush-179:021:50:151
2616459995347,4cyclictest2658495-21/usr/sbin/munin21:20:221
2616459995344,6cyclictest2651599-21kworker/u8:0+flush-179:021:15:241
2616459995335,16cyclictest714-21Xorg22:16:591
2616457995347,4cyclictest2659888-21kworker/u8:3+flush-179:022:05:240
2616457995347,4cyclictest2651599-21kworker/u8:0+flush-179:021:30:000
261645799531,49cyclictest1-21systemd19:57:430
2616459995218,19cyclictest2624357-21apt-key19:35:011
2616463995150,1cyclictest0-21swapper/320:00:003
2616457995144,5cyclictest2686856-21kworker/u8:0+events_unbound23:10:000
2616457995045,4cyclictest2617927-21kworker/u8:2+events_unbound19:15:190
2616457995045,3cyclictest2698812-21kworker/u8:0+flush-179:023:30:010
2616457995044,4cyclictest2622758-21systemd-run19:30:010
2616457995042,5cyclictest2669380-21latency_hist21:55:010
2616459994942,4cyclictest2659329-21kworker/u8:2+flush-179:021:40:141
2616459994938,8cyclictest2631164-21kworker/u8:0+flush-179:020:25:201
2616459994916,22cyclictest0-21swapper/123:15:001
261645999491,46cyclictest0-21swapper/119:40:121
2616457994941,4cyclictest2617927-21kworker/u8:2+flush-179:019:35:220
4577091480,13ptp4l441ktimers/319:10:013
2616459994841,5cyclictest2720081-21kworker/u8:1+flush-179:000:30:221
2616459994730,15cyclictest714-21Xorg23:17:591
2616459994714,20cyclictest0-21swapper/121:25:121
2616457994743,3cyclictest2679441-21kworker/u8:1+flush-179:022:55:150
2616459994526,17cyclictest2685451-21mailstats22:40:231
261645999452,29cyclictest2667219-21awk21:45:211
261645999452,29cyclictest2667219-21awk21:45:201
261645999450,43cyclictest714-21Xorg22:45:591
2616457994537,6cyclictest2626410-21kworker/u8:0+flush-179:019:40:180
2616457994536,6cyclictest2679441-21kworker/u8:1+flush-179:022:35:210
2616459994426,17cyclictest0-21swapper/119:35:141
2616457994439,4cyclictest2703835-21kworker/u8:2+flush-179:023:45:160
261645799441,7cyclictest2637295-21sh20:15:000
261646299430,40cyclictest0-21swapper/220:10:012
2616459994326,14cyclictest2681308-21apt-get22:30:111
261645999432,4cyclictest2654815-21turbostat21:14:551
261645999430,41cyclictest714-21Xorg20:01:591
261645999430,30cyclictest2723379-21latency_hist00:40:021
261645999430,30cyclictest2723379-21latency_hist00:40:021
261646299420,40cyclictest0-21swapper/223:10:002
261646299420,40cyclictest0-21swapper/220:45:592
2616459994236,4cyclictest2686856-21kworker/u8:0+flush-179:023:05:151
2616459994234,7cyclictest2659329-21kworker/u8:2+flush-179:022:00:001
2616459994224,16cyclictest2646717-21unixbench-2d20:40:251
2616457994232,8cyclictest2651887-21apt-get21:00:120
2616459994135,4cyclictest2703835-21kworker/u8:2+flush-179:023:45:001
2616459994134,5cyclictest2659888-21kworker/u8:3+flush-179:022:05:221
261645999411,24cyclictest714-21Xorg20:08:591
261645999410,27cyclictest2706963-21unixbench_singl23:45:251
2616457994131,5cyclictest0-21swapper/000:39:590
2616457994131,5cyclictest0-21swapper/000:39:590
261646299400,1cyclictest0-21swapper/221:56:002
261645999401,37cyclictest2653222-21idleruntime-cro21:04:591
2616457993934,4cyclictest2631164-21kworker/u8:0+flush-179:020:50:240
2616463993836,1cyclictest0-21swapper/300:14:003
2616463993836,1cyclictest0-21swapper/300:03:593
261646399380,37cyclictest0-21swapper/320:29:593
2616462993835,2cyclictest0-21swapper/200:39:582
2616462993835,2cyclictest0-21swapper/200:39:582
2616459993830,7cyclictest2616260-21kworker/u8:1+flush-179:019:10:241
2616459993829,6cyclictest2707591-21diskstats23:50:141
2616459993820,12cyclictest2659329-21kworker/u8:2+events_unbound21:30:141
2616463993735,1cyclictest0-21swapper/323:46:593
261646399370,36cyclictest0-21swapper/319:47:593
261646299370,35cyclictest0-21swapper/220:26:582
2616459993734,2cyclictest714-21Xorg00:20:591
2616459993724,12cyclictest0-21swapper/122:23:001
261645999370,24cyclictest2691920-21find23:00:231
2616463993634,1cyclictest0-21swapper/323:01:593
2616463993634,1cyclictest0-21swapper/322:04:553
261646399360,35cyclictest2677869-21turbostat22:20:003
261646399360,35cyclictest0-21swapper/319:41:593
261646399360,35cyclictest0-21swapper/319:12:583
261646399360,35cyclictest0-21swapper/300:30:593
2616462993634,1cyclictest0-21swapper/200:24:592
2616462993633,2cyclictest0-21swapper/223:54:562
2616462993633,2cyclictest0-21swapper/219:26:592
2616462993633,2cyclictest0-21swapper/219:20:582
2616462993633,2cyclictest0-21swapper/200:28:002
2616462993633,2cyclictest0-21swapper/200:00:592
261646299360,1cyclictest0-21swapper/222:04:592
261646299360,1cyclictest0-21swapper/221:39:592
2616463993534,1cyclictest0-21swapper/319:28:593
2616463993533,1cyclictest0-21swapper/321:34:593
2616463993533,1cyclictest0-21swapper/319:19:553
2616462993533,1cyclictest0-21swapper/220:14:592
2616462993532,2cyclictest0-21swapper/222:31:592
2616462993532,2cyclictest0-21swapper/221:12:592
2616462993532,2cyclictest0-21swapper/219:50:002
2616459993528,5cyclictest2616324-21latency_hist19:10:011
261645999352,29cyclictest281ktimers/122:25:121
2616459993518,15cyclictest0-21swapper/120:20:231
2616462993431,2cyclictest0-21swapper/223:20:592
2616462993431,2cyclictest0-21swapper/222:43:592
2616462993330,2cyclictest0-21swapper/223:15:592
2616462993330,2cyclictest0-21swapper/220:21:002
2616463993230,1cyclictest0-21swapper/323:40:593
2616463993230,1cyclictest0-21swapper/322:33:593
2616463993230,1cyclictest0-21swapper/322:28:593
2616463993230,1cyclictest0-21swapper/322:21:593
2616463993230,1cyclictest0-21swapper/322:13:593
2616463993230,1cyclictest0-21swapper/321:07:003
261645999320,31cyclictest0-21swapper/121:39:551
2616463993129,1cyclictest0-21swapper/320:42:583
4577091300,9ptp4l441ktimers/323:09:563
2616463993028,1cyclictest0-21swapper/323:54:593
261646399300,29cyclictest0-21swapper/322:59:003
2616462993027,2cyclictest0-21swapper/223:35:132
2616462993027,2cyclictest0-21swapper/222:45:122
2616462993027,2cyclictest0-21swapper/222:05:592
261646299300,2cyclictest0-21swapper/220:15:112
261646299300,28cyclictest0-21swapper/222:35:122
4577091290,7ptp4l441ktimers/322:40:013
2616463992927,1cyclictest0-21swapper/323:33:593
2616463992927,1cyclictest0-21swapper/321:20:123
2616463992927,1cyclictest0-21swapper/321:00:133
2616463992927,1cyclictest0-21swapper/319:50:113
2616463992926,2cyclictest0-21swapper/300:05:023
2616463992924,4cyclictest2663032-21turbostat21:39:553
261646399290,28cyclictest0-21swapper/323:20:103
261646399290,1cyclictest0-21swapper/322:05:133
261646399290,1cyclictest0-21swapper/320:45:113
2616462992926,2cyclictest0-21swapper/222:50:122
261646299290,28cyclictest0-21swapper/223:25:112
261646299290,27cyclictest0-21swapper/223:35:012
261646299290,27cyclictest0-21swapper/222:10:032
261646299290,27cyclictest0-21swapper/221:40:112
261646299290,27cyclictest0-21swapper/221:15:122
261646299290,27cyclictest0-21swapper/219:35:012
261646299290,27cyclictest0-21swapper/200:10:592
261646299290,1cyclictest0-21swapper/200:15:132
4577091280,7ptp4l61490irq/134-eno1-TxRx-020:25:003
4577091280,7ptp4l61490irq/134-eno1-TxRx-020:20:013
4577091280,7ptp4l441ktimers/321:49:593
4577091280,7ptp4l441ktimers/321:49:593
2616463992826,1cyclictest0-21swapper/321:52:003
2616463992826,1cyclictest0-21swapper/321:10:013
2616463992826,1cyclictest0-21swapper/320:10:133
2616463992825,2cyclictest0-21swapper/320:30:143
261646399280,2cyclictest0-21swapper/323:55:123
261646399280,28cyclictest0-21swapper/320:00:133
261646399280,26cyclictest0-21swapper/323:35:033
261646399280,26cyclictest0-21swapper/323:10:123
261646399280,26cyclictest0-21swapper/320:55:123
261646399280,26cyclictest0-21swapper/320:55:123
2616462992825,2cyclictest0-21swapper/223:43:002
2616462992825,2cyclictest0-21swapper/219:30:142
261646299280,26cyclictest0-21swapper/222:24:592
261646299280,26cyclictest0-21swapper/222:15:032
261646299280,26cyclictest0-21swapper/221:27:592
261646299280,26cyclictest0-21swapper/220:51:592
261646299280,26cyclictest0-21swapper/220:40:132
4577091270,6ptp4l61490irq/134-eno1-TxRx-021:30:003
4577091270,6ptp4l441ktimers/321:45:013
4577091270,6ptp4l441ktimers/300:29:553
4577091270,5ptp4l441ktimers/320:40:013
261646399270,26cyclictest2718529-21turbostat00:25:003
261646399270,26cyclictest0-21swapper/321:16:593
2616462992724,2cyclictest0-21swapper/221:45:132
2616462992724,2cyclictest0-21swapper/221:45:122
2616462992724,2cyclictest0-21swapper/221:30:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:00:003
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:55:013
4577091260,6ptp4l441ktimers/320:10:003
4577091260,5ptp4l441ktimers/323:30:013
261646399260,1cyclictest0-21swapper/319:36:593
261646299260,24cyclictest0-21swapper/219:10:132
261646299260,19cyclictest0-21swapper/219:59:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-022:54:553
4577091250,5ptp4l441ktimers/323:19:563
4577091250,5ptp4l441ktimers/322:49:553
2616463992523,1cyclictest0-21swapper/319:34:593
261646399250,24cyclictest0-21swapper/300:35:593
261646399250,24cyclictest0-21swapper/300:35:593
2616462992522,2cyclictest0-21swapper/222:59:002
261646299250,2cyclictest0-21swapper/221:09:552
261646299250,2cyclictest0-21swapper/219:18:002
261646399240,1cyclictest0-21swapper/319:20:133
2616462992422,1cyclictest0-21swapper/221:55:002
2616462992422,1cyclictest0-21swapper/221:23:592
2616462992422,1cyclictest0-21swapper/200:10:012
2616462992421,2cyclictest0-21swapper/220:35:132
4577091230,4ptp4l61490irq/134-eno1-TxRx-000:19:553
2616462992320,2cyclictest0-21swapper/222:26:592
2616462992219,2cyclictest0-21swapper/223:10:592
2616462992219,2cyclictest0-21swapper/219:42:592
2616462992119,1cyclictest0-21swapper/220:33:592
2616462992118,2cyclictest0-21swapper/220:05:002
2616462991815,2cyclictest0-21swapper/221:03:592
2616462991815,2cyclictest0-21swapper/200:33:592
2616457991814,3cyclictest0-21swapper/019:10:020
2616462991714,2cyclictest0-21swapper/223:59:562
2616462991411,2cyclictest0-21swapper/223:00:122
2616462991311,1cyclictest0-21swapper/219:51:582
261646299118,2cyclictest0-21swapper/223:46:592
26164629941,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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