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2026-08-01 - 03:47
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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 Sat Aug 01, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
292016599144114,15cyclictest1213033-21systemd-journal22:15:000
292016599141130,8cyclictest3003185-21latency_hist23:25:000
292016599139128,8cyclictest2924907-21latency_hist19:25:010
292016599139127,9cyclictest3022882-21latency_hist00:30:010
292016599139127,9cyclictest2963365-21latency_hist21:25:020
292016699134124,7cyclictest2983554-21kworker/u8:0+flush-179:023:00:011
292016599127117,7cyclictest2969730-21latency_hist21:45:020
292016699121111,7cyclictest3005032-21latency_hist23:30:011
292016599117101,13cyclictest2974816-21latency_hist22:00:020
292016599115104,7cyclictest2968133-21latency_hist21:40:010
292016699114105,6cyclictest2932860-21latency_hist19:50:001
292016699114103,7cyclictest2937642-21latency_hist20:05:011
292016599114107,4cyclictest2983554-21kworker/u8:0+flush-179:023:10:250
292016599114106,6cyclictest3021268-21kworker/u8:1+events_unbound00:30:240
292016699112100,10cyclictest2972911-21apt-get21:54:251
292016699110100,7cyclictest2931274-21latency_hist19:45:011
29201669910682,21cyclictest2969774-21kworker/u8:0+events_unbound22:05:011
29201669910591,11cyclictest1213033-21systemd-journal00:15:001
29201659910495,7cyclictest2981706-21latency_hist22:20:000
29201659910494,8cyclictest510-21rs:main0
29201669910393,8cyclictest2937896-21apt-get20:05:141
29201659910395,6cyclictest2949025-21/usr/sbin/munin20:40:220
29201669910292,8cyclictest1213033-21systemd-journal22:55:011
29201669910089,8cyclictest1213033-21systemd-journal00:04:001
29201669910068,28cyclictest2918629-21kworker/u8:2+flush-179:019:30:001
2920166999987,8cyclictest2984947-21kworker/u8:3+events_unbound22:35:011
2920166999887,8cyclictest3012985-21latency_hist23:55:011
2920165999884,9cyclictest2936085-21true20:00:010
2920166999684,9cyclictest1213033-21systemd-journal21:29:591
2920165999680,12cyclictest1213033-21systemd-journal21:05:000
2920165999586,7cyclictest2953839-21kworker/u8:2+flush-179:020:55:210
2920165999283,7cyclictest510-21rs:main0
2920165999281,8cyclictest510-21rs:main0
2920165998979,8cyclictest2952475-21apt-get20:50:120
2920166998877,6cyclictest2983554-21kworker/u8:0+flush-179:022:35:161
2920166998775,9cyclictest2983839-21diskstats22:25:141
2920165998674,9cyclictest2944006-21latency_hist20:25:010
2920165998577,5cyclictest2964987-21kworker/u8:1+flush-179:021:50:010
2920166998373,8cyclictest2962036-21apt-get21:20:111
2920165998376,5cyclictest3005269-21kworker/u8:2+flush-179:023:45:220
2920165998277,3cyclictest2958570-21kworker/u8:1+flush-179:021:10:160
2920165998276,5cyclictest3011446-21kworker/u8:3+events_unbound00:15:250
2920165998275,5cyclictest2983554-21kworker/u8:0+events_unbound22:35:230
2920165998273,6cyclictest2926493-21latency_hist19:30:010
2920165998271,9cyclictest1213033-21systemd-journal19:54:590
2920165998268,11cyclictest1213033-21systemd-journal19:40:000
2920165998073,4cyclictest2953839-21kworker/u8:2+events_unbound21:30:180
2920165998066,11cyclictest1213033-21systemd-journal23:30:230
2920166997971,5cyclictest2978253-21latency_hist22:10:021
2920165997970,7cyclictest2960206-21kworker/u8:3+flush-179:021:25:210
2920166997872,4cyclictest2277666-21kworker/u8:1+flush-179:019:14:551
2920166997870,6cyclictest2978508-21apt-get22:10:111
2920166997868,8cyclictest1213033-21systemd-journal21:40:011
2920165997868,7cyclictest2998401-21latency_hist23:10:010
2920166997762,12cyclictest1213033-21systemd-journal22:50:001
2920165997768,7cyclictest2931252-21kworker/u8:0+flush-179:019:45:170
2920165997767,8cyclictest3014614-40mandb00:00:010
2920165997767,6cyclictest2969774-21kworker/u8:0+flush-179:022:00:160
2920165997765,10cyclictest2991530-21apt-get22:50:000
2920165997671,3cyclictest3001594-21latency_hist23:20:020
2920166997559,13cyclictest2960206-21kworker/u8:3+flush-179:021:35:001
2920165997458,13cyclictest1213033-21systemd-journal19:15:000
2920165997368,4cyclictest2931318-21kworker/u8:1+flush-179:020:25:220
2920165997363,7cyclictest2948786-21latency_hist20:40:020
2920166997261,8cyclictest2942423-21latency_hist20:20:011
2920165997265,5cyclictest2979892-21kworker/u8:1+events_unbound22:25:130
2920165997265,4cyclictest3014644-21kworker/u8:4+flush-179:000:00:250
2920166997162,7cyclictest3019940-21/usr/sbin/munin00:20:271
2920165997163,6cyclictest3014644-21kworker/u8:4+events_unbound00:10:160
2920165997160,8cyclictest2953839-21kworker/u8:2+events_unbound21:15:210
2920166997064,5cyclictest2918629-21kworker/u8:2+flush-179:019:35:001
2920166997060,8cyclictest3011446-21kworker/u8:3+flush-179:000:20:001
2920165997064,4cyclictest2969774-21kworker/u8:0+flush-179:021:55:010
2920165997062,5cyclictest2926530-21kworker/u8:3+events_unbound20:10:330
2920175996960,7cyclictest2986749-21turbostat22:35:003
2920165996961,6cyclictest2976002-21kworker/u8:2+events_unbound22:20:200
2920165996761,4cyclictest3005009-21kworker/u8:0+events_unbound23:50:240
2920165996761,4cyclictest2926484-21kworker/u8:1+events_unbound19:30:130
2920166996659,4cyclictest2955405-21latency_hist21:00:021
2920166996655,9cyclictest2934682-21/usr/sbin/munin19:55:231
2920165996656,8cyclictest2957254-21apt-get21:05:130
2920166996559,4cyclictest2945236-21kworker/u8:0+flush-179:020:45:191
2920166996558,5cyclictest2973469-21apt-get21:55:121
2920165996556,7cyclictest2983554-21kworker/u8:0+events_unbound22:50:160
2920165996555,7cyclictest2984947-21kworker/u8:3+flush-179:022:30:150
2920166996458,4cyclictest3001568-21kworker/u8:2+flush-179:023:20:201
2920166996455,7cyclictest2964987-21kworker/u8:1+flush-179:021:40:271
2920166996352,8cyclictest1213033-21systemd-journal22:19:591
2920166996251,9cyclictest3010051-21/usr/sbin/munin23:45:171
2920165996257,4cyclictest2983554-21kworker/u8:0+events_unbound22:40:140
2920165996152,7cyclictest2277666-21kworker/u8:1+events_unbound19:15:140
2920165996054,5cyclictest2988373-21kworker/u8:1+flush-179:022:55:220
2920166995953,4cyclictest2931318-21kworker/u8:1+flush-179:020:50:161
2920166995949,8cyclictest287487-21cupsd00:00:011
2920165995953,5cyclictest2931318-21kworker/u8:1+flush-179:020:09:180
2920166995751,4cyclictest2991655-21kworker/u8:3+flush-179:023:15:221
2920166995648,5cyclictest2960155-21kworker/u8:0+flush-179:021:15:241
2920166995549,4cyclictest3005009-21kworker/u8:0+flush-179:023:40:241
2920165995552,2cyclictest3011446-21kworker/u8:3+events_unbound00:20:190
2920166995446,6cyclictest3011446-21kworker/u8:3+flush-179:000:25:171
2920166995445,6cyclictest2945236-21kworker/u8:0+flush-179:021:05:211
2920166995344,7cyclictest2926530-21kworker/u8:3+flush-179:020:20:201
292016699530,52cyclictest714-21Xorg23:33:591
2920165995348,4cyclictest2991655-21kworker/u8:3+flush-179:023:25:250
2920170995250,1cyclictest0-21swapper/223:29:592
2920166995247,4cyclictest3021268-21kworker/u8:1+flush-179:000:35:011
2920166995245,5cyclictest2945236-21kworker/u8:0+flush-179:021:00:221
2920166995244,6cyclictest2983554-21kworker/u8:0+flush-179:023:00:141
2920166995020,21cyclictest0-21swapper/123:40:011
2920165995044,5cyclictest3021268-21kworker/u8:1+flush-179:000:35:210
2920166994944,4cyclictest3014644-21kworker/u8:4+flush-179:000:09:441
2920166994942,6cyclictest2983554-21kworker/u8:0+flush-179:022:45:001
2920165994942,5cyclictest3005009-21kworker/u8:0+flush-179:023:40:120
4577091480,12ptp4l61490irq/134-eno1-TxRx-019:09:563
2920165994844,3cyclictest2926530-21kworker/u8:3+flush-179:020:00:160
2920165994841,5cyclictest2983554-21kworker/u8:0+flush-179:023:00:170
2920165994837,9cyclictest2945849-21apt-get20:30:110
2920166994737,7cyclictest1213033-21systemd-journal20:35:231
2920166994637,7cyclictest2923314-21latency_hist19:20:011
292016699457,24cyclictest3025225-21cat00:35:171
2920166994542,2cyclictest3000024-21systemd-run23:15:011
292017599440,42cyclictest2976681-21turbostat22:05:003
2920166994421,20cyclictest1213033-21systemd-journal19:35:181
2920165994439,4cyclictest2976002-21kworker/u8:2+events_unbound22:05:230
2920170994340,2cyclictest0-21swapper/222:53:002
2920166994328,13cyclictest321-21hwrng21:45:231
292016699427,21cyclictest2924961-21sed19:25:001
2920166994134,4cyclictest2960171-21latency_hist21:15:001
2920166994133,6cyclictest2926530-21kworker/u8:3+events_unbound20:10:211
2920165994136,4cyclictest3014644-21kworker/u8:4+flush-179:000:09:560
2920165994032,6cyclictest2945236-21kworker/u8:0+flush-179:020:45:230
292016699391,23cyclictest714-21Xorg23:08:591
2920175993832,4cyclictest3008230-21turbostat23:40:013
292017599380,36cyclictest0-21swapper/323:30:583
2920170993835,2cyclictest0-21swapper/219:31:592
292017099380,36cyclictest0-21swapper/223:00:582
292017099380,35cyclictest0-21swapper/220:59:562
292017099380,35cyclictest0-21swapper/200:20:002
2920166993814,23cyclictest2949837-21ntp_states20:40:221
292016699381,22cyclictest714-21Xorg20:33:591
292016699380,23cyclictest2944547-21diskstats20:25:161
2920170993734,2cyclictest0-21swapper/221:54:552
2920170993734,2cyclictest0-21swapper/220:42:592
2920170993734,2cyclictest0-21swapper/219:41:582
2920170993734,2cyclictest0-21swapper/219:18:592
2920170993733,2cyclictest0-21swapper/221:14:592
292017099370,35cyclictest0-21swapper/222:33:002
292017099370,35cyclictest0-21swapper/219:50:002
2920166993735,1cyclictest2926530-21kworker/u8:3+flush-179:019:50:271
4577091360,6ptp4l441ktimers/319:35:003
2920175993634,1cyclictest0-21swapper/321:27:583
2920175993634,1cyclictest0-21swapper/321:19:553
2920175993634,1cyclictest0-21swapper/320:45:593
2920175993634,1cyclictest0-21swapper/319:37:583
2920175993634,1cyclictest0-21swapper/319:21:003
292017599360,35cyclictest0-21swapper/320:53:003
292017599360,35cyclictest0-21swapper/300:13:593
2920170993633,2cyclictest0-21swapper/219:54:592
2920175993533,1cyclictest0-21swapper/322:13:593
2920175993533,1cyclictest0-21swapper/321:23:003
2920175993533,1cyclictest0-21swapper/319:27:593
292017599350,1cyclictest0-21swapper/321:47:583
2920170993532,2cyclictest0-21swapper/222:03:002
2920170993532,2cyclictest0-21swapper/220:19:552
292017099350,1cyclictest0-21swapper/200:34:592
2920175993432,1cyclictest0-21swapper/323:49:553
2920175993432,1cyclictest0-21swapper/322:48:003
2920175993432,1cyclictest0-21swapper/322:22:593
2920175993432,1cyclictest0-21swapper/319:59:553
2920170993431,2cyclictest0-21swapper/223:51:592
2920175993331,1cyclictest0-21swapper/320:28:583
2920170993330,2cyclictest0-21swapper/223:48:592
2920170993330,2cyclictest0-21swapper/200:37:592
2920175993230,1cyclictest0-21swapper/321:08:003
2920175993230,1cyclictest0-21swapper/319:44:553
2920170993229,2cyclictest0-21swapper/200:27:592
292017099320,29cyclictest0-21swapper/223:25:002
2920166993228,2cyclictest714-21Xorg22:25:001
4577091310,7ptp4l441ktimers/323:15:003
2920170993128,2cyclictest0-21swapper/223:19:552
2920170993128,2cyclictest0-21swapper/219:29:552
292017099310,1cyclictest0-21swapper/221:04:592
4577091300,7ptp4l61490irq/134-eno1-TxRx-000:35:003
4577091300,6ptp4l61490irq/134-eno1-TxRx-000:10:003
2920175993028,1cyclictest0-21swapper/322:57:593
2920175993028,1cyclictest0-21swapper/300:24:553
2920170993028,1cyclictest0-21swapper/222:39:592
2920170993027,2cyclictest0-21swapper/222:48:592
2920170993027,2cyclictest0-21swapper/221:45:592
2920170993027,2cyclictest0-21swapper/219:15:002
292017099300,2cyclictest0-21swapper/223:10:142
292017099300,28cyclictest0-21swapper/219:55:132
4577091290,7ptp4l61490irq/134-eno1-TxRx-022:39:563
4577091290,7ptp4l61490irq/134-eno1-TxRx-022:10:003
4577091290,7ptp4l441ktimers/321:40:013
4577091290,7ptp4l441ktimers/300:30:013
4577091290,6ptp4l61490irq/134-eno1-TxRx-023:54:553
4577091290,5ptp4l61490irq/134-eno1-TxRx-023:45:003
4577091290,5ptp4l61490irq/134-eno1-TxRx-023:25:003
2920175992927,1cyclictest0-21swapper/321:55:143
2920175992927,1cyclictest0-21swapper/319:54:553
2920175992927,1cyclictest0-21swapper/300:00:133
2920175992926,2cyclictest0-21swapper/321:55:023
292017599290,28cyclictest0-21swapper/322:50:133
292017599290,27cyclictest0-21swapper/322:40:133
292017599290,27cyclictest0-21swapper/321:30:123
292017599290,27cyclictest0-21swapper/320:30:133
292017599290,27cyclictest0-21swapper/320:20:103
2920170992926,2cyclictest0-21swapper/222:00:022
292017099290,27cyclictest0-21swapper/223:40:132
292017099290,27cyclictest0-21swapper/223:35:132
292017099290,27cyclictest0-21swapper/222:25:122
292017099290,27cyclictest0-21swapper/200:10:092
4577091280,6ptp4l441ktimers/321:45:013
4577091280,6ptp4l441ktimers/300:00:003
2920175992826,1cyclictest4577091ptp4l21:00:173
2920175992826,1cyclictest0-21swapper/323:25:013
2920175992826,1cyclictest0-21swapper/319:10:133
2920175992825,2cyclictest0-21swapper/323:15:153
292017599280,2cyclictest0-21swapper/322:15:013
292017599280,26cyclictest0-21swapper/323:05:133
292017599280,26cyclictest0-21swapper/320:10:203
292017599280,26cyclictest0-21swapper/300:35:123
2920170992826,1cyclictest0-21swapper/221:19:592
2920170992825,2cyclictest0-21swapper/223:05:132
2920170992825,2cyclictest0-21swapper/222:40:112
2920170992825,2cyclictest0-21swapper/221:30:132
2920170992825,2cyclictest0-21swapper/220:52:002
2920170992825,2cyclictest0-21swapper/220:26:592
2920170992825,2cyclictest0-21swapper/220:10:192
292017099280,2cyclictest0-21swapper/222:55:022
292017099280,2cyclictest0-21swapper/221:20:122
292017099280,26cyclictest0-21swapper/220:46:582
4577091270,5ptp4l441ktimers/323:05:013
4577091270,5ptp4l441ktimers/322:30:013
4577091270,4ptp4l441ktimers/300:20:013
292017599270,2cyclictest2960179-21turbostat21:14:593
292017599270,26cyclictest0-21swapper/320:55:583
292017599270,26cyclictest0-21swapper/320:39:593
292017599270,26cyclictest0-21swapper/320:20:003
2920170992724,2cyclictest0-21swapper/220:20:092
292016699277,18cyclictest2920081-21latency_hist19:10:011
4577091260,5ptp4l441ktimers/320:09:563
4577091260,4ptp4l441ktimers/319:20:013
2920170992623,2cyclictest0-21swapper/221:41:592
2920170992623,2cyclictest0-21swapper/200:20:592
292017099260,24cyclictest0-21swapper/222:24:592
292017099260,24cyclictest0-21swapper/200:03:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-019:49:563
4577091250,5ptp4l441ktimers/320:04:553
2920170992522,2cyclictest0-21swapper/222:15:032
4577091240,4ptp4l61490irq/134-eno1-TxRx-020:44:553
2920170992422,1cyclictest0-21swapper/223:34:592
2920170992421,2cyclictest0-21swapper/222:10:592
2920170992421,2cyclictest0-21swapper/220:36:002
2920170992421,2cyclictest0-21swapper/220:33:582
231999240,11rtkit-daemon2919075-21sshd19:05:190
2920170992321,1cyclictest0-21swapper/220:09:592
2920170992320,2cyclictest0-21swapper/219:23:592
2920170992220,1cyclictest0-21swapper/223:56:592
2920170992219,2cyclictest0-21swapper/200:05:592
2920170991714,2cyclictest0-21swapper/221:25:592
2920170991512,2cyclictest0-21swapper/221:06:592
2920170991512,2cyclictest0-21swapper/219:36:002
29201709985,2cyclictest0-21swapper/222:08:112
29201709975,1cyclictest0-21swapper/220:03:592
29201709963,2cyclictest0-21swapper/221:35:562
29201709930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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