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2026-05-16 - 23:27
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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 May 16, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33096899120108,9cyclictest350021-21apt-get08:10:041
3309689911296,12cyclictest1213033-21systemd-journal08:40:001
3309689910194,5cyclictest427477-21apt-get12:08:551
330963999993,4cyclictest318414-21kworker/u8:2+events_unbound07:20:010
330963999686,7cyclictest429104-21latency_hist12:15:010
330963999274,15cyclictest393522-21latency_hist10:25:010
330968998877,8cyclictest1213033-21systemd-journal12:40:011
330963998781,4cyclictest408139-21kworker/u8:0+events_unbound11:40:250
330968998376,6cyclictest362982-21kworker/u8:0+flush-179:009:00:001
330968998175,4cyclictest363261-21apt-get08:50:121
330968998171,8cyclictest1213033-21systemd-journal07:55:161
330963998171,7cyclictest361656-21/usr/sbin/munin08:45:230
330968998072,6cyclictest377308-21kworker/u8:2+flush-179:010:00:251
330963997973,5cyclictest366163-21kworker/u8:1+flush-179:009:29:550
330963997970,6cyclictest385568-21latency_hist10:00:010
330963997772,4cyclictest411334-21kworker/u8:1+flush-179:011:30:000
330963997671,4cyclictest354534-21kworker/u8:1+flush-179:008:34:550
330963997663,11cyclictest1213033-21systemd-journal08:25:010
330968997559,15cyclictest411334-21kworker/u8:1+flush-179:011:30:251
330963997465,6cyclictest430702-21latency_hist12:20:020
330968997358,12cyclictest377346-21apt-get09:35:001
330963997363,7cyclictest403559-21/usr/sbin/munin10:55:240
330963997165,4cyclictest334114-21kworker/u8:1+flush-179:007:20:140
330963997163,6cyclictest425880-21latency_hist12:05:010
330963997163,6cyclictest1213033-21systemd-journal10:10:000
330968997038,22cyclictest404918-21latency_hist11:00:001
330963997063,5cyclictest334038-21kworker/u8:0+flush-179:008:10:170
330963997059,9cyclictest379456-21apt-get09:40:120
330963997057,9cyclictest396698-21latency_hist10:35:010
330968996861,5cyclictest369360-21kworker/u8:0+flush-179:009:40:251
330963996856,9cyclictest382374-21latency_hist09:50:010
330968996661,3cyclictest366163-21kworker/u8:1+events_unbound09:25:231
330968996653,11cyclictest1213033-21systemd-journal09:47:551
330963996659,5cyclictest432555-21apt-get12:25:120
330963996656,8cyclictest421353-21apt-get11:50:130
33097399650,62cyclictest0-21swapper/308:53:593
330968996454,8cyclictest422920-21/usr/sbin/munin11:55:231
330963996457,5cyclictest335922-21apt-get07:25:120
330963996455,7cyclictest400387-21kworker/u8:2+flush-179:011:20:220
330968996354,7cyclictest429358-21apt-get12:15:121
330968996352,9cyclictest400406-21apt-get10:45:121
330968996345,15cyclictest318414-21kworker/u8:2+flush-179:007:10:251
330963996354,6cyclictest387155-21latency_hist10:05:010
33096399631,60cyclictest1-21systemd08:53:540
330963996252,8cyclictest401772-21kworker/u8:3+flush-179:011:04:590
330963996251,8cyclictest350157-21kworker/u8:3+flush-179:008:35:220
330963996157,3cyclictest382363-21kworker/u8:1+flush-179:010:19:560
330963996151,7cyclictest398600-21kworker/u8:0+flush-179:010:50:220
330963996150,9cyclictest366456-21apt-get09:00:120
330968996055,4cyclictest408139-21kworker/u8:0+flush-179:012:14:561
330963996043,9cyclictest354534-21kworker/u8:1+events_unbound08:40:200
330963995948,9cyclictest369629-21apt-get09:10:120
330968995850,6cyclictest1213033-21systemd-journal07:19:561
330963995855,2cyclictest0-21swapper/011:32:590
330963995854,3cyclictest396506-21kworker/u8:3+flush-179:010:36:550
330963995850,6cyclictest433882-21kworker/u8:0+events_unbound12:35:240
330968995749,6cyclictest1213033-21systemd-journal08:49:541
330968995747,8cyclictest342310-21apt-get07:45:131
330963995750,5cyclictest431258-21diskstats12:20:160
330963995747,8cyclictest401737-21latency_hist10:50:010
330963995742,11cyclictest1213033-21systemd-journal07:59:590
330968995631,23cyclictest0-21swapper/110:00:001
330963995651,4cyclictest385601-21kworker/u8:0+flush-179:010:14:560
330963995651,4cyclictest334038-21kworker/u8:0+flush-179:008:19:550
330963995649,5cyclictest408139-21kworker/u8:0+flush-179:011:45:030
330963995646,6cyclictest340514-21kworker/u8:2+flush-179:007:50:210
330963995645,9cyclictest372826-21apt-get09:20:110
330968995546,7cyclictest417922-21apt-get11:40:121
330968995544,8cyclictest1213033-21systemd-journal10:35:021
330968995537,17cyclictest425918-21systemd-run12:05:011
330963995550,3cyclictest382363-21kworker/u8:1+events_unbound10:25:120
330963995546,7cyclictest378136-21diskstats09:35:170
330968995445,7cyclictest398821-21apt-get10:40:121
330963995445,7cyclictest355285-21/usr/sbin/munin08:25:230
330963995443,8cyclictest346070-21kworker/u8:1+flush-179:008:10:000
330963995347,5cyclictest334038-21kworker/u8:0+flush-179:007:45:260
330963995345,6cyclictest334038-21kworker/u8:0+events_unbound08:00:270
330963995240,10cyclictest368043-21apt-get09:05:130
330968995141,7cyclictest379197-21latency_hist09:40:011
330969995047,2cyclictest0-21swapper/208:46:002
330968995040,7cyclictest430760-21kworker/u8:3+flush-179:012:20:161
330968995037,12cyclictest417702-21kworker/u8:3+flush-179:011:49:561
33096899500,7cyclictest411558-21http11:20:141
4577091490,13ptp4l441ktimers/307:10:013
330968994942,6cyclictest400387-21kworker/u8:2+flush-179:011:50:221
330968994941,6cyclictest392191-21apt-get10:20:121
330963994942,5cyclictest1-21systemd12:10:010
330963994939,8cyclictest416296-21/usr/sbin/munin11:35:240
330963994928,18cyclictest1213033-21systemd-journal10:44:550
330968994840,6cyclictest1213033-21systemd-journal07:36:551
330963994840,6cyclictest430685-21kworker/u8:1+flush-179:012:30:130
33096399481,44cyclictest377335-21munin-run09:35:000
330963994742,4cyclictest377308-21kworker/u8:2+flush-179:009:50:170
330963994735,8cyclictest334038-21kworker/u8:0+events_unbound07:40:190
330968994641,4cyclictest408139-21kworker/u8:0+flush-179:011:10:141
330968994638,6cyclictest353699-21/usr/sbin/munin08:20:151
33096899456,37cyclictest396508-21timerwakeupswit10:30:261
330968994538,5cyclictest337513-21apt-get07:30:121
33096399450,44cyclictest0-21swapper/011:07:590
330968994438,5cyclictest355054-21turbostat08:29:541
330968994435,7cyclictest350157-21kworker/u8:3+flush-179:008:20:021
330968994433,9cyclictest371502-21diskstats09:15:161
330968994338,3cyclictest390328-21munin-run10:15:011
33096899431,3cyclictest390581-21apt-get10:15:131
330963994336,5cyclictest411303-21munin-plugin-st11:20:010
330963994332,8cyclictest1213033-21systemd-journal07:40:000
33097399420,41cyclictest0-21swapper/308:20:593
33096999420,2cyclictest0-21swapper/211:11:002
330968994235,5cyclictest334114-21kworker/u8:1+flush-179:007:20:221
330963994135,4cyclictest371215-21apt-get09:15:130
330963994129,7cyclictest337513-21apt-get07:30:140
330973994038,1cyclictest0-21swapper/311:11:003
33097399400,5cyclictest388749-21turbostat10:10:003
33097399400,4cyclictest363019-21turbostat08:50:003
33097399400,39cyclictest408106-21turbostat11:10:003
33097399400,39cyclictest0-21swapper/309:29:593
33097399400,38cyclictest356650-21turbostat08:30:003
330968994035,4cyclictest346070-21kworker/u8:1+flush-179:008:00:251
330968994024,15cyclictest350201-21apt-key08:10:011
33096399401,2cyclictest714-21Xorg07:12:000
33097399390,38cyclictest414482-21turbostat11:30:003
330969993936,2cyclictest0-21swapper/210:16:592
330968993921,16cyclictest1213033-21systemd-journal11:29:551
33096899391,2cyclictest714-21Xorg07:53:591
330973993833,4cyclictest406524-21turbostat11:05:003
330969993835,2cyclictest0-21swapper/210:48:592
330969993834,2cyclictest0-21swapper/212:37:592
330969993834,2cyclictest0-21swapper/208:12:002
33096999380,36cyclictest0-21swapper/209:09:552
330968993834,3cyclictest358261-21systemd-run08:35:011
330973993735,1cyclictest0-21swapper/307:19:553
330973993732,4cyclictest437098-21turbostat12:40:013
33097399370,3cyclictest340471-21turbostat07:40:003
33097399370,36cyclictest0-21swapper/310:56:003
33097399370,36cyclictest0-21swapper/308:30:593
33097399370,36cyclictest0-21swapper/307:14:003
330969993734,2cyclictest0-21swapper/210:58:592
330969993733,2cyclictest0-21swapper/211:07:592
330969993733,2cyclictest0-21swapper/208:18:582
33096999370,35cyclictest0-21swapper/212:12:592
33096999370,35cyclictest0-21swapper/211:49:582
33096999370,35cyclictest0-21swapper/211:21:592
33096999370,35cyclictest0-21swapper/210:44:562
33096999370,35cyclictest0-21swapper/210:34:592
33096999370,35cyclictest0-21swapper/209:25:002
330968993719,16cyclictest714-21Xorg11:00:591
330963993726,8cyclictest1213033-21systemd-journal11:59:590
330963993724,10cyclictest362982-21kworker/u8:0+flush-179:008:55:230
330973993634,1cyclictest0-21swapper/311:49:593
330973993634,1cyclictest0-21swapper/309:24:593
330973993634,1cyclictest0-21swapper/309:09:553
330973993630,5cyclictest393536-21turbostat10:25:003
33097399360,35cyclictest0-21swapper/312:29:553
33097399360,35cyclictest0-21swapper/310:28:003
33097399360,35cyclictest0-21swapper/310:11:593
33097399360,35cyclictest0-21swapper/308:43:003
33097399360,35cyclictest0-21swapper/307:23:583
33097399360,1cyclictest0-21swapper/309:14:553
330969993634,1cyclictest0-21swapper/209:14:552
330969993633,2cyclictest0-21swapper/211:32:592
330969993633,2cyclictest0-21swapper/209:47:592
330969993633,2cyclictest0-21swapper/208:32:582
330969993633,1cyclictest0-21swapper/207:45:002
330969993632,2cyclictest0-21swapper/212:27:592
330969993632,2cyclictest0-21swapper/210:26:592
330969993632,2cyclictest0-21swapper/210:09:552
330969993632,2cyclictest0-21swapper/209:18:592
33096999360,1cyclictest0-21swapper/210:54:582
33096999360,1cyclictest0-21swapper/207:37:592
330968993629,5cyclictest433882-21kworker/u8:0+flush-179:012:35:011
330968993616,19cyclictest387785-21grep10:05:181
330968993616,19cyclictest383972-21cron09:55:001
330973993533,1cyclictest0-21swapper/311:21:583
330973993533,1cyclictest0-21swapper/310:54:593
330973993533,1cyclictest0-21swapper/310:44:563
330973993533,1cyclictest0-21swapper/310:34:553
330969993533,1cyclictest0-21swapper/208:55:002
330969993532,2cyclictest0-21swapper/210:02:592
330969993532,2cyclictest0-21swapper/208:01:592
33096899353,29cyclictest417665-21latency_hist11:40:011
330968993526,8cyclictest433902-21munin-run12:29:591
330968993518,16cyclictest0-21swapper/110:25:121
330968993514,19cyclictest331058-21latency_hist07:10:021
33096899351,2cyclictest359791-1kworker/1:1H-kblockd09:25:011
33096899350,5cyclictest714-21Xorg07:26:591
330963993529,4cyclictest331008-21latency_hist07:10:020
330973993432,1cyclictest0-21swapper/311:50:593
330973993432,1cyclictest0-21swapper/311:17:593
330973993429,4cyclictest430706-21turbostat12:20:003
330969993431,2cyclictest0-21swapper/212:30:592
330969993431,2cyclictest0-21swapper/210:14:002
330969993431,2cyclictest0-21swapper/210:00:012
330969993430,2cyclictest0-21swapper/209:02:582
330969993430,2cyclictest0-21swapper/207:47:002
330969993430,2cyclictest0-21swapper/207:14:552
330968993427,4cyclictest409944-21apt-get11:15:121
330973993332,1cyclictest0-21swapper/311:43:593
330973993332,1cyclictest0-21swapper/309:52:003
330973993332,1cyclictest0-21swapper/308:57:003
330973993331,1cyclictest0-21swapper/312:12:583
330973993331,1cyclictest0-21swapper/310:16:593
330973993328,4cyclictest401745-21turbostat10:50:003
330969993330,2cyclictest0-21swapper/208:21:592
330969993330,2cyclictest0-21swapper/207:18:002
330969993329,2cyclictest0-21swapper/211:39:552
330968993327,5cyclictest398600-21kworker/u8:0+flush-179:010:50:211
330968993317,15cyclictest0-21swapper/109:02:581
33096899331,28cyclictest0-21swapper/107:40:121
330973993230,1cyclictest0-21swapper/311:56:593
330973993227,4cyclictest342063-21turbostat07:45:013
330973993226,4cyclictest385559-21turbostat10:00:003
330968993229,2cyclictest714-21Xorg08:41:591
330968993228,3cyclictest484-21dbus-daemon09:10:011
33096899321,26cyclictest407510-21ntp_192.168.11411:05:211
330973993130,1cyclictest0-21swapper/311:34:593
330969993128,2cyclictest0-21swapper/210:21:592
330973993028,1cyclictest0-21swapper/308:11:593
330973993027,2cyclictest0-21swapper/309:47:593
330973993027,2cyclictest0-21swapper/308:18:583
330969993028,1cyclictest0-21swapper/209:34:592
33096899303,5cyclictest714-21Xorg09:11:001
4577091290,8ptp4l441ktimers/312:25:003
4577091290,7ptp4l441ktimers/308:40:003
330973992924,4cyclictest435493-21turbostat12:35:003
33097399290,27cyclictest0-21swapper/310:00:143
330969992927,1cyclictest0-21swapper/211:55:002
330969992926,2cyclictest0-21swapper/209:35:142
330969992926,2cyclictest0-21swapper/207:25:122
33096999290,27cyclictest0-21swapper/212:24:592
33096999290,27cyclictest0-21swapper/212:05:142
33096999290,27cyclictest0-21swapper/211:25:122
33096999290,27cyclictest0-21swapper/211:01:592
33096999290,27cyclictest0-21swapper/209:50:142
4577091280,7ptp4l441ktimers/312:09:563
4577091280,6ptp4l441ktimers/312:05:013
4577091280,6ptp4l441ktimers/307:35:003
330973992826,1cyclictest0-21swapper/309:19:003
330973992826,1cyclictest0-21swapper/308:02:003
33097399280,27cyclictest0-21swapper/309:35:023
330969992825,2cyclictest0-21swapper/211:40:132
33096999280,26cyclictest0-21swapper/208:05:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:30:003
4577091270,6ptp4l441ktimers/309:45:013
4577091270,6ptp4l441ktimers/309:34:563
4577091270,6ptp4l441ktimers/309:05:003
4577091270,6ptp4l441ktimers/308:10:003
4577091270,6ptp4l441ktimers/308:00:003
330963992724,2cyclictest0-21swapper/011:13:000
330973992624,1cyclictest0-21swapper/311:39:543
330973992624,1cyclictest0-21swapper/307:47:003
330969992623,2cyclictest0-21swapper/212:03:582
330969992623,2cyclictest0-21swapper/211:57:592
330969992623,2cyclictest0-21swapper/209:26:592
330969992622,2cyclictest0-21swapper/207:21:582
33096999260,2cyclictest0-21swapper/207:52:592
330973992523,1cyclictest0-21swapper/307:52:583
33097399250,24cyclictest0-21swapper/310:37:593
330969992421,2cyclictest0-21swapper/208:36:592
330969992420,2cyclictest0-21swapper/208:56:592
330969992320,2cyclictest0-21swapper/211:18:592
330969992320,2cyclictest0-21swapper/210:38:592
330969992320,2cyclictest0-21swapper/209:44:592
330969992219,2cyclictest0-21swapper/212:15:582
330969992118,2cyclictest0-21swapper/208:44:552
330969992017,2cyclictest0-21swapper/207:56:592
330969991815,2cyclictest0-21swapper/207:32:002
3309699975,2cyclictest0-21swapper/208:27:082
3309699930,2cyclictest0-21swapper/207:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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