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2026-04-17 - 03:46
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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 Fri Apr 17, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2396101999989,7cyclictest2478434-21latency_hist23:25:000
2396101999284,6cyclictest2473650-21latency_hist23:10:010
2396101998775,10cyclictest1213033-21systemd-journal21:50:000
2396104998172,7cyclictest2457733-21latency_hist22:20:011
2396104998073,5cyclictest2420080-21latency_hist20:25:011
2396101997767,7cyclictest2399341-21kworker/u8:1+flush-179:019:35:000
2396104997669,5cyclictest2468867-21latency_hist22:55:011
2396101997361,9cyclictest2449510-21apt-get21:55:000
2396101996959,7cyclictest2395900-21latency_hist19:10:030
2396101996959,7cyclictest2395900-21latency_hist19:10:030
2396104996860,5cyclictest2459328-21latency_hist22:25:011
2396104996857,8cyclictest1213033-21systemd-journal00:40:001
2396101996861,5cyclictest2496264-21latency_hist00:20:020
2396101996757,6cyclictest1-21systemd00:40:000
2396104996559,5cyclictest2486387-21latency_hist23:50:001
2396101996449,11cyclictest2489891-21kworker/u8:2+flush-179:000:00:110
2396101996449,11cyclictest2489891-21kworker/u8:2+flush-179:000:00:110
2396104996255,5cyclictest2472066-21latency_hist23:05:011
2396104996155,4cyclictest2404143-21kworker/u8:3+flush-179:020:50:011
2396104996153,7cyclictest2428568-21apt-get20:50:001
2396101996129,30cyclictest0-21swapper/022:13:580
2396101996055,4cyclictest2449318-21kworker/u8:2+flush-179:022:00:210
2396101995951,6cyclictest2483219-21latency_hist23:40:010
2396104995848,8cyclictest2420335-21apt-get20:25:101
2396105995552,2cyclictest0-21swapper/220:26:582
2396104995548,5cyclictest2489891-21kworker/u8:2+flush-179:000:00:121
2396104995548,5cyclictest2489891-21kworker/u8:2+flush-179:000:00:111
2396104995546,7cyclictest1213033-21systemd-journal21:25:001
2396101995549,4cyclictest2399341-21kworker/u8:1+events_unbound19:20:010
2396101995548,5cyclictest2432245-21/usr/sbin/munin21:00:210
2396104995445,7cyclictest2407597-21apt-get19:45:131
2396101995443,9cyclictest2423770-21apt-get20:35:120
2396107995351,1cyclictest0-21swapper/320:26:593
2396105995350,2cyclictest0-21swapper/219:14:592
2396105995350,2cyclictest0-21swapper/219:14:582
2396104995340,11cyclictest2435224-21kworker/u8:1+flush-179:021:15:011
2396107995249,2cyclictest0-21swapper/319:14:583
2396107995249,2cyclictest0-21swapper/319:14:583
2396104995244,6cyclictest2484802-21latency_hist23:45:021
2396101995244,6cyclictest2425665-21diskstats20:40:150
2396104995145,3cyclictest2470471-21ls22:59:591
2396104995144,5cyclictest2392946-21kworker/u8:0+flush-179:019:25:001
2396104995139,8cyclictest0-21swapper/119:35:121
2396104995044,5cyclictest1213033-21systemd-journal00:26:221
2396104995044,5cyclictest1213033-21systemd-journal00:26:221
2396101995046,2cyclictest2470461-21munin-run23:00:000
2396101995041,7cyclictest2476844-21latency_hist23:20:010
2396104994942,5cyclictest2412115-21latency_hist20:00:001
239610199494,37cyclictest2412104-21turbostat20:04:540
2396101994941,6cyclictest2435224-21kworker/u8:1+flush-179:021:20:170
2396101994938,8cyclictest2404405-21apt-get19:35:130
4577091480,13ptp4l441ktimers/319:09:563
4577091480,13ptp4l441ktimers/319:09:563
2396104994839,7cyclictest1213033-21systemd-journal22:38:211
2396104994838,8cyclictest908065-21snmpd21:50:141
2396104994838,7cyclictest2487988-21apt-get23:55:031
2396101994841,5cyclictest2480055-21kworker/u8:0+flush-179:023:50:270
2396101994840,6cyclictest2494660-21latency_hist00:15:000
2396101994838,8cyclictest2418749-21apt-get20:20:110
2396107994740,6cyclictest2456144-21turbostat22:14:593
2396104994743,2cyclictest714-21Xorg21:35:591
2396104994740,5cyclictest510-21rs:main1
2396104994738,7cyclictest2426717-21apt-get20:45:001
2396101994743,3cyclictest484-21dbus-daemon21:45:000
2396104994644,1cyclictest714-21Xorg21:48:591
2396104994639,5cyclictest2438361-21latency_hist21:20:011
2396104994635,5cyclictest2478689-21apt-get23:25:141
239610199469,33cyclictest0-21swapper/023:55:020
2396101994635,9cyclictest2453216-21apt-get22:05:110
2396104994439,3cyclictest2452992-21systemd-run22:05:001
2396104994437,5cyclictest2497856-21latency_hist00:25:011
239610199441,40cyclictest2475241-21dump-pmu-power23:15:010
239610199439,31cyclictest0-21swapper/023:25:140
2396101994338,4cyclictest0-21swapper/021:35:590
2396101994335,6cyclictest2415535-21/usr/sbin/munin20:10:200
2396101994334,7cyclictest2430400-21latency_hist20:55:010
2396101994334,7cyclictest1213033-21systemd-journal21:35:010
239610199431,39cyclictest714-21Xorg21:55:590
2396105994240,1cyclictest0-21swapper/222:15:002
2396104994235,5cyclictest2489891-21kworker/u8:2+flush-179:000:15:221
239610199421,4cyclictest2400974-21munin-run19:25:000
239610199421,2cyclictest714-21Xorg19:44:580
2396107994139,1cyclictest0-21swapper/322:20:003
2396105994139,1cyclictest0-21swapper/222:19:592
239610599410,31cyclictest0-21swapper/200:20:592
2396104994136,3cyclictest2406359-21fschecks_count19:40:151
2396104994133,6cyclictest2489891-21kworker/u8:2+flush-179:000:10:231
2396104994133,6cyclictest2488468-21kworker/u8:1+flush-179:000:09:591
239610499411,38cyclictest714-21Xorg21:27:591
239610499411,38cyclictest2475248-21apt23:15:011
239610499410,40cyclictest2472074-21turbostat23:09:551
239610499410,40cyclictest2415311-21turbostat20:14:551
2396101994132,7cyclictest1213033-21systemd-journal00:30:000
2396101994132,7cyclictest1213033-21systemd-journal00:29:590
239610799400,4cyclictest2439973-21turbostat21:25:003
239610799400,38cyclictest0-21swapper/322:01:593
2396104994032,6cyclictest2397777-21latency_hist19:15:021
2396104994032,6cyclictest2397777-21latency_hist19:15:011
239610499401,31cyclictest2465952-21apt-get22:45:131
239610499400,4cyclictest2397782-21turbostat19:19:551
2396101994035,4cyclictest0-21swapper/022:26:590
2396101994032,6cyclictest2428561-21grep20:50:000
2396107993934,4cyclictest2435197-21turbostat21:10:003
239610799390,4cyclictest2465713-21turbostat22:45:013
239610799390,38cyclictest2502641-21turbostat00:40:003
239610799390,38cyclictest2426716-21turbostat20:45:003
2396105993935,2cyclictest0-21swapper/223:46:592
2396105993935,2cyclictest0-21swapper/222:25:592
239610599390,37cyclictest0-21swapper/222:01:592
239610599390,36cyclictest0-21swapper/220:59:552
239610599390,2cyclictest0-21swapper/219:33:592
2396104993935,2cyclictest714-21Xorg22:26:591
2396104993934,4cyclictest2413747-21kworker/u8:0+flush-179:020:10:001
239610499390,2cyclictest714-21Xorg21:34:591
2396101993930,3cyclictest2481612-21munin-run23:35:010
239610199391,35cyclictest1-21systemd22:38:210
2396107993835,2cyclictest0-21swapper/323:47:003
239610799380,37cyclictest0-21swapper/323:20:583
239610799380,37cyclictest0-21swapper/320:02:593
239610599380,36cyclictest0-21swapper/220:02:592
239610599380,35cyclictest0-21swapper/220:15:002
2396104993833,4cyclictest2423547-21systemd-run20:35:001
239610499380,37cyclictest0-21swapper/119:34:561
2396101993835,2cyclictest0-21swapper/000:22:580
2396101993834,3cyclictest2486425-21systemd-run23:50:010
2396101993832,4cyclictest0-21swapper/000:05:580
2396101993830,7cyclictest0-21swapper/021:10:130
239610799370,1cyclictest0-21swapper/320:34:593
239610799370,1cyclictest0-21swapper/300:20:583
2396105993735,1cyclictest0-21swapper/220:09:592
239610599370,35cyclictest0-21swapper/223:20:592
239610599370,35cyclictest0-21swapper/221:15:592
239610599370,2cyclictest0-21swapper/222:43:592
2396104993734,2cyclictest714-21Xorg22:34:001
2396104993733,2cyclictest714-21Xorg21:05:591
2396104993731,4cyclictest2472062-1kworker/1:2H+kblockd23:35:001
239610499371,31cyclictest524-21gmain21:40:131
2396101993733,2cyclictest0-21swapper/021:05:590
239610199371,34cyclictest0-21swapper/022:45:120
239610199370,1cyclictest0-21swapper/021:27:590
2396107993634,1cyclictest0-21swapper/322:25:593
2396107993634,1cyclictest0-21swapper/320:05:593
2396107993631,4cyclictest2473657-21turbostat23:10:013
239610799360,35cyclictest0-21swapper/320:59:553
2396105993633,2cyclictest0-21swapper/223:06:582
239610599360,1cyclictest0-21swapper/200:40:012
2396104993632,3cyclictest714-21Xorg22:13:591
2396104993632,3cyclictest2476848-21grep23:19:591
2396101993633,2cyclictest0-21swapper/023:44:590
2396101993633,2cyclictest0-21swapper/022:34:000
2396101993632,3cyclictest2468874-21grep22:55:000
2396105993531,2cyclictest0-21swapper/223:12:582
2396105993531,2cyclictest0-21swapper/221:14:552
239610599350,32cyclictest0-21swapper/200:31:002
239610599350,1cyclictest0-21swapper/220:35:002
2396104993531,2cyclictest714-21Xorg00:33:581
2396104993531,2cyclictest0-21swapper/123:25:001
2396104993529,5cyclictest2484846-21kworker/u8:3+flush-179:023:55:001
2396101993532,2cyclictest0-21swapper/000:33:590
2396105993431,2cyclictest0-21swapper/223:54:592
2396105993430,2cyclictest0-21swapper/223:28:592
2396101993429,4cyclictest2435224-21kworker/u8:1+flush-179:021:15:260
2396101993426,6cyclictest1213033-21systemd-journal20:30:030
2396101993421,7cyclictest2304-21lightdm-gtk-gre20:29:000
239610199340,33cyclictest714-21Xorg19:12:580
239610199340,33cyclictest714-21Xorg19:12:580
2396105993329,2cyclictest0-21swapper/223:44:552
239610599330,30cyclictest0-21swapper/200:09:592
2396104993327,4cyclictest0-21swapper/120:39:581
2396104993321,8cyclictest714-21Xorg23:35:591
2396104993320,9cyclictest714-21Xorg22:06:591
2396104993318,8cyclictest714-21Xorg21:02:591
2396101993319,9cyclictest908065-21snmpd23:00:120
239610199330,2cyclictest714-21Xorg20:15:590
2396107993230,1cyclictest0-21swapper/323:54:593
2396107993230,1cyclictest0-21swapper/323:12:593
2396107993230,1cyclictest0-21swapper/321:14:553
2396107993227,4cyclictest2480030-21turbostat23:30:003
239610799320,31cyclictest0-21swapper/300:31:003
239610599320,30cyclictest0-21swapper/223:34:002
2396104993228,3cyclictest2418697-21latency_hist20:20:011
2396104993228,3cyclictest2409619-21hwlatdetect19:50:161
2396104993226,4cyclictest0-21swapper/120:01:001
2396104993222,6cyclictest714-21Xorg19:27:001
239610199326,9cyclictest2410507-21turbostat.cron19:54:560
2396101993229,2cyclictest2412103-21sendmail19:59:590
2396101993227,4cyclictest714-21Xorg22:42:590
2396107993126,4cyclictest2449520-21turbostat21:55:003
239610799310,1cyclictest0-21swapper/300:09:583
2396105993127,2cyclictest0-21swapper/220:37:592
2396105993127,2cyclictest0-21swapper/219:26:592
2396101993126,4cyclictest2408016-21gltestperf19:45:170
2396101993123,6cyclictest714-21Xorg22:21:590
2396101993117,7cyclictest714-21Xorg20:05:590
231999310,6rtkit-daemon2318-21rtkit-daemon22:15:110
2396107993028,1cyclictest0-21swapper/323:44:553
2396107993027,2cyclictest0-21swapper/320:37:593
239610799300,28cyclictest0-21swapper/320:50:023
239610799300,1cyclictest0-21swapper/319:33:593
2396105993027,2cyclictest0-21swapper/222:50:132
2396105993027,2cyclictest0-21swapper/220:50:022
239610599300,28cyclictest0-21swapper/223:35:142
239610599300,28cyclictest0-21swapper/223:00:132
239610599300,28cyclictest0-21swapper/221:55:032
239610599300,28cyclictest0-21swapper/220:45:022
2396104993021,6cyclictest714-21Xorg22:42:581
2396101993016,8cyclictest714-21Xorg20:56:590
4577091290,5ptp4l441ktimers/322:54:563
2396107992927,1cyclictest0-21swapper/323:31:003
2396107992926,2cyclictest0-21swapper/323:35:133
2396107992926,2cyclictest0-21swapper/321:55:033
2396107992926,2cyclictest0-21swapper/320:10:113
2396107992926,2cyclictest0-21swapper/319:26:593
239610799290,2cyclictest0-21swapper/322:57:593
239610799290,28cyclictest0-21swapper/323:15:133
239610799290,28cyclictest0-21swapper/322:38:593
2396105992926,2cyclictest0-21swapper/219:50:592
239610599290,2cyclictest0-21swapper/223:15:132
239610599290,2cyclictest0-21swapper/221:52:592
239610599290,28cyclictest0-21swapper/223:58:002
239610599290,28cyclictest0-21swapper/220:15:132
239610599290,27cyclictest0-21swapper/219:40:142
239610499290,28cyclictest714-21Xorg20:57:001
2396107992823,4cyclictest2412104-21turbostat19:59:593
2396107992823,4cyclictest2399387-21turbostat19:20:003
239610799280,27cyclictest0-21swapper/322:21:003
239610799280,26cyclictest0-21swapper/323:00:123
239610799280,26cyclictest0-21swapper/321:04:593
239610799280,26cyclictest0-21swapper/320:45:023
239610799280,1cyclictest0-21swapper/320:15:123
239610799280,1cyclictest0-21swapper/319:50:133
239610799280,1cyclictest0-21swapper/319:40:133
2396105992824,2cyclictest0-21swapper/222:21:002
239610599280,2cyclictest0-21swapper/222:57:592
239610599280,26cyclictest0-21swapper/222:38:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-022:35:003
4577091270,6ptp4l61490irq/134-eno1-TxRx-021:20:003
4577091270,6ptp4l441ktimers/300:19:563
4577091270,6ptp4l441ktimers/300:15:003
2396107992724,2cyclictest0-21swapper/319:47:593
2396107992723,3cyclictest0-21swapper/323:57:593
2396107992721,5cyclictest2444737-21turbostat21:40:003
239610799270,1cyclictest0-21swapper/300:26:003
239610799270,1cyclictest0-21swapper/300:25:593
2396105992724,2cyclictest0-21swapper/221:46:592
2396105992724,2cyclictest0-21swapper/221:05:592
2396105992724,2cyclictest0-21swapper/221:00:592
2396105992724,2cyclictest0-21swapper/219:47:592
2396105992723,2cyclictest0-21swapper/220:20:592
239610599270,2cyclictest0-21swapper/219:24:002
4577091260,6ptp4l61490irq/134-eno1-TxRx-022:10:013
4577091260,6ptp4l61490irq/134-eno1-TxRx-021:35:013
4577091260,6ptp4l441ktimers/319:24:553
4577091260,6ptp4l441ktimers/300:04:573
4577091260,6ptp4l441ktimers/300:04:573
4577091260,5ptp4l441ktimers/322:50:003
2396107992624,1cyclictest0-21swapper/321:48:593
2396107992623,2cyclictest0-21swapper/320:20:593
2396105992623,2cyclictest0-21swapper/220:00:002
2396105992623,2cyclictest0-21swapper/219:19:592
2396105992622,2cyclictest0-21swapper/221:28:592
2396105992622,2cyclictest0-21swapper/220:40:582
2396105992622,2cyclictest0-21swapper/200:27:592
2396105992622,2cyclictest0-21swapper/200:27:592
2396101992615,7cyclictest2402099-21ps19:25:210
4577091250,5ptp4l441ktimers/321:44:563
2396105992522,2cyclictest0-21swapper/222:45:592
239610599250,2cyclictest0-21swapper/200:10:592
2396107992422,1cyclictest0-21swapper/321:28:593
2396105992421,2cyclictest0-21swapper/221:40:012
2396105992421,2cyclictest0-21swapper/221:20:142
2396105992421,1cyclictest0-21swapper/222:06:002
2396105992420,2cyclictest0-21swapper/200:16:592
4577091230,4ptp4l61490irq/134-eno1-TxRx-019:39:573
2396105992220,1cyclictest0-21swapper/221:44:582
231999220,12rtkit-daemon23940-21sendmail-mta19:09:281
231999220,12rtkit-daemon23940-21sendmail-mta19:09:271
2396105992117,2cyclictest0-21swapper/221:34:552
2396105992018,1cyclictest0-21swapper/219:39:592
2396105992016,2cyclictest0-21swapper/200:03:592
2396105992016,2cyclictest0-21swapper/200:03:582
2396105991613,2cyclictest0-21swapper/222:34:002
23961059940,2cyclictest0-21swapper/219:10:022
23961059940,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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