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2026-06-08 - 06:39
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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 792 highest latencies:
System rackeslot6.osadl.org (updated Mon Jun 08, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
336511799133116,13cyclictest3458953-40mandb00:00:010
45770911320,14ptp4l61490irq/134-eno1-TxRx-019:07:593
336511999128117,8cyclictest3440933-21kworker/u8:2+flush-179:023:35:001
336511799118107,8cyclictest1213033-21systemd-journal19:50:010
336511799114103,8cyclictest3395533-21latency_hist20:45:020
336511799106100,4cyclictest3414892-21kworker/u8:1+events_unbound21:45:000
33651179910393,7cyclictest3408272-21latency_hist21:25:010
33651179910191,8cyclictest3390748-21latency_hist20:30:010
33651179910191,7cyclictest3381195-21latency_hist20:00:010
3365117999689,5cyclictest3373209-21kworker/u8:3+flush-179:020:20:240
3365117999286,4cyclictest3373209-21kworker/u8:3+flush-179:020:05:250
3365117999080,7cyclictest3460582-21latency_hist00:05:010
3365119998782,3cyclictest3373226-21latency_hist19:35:001
3365119998374,6cyclictest3447505-21kworker/u8:0+flush-179:023:40:011
3365117998375,5cyclictest3447505-21kworker/u8:0+events_unbound23:30:000
3365117998374,6cyclictest3371382-21latency_hist19:30:010
3365119998264,12cyclictest3458989-21cups-browsed00:00:011
3365117998273,7cyclictest3440898-21latency_hist23:05:000
3365117998273,6cyclictest3389420-21kworker/u8:1+flush-179:021:10:220
3365119998072,5cyclictest3376421-21latency_hist19:45:011
3365117998073,5cyclictest3413267-21kworker/u8:0+flush-179:022:15:160
3365117998072,6cyclictest3397097-21kworker/u8:2+events_unbound21:09:590
3365119997869,7cyclictest3440063-21kworker/u8:1+flush-179:023:15:011
3365117997872,4cyclictest3360440-21kworker/u8:2+flush-179:019:10:120
3365117997871,5cyclictest3434313-21kworker/u8:3+flush-179:023:00:000
3365117997670,5cyclictest3436094-21kworker/u8:0+flush-179:022:55:000
3365117997468,4cyclictest3424704-21latency_hist22:15:000
3365117997466,6cyclictest1213033-21systemd-journal23:55:010
3365119997363,7cyclictest1213033-21systemd-journal19:15:001
3365117997365,6cyclictest3389420-21kworker/u8:1+flush-179:020:55:160
3365119997263,6cyclictest3373209-21kworker/u8:3+flush-179:020:10:001
3365119997262,8cyclictest1213033-21systemd-journal19:40:001
3365119997262,7cyclictest3398705-21latency_hist20:55:011
3365119997162,7cyclictest3434313-21kworker/u8:3+flush-179:022:50:261
3365119997162,6cyclictest3368205-21latency_hist19:20:011
3365117997163,5cyclictest3431058-21kworker/u8:2+flush-179:022:40:230
3365117997065,4cyclictest3452807-21kworker/u8:3+events_unbound00:25:010
3365119996965,3cyclictest3413267-21kworker/u8:0+events_unbound22:05:011
3365119996958,9cyclictest3431058-21kworker/u8:2+flush-179:022:40:011
3365117996961,6cyclictest3392303-21kworker/u8:2+flush-179:020:35:170
3365117996861,5cyclictest3405311-21kworker/u8:2+flush-179:021:30:210
3365117996763,3cyclictest1213033-21systemd-journal20:50:000
3365117996759,6cyclictest3452807-21kworker/u8:3+events_unbound23:40:250
3365119996656,8cyclictest3391004-21apt-get20:30:121
3365117996657,7cyclictest3440933-21kworker/u8:2+events_unbound23:20:260
3365117996656,8cyclictest1213033-21systemd-journal23:40:000
3365117996558,4cyclictest1-21systemd00:40:000
3365117996557,6cyclictest3413267-21kworker/u8:0+events_unbound22:00:140
3365117996552,9cyclictest510-21rs:main0
3365119996454,8cyclictest3445693-21latency_hist23:20:011
3365117996457,5cyclictest3426350-21kworker/u8:3+flush-179:022:25:240
3365117996456,6cyclictest3373209-21kworker/u8:3+flush-179:020:00:170
3365119996356,5cyclictest3447505-21kworker/u8:0+flush-179:000:25:251
3365117996357,4cyclictest3373209-21kworker/u8:3+flush-179:019:50:210
3365119996257,4cyclictest3384412-21kworker/u8:2+flush-179:020:15:231
3365119996154,5cyclictest3389420-21kworker/u8:1+events_unbound21:20:241
3365119996154,4cyclictest3392592-21apt-get20:35:131
3365117996056,2cyclictest151ktimers/019:40:000
3365117995849,5cyclictest3414892-21kworker/u8:1+flush-179:021:45:110
3365117995752,4cyclictest3447505-21kworker/u8:0+events_unbound00:15:240
3365117995752,4cyclictest3368174-21kworker/u8:1+flush-179:019:40:230
3365117995749,5cyclictest3405311-21kworker/u8:2+events_unbound21:25:190
3365117995748,6cyclictest3470127-21latency_hist00:35:000
3365117995748,6cyclictest1213033-21systemd-journal23:31:390
3365119995645,9cyclictest1213033-21systemd-journal21:50:011
3365117995651,4cyclictest3368174-21kworker/u8:1+events_unbound19:20:240
3365117995649,5cyclictest3430480-21kworker/u8:1+flush-179:022:35:250
3365117995550,4cyclictest3440933-21kworker/u8:2+flush-179:023:15:210
3365117995549,4cyclictest3405311-21kworker/u8:2+events_unbound21:40:010
3365117995548,5cyclictest3442739-21apt-get23:10:120
3365117995548,5cyclictest3384412-21kworker/u8:2+flush-179:020:20:010
3365117995546,7cyclictest3434313-21kworker/u8:3+flush-179:022:45:240
3365117995546,6cyclictest3413267-21kworker/u8:0+flush-179:021:55:170
3365117995546,6cyclictest3413267-21kworker/u8:0+flush-179:021:55:160
3365123995451,2cyclictest0-21swapper/223:43:002
3365117995450,3cyclictest3447505-21kworker/u8:0+flush-179:000:05:200
3365123995350,2cyclictest0-21swapper/200:36:592
3365117995347,4cyclictest3440063-21kworker/u8:1+flush-179:023:05:220
3365124995250,1cyclictest0-21swapper/323:42:593
3365119995241,9cyclictest3411447-21latency_hist21:35:021
3365117995244,6cyclictest3430480-21kworker/u8:1+events_unbound22:35:000
3365117995242,8cyclictest1213033-21systemd-journal21:55:010
3365117995146,4cyclictest3387609-21kworker/u8:0+flush-179:020:30:240
3365119995044,5cyclictest3405311-21kworker/u8:2+flush-179:021:50:211
3365119995042,6cyclictest1213033-21systemd-journal19:20:371
3365119995041,7cyclictest3452807-21kworker/u8:3+flush-179:000:10:171
3365119995038,9cyclictest1213033-21systemd-journal22:25:001
3365119995038,10cyclictest3439036-21apt-get22:59:591
3365119994942,5cyclictest3426313-21latency_hist22:20:021
3365119994942,5cyclictest3373209-21kworker/u8:3+events_unbound20:10:201
3365117994941,5cyclictest3447505-21kworker/u8:0+events_unbound00:30:020
3365117994938,7cyclictest3452807-21kworker/u8:3+flush-179:000:10:210
3365119994842,4cyclictest3439547-21/usr/sbin/munin23:00:161
3365119994839,7cyclictest3440063-21kworker/u8:1+events_unbound23:05:261
3365117994841,5cyclictest3413267-21kworker/u8:0+events_unbound22:05:150
3365119994640,4cyclictest3447505-21kworker/u8:0+flush-179:000:19:401
3365119994640,4cyclictest3413570-21apt-get21:40:131
3365119994638,6cyclictest3421783-21apt-get22:05:121
3365119994636,8cyclictest3432941-21apt-get22:40:121
3365119994538,5cyclictest3423371-21apt-get22:10:121
3365119994440,3cyclictest3406723-21systemd-run21:20:011
3365119994432,6cyclictest3440063-21kworker/u8:1+events_unbound23:20:021
3365119994338,3cyclictest3447505-21kworker/u8:0+events_unbound00:10:001
3365119994337,5cyclictest3413267-21kworker/u8:0+flush-179:022:35:011
3365124994236,5cyclictest3379602-21turbostat19:55:013
3365119994237,4cyclictest3389420-21kworker/u8:1+flush-179:021:00:241
3365119994235,5cyclictest3434313-21kworker/u8:3+flush-179:022:45:161
3365119994233,7cyclictest1213033-21systemd-journal20:05:001
3365124994135,5cyclictest3392350-21turbostat20:35:003
336512399410,36cyclictest0-21swapper/223:14:552
336512499400,39cyclictest3442501-21turbostat23:10:003
336512499400,38cyclictest3378018-21turbostat19:50:003
3365119994035,2cyclictest3452807-21kworker/u8:3+flush-179:023:40:171
336511799400,38cyclictest714-21Xorg20:50:580
3365124993934,4cyclictest3445672-21turbostat23:20:013
336512499390,38cyclictest3462174-21turbostat00:09:593
336512499390,38cyclictest3373233-21turbostat19:35:003
336512499390,38cyclictest0-21swapper/323:14:553
336512499390,37cyclictest0-21swapper/322:15:593
336512499390,37cyclictest0-21swapper/320:01:583
336512399390,35cyclictest0-21swapper/221:44:552
3365119993934,3cyclictest714-21Xorg19:47:591
3365119993933,4cyclictest3452807-21kworker/u8:3+flush-179:023:45:161
3365119993932,5cyclictest1213033-21systemd-journal00:22:381
336511999390,2cyclictest0-21swapper/100:31:591
3365117993932,4cyclictest3364981-21latency_hist19:10:030
3365117993930,6cyclictest3389420-21kworker/u8:1+events_unbound21:15:150
3365123993834,2cyclictest0-21swapper/222:59:552
3365123993834,2cyclictest0-21swapper/222:00:592
3365123993834,2cyclictest0-21swapper/220:20:592
3365123993833,2cyclictest0-21swapper/221:02:592
336512399380,36cyclictest0-21swapper/220:01:592
3365119993835,2cyclictest714-21Xorg21:35:581
3365119993835,2cyclictest714-21Xorg00:01:001
3365119993829,7cyclictest3389420-21kworker/u8:1+flush-179:021:15:001
3365119993815,9cyclictest3456445-21basename23:50:161
336511799381,34cyclictest3454414-21http23:45:130
3365124993734,2cyclictest0-21swapper/322:59:563
3365124993734,2cyclictest0-21swapper/320:20:593
3365124993733,2cyclictest0-21swapper/300:04:593
3365124993731,5cyclictest3400324-21turbostat21:00:003
336512499370,36cyclictest0-21swapper/321:44:543
3365123993734,2cyclictest0-21swapper/223:28:592
3365123993734,2cyclictest0-21swapper/219:48:592
3365123993734,2cyclictest0-21swapper/200:34:552
3365123993733,2cyclictest0-21swapper/221:47:592
3365123993733,2cyclictest0-21swapper/219:50:592
336512399370,35cyclictest0-21swapper/222:15:592
3365117993732,4cyclictest3389420-21kworker/u8:1+flush-179:021:00:220
3365124993634,1cyclictest0-21swapper/323:28:593
3365124993633,2cyclictest0-21swapper/321:48:003
3365124993633,2cyclictest0-21swapper/321:02:593
3365124993632,2cyclictest0-21swapper/319:24:553
3365124993630,5cyclictest3455754-21turbostat23:50:003
3365123993634,1cyclictest0-21swapper/220:35:002
3365123993633,2cyclictest0-21swapper/223:20:002
3365123993633,2cyclictest0-21swapper/223:06:002
3365123993633,2cyclictest0-21swapper/220:37:592
3365123993633,2cyclictest0-21swapper/219:24:552
3365119993631,4cyclictest3397097-21kworker/u8:2+events_unbound21:05:241
336511999360,25cyclictest3395713-21cat20:45:021
3365117993633,2cyclictest3413267-21kworker/u8:0+events_unbound22:20:200
336511799361,6cyclictest0-21swapper/020:10:120
3365124993533,1cyclictest0-21swapper/322:01:003
3365123993532,2cyclictest0-21swapper/223:02:002
3365123993531,2cyclictest0-21swapper/223:53:592
336512399350,1cyclictest0-21swapper/200:09:592
3365119993531,3cyclictest3418914-21fschecks_count21:55:171
3365119993531,3cyclictest3418914-21fschecks_count21:55:161
3365124993432,1cyclictest0-21swapper/320:37:583
3365124993428,5cyclictest3457340-21turbostat23:55:013
3365123993432,1cyclictest0-21swapper/200:04:592
3365123993431,2cyclictest0-21swapper/200:23:592
3365119993429,4cyclictest3368174-21kworker/u8:1+flush-179:019:25:171
3365124993331,1cyclictest0-21swapper/323:02:003
3365124993331,1cyclictest0-21swapper/300:23:593
3365123993330,2cyclictest0-21swapper/223:50:002
3365123993329,2cyclictest0-21swapper/222:23:582
3365123993329,2cyclictest0-21swapper/200:28:592
3365119993323,7cyclictest0-21swapper/119:55:131
4577091320,4ptp4l441ktimers/300:30:023
3365124993229,2cyclictest0-21swapper/322:23:593
3365123993230,1cyclictest0-21swapper/220:59:592
3365123993229,2cyclictest0-21swapper/222:14:552
3365123993229,2cyclictest0-21swapper/222:05:592
3365123993229,2cyclictest0-21swapper/200:12:582
336511999329,8cyclictest3471067-21needreboot00:35:191
3365119993227,3cyclictest3389419-21http20:25:151
336511999321,29cyclictest0-21swapper/120:55:141
3365117993229,2cyclictest0-21swapper/019:19:590
3365124993129,1cyclictest0-21swapper/322:14:543
3365124993129,1cyclictest0-21swapper/300:12:583
336512499310,28cyclictest0-21swapper/323:30:133
3365123993128,2cyclictest0-21swapper/221:18:582
3365123993128,2cyclictest0-21swapper/220:42:582
336512399310,2cyclictest0-21swapper/222:35:132
3365119993127,3cyclictest3397114-21dump-pmu-power20:49:551
336511999310,29cyclictest3408526-21apt-get21:25:131
3365124993028,1cyclictest0-21swapper/322:05:593
3365124993028,1cyclictest0-21swapper/321:18:593
3365124993028,1cyclictest0-21swapper/320:42:593
3365124993025,4cyclictest3390765-21turbostat20:30:003
336512499300,2cyclictest0-21swapper/322:35:143
336512499300,2cyclictest0-21swapper/319:40:133
336512499300,2cyclictest0-21swapper/300:30:133
336512499300,28cyclictest0-21swapper/323:21:593
336512499300,28cyclictest0-21swapper/320:50:123
336512499300,28cyclictest0-21swapper/319:15:133
336512499300,21cyclictest0-21swapper/321:55:153
336512499300,21cyclictest0-21swapper/321:55:143
336512399300,28cyclictest0-21swapper/219:40:132
336512399300,28cyclictest0-21swapper/219:25:142
3365119993025,4cyclictest3388656-21phc2sys20:20:231
4577091290,7ptp4l441ktimers/319:40:003
4577091290,6ptp4l441ktimers/300:20:003
3365124992925,2cyclictest0-21swapper/321:35:023
336512499290,2cyclictest0-21swapper/321:35:023
336512499290,28cyclictest0-21swapper/321:10:123
336512499290,28cyclictest0-21swapper/300:00:013
3365123992926,2cyclictest0-21swapper/220:50:132
3365123992926,2cyclictest0-21swapper/219:15:132
3365123992926,2cyclictest0-21swapper/200:00:022
3365123992925,2cyclictest0-21swapper/219:35:592
336512399290,2cyclictest0-21swapper/220:25:592
336512399290,27cyclictest0-21swapper/223:30:122
336512399290,27cyclictest0-21swapper/219:30:142
336512399290,26cyclictest0-21swapper/223:22:002
3365119992927,1cyclictest3448041-21apt-get23:25:131
4577091280,6ptp4l61490irq/134-eno1-TxRx-022:45:013
4577091280,6ptp4l441ktimers/322:34:593
3365124992826,1cyclictest0-21swapper/322:28:593
3365124992826,1cyclictest0-21swapper/300:39:593
3365124992825,2cyclictest0-21swapper/321:09:593
3365124992825,2cyclictest0-21swapper/320:16:003
336512499280,26cyclictest0-21swapper/319:25:153
3365123992825,2cyclictest0-21swapper/222:29:002
3365123992825,2cyclictest0-21swapper/221:35:022
3365123992825,2cyclictest0-21swapper/221:32:592
3365123992824,2cyclictest0-21swapper/220:16:002
336512399280,2cyclictest0-21swapper/221:55:152
336512399280,2cyclictest0-21swapper/221:55:152
336512399280,27cyclictest0-21swapper/221:10:132
336512399280,26cyclictest0-21swapper/220:46:002
336512399280,24cyclictest0-21swapper/222:34:002
336512399280,18cyclictest0-21swapper/221:52:582
4577091270,6ptp4l441ktimers/321:29:553
4577091270,6ptp4l441ktimers/320:15:013
4577091270,6ptp4l441ktimers/320:00:003
336512499270,26cyclictest0-21swapper/319:10:593
336512499270,24cyclictest0-21swapper/320:46:003
3365123992725,1cyclictest0-21swapper/221:09:592
3365123992724,2cyclictest0-21swapper/222:42:592
336512399270,24cyclictest0-21swapper/222:49:562
336512399270,24cyclictest0-21swapper/220:05:132
4577091260,6ptp4l61490irq/134-eno1-TxRx-021:54:563
4577091260,4ptp4l441ktimers/322:55:013
3365123992622,2cyclictest0-21swapper/222:52:582
336512399260,24cyclictest0-21swapper/219:58:592
336512399260,24cyclictest0-21swapper/219:10:592
3365119992622,3cyclictest3429526-21systemd-run22:29:591
3365119992621,4cyclictest0-21swapper/119:10:021
4577091250,5ptp4l61490irq/134-eno1-TxRx-023:40:013
336512499250,1cyclictest0-21swapper/320:05:133
3365123992521,2cyclictest0-21swapper/221:29:002
336511999257,6cyclictest0-21swapper/119:50:181
336512499240,23cyclictest0-21swapper/322:49:553
3365123992420,2cyclictest0-21swapper/223:38:592
3365123992420,2cyclictest0-21swapper/221:23:592
3365124992220,1cyclictest0-21swapper/321:23:593
3365123991713,2cyclictest0-21swapper/200:16:002
3365123991310,2cyclictest0-21swapper/220:11:592
33651239930,2cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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