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2026-03-21 - 06:44
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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 Sat Mar 21, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
343162299115105,7cyclictest3493909-21latency_hist22:25:001
34316229911283,25cyclictest3524690-40mandb00:00:001
34316189910999,8cyclictest3473168-21latency_hist21:20:010
3431618999384,7cyclictest3445854-21latency_hist19:55:000
3431622999181,7cyclictest3513260-21latency_hist23:25:011
3431618998978,9cyclictest266-21systemd-journal00:05:000
3431622998774,9cyclictest3487545-21latency_hist22:05:001
3431618998783,2cyclictest3473219-21kworker/u8:0+events_unbound21:35:000
3431618998782,3cyclictest3499184-21/usr/sbin/munin22:40:210
3431622998576,7cyclictest3511668-21latency_hist23:20:021
3431622998575,7cyclictest3469986-21latency_hist21:10:001
3431622998372,9cyclictest3500770-21/usr/sbin/munin22:45:231
3431618998175,5cyclictest3463609-21kworker/u8:0+flush-179:020:49:550
3431622998069,8cyclictest266-21systemd-journal21:50:011
3431622997871,5cyclictest3458881-21kworker/u8:3+events_unbound21:00:011
3431618997772,4cyclictest3500520-21kworker/u8:1+events_unbound23:10:010
3431618997772,4cyclictest3500520-21kworker/u8:1+events_unbound23:10:010
3431618997770,5cyclictest3487590-21kworker/u8:1+events_unbound22:20:230
3431618997671,4cyclictest3516413-21kworker/u8:0+flush-179:023:40:240
3431618997670,5cyclictest3435183-21kworker/u8:2+events_unbound19:45:020
3431622997566,6cyclictest266-21systemd-journal20:51:381
3431622997565,7cyclictest3455672-21latency_hist20:25:011
3431618997568,5cyclictest3447499-21kworker/u8:2+flush-179:020:40:010
3431618997470,3cyclictest3441135-21kworker/u8:1+flush-179:019:50:010
3431618997468,4cyclictest3465192-21kworker/u8:1+flush-179:021:40:240
3431622997362,8cyclictest3458881-21kworker/u8:3+flush-179:021:15:211
3431618997367,5cyclictest3465192-21kworker/u8:1+flush-179:021:09:560
3431618997367,4cyclictest3441135-21kworker/u8:1+flush-179:020:00:000
3431618997362,9cyclictest266-21systemd-journal22:25:000
3431622997261,8cyclictest3473219-21kworker/u8:0+flush-179:021:35:231
3431618997164,4cyclictest3481174-21kworker/u8:3+flush-179:021:50:240
3431618997163,4cyclictest3506928-21kworker/u8:3+flush-179:023:10:180
3431622997051,17cyclictest266-21systemd-journal19:46:271
3431618997061,7cyclictest3471570-21latency_hist21:15:000
3431622996961,6cyclictest266-21systemd-journal21:57:381
3431618996964,4cyclictest3450611-21kworker/u8:0+flush-179:020:20:240
3431622996861,5cyclictest3490759-21kworker/u8:2+flush-179:022:35:231
3431618996862,5cyclictest3521728-21kworker/u8:1+flush-179:000:39:560
3431622996760,5cyclictest3447499-21kworker/u8:2+flush-179:020:35:001
3431622996744,5cyclictest3452218-21latency_hist20:15:021
3431618996762,4cyclictest3521728-21kworker/u8:1+flush-179:000:34:560
3431618996760,4cyclictest3506928-21kworker/u8:3+events_unbound23:30:140
3431622996657,6cyclictest3510064-21latency_hist23:15:001
3431618996658,5cyclictest3518345-21kworker/u8:2+flush-179:000:25:180
3431618996559,5cyclictest3516413-21kworker/u8:0+events_unbound23:40:010
3431618996555,7cyclictest3453820-21latency_hist20:20:010
4577091640,1ptp4l441ktimers/323:40:273
3431618996459,4cyclictest3506928-21kworker/u8:3+events_unbound23:25:230
3431618996459,4cyclictest3506928-21kworker/u8:3+events_unbound23:25:230
3431618996457,6cyclictest3447499-21kworker/u8:2+flush-179:020:05:000
3431622996356,5cyclictest3465192-21kworker/u8:1+flush-179:021:15:001
3431618996357,4cyclictest3518345-21kworker/u8:2+flush-179:000:10:250
3431618996356,5cyclictest3489385-21apt-get22:10:120
3431622996257,4cyclictest3458881-21kworker/u8:3+flush-179:021:00:261
3431618996257,4cyclictest3510729-21kworker/u8:0+events_unbound23:15:220
3431618996254,6cyclictest3468402-21latency_hist21:05:010
3431622996152,6cyclictest3441135-21kworker/u8:1+events_unbound19:50:231
3431622996150,9cyclictest266-21systemd-journal23:54:591
3431618996054,4cyclictest3500520-21kworker/u8:1+flush-179:022:50:190
3431618996052,6cyclictest3480609-21kworker/u8:2+events_unbound21:49:590
3431618996052,5cyclictest3498911-21kworker/u8:0+flush-179:022:45:190
3431618995954,4cyclictest3504764-21kworker/u8:2+events_unbound22:55:240
3431618995953,4cyclictest3521728-21kworker/u8:1+flush-179:023:50:240
3431622995852,4cyclictest3481174-21kworker/u8:3+events_unbound22:10:241
3431618995852,5cyclictest3447499-21kworker/u8:2+flush-179:020:25:240
3431618995848,8cyclictest3457513-21apt-get20:30:110
3431622995749,5cyclictest3516413-21kworker/u8:0+flush-179:023:45:251
3431622995733,18cyclictest3481174-21kworker/u8:3+flush-179:022:25:221
3431618995750,5cyclictest3497339-21latency_hist22:35:010
3431618995750,5cyclictest266-21systemd-journal00:10:000
3431618995749,6cyclictest3521470-21latency_hist23:50:010
3431618995746,9cyclictest3463876-21apt-get20:50:100
3431622995648,6cyclictest3481174-21kworker/u8:3+flush-179:022:15:211
3431618995651,4cyclictest3435183-21kworker/u8:2+flush-179:019:35:230
3431618995651,4cyclictest3325984-21kworker/u8:3+events_unbound19:10:160
3431618995639,13cyclictest3458881-21kworker/u8:3+flush-179:020:40:200
3431618995449,4cyclictest3486837-21kworker/u8:0+flush-179:022:09:540
3431622995345,7cyclictest3447499-21kworker/u8:2+flush-179:020:25:201
3431622995245,5cyclictest3531071-21latency_hist00:20:001
3431618995246,4cyclictest3506928-21kworker/u8:3+events_unbound23:20:240
3431618995244,5cyclictest191rcuc/021:20:200
4577091510,14ptp4l441ktimers/319:10:013
3431622995146,4cyclictest3521728-21kworker/u8:1+events_unbound00:04:021
3431622995141,8cyclictest3534493-21kworker/u8:0+flush-179:000:35:201
3431622995140,9cyclictest3475003-21/usr/sbin/munin21:25:221
3431618994942,5cyclictest3521728-21kworker/u8:1+flush-179:000:15:200
3431622994840,5cyclictest3441135-21kworker/u8:1+flush-179:020:05:171
3431622994839,7cyclictest3459102-21apt-get20:35:121
3431618994842,4cyclictest3465192-21kworker/u8:1+flush-179:021:25:200
3431622994743,3cyclictest3325984-21kworker/u8:3+events_unbound19:10:121
3431622994729,16cyclictest3516769-21apt-key23:35:011
3431618994742,4cyclictest3441135-21kworker/u8:1+flush-179:020:05:240
3431618994734,10cyclictest266-21systemd-journal21:36:380
3431622994641,3cyclictest3484351-21latency_hist21:55:021
3431622994640,5cyclictest3481174-21kworker/u8:3+flush-179:022:30:211
3431622994639,5cyclictest266-21systemd-journal19:20:001
3431622994635,10cyclictest3521728-21kworker/u8:1+events_unbound00:10:231
3431618994640,4cyclictest3521728-21kworker/u8:1+events_unbound00:25:000
3431618994637,7cyclictest3433362-21kworker/u8:0+flush-179:019:30:190
3431622994540,4cyclictest3435183-21kworker/u8:2+flush-179:019:35:241
3431622994538,6cyclictest3516413-21kworker/u8:0+flush-179:023:35:211
3431622994536,7cyclictest266-21systemd-journal20:05:001
3431618994540,4cyclictest3518345-21kworker/u8:2+flush-179:023:59:380
3431618994539,4cyclictest3431500-21kworker/u8:1+events_unbound19:15:240
3431622994437,5cyclictest3462036-21latency_hist20:45:011
3431618994439,4cyclictest3481174-21kworker/u8:3+flush-179:022:15:200
3431618994438,5cyclictest3490759-21kworker/u8:2+flush-179:022:35:190
3431622994336,5cyclictest3433362-21kworker/u8:0+flush-179:019:25:011
343162899410,39cyclictest3505319-21turbostat23:00:013
3431622994135,4cyclictest3465192-21kworker/u8:1+flush-179:021:40:131
343162299411,38cyclictest714-21Xorg23:26:591
343162299411,38cyclictest714-21Xorg23:26:581
3431622994035,4cyclictest3442722-21systemd-run19:45:011
3431622994034,5cyclictest266-21systemd-journal23:07:371
3431622994034,5cyclictest266-21systemd-journal23:07:361
3431622994033,4cyclictest0-21swapper/120:45:591
343162299401,37cyclictest714-21Xorg23:44:591
343162299400,2cyclictest714-21Xorg22:58:581
3431628993937,1cyclictest0-21swapper/321:39:003
343162799390,36cyclictest0-21swapper/221:09:562
3431622993932,5cyclictest3521728-21kworker/u8:1+flush-179:000:25:121
343162299390,2cyclictest714-21Xorg22:07:001
3431618993934,3cyclictest3507087-21latency_hist23:05:010
3431628993836,1cyclictest0-21swapper/319:54:553
343162799380,36cyclictest0-21swapper/221:56:582
3431622993834,3cyclictest3527924-21systemd-run00:10:011
3431618993835,2cyclictest3458881-21kworker/u8:3+events_unbound20:55:180
3431618993828,5cyclictest0-21swapper/019:28:590
3431618993826,2cyclictest714-21Xorg21:57:590
3431628993735,1cyclictest0-21swapper/322:53:003
3431628993734,2cyclictest0-21swapper/321:25:003
3431628993734,1cyclictest0-21swapper/319:15:593
343162899370,36cyclictest0-21swapper/322:25:003
3431627993734,2cyclictest0-21swapper/221:29:552
343162799370,1cyclictest0-21swapper/222:29:592
3431622993730,5cyclictest3521728-21kworker/u8:1+flush-179:000:20:201
343162299370,36cyclictest3453827-21munin-plugin-st20:20:001
3431618993727,8cyclictest3486213-21apt-get22:00:120
4577091360,5ptp4l441ktimers/323:50:003
3431628993630,5cyclictest3463630-21turbostat20:50:003
343162899360,35cyclictest0-21swapper/323:38:003
343162899360,35cyclictest0-21swapper/320:34:593
343162899360,35cyclictest0-21swapper/319:57:593
343162899360,35cyclictest0-21swapper/300:00:003
343162899360,1cyclictest0-21swapper/321:27:593
343162899360,1cyclictest0-21swapper/320:41:593
343162899360,1cyclictest0-21swapper/319:12:593
343162899360,1cyclictest0-21swapper/300:15:593
3431627993634,1cyclictest0-21swapper/200:20:002
3431627993633,2cyclictest0-21swapper/221:46:592
343162799360,2cyclictest0-21swapper/220:17:592
3431622993631,4cyclictest484-21dbus-daemon20:00:001
3431622993627,7cyclictest3503701-21latency_hist22:55:001
3431628993533,1cyclictest0-21swapper/321:07:593
3431628993533,1cyclictest0-21swapper/320:54:553
3431628993533,1cyclictest0-21swapper/319:36:593
343162899350,34cyclictest0-21swapper/320:14:553
343162899350,1cyclictest0-21swapper/322:09:543
3431627993532,2cyclictest0-21swapper/223:49:592
343162799350,1cyclictest0-21swapper/200:14:592
3431618993531,3cyclictest3435183-21kworker/u8:2+flush-179:019:20:140
3431618993530,3cyclictest3452223-21grep20:15:000
3431628993432,1cyclictest0-21swapper/322:40:583
3431628993432,1cyclictest0-21swapper/321:19:553
3431627993431,2cyclictest0-21swapper/223:51:592
3431627993431,2cyclictest0-21swapper/221:31:592
3431627993431,2cyclictest0-21swapper/200:20:592
3431627993431,2cyclictest0-21swapper/200:07:582
3431622993426,6cyclictest3435183-21kworker/u8:2+flush-179:019:25:211
3431628993330,2cyclictest0-21swapper/320:39:543
3431627993330,2cyclictest0-21swapper/220:53:592
3431622993327,5cyclictest3465192-21kworker/u8:1+flush-179:021:30:201
3431622993326,6cyclictest3465192-21kworker/u8:1+flush-179:021:20:201
3431628993230,1cyclictest0-21swapper/321:52:593
3431628993229,2cyclictest0-21swapper/322:37:003
3431627993230,1cyclictest0-21swapper/220:07:002
3431627993230,1cyclictest0-21swapper/219:15:012
3431627993229,2cyclictest0-21swapper/223:58:592
3431622993229,2cyclictest0-21swapper/122:40:121
3431628993129,1cyclictest0-21swapper/322:28:583
3431628993129,1cyclictest0-21swapper/320:58:003
343162899310,29cyclictest0-21swapper/323:25:593
343162899310,29cyclictest0-21swapper/323:25:583
3431627993128,2cyclictest0-21swapper/223:15:592
3431627993128,2cyclictest0-21swapper/221:43:592
343162799310,29cyclictest0-21swapper/223:42:592
3431622993126,4cyclictest3534680-21tr00:30:151
3431622993126,3cyclictest3506897-21munin-run23:05:011
343162899300,2cyclictest0-21swapper/321:10:123
3431627993027,2cyclictest0-21swapper/223:00:132
3431627993027,2cyclictest0-21swapper/222:55:132
343162799300,2cyclictest0-21swapper/220:30:132
343162799300,28cyclictest0-21swapper/221:00:142
3431622993024,4cyclictest0-21swapper/119:32:581
3431618993024,4cyclictest3431514-21latency_hist19:10:020
4577091290,7ptp4l441ktimers/323:10:003
4577091290,7ptp4l441ktimers/323:10:003
3431628992927,1cyclictest0-21swapper/321:59:593
3431628992926,2cyclictest0-21swapper/319:46:583
343162899290,28cyclictest0-21swapper/320:15:133
343162899290,28cyclictest0-21swapper/300:25:123
343162899290,27cyclictest0-21swapper/300:00:123
3431627992927,1cyclictest0-21swapper/200:34:592
3431627992926,2cyclictest0-21swapper/223:35:022
3431627992926,2cyclictest0-21swapper/222:50:132
3431627992926,2cyclictest0-21swapper/221:20:122
3431627992926,2cyclictest0-21swapper/220:38:592
343162799290,28cyclictest0-21swapper/219:55:132
343162799290,27cyclictest0-21swapper/219:40:122
343162799290,27cyclictest0-21swapper/200:25:122
343162899280,2cyclictest0-21swapper/323:50:143
343162899280,27cyclictest0-21swapper/322:10:133
343162899280,27cyclictest0-21swapper/300:05:593
343162899280,26cyclictest0-21swapper/321:40:133
343162899280,26cyclictest0-21swapper/321:30:113
3431627992825,2cyclictest0-21swapper/222:46:582
3431627992825,2cyclictest0-21swapper/221:10:122
3431627992825,2cyclictest0-21swapper/220:58:592
3431627992825,2cyclictest0-21swapper/219:35:592
3431627992825,2cyclictest0-21swapper/200:00:122
343162799280,26cyclictest0-21swapper/222:10:132
343162799280,26cyclictest0-21swapper/220:25:132
343162799280,26cyclictest0-21swapper/219:30:132
4577091270,6ptp4l441ktimers/322:35:013
3431628992725,1cyclictest0-21swapper/323:15:123
343162899270,26cyclictest0-21swapper/320:06:593
343162899270,1cyclictest0-21swapper/319:40:143
3431627992725,1cyclictest0-21swapper/221:15:132
3431627992724,2cyclictest0-21swapper/221:36:582
3431627992724,2cyclictest0-21swapper/219:51:592
343162799270,26cyclictest0-21swapper/222:44:592
4577091260,6ptp4l61490irq/134-eno1-TxRx-000:35:023
4577091260,4ptp4l441ktimers/319:25:013
3431628992624,1cyclictest0-21swapper/323:12:583
3431627992623,2cyclictest0-21swapper/222:34:592
3431627992623,2cyclictest0-21swapper/222:00:592
343162799260,24cyclictest0-21swapper/200:36:002
4577091250,3ptp4l441ktimers/323:05:003
4577091250,3ptp4l441ktimers/300:40:003
3431628992523,1cyclictest0-21swapper/323:33:593
3431628992523,1cyclictest0-21swapper/319:31:583
3431628992520,4cyclictest3437917-21turbostat19:30:003
343162899250,1cyclictest0-21swapper/320:25:593
343162899250,1cyclictest0-21swapper/300:13:003
3431627992523,1cyclictest0-21swapper/220:20:592
3431627992522,2cyclictest0-21swapper/221:51:592
3431627992522,2cyclictest0-21swapper/219:46:582
4577091240,3ptp4l61490irq/134-eno1-TxRx-021:50:013
4577091240,3ptp4l441ktimers/323:25:013
4577091240,3ptp4l441ktimers/322:49:553
4577091240,3ptp4l441ktimers/322:20:013
4577091240,3ptp4l441ktimers/320:24:553
4577091240,2ptp4l441ktimers/300:25:003
3431627992422,1cyclictest0-21swapper/220:49:592
3431627992422,1cyclictest0-21swapper/220:04:592
3431627992420,2cyclictest0-21swapper/219:27:592
4577091230,3ptp4l441ktimers/322:05:013
3431628992321,1cyclictest0-21swapper/321:02:593
3431627992320,2cyclictest0-21swapper/222:09:552
3431627992320,2cyclictest0-21swapper/219:24:592
3431628992220,1cyclictest0-21swapper/320:00:593
3431627992220,1cyclictest0-21swapper/223:34:592
3431627992220,1cyclictest0-21swapper/223:27:592
3431627992220,1cyclictest0-21swapper/223:27:592
3431627992220,1cyclictest0-21swapper/220:40:592
3431627992219,2cyclictest0-21swapper/222:23:002
3431627992219,2cyclictest0-21swapper/220:14:552
3431627992219,2cyclictest0-21swapper/219:15:592
3431627992018,1cyclictest0-21swapper/223:22:592
3431627992018,1cyclictest0-21swapper/222:36:002
343162299202,13cyclictest3431623-21latency_hist19:10:011
3431627991916,2cyclictest0-21swapper/223:09:592
3431627991916,2cyclictest0-21swapper/223:09:582
3431627991613,2cyclictest0-21swapper/223:10:112
3431627991411,2cyclictest0-21swapper/222:18:582
34316279930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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