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2026-07-09 - 06:01
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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 376 highest latencies:
System rackeslot6.osadl.org (updated Thu Jul 09, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
341189499126117,6cyclictest3510475-21latency_hist00:15:011
341189199121114,5cyclictest3469573-21kworker/u8:0+events_unbound22:15:000
341189199121114,5cyclictest3469573-21kworker/u8:0+events_unbound22:15:000
341189199120111,6cyclictest3443874-21latency_hist20:50:000
341189199118111,4cyclictest3419987-21kworker/u8:3+flush-179:020:00:150
341189199114106,5cyclictest3481258-21kworker/u8:1+events_unbound22:45:230
341189199112103,6cyclictest3418412-21latency_hist19:30:010
34118919910995,10cyclictest1213033-21systemd-journal22:35:140
341189199108102,4cyclictest3427932-21kworker/u8:0+flush-179:020:10:160
341189199107100,5cyclictest3489259-21kworker/u8:1+events_unbound23:10:000
34118919910599,4cyclictest3449315-21kworker/u8:0+flush-179:021:40:160
34118919910590,10cyclictest799521-21cups-browsed00:00:010
34118919910495,6cyclictest3456023-21kworker/u8:2+flush-179:022:10:000
3411891999985,10cyclictest3446122-21kworker/u8:1+flush-179:021:00:210
3411891999985,10cyclictest3446122-21kworker/u8:1+flush-179:021:00:210
3411894999792,4cyclictest3449315-21kworker/u8:0+events_unbound21:45:241
3411891999590,3cyclictest3500911-21kworker/u8:3+flush-179:000:35:200
3411891999488,4cyclictest3504049-21latency_hist23:55:010
3411891999485,6cyclictest3469573-21kworker/u8:0+flush-179:022:55:010
3411891999483,8cyclictest3477808-21latency_hist22:35:010
3411891999286,4cyclictest3425678-21kworker/u8:4+flush-179:019:50:200
3411891999286,4cyclictest3425678-21kworker/u8:4+flush-179:019:50:200
3411891999285,5cyclictest3412809-21kworker/u8:1+flush-179:019:15:170
3411891999181,7cyclictest3476221-21latency_hist22:30:010
3411891999181,6cyclictest3449315-21kworker/u8:0+flush-179:021:30:160
3411891998986,1cyclictest3442288-21latency_hist20:45:010
3411891998984,3cyclictest3449315-21kworker/u8:0+flush-179:021:35:200
3411894998876,10cyclictest3485780-21apt-get23:00:031
3411894998776,8cyclictest3437508-21latency_hist20:30:001
3411894998773,9cyclictest3416808-21kworker/u8:0+events_unbound19:25:021
3411891998780,4cyclictest3496333-21kworker/u8:2+events_unbound23:45:240
3411891998780,4cyclictest3433738-21kworker/u8:1+flush-179:020:25:210
3411894998676,7cyclictest1213033-21systemd-journal20:20:011
3411894998676,7cyclictest1213033-21systemd-journal20:20:001
3411891998679,5cyclictest3507277-21kworker/u8:0+flush-179:000:04:020
3411894998574,8cyclictest510-21rs:main1
3411891998479,3cyclictest3496333-21kworker/u8:2+flush-179:023:40:230
3411891998474,7cyclictest3446122-21kworker/u8:1+flush-179:020:55:220
3411891998377,4cyclictest3411685-21kworker/u8:0+flush-179:019:10:220
3411894998273,6cyclictest3453414-21latency_hist21:20:021
3411891998277,4cyclictest3440746-21kworker/u8:3+flush-179:020:50:210
3411891998276,4cyclictest3429593-21kworker/u8:1+flush-179:020:05:160
3411894998173,6cyclictest3500911-21kworker/u8:3+flush-179:000:04:001
3411891998174,4cyclictest3483578-21kworker/u8:2+flush-179:022:55:220
3411891998169,9cyclictest1213033-21systemd-journal19:50:010
3411894998071,7cyclictest3492921-21apt-get23:20:111
3411894998070,8cyclictest3449315-21kworker/u8:0+flush-179:022:00:001
3411894998065,11cyclictest3469633-21apt-key22:10:011
3411894998064,13cyclictest1213033-21systemd-journal20:10:011
3411891998073,5cyclictest3449315-21kworker/u8:0+flush-179:021:45:150
3411891997974,3cyclictest3500911-21kworker/u8:3+flush-179:000:20:240
3411891997973,4cyclictest3469573-21kworker/u8:0+events_unbound22:20:230
3411891997871,5cyclictest3433738-21kworker/u8:1+flush-179:020:30:150
3411894997764,9cyclictest3449315-21kworker/u8:0+flush-179:021:45:001
3411891997769,6cyclictest3500911-21kworker/u8:3+flush-179:000:25:160
3411891997666,7cyclictest3412809-21kworker/u8:1+flush-179:019:40:000
3411894997571,2cyclictest3456023-21kworker/u8:2+flush-179:021:30:001
3411891997568,4cyclictest3446122-21kworker/u8:1+flush-179:021:10:220
3411891997563,8cyclictest3469573-21kworker/u8:0+flush-179:022:15:190
3411891997466,5cyclictest3469573-21kworker/u8:0+flush-179:022:40:220
3411891997465,6cyclictest3487617-21kworker/u8:3+flush-179:023:10:200
3411894997365,6cyclictest3471980-21diskstats22:15:141
3411891997356,7cyclictest3433738-21kworker/u8:1+events_unbound20:40:010
3411894997267,4cyclictest3476257-21kworker/u8:3+flush-179:022:35:201
3411891997267,3cyclictest3496333-21kworker/u8:2+flush-179:000:10:200
3411891997262,7cyclictest3412809-21kworker/u8:1+events_unbound19:20:020
3411894996956,10cyclictest3495838-21latency_hist23:30:001
3411891996963,4cyclictest3500911-21kworker/u8:3+flush-179:000:15:220
3411891996962,5cyclictest3412809-21kworker/u8:1+flush-179:019:40:170
3411891996960,6cyclictest3492625-21kworker/u8:0+flush-179:023:25:180
3411891996850,8cyclictest3500911-21kworker/u8:3+events_unbound00:30:150
3411894996658,7cyclictest3476477-21apt-get22:30:121
3411891996659,5cyclictest3489259-21kworker/u8:1+flush-179:023:20:000
341189699650,1cyclictest0-21swapper/223:18:592
3411894996558,5cyclictest3481255-21apt-get22:45:101
3411894996459,3cyclictest3440140-21kworker/u8:2+flush-179:020:40:141
3411894996456,6cyclictest3427932-21kworker/u8:0+events_unbound20:15:011
3411894996353,7cyclictest3412809-21kworker/u8:1+flush-179:019:15:001
3411894996347,13cyclictest3469573-21kworker/u8:0+flush-179:022:25:151
3411891996359,3cyclictest3412809-21kworker/u8:1+flush-179:019:30:270
3411894996249,10cyclictest1213033-21systemd-journal23:45:161
3411891996256,4cyclictest3450271-21kworker/u8:2+events_unbound21:15:130
3411894996152,6cyclictest3489259-21kworker/u8:1+flush-179:023:15:171
3411891996151,8cyclictest3496352-21apt-get23:30:100
3411894996053,5cyclictest3508889-21latency_hist00:10:021
3411894996049,8cyclictest3469573-21kworker/u8:0+flush-179:023:10:001
3411891996048,9cyclictest3496333-21kworker/u8:2+flush-179:000:10:010
3411894995954,4cyclictest3446122-21kworker/u8:1+flush-179:021:10:231
3411891995953,4cyclictest3483578-21kworker/u8:2+events_unbound23:00:180
3411894995852,4cyclictest3500911-21kworker/u8:3+flush-179:000:15:111
3411894995851,5cyclictest3496333-21kworker/u8:2+flush-179:023:40:251
3411891995854,2cyclictest3435922-21latency_hist20:25:010
3411891995851,5cyclictest3433738-21kworker/u8:1+flush-179:020:20:010
3411891995851,5cyclictest3433738-21kworker/u8:1+flush-179:020:20:010
3411894995744,10cyclictest3485780-21apt-get23:00:011
3411894995646,8cyclictest3428513-21diskstats20:00:171
3411894995644,9cyclictest3412809-21kworker/u8:1+flush-179:019:15:191
3411894995547,6cyclictest3469573-21kworker/u8:0+flush-179:022:10:211
3411894995547,6cyclictest3469573-21kworker/u8:0+flush-179:022:10:211
3411891995550,4cyclictest3456023-21kworker/u8:2+flush-179:022:04:550
3411891995545,7cyclictest3440746-21kworker/u8:3+flush-179:021:05:150
3411894995446,6cyclictest3440688-21latency_hist20:40:021
3411891995450,3cyclictest3449315-21kworker/u8:0+flush-179:021:54:560
3411891995449,4cyclictest3492625-21kworker/u8:0+events_unbound23:20:250
3411894995346,5cyclictest3469573-21kworker/u8:0+events_unbound22:45:001
3411894995345,6cyclictest3469573-21kworker/u8:0+flush-179:022:20:201
3411891995344,6cyclictest3449315-21kworker/u8:0+events_unbound21:55:140
3411894995246,4cyclictest3489259-21kworker/u8:1+flush-179:023:35:151
3411900995148,2cyclictest0-21swapper/320:44:003
3411894995146,4cyclictest3456023-21kworker/u8:2+events_unbound22:00:211
3411891995146,4cyclictest3489259-21kworker/u8:1+flush-179:023:35:250
4577091490,13ptp4l441ktimers/319:10:013
3411894994938,8cyclictest3489259-21kworker/u8:1+events_unbound23:15:011
3411891994943,4cyclictest3425678-21kworker/u8:4+events_unbound19:55:140
3411894994842,4cyclictest3515246-21kworker/u8:0+flush-179:000:30:151
3411894994841,5cyclictest3449315-21kworker/u8:0+events_unbound21:35:241
3411894994841,5cyclictest3447050-21latency_hist21:00:011
3411894994738,7cyclictest1213033-21systemd-journal21:05:001
3411894994738,7cyclictest1213033-21systemd-journal21:04:591
3411894994635,9cyclictest3412809-21kworker/u8:1+events_unbound19:50:161
3411894994635,9cyclictest3412809-21kworker/u8:1+events_unbound19:50:151
3411894994540,3cyclictest3420037-21systemd-run19:35:001
3411894994528,12cyclictest1213033-21systemd-journal19:25:151
3411900994339,2cyclictest0-21swapper/323:05:593
3411894994335,6cyclictest3419987-21kworker/u8:3+flush-179:019:59:591
3411894994332,7cyclictest3505637-40logrotate00:00:011
3411900994239,2cyclictest0-21swapper/300:33:593
341189699420,35cyclictest0-21swapper/221:43:592
3411894994034,5cyclictest1213033-21systemd-journal19:39:151
341189499401,38cyclictest714-21Xorg00:28:591
341189499400,38cyclictest714-21Xorg20:21:591
3411896993936,2cyclictest0-21swapper/220:20:582
3411896993935,3cyclictest0-21swapper/220:43:592
3411894993935,2cyclictest714-21Xorg00:24:001
3411894993934,2cyclictest714-21Xorg21:32:591
3411891993935,3cyclictest3449315-21kworker/u8:0+flush-179:021:25:240
3411900993836,1cyclictest0-21swapper/323:30:583
3411900993835,2cyclictest0-21swapper/322:01:593
3411900993835,2cyclictest0-21swapper/321:35:583
3411900993834,2cyclictest0-21swapper/323:50:593
341190099380,37cyclictest3516849-21turbostat00:39:543
341189699380,36cyclictest0-21swapper/222:29:592
341189699380,36cyclictest0-21swapper/219:54:002
341189699380,36cyclictest0-21swapper/219:53:592
341189699380,36cyclictest0-21swapper/200:13:592
341189699380,35cyclictest0-21swapper/220:38:592
341190099370,36cyclictest0-21swapper/323:02:593
3411896993735,1cyclictest0-21swapper/219:29:592
341189699370,35cyclictest0-21swapper/221:35:002
3411891993730,5cyclictest1213033-21systemd-journal21:22:140
3411900993634,1cyclictest0-21swapper/322:20:593
3411900993634,1cyclictest0-21swapper/320:30:003
3411900993632,2cyclictest0-21swapper/322:09:593
3411900993630,2cyclictest0-21swapper/321:00:593
3411900993630,2cyclictest0-21swapper/321:00:593
341190099360,35cyclictest0-21swapper/320:30:593
341190099360,35cyclictest0-21swapper/300:21:593
341190099360,1cyclictest0-21swapper/323:18:583
341190099360,1cyclictest0-21swapper/321:53:593
341190099360,1cyclictest0-21swapper/319:33:593
3411896993633,2cyclictest0-21swapper/222:41:592
341189699360,2cyclictest0-21swapper/222:35:592
341189499366,3cyclictest3442542-21apt-get20:45:131
3411894993633,2cyclictest0-21swapper/119:42:001
3411894993631,3cyclictest3445497-21systemd-run20:55:011
341190099350,1cyclictest0-21swapper/320:01:583
3411896993532,2cyclictest0-21swapper/220:12:592
3411894993532,2cyclictest714-21Xorg20:32:581
3411894993532,2cyclictest0-21swapper/122:51:591
3411894993531,3cyclictest3497693-21cron23:35:001
3411894993531,3cyclictest3449315-21kworker/u8:0+flush-179:021:05:191
3411894993527,5cyclictest0-21swapper/121:51:591
3411900993432,1cyclictest0-21swapper/320:06:583
3411900993431,2cyclictest0-21swapper/322:13:593
3411900993431,2cyclictest0-21swapper/322:13:593
3411896993432,1cyclictest0-21swapper/220:30:012
3411896993431,2cyclictest0-21swapper/221:49:002
3411894993422,11cyclictest321-21hwrng23:50:241
3411900993331,1cyclictest0-21swapper/300:28:593
3411896993331,1cyclictest0-21swapper/221:19:582
3411894993326,5cyclictest3518581-21apt-config00:40:011
341189499332,29cyclictest3423448-21apt-get19:45:111
4577091320,7ptp4l441ktimers/323:25:013
3411900993230,1cyclictest0-21swapper/322:34:593
3411900993229,2cyclictest0-21swapper/322:46:593
3411900993227,4cyclictest3442290-21turbostat20:49:543
3411896993230,1cyclictest0-21swapper/222:14:592
3411896993230,1cyclictest0-21swapper/222:14:592
3411896993230,1cyclictest0-21swapper/220:54:592
3411896993229,2cyclictest0-21swapper/221:58:592
3411896993229,2cyclictest0-21swapper/200:27:582
3411900993129,1cyclictest0-21swapper/322:38:593
3411900993129,1cyclictest0-21swapper/300:09:003
3411900993127,3cyclictest3426370-21turbostat19:59:553
3411896993128,2cyclictest0-21swapper/223:01:592
341189699310,2cyclictest0-21swapper/221:21:582
341189699310,2cyclictest0-21swapper/219:47:582
3411900993028,1cyclictest0-21swapper/322:19:593
3411900993027,2cyclictest0-21swapper/322:59:593
3411900993026,1cyclictest0-21swapper/320:21:593
3411900993025,2cyclictest0-21swapper/319:45:123
341190099300,29cyclictest0-21swapper/319:16:593
341190099300,28cyclictest0-21swapper/319:20:023
3411896993028,1cyclictest0-21swapper/223:35:002
3411896993027,2cyclictest0-21swapper/223:55:122
3411896993027,2cyclictest0-21swapper/220:01:592
3411896993027,2cyclictest0-21swapper/219:33:592
3411896993027,2cyclictest0-21swapper/200:30:132
3411896993026,2cyclictest0-21swapper/223:05:592
341189699300,2cyclictest0-21swapper/219:35:112
341189699300,28cyclictest0-21swapper/200:20:132
4577091290,7ptp4l61490irq/134-eno1-TxRx-000:05:013
4577091290,6ptp4l441ktimers/323:30:013
4577091290,6ptp4l441ktimers/321:20:003
3411900992926,1cyclictest0-21swapper/320:35:123
341190099290,28cyclictest0-21swapper/323:10:023
341190099290,27cyclictest0-21swapper/321:25:023
3411896992927,1cyclictest0-21swapper/222:47:592
3411896992926,2cyclictest0-21swapper/221:53:592
3411896992926,2cyclictest0-21swapper/220:45:142
3411896992926,2cyclictest0-21swapper/220:05:122
3411896992926,2cyclictest0-21swapper/200:39:552
341189699290,27cyclictest0-21swapper/223:10:022
341189699290,27cyclictest0-21swapper/219:20:022
4577091280,6ptp4l61490irq/134-eno1-TxRx-000:00:013
4577091280,5ptp4l441ktimers/321:35:003
4577091280,5ptp4l441ktimers/300:15:003
3411900992826,1cyclictest0-21swapper/320:50:583
3411900992826,1cyclictest0-21swapper/320:18:593
3411900992826,1cyclictest0-21swapper/320:18:583
341190099280,27cyclictest0-21swapper/323:40:143
341190099280,27cyclictest0-21swapper/323:35:123
341190099280,27cyclictest0-21swapper/319:40:133
341190099280,26cyclictest0-21swapper/322:50:133
341190099280,26cyclictest0-21swapper/322:25:133
341190099280,26cyclictest0-21swapper/321:45:123
341190099280,26cyclictest0-21swapper/321:25:013
341190099280,26cyclictest0-21swapper/321:10:123
3411896992826,1cyclictest0-21swapper/223:35:112
3411896992825,2cyclictest0-21swapper/223:40:142
3411896992825,2cyclictest0-21swapper/222:50:132
3411896992825,2cyclictest0-21swapper/221:05:582
3411896992825,2cyclictest0-21swapper/220:31:002
3411896992825,2cyclictest0-21swapper/219:40:122
3411896992825,2cyclictest0-21swapper/200:05:122
341189699280,2cyclictest0-21swapper/222:15:112
341189699280,2cyclictest0-21swapper/219:55:112
341189699280,27cyclictest0-21swapper/223:00:022
341189699280,27cyclictest0-21swapper/221:10:132
341189699280,26cyclictest0-21swapper/220:15:132
341189699280,26cyclictest0-21swapper/220:15:132
4577091270,6ptp4l61490irq/134-eno1-TxRx-019:30:003
4577091270,5ptp4l61490irq/134-eno1-TxRx-022:45:003
3411900992725,1cyclictest0-21swapper/319:10:133
3411900992725,1cyclictest0-21swapper/300:15:593
341190099270,26cyclictest0-21swapper/323:48:583
341190099270,1cyclictest0-21swapper/319:35:103
3411896992724,2cyclictest0-21swapper/221:25:012
3411896992724,2cyclictest0-21swapper/219:17:592
3411896992723,2cyclictest0-21swapper/223:54:592
341189699270,26cyclictest0-21swapper/221:36:582
341189699270,25cyclictest0-21swapper/219:12:592
4577091260,5ptp4l61490irq/134-eno1-TxRx-021:00:013
3411900992624,1cyclictest0-21swapper/319:50:583
3411900992624,1cyclictest0-21swapper/319:50:583
3411896992624,1cyclictest0-21swapper/222:09:592
3411896992623,2cyclictest0-21swapper/221:01:002
3411896992623,2cyclictest0-21swapper/221:00:592
341189699260,24cyclictest0-21swapper/223:46:592
341189699260,24cyclictest0-21swapper/222:35:002
341189699260,24cyclictest0-21swapper/222:02:592
341189699260,24cyclictest0-21swapper/220:55:132
4577091250,3ptp4l61490irq/134-eno1-TxRx-021:59:563
4577091250,3ptp4l441ktimers/321:45:013
4577091250,3ptp4l441ktimers/320:14:563
3411900992523,1cyclictest0-21swapper/321:06:593
3411896992522,2cyclictest0-21swapper/222:20:592
3411896992522,2cyclictest0-21swapper/200:15:592
231999250,13rtkit-daemon3411808-21munin-run19:10:020
3411896992220,1cyclictest0-21swapper/223:24:582
3411894992115,4cyclictest0-21swapper/119:10:031
3411896991614,1cyclictest0-21swapper/223:30:002
3411896991412,1cyclictest0-21swapper/200:04:592
34118969950,4cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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