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2026-08-10 - 05:10
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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 Mon Aug 10, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
213470099149140,6cyclictest2219765-21apt-get23:30:031
213470099147134,10cyclictest2194834-21apt-get22:15:031
213470099140130,7cyclictest2213385-21latency_hist23:10:001
213469899140132,6cyclictest2195317-21kworker/u8:2+events_unbound23:05:020
213470099139131,5cyclictest2190039-21kworker/u8:1+events_unbound22:15:011
213469899139130,6cyclictest2195317-21kworker/u8:2+events_unbound22:40:030
2134700991341,128cyclictest1-21systemd00:00:011
213469899134123,8cyclictest2224801-21latency_hist23:45:010
213469899133126,4cyclictest2195317-21kworker/u8:2+events_unbound22:40:010
213469899132123,6cyclictest2226621-21kworker/u8:0+flush-179:023:54:590
213469899132121,8cyclictest2214949-21kworker/u8:0+events_unbound23:25:190
213469899131120,8cyclictest2186609-21latency_hist21:50:010
213469899129121,6cyclictest2162154-21apt-get20:33:340
213469899129117,9cyclictest2216570-21latency_hist23:20:010
213469899128121,5cyclictest2190039-21kworker/u8:1+events_unbound22:10:000
213470099127104,20cyclictest2146229-21apt-get19:45:111
213469899124119,4cyclictest2234435-21kworker/u8:3+events_unbound00:20:010
213469899124114,8cyclictest1213033-21systemd-journal00:04:000
21347009912398,22cyclictest2141193-21latency_hist19:30:011
213470099123110,9cyclictest2214949-21kworker/u8:0+flush-179:023:20:221
213470099122111,8cyclictest2139604-21latency_hist19:25:011
213469899122117,3cyclictest2165535-21kworker/u8:1+flush-179:021:00:240
213469899122115,5cyclictest2203030-21kworker/u8:0+flush-179:023:00:000
213470099121108,9cyclictest2177063-21latency_hist21:20:011
213469899121115,4cyclictest2135840-21kworker/u8:1+flush-179:019:15:180
21347009911893,22cyclictest2232811-21latency_hist00:10:011
21347009911893,22cyclictest2232811-21latency_hist00:10:011
213469899118111,5cyclictest2181278-21kworker/u8:1+events_unbound21:45:000
213469899118111,5cyclictest2141169-21kworker/u8:1+events_unbound19:35:260
213469899117110,4cyclictest2181278-21kworker/u8:1+flush-179:021:35:220
213469899117109,6cyclictest2165535-21kworker/u8:1+flush-179:020:45:030
213470299116107,6cyclictest2223222-21turbostat23:40:003
213470099116108,5cyclictest2201691-21/usr/sbin/munin22:35:231
213470099116105,7cyclictest2195317-21kworker/u8:2+flush-179:022:20:251
213469899116110,4cyclictest2214949-21kworker/u8:0+events_unbound23:20:240
213469899116108,6cyclictest2165535-21kworker/u8:1+flush-179:021:20:000
213470099115102,11cyclictest1213033-21systemd-journal19:55:011
213469899115108,5cyclictest2227947-21kworker/u8:1+flush-179:000:05:250
213469899115108,5cyclictest2227947-21kworker/u8:1+flush-179:000:05:250
213469899115101,5cyclictest2195317-21kworker/u8:2+flush-179:022:45:240
2134698991150,112cyclictest2223247-21true23:40:000
21346989911492,13cyclictest2190039-21kworker/u8:1+flush-179:022:00:230
213469899114103,8cyclictest2203030-21kworker/u8:0+flush-179:022:50:190
213470099113100,9cyclictest2172314-21kworker/u8:3+flush-179:021:10:251
213469899113105,6cyclictest2177667-21kworker/u8:0+events_unbound21:30:230
21347009911199,8cyclictest2177667-21kworker/u8:0+flush-179:021:30:261
21347009911198,9cyclictest2177667-21kworker/u8:0+flush-179:021:40:231
21347009911195,12cyclictest2234435-21kworker/u8:3+flush-179:000:25:251
213469899111104,5cyclictest2163774-21kworker/u8:0+flush-179:020:55:290
21347009910984,22cyclictest2170419-21latency_hist21:00:011
213470099109103,4cyclictest2242321-21kworker/u8:2+flush-179:000:40:011
213469899109103,4cyclictest2195317-21kworker/u8:2+flush-179:023:05:210
213469899109102,5cyclictest2160540-21kworker/u8:1+flush-179:020:35:210
213470099108102,5cyclictest2203030-21kworker/u8:0+events_unbound22:55:001
213469899108102,4cyclictest2195317-21kworker/u8:2+flush-179:023:10:230
21347009910669,27cyclictest2142780-21latency_hist19:35:011
21346989910699,5cyclictest2146009-21kworker/u8:3+events_unbound20:15:140
21346989910699,4cyclictest2227947-21kworker/u8:1+flush-179:000:10:110
213469899106100,4cyclictest2177667-21kworker/u8:0+flush-179:021:25:140
21346989910598,5cyclictest2237836-21kworker/u8:1+flush-179:000:35:190
21346989910591,7cyclictest2214949-21kworker/u8:0+events_unbound23:30:210
21347009910394,6cyclictest2221590-21kworker/u8:3+flush-179:023:35:161
21347009910391,9cyclictest2165401-21apt-get20:45:011
21346989910397,4cyclictest2156155-21kworker/u8:2+flush-179:020:25:260
21346989910396,5cyclictest2237836-21kworker/u8:1+flush-179:000:30:250
21346989910391,8cyclictest2149129-21kworker/u8:1+events_unbound20:10:200
21346989910295,5cyclictest2149129-21kworker/u8:1+flush-179:020:00:250
21346989910293,6cyclictest2149129-21kworker/u8:1+events_unbound20:05:150
21346989910192,6cyclictest2221590-21kworker/u8:3+events_unbound23:55:150
21346989910189,9cyclictest2165392-21latency_hist20:45:010
21346989910094,4cyclictest2165535-21kworker/u8:1+flush-179:020:50:230
21346989910092,5cyclictest2190039-21kworker/u8:1+flush-179:022:25:210
2134698999993,4cyclictest2233048-21kworker/u8:0+flush-179:000:20:140
2134698999991,5cyclictest2183391-21kworker/u8:2+events_unbound21:55:140
2134698999991,5cyclictest2135840-21kworker/u8:1+flush-179:019:10:210
2134700999888,7cyclictest2229624-21kworker/u8:2+flush-179:000:00:231
2134698999882,4cyclictest2185058-21kworker/u8:3+events_unbound21:50:230
2134700999785,9cyclictest2165535-21kworker/u8:1+flush-179:020:50:201
2134700999686,7cyclictest2153930-21latency_hist20:10:011
2134700999672,21cyclictest2162199-21latency_hist20:35:011
2134700999585,7cyclictest2195317-21kworker/u8:2+events_unbound22:45:011
2134698999585,8cyclictest510-21rs:main0
2134698999582,5cyclictest2221590-21kworker/u8:3+events_unbound23:45:220
2134700999486,5cyclictest2183391-21kworker/u8:2+flush-179:021:55:191
2134698999386,5cyclictest2146009-21kworker/u8:3+flush-179:019:50:230
2134698999386,4cyclictest2237836-21kworker/u8:1+flush-179:000:25:260
2134698999286,4cyclictest2165535-21kworker/u8:1+flush-179:021:05:150
2134698999279,4cyclictest2120834-21kworker/u8:0+events_unbound19:40:220
2134700999174,14cyclictest2177667-21kworker/u8:0+flush-179:021:35:201
2134698999185,4cyclictest2156154-21kworker/u8:0+flush-179:020:20:130
2134698999181,8cyclictest1213033-21systemd-journal22:35:000
2134698999084,3cyclictest2165535-21kworker/u8:1+events_unbound21:10:260
2134698998981,6cyclictest2149401-21apt-get19:55:140
2134700998881,5cyclictest2210205-21apt-get23:00:111
2134698998782,4cyclictest2165535-21kworker/u8:1+flush-179:021:20:270
2134698998679,5cyclictest2195317-21kworker/u8:2+events_unbound22:20:230
2134700998577,5cyclictest2156155-21kworker/u8:2+flush-179:020:25:261
2134698998477,5cyclictest2135840-21kworker/u8:1+flush-179:019:20:220
2134700998373,7cyclictest1213033-21systemd-journal21:00:021
2134700998274,5cyclictest2233048-21kworker/u8:0+flush-179:000:20:211
2134700998274,5cyclictest2165535-21kworker/u8:1+flush-179:021:20:221
2134700998272,8cyclictest2221581-21kworker/u8:2+flush-179:023:50:001
2134702998052,27cyclictest0-21swapper/321:45:593
2134700997970,6cyclictest2190039-21kworker/u8:1+flush-179:022:05:231
2134700997968,7cyclictest2195317-21kworker/u8:2+flush-179:022:30:201
2134700997870,6cyclictest2203030-21kworker/u8:0+flush-179:022:55:241
2134700997869,6cyclictest2135840-21kworker/u8:1+flush-179:019:10:241
2134700997565,8cyclictest2195317-21kworker/u8:2+flush-179:022:30:001
2134700997465,6cyclictest2152344-21latency_hist20:05:001
2134700997367,4cyclictest2177667-21kworker/u8:0+events_unbound21:25:191
2134700997363,8cyclictest2219889-21store23:30:011
2134700997361,9cyclictest2208376-21kworker/u8:3+flush-179:023:15:191
2134700997266,4cyclictest2156154-21kworker/u8:0+flush-179:020:20:241
2134700997263,6cyclictest2135840-21kworker/u8:1+flush-179:019:15:251
2134700997262,8cyclictest2141169-21kworker/u8:1+flush-179:019:45:011
2134700997166,4cyclictest2188229-21kworker/u8:0+events_unbound22:00:281
2134700997164,5cyclictest2183391-21kworker/u8:2+flush-179:021:50:171
2134698997166,4cyclictest2141169-21kworker/u8:1+events_unbound19:30:250
2134700996961,6cyclictest2141169-21kworker/u8:1+events_unbound19:35:191
2134700996960,7cyclictest2203030-21kworker/u8:0+events_unbound22:50:001
2134700996861,5cyclictest2233048-21kworker/u8:0+flush-179:000:15:241
2134700996760,5cyclictest2226621-21kworker/u8:0+flush-179:023:50:221
2134700996754,10cyclictest1213033-21systemd-journal20:50:001
2134698996763,3cyclictest2141169-21kworker/u8:1+flush-179:019:45:200
2134700996652,11cyclictest2195317-21kworker/u8:2+flush-179:023:10:131
2134698996658,6cyclictest2139581-21kworker/u8:3+flush-179:019:25:260
2134700996554,6cyclictest2227947-21kworker/u8:1+flush-179:000:10:161
2134698996459,4cyclictest2195317-21kworker/u8:2+flush-179:022:16:520
2134700996357,5cyclictest2160540-21kworker/u8:1+flush-179:020:35:161
2134700996351,9cyclictest1213033-21systemd-journal20:11:331
2134701996231,2cyclictest0-21swapper/219:42:592
2134700996256,5cyclictest2185058-21kworker/u8:3+flush-179:021:45:241
2134700996054,5cyclictest2169061-21kworker/u8:2+flush-179:021:05:251
2134700996052,6cyclictest2155751-21/usr/sbin/munin20:15:161
2134700995748,7cyclictest2237836-21kworker/u8:1+flush-179:000:30:231
2134700995445,7cyclictest1213033-21systemd-journal23:44:341
4577091490,13ptp4l441ktimers/319:09:563
2134700994538,5cyclictest2149129-21kworker/u8:1+flush-179:020:00:011
2134701994442,1cyclictest0-21swapper/222:05:002
2134701994139,1cyclictest0-21swapper/222:09:582
2134701994138,2cyclictest0-21swapper/219:56:582
2134702994034,5cyclictest0-21swapper/319:29:003
213470199390,37cyclictest0-21swapper/223:08:592
213470199380,36cyclictest0-21swapper/220:45:592
213470199380,35cyclictest0-21swapper/219:14:562
231999370,9rtkit-daemon688-21lldpd19:05:301
2134702993733,3cyclictest2227974-21turbostat23:59:553
2134701993734,2cyclictest0-21swapper/222:34:592
4577091360,3ptp4l61490irq/134-eno1-TxRx-021:35:123
2134702993634,1cyclictest0-21swapper/321:42:003
2134702993629,6cyclictest0-21swapper/322:54:593
2134701993633,2cyclictest0-21swapper/219:17:592
213470199360,1cyclictest0-21swapper/222:48:592
213470199360,1cyclictest0-21swapper/222:19:592
2134702993533,1cyclictest0-21swapper/322:38:593
213470299350,1cyclictest0-21swapper/323:47:593
213470299350,1cyclictest0-21swapper/321:53:583
213470299350,1cyclictest0-21swapper/300:35:583
2134701993533,1cyclictest0-21swapper/220:20:592
2134701993532,2cyclictest0-21swapper/221:30:002
2134701993532,2cyclictest0-21swapper/220:01:002
2134702993431,2cyclictest0-21swapper/322:21:593
2134701993432,1cyclictest0-21swapper/221:24:582
2134701993431,2cyclictest0-21swapper/200:12:002
4577091330,2ptp4l441ktimers/323:50:133
2134702993331,1cyclictest0-21swapper/320:08:583
2134702993331,1cyclictest0-21swapper/300:04:593
2134701993331,1cyclictest0-21swapper/223:04:592
2134701993331,1cyclictest0-21swapper/221:15:002
2134701993330,2cyclictest0-21swapper/223:41:002
2134701993330,2cyclictest0-21swapper/219:37:592
2134702993230,1cyclictest0-21swapper/320:26:583
2134702993225,6cyclictest0-21swapper/320:17:003
2134701993229,2cyclictest0-21swapper/222:43:592
2134701993229,2cyclictest0-21swapper/222:20:592
2134702993129,1cyclictest0-21swapper/320:14:543
2134702993129,1cyclictest0-21swapper/319:23:593
2134702993127,3cyclictest2175470-21turbostat21:19:543
2134702993126,4cyclictest2201476-21turbostat22:35:003
2134702993126,4cyclictest0-21swapper/321:20:143
2134702993125,5cyclictest0-21swapper/322:25:133
2134702993125,5cyclictest0-21swapper/321:05:133
2134702993123,7cyclictest0-21swapper/300:05:183
2134702993123,7cyclictest0-21swapper/300:05:183
2134701993129,1cyclictest0-21swapper/220:34:592
2134701993128,2cyclictest0-21swapper/221:19:592
2134702993028,1cyclictest0-21swapper/323:12:593
2134702993028,1cyclictest0-21swapper/319:41:593
2134702993028,1cyclictest0-21swapper/319:34:563
213470299300,29cyclictest0-21swapper/321:58:003
213470299300,28cyclictest0-21swapper/323:05:023
213470299300,28cyclictest0-21swapper/322:15:023
213470299300,28cyclictest0-21swapper/320:45:033
213470299300,28cyclictest0-21swapper/320:25:013
2134701993027,2cyclictest0-21swapper/223:50:132
2134701993027,2cyclictest0-21swapper/223:30:142
2134701993027,2cyclictest0-21swapper/222:52:002
2134701993027,2cyclictest0-21swapper/219:24:552
4577091290,7ptp4l441ktimers/320:55:013
213470299290,28cyclictest0-21swapper/300:10:133
213470299290,1cyclictest0-21swapper/323:30:023
213470299290,1cyclictest0-21swapper/322:10:033
2134701992926,2cyclictest0-21swapper/222:55:142
2134701992926,2cyclictest0-21swapper/221:00:022
2134701992926,2cyclictest0-21swapper/219:50:142
2134701992926,2cyclictest0-21swapper/200:25:152
2134701992926,2cyclictest0-21swapper/200:15:142
213470199290,28cyclictest0-21swapper/221:50:132
213470199290,28cyclictest0-21swapper/220:05:142
4577091280,6ptp4l61490irq/134-eno1-TxRx-019:15:003
4577091280,6ptp4l441ktimers/323:05:013
4577091280,6ptp4l441ktimers/320:35:013
4577091280,6ptp4l441ktimers/300:35:003
4577091280,5ptp4l61490irq/134-eno1-TxRx-023:00:013
2134702992825,2cyclictest0-21swapper/323:25:123
213470299280,27cyclictest0-21swapper/320:40:143
213470299280,26cyclictest0-21swapper/322:45:043
213470299280,26cyclictest0-21swapper/321:10:163
213470299280,26cyclictest0-21swapper/321:00:033
213470299280,26cyclictest0-21swapper/320:00:223
2134701992825,2cyclictest0-21swapper/220:45:022
2134701992825,2cyclictest0-21swapper/220:35:142
2134701992825,2cyclictest0-21swapper/220:25:122
2134701992825,2cyclictest0-21swapper/200:21:592
213470199280,27cyclictest0-21swapper/222:10:012
213470199280,26cyclictest0-21swapper/223:35:132
213470199280,26cyclictest0-21swapper/222:29:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-020:00:013
2134702992725,1cyclictest0-21swapper/323:40:133
2134702992725,1cyclictest0-21swapper/322:00:153
213470299270,26cyclictest0-21swapper/321:31:593
213470299270,1cyclictest0-21swapper/323:17:593
2134701992724,2cyclictest0-21swapper/221:38:582
2134701992724,2cyclictest0-21swapper/200:37:592
213470199270,25cyclictest0-21swapper/220:50:112
4577091260,6ptp4l61490irq/134-eno1-TxRx-020:59:553
4577091260,6ptp4l61490irq/134-eno1-TxRx-019:19:553
4577091260,5ptp4l441ktimers/300:24:563
2134702992624,1cyclictest0-21swapper/319:51:583
2134702992619,1cyclictest0-21swapper/322:40:123
2134702992619,1cyclictest0-21swapper/300:16:593
213470299260,25cyclictest2180246-21turbostat21:30:003
213470299260,25cyclictest2144381-21turbostat19:39:593
213470299260,1cyclictest0-21swapper/319:48:593
2134701992623,2cyclictest0-21swapper/221:59:592
2134701992623,2cyclictest0-21swapper/200:01:592
213470199260,2cyclictest0-21swapper/221:33:592
213470199260,24cyclictest0-21swapper/221:00:002
213470199260,24cyclictest0-21swapper/220:18:592
213470199260,24cyclictest0-21swapper/220:14:592
213470199260,24cyclictest0-21swapper/200:34:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-023:24:563
4577091250,5ptp4l61490irq/134-eno1-TxRx-020:40:013
2134701992522,2cyclictest0-21swapper/223:57:582
213470199250,2cyclictest0-21swapper/223:22:592
213470199250,2cyclictest0-21swapper/221:08:582
213470199250,2cyclictest0-21swapper/200:06:592
213470199250,2cyclictest0-21swapper/200:06:592
4577091240,4ptp4l61490irq/134-eno1-TxRx-000:29:563
2134701992421,2cyclictest0-21swapper/219:32:002
2134702992321,1cyclictest0-21swapper/322:08:583
2134701992320,2cyclictest0-21swapper/223:10:122
2134701992219,2cyclictest0-21swapper/223:45:592
2134701992219,2cyclictest0-21swapper/219:48:002
2134701992118,2cyclictest0-21swapper/221:45:152
2134701992118,2cyclictest0-21swapper/221:40:582
2134698992112,7cyclictest2134514-21latency_hist19:10:030
2134701991815,2cyclictest0-21swapper/223:16:592
2134701991715,1cyclictest0-21swapper/223:30:002
2134701991613,2cyclictest0-21swapper/222:36:592
21347019996,2cyclictest0-21swapper/219:26:582
21347019930,2cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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