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2026-05-02 - 04:01
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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 highest latencies:
System rackeslot6.osadl.org (updated Sat May 02, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2115413999280,9cyclictest1213033-21systemd-journal23:15:010
2115417999078,8cyclictest2209484-40mandb00:00:011
2115413998880,5cyclictest2132851-21kworker/u8:1+events_unbound20:20:230
2115413998880,5cyclictest2132851-21kworker/u8:1+events_unbound20:20:230
2115413998676,7cyclictest2168869-21latency_hist21:55:010
2115417998476,6cyclictest2170477-21latency_hist22:00:011
2115417998475,6cyclictest2144473-21latency_hist20:40:011
2115417998373,8cyclictest2184846-21kworker/u8:3+flush-179:022:55:011
2115413998375,5cyclictest2154580-21kworker/u8:1+flush-179:021:35:220
2115413998275,5cyclictest2144983-21kworker/u8:0+flush-179:020:49:560
2115413998072,5cyclictest2183453-21kworker/u8:2+events_unbound22:50:010
2115413998072,5cyclictest2183453-21kworker/u8:2+events_unbound22:50:000
2115413997972,4cyclictest2209427-21kworker/u8:0+events_unbound00:15:010
2115417997770,5cyclictest2172066-21latency_hist22:05:011
2115417997565,7cyclictest2160914-21latency_hist21:30:011
2115413997469,3cyclictest2206317-21kworker/u8:1+flush-179:023:51:070
2115413997466,6cyclictest2142879-21latency_hist20:35:020
2115417997264,6cyclictest2176837-21latency_hist22:20:021
2115413997266,4cyclictest2209427-21kworker/u8:0+events_unbound00:00:010
2115417997059,9cyclictest2196728-21apt-get23:20:111
2115413997062,5cyclictest2152960-21latency_hist21:05:010
2115413996962,4cyclictest2121703-21kworker/u8:1+flush-179:019:40:190
2115413996958,9cyclictest2188105-21store22:55:010
2115413996862,4cyclictest2184846-21kworker/u8:3+flush-179:023:25:160
2115413996854,10cyclictest1213033-21systemd-journal22:25:000
2115413996854,10cyclictest1213033-21systemd-journal22:24:590
2115413996761,4cyclictest2118540-21kworker/u8:3+flush-179:019:45:300
2115413996756,9cyclictest2134433-21http20:10:000
2115417996651,12cyclictest2132851-21kworker/u8:1+events_unbound20:20:011
2115413996661,3cyclictest2114723-21kworker/u8:1+flush-179:019:15:150
2115413996658,6cyclictest2152933-21kworker/u8:2+events_unbound21:10:000
2115413996561,3cyclictest2218810-21kworker/u8:3+flush-179:000:34:550
2115413996557,6cyclictest2167261-21kworker/u8:0+flush-179:022:00:010
2115413996556,6cyclictest2128055-21kworker/u8:2+events_unbound20:15:230
2115413996457,4cyclictest2173674-21kworker/u8:0+events_unbound23:15:250
2115413996455,6cyclictest2209427-21kworker/u8:0+flush-179:000:05:270
2115417996354,6cyclictest2126448-21latency_hist19:45:021
2115413996357,4cyclictest2184846-21kworker/u8:3+events_unbound23:30:020
2115413996356,5cyclictest2221160-21kworker/u8:0+flush-179:000:35:190
2115413996353,8cyclictest2134918-21apt-get20:10:110
211542099620,60cyclictest0-21swapper/221:51:592
2115417996242,17cyclictest2173674-21kworker/u8:0+flush-179:022:29:591
2115413996254,5cyclictest2115270-21latency_hist19:10:020
2115417996151,7cyclictest2159327-21latency_hist21:25:011
2115413996156,4cyclictest2169535-21kworker/u8:4+flush-179:022:09:550
2115413996151,4cyclictest2173674-21kworker/u8:0+flush-179:023:05:000
2115420996057,2cyclictest0-21swapper/223:01:002
2115413996055,3cyclictest2160960-21kworker/u8:0+flush-179:021:35:010
2115413996053,5cyclictest2152933-21kworker/u8:2+flush-179:021:44:590
2115413995853,4cyclictest2118540-21kworker/u8:3+flush-179:019:34:550
2115413995851,5cyclictest2154580-21kworker/u8:1+events_unbound21:10:130
2115413995849,7cyclictest2191687-21apt-get23:05:090
2115423995755,1cyclictest0-21swapper/300:07:593
2115417995747,8cyclictest510-21rs:main1
2115413995751,4cyclictest2132851-21kworker/u8:1+events_unbound20:25:150
2115413995744,5cyclictest2184846-21kworker/u8:3+events_unbound23:45:000
2115420995653,2cyclictest0-21swapper/221:10:592
2115417995651,4cyclictest0-21swapper/100:10:591
2115413995650,5cyclictest2173687-21kworker/u8:2+flush-179:022:10:170
2115413995645,9cyclictest2216153-21apt-get00:20:130
2115413995645,9cyclictest2216153-21apt-get00:20:120
2115417995451,2cyclictest0-21swapper/100:18:581
2115417995445,7cyclictest2173907-21apt-get22:10:111
2115413995451,2cyclictest0-21swapper/021:21:590
2115413995247,4cyclictest2118540-21kworker/u8:3+events_unbound19:25:230
2115413995245,5cyclictest2141018-21kworker/u8:2+events_unbound20:40:290
2115413995240,10cyclictest1213033-21systemd-journal22:35:000
2115417995147,2cyclictest2178450-21basename22:25:001
2115417995147,2cyclictest2178450-21basename22:25:001
2115417995143,6cyclictest2157723-21latency_hist21:20:011
2115417995141,7cyclictest510-21rs:main1
2115413995146,4cyclictest2154580-21kworker/u8:1+flush-179:021:45:210
2115413995045,4cyclictest2141018-21kworker/u8:2+events_unbound20:50:010
2115413995045,4cyclictest2124907-21kworker/u8:0+events_unbound19:50:250
2115413995044,4cyclictest2194840-21kworker/u8:2+flush-179:023:20:250
2115413995038,10cyclictest1213033-21systemd-journal20:40:000
4577091490,13ptp4l441ktimers/319:10:003
2115420994945,2cyclictest0-21swapper/223:13:592
2115413994944,4cyclictest2152933-21kworker/u8:2+flush-179:021:29:550
2115413994940,5cyclictest2124845-21latency_hist19:40:000
2115417994844,2cyclictest714-21Xorg21:46:591
2115417994842,4cyclictest281ktimers/121:10:121
2115417994840,6cyclictest2152933-21kworker/u8:2+flush-179:021:05:231
2115417994814,32cyclictest2134775-21apt-config20:10:011
2115413994843,4cyclictest2173674-21kworker/u8:0+flush-179:022:55:180
2115413994842,5cyclictest2212735-21kworker/u8:2+flush-179:000:19:560
2115413994839,7cyclictest2201485-21kworker/u8:2+events_unbound23:45:180
2115417994742,3cyclictest0-21swapper/123:30:021
2115417994712,26cyclictest2119163-21grep19:20:141
2115413994742,4cyclictest2212735-21kworker/u8:2+flush-179:000:25:150
2115413994742,4cyclictest2149041-21kworker/u8:1+events_unbound20:55:240
2115413994741,5cyclictest2169535-21kworker/u8:4+flush-179:022:19:550
2115413994741,4cyclictest2130683-21kworker/u8:3+flush-179:020:00:000
2115413994741,4cyclictest2130683-21kworker/u8:3+flush-179:020:00:000
2115417994634,9cyclictest2141038-21apt-get20:30:001
2115413994639,5cyclictest2132817-21latency_hist20:05:020
2115417994538,5cyclictest2130683-21kworker/u8:3+events_unbound20:30:241
2115417994535,7cyclictest0-21swapper/122:55:141
211541799448,33cyclictest0-21swapper/122:05:121
2115413994437,5cyclictest2102093-21kworker/u8:0+events_unbound19:15:010
2115417994338,3cyclictest2129655-21systemd-run19:55:011
2115417994337,4cyclictest2211094-21run-parts00:04:011
2115417994331,9cyclictest1213033-21systemd-journal19:20:001
2115423994240,1cyclictest0-21swapper/322:06:593
2115420994239,2cyclictest0-21swapper/223:06:592
2115417994238,2cyclictest2138115-21apt-get20:20:121
2115417994238,2cyclictest2138115-21apt-get20:20:121
2115417994234,5cyclictest0-21swapper/122:34:591
211541799420,5cyclictest2193020-21turbostat23:14:561
2115413994238,3cyclictest2211069-21systemd00:04:000
2115413994237,4cyclictest2173674-21kworker/u8:0+events_unbound23:35:140
2115413994237,4cyclictest2118446-21kworker/u8:2+flush-179:019:25:000
211542099410,1cyclictest0-21swapper/222:59:592
2115417994135,4cyclictest2148430-21apt-get20:50:091
2115417994115,11cyclictest2217542-21chmod00:25:011
2115417994115,11cyclictest2217542-21chmod00:25:001
211541399410,39cyclictest2183218-21turbostat22:44:560
2115417994038,1cyclictest714-21Xorg19:32:591
2115417994037,2cyclictest2168882-21perf21:55:011
2115417994016,9cyclictest714-21Xorg20:01:591
211541799401,2cyclictest2121681-21perf19:30:001
2115417994012,14cyclictest2151398-21sendmail-msp21:00:001
211541799400,39cyclictest0-21swapper/100:05:591
211542099390,36cyclictest0-21swapper/200:00:012
2115417993932,5cyclictest2178669-21kworker/u8:1+flush-179:022:35:161
2115417993918,11cyclictest0-21swapper/100:35:001
2115417993916,7cyclictest714-21Xorg19:48:591
2115417993914,9cyclictest2184840-21munin-run22:45:011
2115417993914,10cyclictest2205677-21ntp_192.168.11423:45:211
2115417993911,3cyclictest0-21swapper/121:03:591
211541799390,37cyclictest714-21Xorg23:32:591
2115413993933,5cyclictest2178669-21kworker/u8:1+flush-179:022:25:240
211541799388,16cyclictest0-21swapper/100:40:011
2115417993833,3cyclictest2219359-21systemd-run00:30:001
2115417993831,5cyclictest2196206-21latency_hist23:20:001
2115417993815,8cyclictest714-21Xorg22:47:001
2115417993815,8cyclictest714-21Xorg22:46:591
2115417993815,7cyclictest2130669-21ntp_states19:55:201
2115417993815,7cyclictest2130669-21ntp_states19:55:201
2115420993733,2cyclictest0-21swapper/222:49:562
2115420993733,2cyclictest0-21swapper/222:49:562
211542099370,35cyclictest0-21swapper/223:41:002
211542099370,35cyclictest0-21swapper/219:21:592
2115417993714,8cyclictest2164654-21diskstats21:40:141
2115417993714,8cyclictest2124939-21latency_hist19:40:001
2115417993714,7cyclictest2191970-21df_inode23:05:131
2115417993712,12cyclictest2190202-21cat23:00:151
2115413993732,4cyclictest2178669-21kworker/u8:1+events_unbound22:35:220
4577091360,28ptp4l61490irq/134-eno1-TxRx-022:35:123
2115423993634,1cyclictest0-21swapper/322:44:003
211542399360,35cyclictest0-21swapper/323:51:593
211542399360,35cyclictest0-21swapper/320:44:553
211542399360,35cyclictest0-21swapper/320:11:593
211542399360,1cyclictest0-21swapper/323:27:593
211542399360,1cyclictest0-21swapper/319:15:003
2115420993632,2cyclictest0-21swapper/223:48:582
211541799361,33cyclictest2144498-21apt-get20:40:031
2115413993631,4cyclictest2154580-21kworker/u8:1+events_unbound21:15:230
2115413993628,6cyclictest1213033-21systemd-journal22:03:560
2115423993533,1cyclictest0-21swapper/323:37:593
2115423993533,1cyclictest0-21swapper/321:38:593
2115423993533,1cyclictest0-21swapper/319:36:593
211542399350,1cyclictest0-21swapper/321:21:593
2115417993510,13cyclictest2116367-21open_inodes19:10:231
4577091340,6ptp4l441ktimers/321:20:003
2115423993432,1cyclictest0-21swapper/323:45:593
2115423993432,1cyclictest0-21swapper/300:38:593
2115420993431,2cyclictest0-21swapper/221:57:592
2115420993431,2cyclictest0-21swapper/221:33:592
211542099340,1cyclictest0-21swapper/200:39:552
2115417993429,3cyclictest0-21swapper/123:40:001
2115417993420,4cyclictest2207891-21systemd-run23:55:001
2115423993331,1cyclictest0-21swapper/321:09:543
2115423993328,4cyclictest2196202-21turbostat23:20:003
2115420993330,2cyclictest0-21swapper/222:42:592
2115420993330,2cyclictest0-21swapper/222:05:002
2115420993330,2cyclictest0-21swapper/221:19:552
2115420993330,2cyclictest0-21swapper/219:20:012
4577091320,4ptp4l441ktimers/319:45:013
2115420993229,2cyclictest0-21swapper/222:51:582
2115420993229,2cyclictest0-21swapper/220:08:592
2115420993129,1cyclictest0-21swapper/220:49:592
2115417993121,6cyclictest714-21Xorg23:43:591
2115423993028,1cyclictest0-21swapper/322:19:593
2115423993027,2cyclictest0-21swapper/321:40:123
211542399300,29cyclictest0-21swapper/319:30:133
211542399300,28cyclictest0-21swapper/322:00:123
211542399300,28cyclictest0-21swapper/320:45:133
211542099300,2cyclictest0-21swapper/220:30:122
211542099300,28cyclictest0-21swapper/221:25:132
211542099300,28cyclictest0-21swapper/200:30:132
211541799300,28cyclictest714-21Xorg21:30:591
4577091290,7ptp4l441ktimers/322:25:013
4577091290,7ptp4l441ktimers/322:25:003
4577091290,7ptp4l441ktimers/322:15:013
4577091290,7ptp4l441ktimers/320:25:003
4577091290,7ptp4l441ktimers/320:25:003
4577091290,6ptp4l441ktimers/322:35:003
4577091290,6ptp4l441ktimers/319:15:003
2115423992927,1cyclictest0-21swapper/320:56:593
2115423992926,2cyclictest0-21swapper/323:20:013
2115423992926,2cyclictest0-21swapper/321:00:133
211542399290,28cyclictest0-21swapper/323:55:133
211542399290,28cyclictest0-21swapper/323:30:123
211542399290,28cyclictest0-21swapper/322:25:133
211542399290,27cyclictest0-21swapper/300:20:143
211542399290,27cyclictest0-21swapper/300:20:133
211542399290,1cyclictest0-21swapper/300:25:023
2115420992927,1cyclictest0-21swapper/223:35:132
2115420992926,2cyclictest0-21swapper/223:30:022
2115420992926,2cyclictest0-21swapper/220:45:002
2115420992926,2cyclictest0-21swapper/220:20:122
2115420992926,2cyclictest0-21swapper/220:20:122
211542099290,2cyclictest0-21swapper/219:50:132
211542099290,27cyclictest0-21swapper/222:28:592
211542099290,27cyclictest0-21swapper/200:05:582
211542099290,27cyclictest0-21swapper/200:00:132
4577091280,7ptp4l441ktimers/321:29:593
4577091280,7ptp4l441ktimers/321:15:003
4577091280,6ptp4l441ktimers/300:04:593
4577091280,5ptp4l441ktimers/320:04:573
4577091280,5ptp4l441ktimers/320:00:013
4577091280,5ptp4l441ktimers/320:00:013
2115423992826,1cyclictest0-21swapper/320:50:013
2115423992826,1cyclictest0-21swapper/320:30:023
2115423992825,2cyclictest0-21swapper/322:55:013
211542399280,2cyclictest0-21swapper/320:35:113
211542399280,27cyclictest2167292-21turbostat21:50:003
211542399280,26cyclictest0-21swapper/322:50:113
211542399280,26cyclictest0-21swapper/320:10:013
211542399280,26cyclictest0-21swapper/319:45:203
2115420992826,1cyclictest0-21swapper/220:30:012
2115420992825,2cyclictest0-21swapper/222:38:582
2115420992825,2cyclictest0-21swapper/221:42:592
2115420992825,2cyclictest0-21swapper/220:03:592
2115420992825,2cyclictest0-21swapper/219:25:112
211542099280,27cyclictest0-21swapper/220:10:022
211542099280,26cyclictest0-21swapper/223:25:122
211542099280,26cyclictest0-21swapper/222:20:122
211542099280,26cyclictest0-21swapper/222:20:112
211542099280,26cyclictest0-21swapper/219:35:122
211542099280,26cyclictest0-21swapper/200:25:122
211542099280,1cyclictest0-21swapper/220:37:592
2115417992818,7cyclictest714-21Xorg21:36:581
4577091270,6ptp4l441ktimers/321:55:013
4577091270,5ptp4l441ktimers/323:10:003
4577091270,5ptp4l441ktimers/323:05:013
4577091270,5ptp4l441ktimers/321:34:553
4577091270,5ptp4l441ktimers/320:20:013
4577091270,5ptp4l441ktimers/319:55:013
4577091270,5ptp4l441ktimers/300:35:003
211542399270,1cyclictest0-21swapper/320:25:123
2115420992724,2cyclictest0-21swapper/222:18:002
2115420992724,2cyclictest0-21swapper/221:21:592
2115420992724,2cyclictest0-21swapper/200:13:592
211542099270,25cyclictest0-21swapper/221:48:002
211542099270,1cyclictest0-21swapper/222:34:002
211542099270,1cyclictest0-21swapper/220:50:112
4577091260,6ptp4l441ktimers/323:15:013
4577091260,6ptp4l441ktimers/300:20:003
4577091260,5ptp4l441ktimers/321:59:563
4577091260,5ptp4l441ktimers/300:14:553
4577091260,4ptp4l441ktimers/322:49:563
4577091260,4ptp4l441ktimers/322:49:553
4577091260,4ptp4l441ktimers/319:25:013
211542399260,24cyclictest0-21swapper/319:25:583
2115420992623,2cyclictest0-21swapper/223:18:582
2115420992623,2cyclictest0-21swapper/219:59:552
2115420992623,2cyclictest0-21swapper/219:59:552
211542099260,2cyclictest0-21swapper/220:58:592
211542099260,24cyclictest0-21swapper/200:19:562
2115420992522,2cyclictest0-21swapper/222:07:582
2115420992522,2cyclictest0-21swapper/219:41:592
4577091240,4ptp4l441ktimers/323:44:553
231999240,13rtkit-daemon2114395-21perl19:05:201
2115420992422,1cyclictest0-21swapper/221:39:592
2115420992321,1cyclictest0-21swapper/223:54:592
2115420992220,1cyclictest0-21swapper/219:34:592
2115420992219,2cyclictest0-21swapper/220:18:592
2115420992018,1cyclictest0-21swapper/221:05:132
2115420991916,2cyclictest0-21swapper/219:48:592
2115420991715,1cyclictest0-21swapper/200:25:002
2115420991715,1cyclictest0-21swapper/200:25:002
2115420991713,2cyclictest0-21swapper/222:14:552
2115420991310,2cyclictest0-21swapper/221:02:592
21154209986,1cyclictest0-21swapper/223:25:002
21154209970,6cyclictest0-21swapper/219:12:292
21154209920,1cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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