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2026-05-21 - 18:27
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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 Thu May 21, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
150719799127110,12cyclictest1213033-21systemd-journal10:30:001
15071979910798,6cyclictest1577719-21latency_hist10:50:011
15071979910599,5cyclictest1502604-21kworker/u8:3+flush-179:007:35:211
15071969910392,7cyclictest1600833-21kworker/u8:3+flush-179:012:05:000
15071969910092,5cyclictest1544330-21kworker/u8:3+flush-179:009:25:220
1507197999991,6cyclictest1542658-21kworker/u8:1+flush-179:009:25:001
1507197999691,4cyclictest1599168-21kworker/u8:2+flush-179:012:35:231
1507197999589,4cyclictest1591117-21kworker/u8:3+events_unbound11:35:151
1507196999579,10cyclictest1486671-21kworker/u8:1+flush-179:007:30:160
1507197999386,5cyclictest1520363-21kworker/u8:0+events_unbound07:55:141
1507197999382,7cyclictest1611122-21latency_hist12:30:001
1507196999381,9cyclictest1536062-21latency_hist08:40:010
1507196999381,9cyclictest1536062-21latency_hist08:40:010
1507197999288,3cyclictest1544330-21kworker/u8:3+events_unbound09:10:261
1507197999286,4cyclictest1600833-21kworker/u8:3+events_unbound12:05:131
1507197999284,6cyclictest1555391-21kworker/u8:1+events_unbound09:50:221
1507197999186,4cyclictest1526533-21kworker/u8:0+flush-179:008:40:231
1507197999085,4cyclictest1555391-21kworker/u8:1+events_unbound09:40:231
1507197998983,5cyclictest1600833-21kworker/u8:3+events_unbound12:15:031
1507197998983,5cyclictest1600833-21kworker/u8:3+events_unbound12:15:021
1507197998883,4cyclictest1594467-21kworker/u8:1+events_unbound11:40:231
1507197998883,4cyclictest1533106-21kworker/u8:3+events_unbound08:30:231
1507197998883,4cyclictest1502604-21kworker/u8:3+events_unbound07:15:251
1507197998882,4cyclictest1552285-21kworker/u8:0+events_unbound09:35:201
1507196998879,6cyclictest1563382-21kworker/u8:0+flush-179:010:55:210
1507197998782,4cyclictest1502604-21kworker/u8:3+events_unbound07:40:231
1507197998774,11cyclictest1605572-21apt-get12:15:001
1507197998676,7cyclictest1524913-21latency_hist08:05:011
1507196998677,6cyclictest1587529-21latency_hist11:20:010
1507197998579,4cyclictest1563382-21kworker/u8:0+events_unbound10:05:211
1507196998570,11cyclictest1609297-21apt-get12:25:010
1507197998479,4cyclictest1563382-21kworker/u8:0+events_unbound10:30:241
1507196998476,5cyclictest1502604-21kworker/u8:3+flush-179:007:15:180
1507196998375,5cyclictest1531268-21kworker/u8:1+events_unbound08:25:010
1507197998277,3cyclictest1599168-21kworker/u8:2+events_unbound12:00:241
1507196998275,4cyclictest1537634-21kworker/u8:3+flush-179:008:50:140
1507197998176,4cyclictest1599168-21kworker/u8:2+events_unbound12:20:241
1507197998176,3cyclictest1537634-21kworker/u8:3+flush-179:008:50:191
1507197998175,4cyclictest1591117-21kworker/u8:3+events_unbound11:45:211
1507196998174,4cyclictest1521749-21kworker/u8:1+flush-179:007:55:220
1507196998173,5cyclictest1502604-21kworker/u8:3+flush-179:007:40:210
1507196998167,9cyclictest1535510-21kworker/u8:1+flush-179:008:45:170
1507197998071,5cyclictest1561802-21latency_hist10:00:011
1507197998070,8cyclictest1579562-21apt-get10:55:111
1507197997973,4cyclictest1573173-21kworker/u8:3+flush-179:010:35:271
1507197997873,4cyclictest1526533-21kworker/u8:0+flush-179:008:35:201
1507197997873,4cyclictest1526533-21kworker/u8:0+flush-179:008:35:201
1507197997873,4cyclictest1486671-21kworker/u8:1+events_unbound07:30:221
1507197997771,4cyclictest1563382-21kworker/u8:0+events_unbound11:15:161
1507196997769,6cyclictest1524504-21kworker/u8:3+flush-179:008:05:160
1507197997668,3cyclictest1502604-21kworker/u8:3+events_unbound07:50:221
1507197997571,3cyclictest1526533-21kworker/u8:0+events_unbound08:20:241
1507197997570,4cyclictest1567555-21kworker/u8:1+flush-179:010:15:221
1507197997570,4cyclictest1563382-21kworker/u8:0+flush-179:010:10:151
1507196997569,4cyclictest1567555-21kworker/u8:1+flush-179:010:30:170
1507196997568,5cyclictest1590989-21apt-get11:30:000
1507196997566,6cyclictest1576132-21latency_hist10:45:020
1507196997564,8cyclictest1533106-21kworker/u8:3+flush-179:008:30:210
1507197997470,3cyclictest1599168-21kworker/u8:2+flush-179:011:55:221
1507197997470,3cyclictest1599168-21kworker/u8:2+flush-179:011:55:221
1507197997470,3cyclictest1582753-21kworker/u8:3+events_unbound11:10:261
1507197997469,4cyclictest1589107-21kworker/u8:2+flush-179:011:30:251
1507197997468,4cyclictest1486671-21kworker/u8:1+flush-179:007:25:221
1507197997368,4cyclictest1544330-21kworker/u8:3+flush-179:009:25:251
1507196997367,4cyclictest1560176-21kworker/u8:2+flush-179:010:10:260
1507196997367,4cyclictest1555391-21kworker/u8:1+flush-179:010:00:160
1507196997365,5cyclictest1563382-21kworker/u8:0+flush-179:010:25:160
1507197997266,4cyclictest1526533-21kworker/u8:0+flush-179:008:15:251
1507197997168,2cyclictest1539478-21kworker/u8:2+events_unbound08:55:211
1507196997165,4cyclictest1550641-21kworker/u8:2+events_unbound09:30:240
1507196997161,8cyclictest1563382-21kworker/u8:0+flush-179:010:05:230
1507196997161,7cyclictest1582753-21kworker/u8:3+flush-179:011:05:210
1507196997161,7cyclictest1560194-21latency_hist09:55:020
1507196997161,7cyclictest1552285-21kworker/u8:0+flush-179:009:35:160
1507197997065,4cyclictest1599168-21kworker/u8:2+flush-179:012:30:271
1507196997066,3cyclictest1526533-21kworker/u8:0+flush-179:008:40:210
1507196997063,5cyclictest1600833-21kworker/u8:3+flush-179:012:30:220
1507196997060,7cyclictest1552285-21kworker/u8:0+flush-179:009:45:170
1507197996964,4cyclictest1526533-21kworker/u8:0+events_unbound08:10:261
1507196996958,9cyclictest1591494-21apt-get11:30:090
1507197996861,5cyclictest1502604-21kworker/u8:3+events_unbound07:10:141
1507197996763,3cyclictest1544330-21kworker/u8:3+events_unbound09:15:151
1507197996763,3cyclictest1509234-21kworker/u8:0+flush-179:007:20:201
1507197996762,4cyclictest1550641-21kworker/u8:2+events_unbound09:30:141
1507196996655,8cyclictest1573194-21apt-get10:35:110
1507196996561,2cyclictest0-21swapper/012:38:590
1507196996559,5cyclictest1502604-21kworker/u8:3+flush-179:007:10:230
1507196996558,5cyclictest1600833-21kworker/u8:3+flush-179:012:15:170
1507196996558,5cyclictest1600833-21kworker/u8:3+flush-179:012:15:170
1507196996555,6cyclictest1515311-21kworker/u8:2+flush-179:007:45:230
1507197996459,4cyclictest1563382-21kworker/u8:0+events_unbound10:50:151
1507196996457,5cyclictest1560176-21kworker/u8:2+flush-179:010:00:010
1507196996451,10cyclictest1213033-21systemd-journal11:25:000
1507197996358,4cyclictest1552285-21kworker/u8:0+flush-179:009:45:291
150719799630,62cyclictest0-21swapper/111:50:591
1507201996258,2cyclictest0-21swapper/211:09:002
1507197996257,3cyclictest1535510-21kworker/u8:1+events_unbound08:45:221
1507196996251,8cyclictest1526533-21kworker/u8:0+flush-179:008:15:210
150720199610,1cyclictest0-21swapper/207:21:002
1507196996153,6cyclictest1526533-21kworker/u8:0+flush-179:008:10:210
1507197996056,3cyclictest1589107-21kworker/u8:2+flush-179:011:23:091
1507196996054,5cyclictest1502604-21kworker/u8:3+flush-179:007:50:210
1507196996053,4cyclictest1539478-21kworker/u8:2+flush-179:008:55:230
1507197995955,3cyclictest1531268-21kworker/u8:1+flush-179:008:25:311
1507197995955,3cyclictest1521749-21kworker/u8:1+flush-179:008:09:551
1507197995954,4cyclictest1573173-21kworker/u8:3+events_unbound10:40:241
1507196995954,3cyclictest1539478-21kworker/u8:2+flush-179:009:00:210
1507196995954,3cyclictest1539478-21kworker/u8:2+flush-179:009:00:210
1507196995949,8cyclictest1582753-21kworker/u8:3+events_unbound11:10:190
1507197995853,4cyclictest1526533-21kworker/u8:0+flush-179:009:09:561
1507196995853,4cyclictest1591117-21kworker/u8:3+flush-179:011:45:300
1507196995853,4cyclictest1544330-21kworker/u8:3+flush-179:009:15:260
1507196995852,4cyclictest1531268-21kworker/u8:1+flush-179:008:30:000
1507196995850,6cyclictest1568432-21apt-get10:20:120
1507196995752,4cyclictest714-21Xorg12:13:590
1507196995751,5cyclictest1213033-21systemd-journal12:30:000
1507202995652,2cyclictest0-21swapper/307:20:593
1507197995648,6cyclictest1507077-21latency_hist07:10:021
1507197995648,3cyclictest1555391-21kworker/u8:1+events_unbound10:00:121
1507196995652,3cyclictest1599168-21kworker/u8:2+flush-179:011:55:160
1507196995652,3cyclictest1599168-21kworker/u8:2+flush-179:011:55:150
1507196995549,4cyclictest1526533-21kworker/u8:0+flush-179:009:05:210
1507201995450,2cyclictest0-21swapper/212:38:592
1507196995450,3cyclictest1486671-21kworker/u8:1+flush-179:007:25:150
1507196995347,5cyclictest1563382-21kworker/u8:0+events_unbound11:35:260
1507196995347,4cyclictest1597642-21kworker/u8:0+flush-179:011:50:200
1507196995345,5cyclictest1544330-21kworker/u8:3+flush-179:009:10:180
1507196995242,7cyclictest1594467-21kworker/u8:1+flush-179:011:40:210
1507201995148,2cyclictest0-21swapper/208:55:592
1507197995146,4cyclictest1563382-21kworker/u8:0+events_unbound10:20:241
1507196995141,4cyclictest1600833-21kworker/u8:3+events_unbound12:05:200
1507201995046,2cyclictest0-21swapper/212:21:582
1507197995045,4cyclictest1582753-21kworker/u8:3+flush-179:011:07:081
1507196995045,4cyclictest1567555-21kworker/u8:1+events_unbound10:15:250
1507196995043,5cyclictest1502604-21kworker/u8:3+flush-179:007:20:010
4577091490,13ptp4l61490irq/134-eno1-TxRx-007:10:003
1507197994944,4cyclictest1539478-21kworker/u8:2+flush-179:009:00:261
1507197994944,4cyclictest1539478-21kworker/u8:2+flush-179:009:00:261
1507197994942,5cyclictest1576166-21kworker/u8:2+events_unbound11:00:211
1507196994943,5cyclictest1576166-21kworker/u8:2+flush-179:010:45:170
1507196994841,5cyclictest1555693-21apt-get09:40:100
1507202994745,1cyclictest0-21swapper/311:09:003
1507196994735,9cyclictest1213033-21systemd-journal11:05:010
1507197994642,3cyclictest1585979-21kworker/u8:1+events_unbound11:25:221
1507197994638,6cyclictest1520127-21latency_hist07:50:011
1507196994440,2cyclictest1563382-21kworker/u8:0+flush-179:010:50:160
1507201994340,2cyclictest0-21swapper/212:14:002
150720199420,40cyclictest0-21swapper/207:18:592
150720299410,40cyclictest1574538-21turbostat10:40:003
1507196994135,4cyclictest1550653-21latency_hist09:25:010
1507202994038,1cyclictest0-21swapper/307:58:593
150720299400,38cyclictest1597616-21turbostat11:50:003
1507196994036,3cyclictest1515311-21kworker/u8:2+flush-179:007:35:220
1507202993936,2cyclictest0-21swapper/312:38:593
150720299390,37cyclictest1513754-21turbostat07:30:003
1507202993833,4cyclictest1550666-21turbostat09:25:013
1507202993832,5cyclictest1540837-21turbostat08:55:003
1507201993835,2cyclictest0-21swapper/212:08:592
150720199380,36cyclictest0-21swapper/210:02:592
150720199380,35cyclictest0-21swapper/210:59:592
1507202993735,1cyclictest0-21swapper/308:21:593
1507202993734,2cyclictest0-21swapper/310:56:593
150720299370,36cyclictest0-21swapper/310:07:593
1507201993734,2cyclictest0-21swapper/207:54:552
150720199370,35cyclictest0-21swapper/211:19:582
150720199370,34cyclictest0-21swapper/208:15:002
1507202993634,1cyclictest0-21swapper/310:28:003
1507202993634,1cyclictest0-21swapper/309:09:563
1507202993634,1cyclictest0-21swapper/308:32:593
1507202993632,3cyclictest1516953-21turbostat07:40:003
150720299360,35cyclictest0-21swapper/311:31:593
150720299360,35cyclictest0-21swapper/310:18:583
150720299360,35cyclictest0-21swapper/307:14:553
1507201993634,1cyclictest0-21swapper/208:35:002
1507201993633,2cyclictest0-21swapper/210:51:592
1507202993533,1cyclictest0-21swapper/312:21:593
1507202993533,1cyclictest0-21swapper/312:04:583
1507202993532,2cyclictest0-21swapper/311:10:593
150720299350,1cyclictest0-21swapper/307:31:593
1507201993533,1cyclictest0-21swapper/211:05:002
1507201993532,2cyclictest0-21swapper/212:27:002
1507201993532,2cyclictest0-21swapper/212:04:592
1507201993532,2cyclictest0-21swapper/210:37:592
1507201993531,2cyclictest0-21swapper/209:48:592
150720199350,1cyclictest0-21swapper/207:45:002
1507202993432,1cyclictest0-21swapper/310:48:593
1507202993432,1cyclictest0-21swapper/310:20:583
1507201993432,1cyclictest0-21swapper/210:35:002
1507201993431,2cyclictest0-21swapper/211:32:582
1507201993431,2cyclictest0-21swapper/207:45:592
1507196993425,4cyclictest1521749-21kworker/u8:1+flush-179:008:00:170
1507201993331,1cyclictest0-21swapper/212:20:002
1507201993331,1cyclictest0-21swapper/212:20:002
1507201993330,2cyclictest0-21swapper/211:59:562
1507201993330,2cyclictest0-21swapper/211:59:552
1507201993330,2cyclictest0-21swapper/208:29:552
1507201993329,2cyclictest0-21swapper/209:04:552
1507201993329,2cyclictest0-21swapper/209:04:552
1507202993230,1cyclictest0-21swapper/312:30:593
1507202993230,1cyclictest0-21swapper/309:37:593
1507202993228,3cyclictest1553831-21turbostat09:35:003
1507201993230,1cyclictest0-21swapper/209:44:592
1507201993229,2cyclictest0-21swapper/208:54:552
1507201993229,2cyclictest0-21swapper/207:14:592
1507201993228,2cyclictest0-21swapper/210:14:002
150720199320,2cyclictest0-21swapper/209:33:582
150720199320,28cyclictest0-21swapper/210:45:112
1507202993129,1cyclictest0-21swapper/308:55:593
1507202993129,1cyclictest0-21swapper/307:19:003
150720299310,30cyclictest0-21swapper/308:44:593
1507201993128,2cyclictest0-21swapper/210:25:592
1507201993128,2cyclictest0-21swapper/208:00:002
4577091300,7ptp4l441ktimers/308:50:003
1507202993028,1cyclictest0-21swapper/311:19:553
1507202993028,1cyclictest0-21swapper/307:52:003
1507202993025,4cyclictest1518557-21turbostat07:45:003
1507201993028,1cyclictest0-21swapper/210:09:592
1507201993028,1cyclictest0-21swapper/208:20:012
1507201993027,2cyclictest0-21swapper/211:37:592
1507201993027,2cyclictest0-21swapper/209:59:562
1507201993027,2cyclictest0-21swapper/209:50:142
150720199300,2cyclictest0-21swapper/207:30:122
150720199300,28cyclictest0-21swapper/208:24:592
4577091290,7ptp4l441ktimers/312:10:013
4577091290,7ptp4l441ktimers/308:10:003
4577091290,6ptp4l441ktimers/309:55:013
4577091290,6ptp4l441ktimers/309:45:013
1507202992928,1cyclictest0-21swapper/312:11:593
1507202992927,1cyclictest0-21swapper/312:15:013
1507202992927,1cyclictest0-21swapper/312:15:013
1507202992926,2cyclictest0-21swapper/308:35:133
1507202992926,2cyclictest0-21swapper/308:35:133
150720299290,28cyclictest0-21swapper/311:00:033
150720299290,28cyclictest0-21swapper/309:11:583
1507201992927,1cyclictest0-21swapper/211:55:002
1507201992926,2cyclictest0-21swapper/211:20:582
1507201992926,2cyclictest0-21swapper/209:35:592
150720199290,2cyclictest0-21swapper/209:05:132
150720199290,27cyclictest0-21swapper/210:40:102
150720199290,27cyclictest0-21swapper/210:24:002
150720199290,27cyclictest0-21swapper/208:35:132
150720199290,27cyclictest0-21swapper/208:35:132
150720199290,27cyclictest0-21swapper/208:05:592
4577091280,6ptp4l441ktimers/311:25:013
4577091280,6ptp4l441ktimers/310:45:013
4577091280,6ptp4l441ktimers/310:35:013
4577091280,6ptp4l441ktimers/310:00:013
4577091280,5ptp4l441ktimers/312:00:023
4577091280,5ptp4l441ktimers/312:00:013
1507202992826,1cyclictest0-21swapper/310:02:583
1507202992825,2cyclictest0-21swapper/307:45:133
1507202992823,4cyclictest1528094-21turbostat08:15:003
150720299280,26cyclictest0-21swapper/311:40:133
1507201992825,2cyclictest0-21swapper/211:40:132
150720199280,26cyclictest0-21swapper/209:20:132
4577091270,6ptp4l61490irq/134-eno1-TxRx-010:15:013
4577091270,6ptp4l441ktimers/311:40:003
4577091270,6ptp4l441ktimers/309:05:013
4577091270,6ptp4l441ktimers/309:05:013
4577091270,5ptp4l61490irq/134-eno1-TxRx-009:30:003
4577091270,5ptp4l441ktimers/309:20:013
4577091270,5ptp4l441ktimers/308:20:013
150720299270,1cyclictest0-21swapper/312:25:033
1507201992724,2cyclictest0-21swapper/211:30:012
1507201992723,2cyclictest0-21swapper/207:39:552
4577091260,6ptp4l61490irq/134-eno1-TxRx-008:30:003
4577091260,6ptp4l441ktimers/308:05:003
4577091260,3ptp4l441ktimers/309:49:553
1507202992625,1cyclictest0-21swapper/310:51:583
1507201992623,2cyclictest0-21swapper/209:29:562
150720199260,24cyclictest0-21swapper/211:47:002
150720199260,24cyclictest0-21swapper/208:42:592
150720299250,24cyclictest0-21swapper/311:28:593
1507201992521,2cyclictest0-21swapper/209:18:582
1507201992422,1cyclictest0-21swapper/208:49:582
1507201992421,2cyclictest0-21swapper/209:15:002
1507201992421,2cyclictest0-21swapper/208:02:592
1507201992320,2cyclictest0-21swapper/211:15:012
231999200,10rtkit-daemon908065-21snmpd07:09:560
1507201991917,1cyclictest0-21swapper/212:34:582
1507202991813,4cyclictest1599204-21turbostat11:55:003
1507201991815,2cyclictest0-21swapper/207:27:592
1507201991814,2cyclictest0-21swapper/210:16:592
15072019930,1cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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