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2026-08-17 - 20:27
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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 Mon Aug 17, 2026 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
156603599136126,7cyclictest1662662-21latency_hist12:05:021
156603599136125,8cyclictest1641700-21latency_hist11:00:021
156603099134115,15cyclictest1574307-21latency_hist07:35:000
156603599132124,5cyclictest1559741-21kworker/u8:1+events_unbound07:50:011
156603099132121,8cyclictest1565804-21latency_hist07:10:020
156603099131112,10cyclictest1606401-21kworker/u8:2+flush-179:009:20:240
156603599128116,9cyclictest1213033-21systemd-journal10:25:001
156603599126119,5cyclictest1638303-21kworker/u8:3+events_unbound11:45:011
156603599125116,7cyclictest1659456-21kworker/u8:0+flush-179:011:55:001
156603099121104,13cyclictest1213033-21systemd-journal09:20:000
15660309911996,14cyclictest1594989-21apt-get08:35:120
156603599115106,6cyclictest1606401-21kworker/u8:2+flush-179:009:20:201
156603599114108,5cyclictest1576234-21kworker/u8:3+flush-179:008:54:591
156603599114107,5cyclictest1672467-21latency_hist12:35:011
156603599111106,4cyclictest1576234-21kworker/u8:3+events_unbound08:20:011
156603599111104,5cyclictest1638303-21kworker/u8:3+events_unbound11:55:231
156603599110103,5cyclictest1559741-21kworker/u8:1+flush-179:007:20:001
156603599110101,6cyclictest1638303-21kworker/u8:3+flush-179:011:45:211
156603099110100,7cyclictest1583048-21kworker/u8:2+events_unbound08:15:010
156603099109100,7cyclictest1583067-21latency_hist08:00:010
156603599108100,5cyclictest1559741-21kworker/u8:1+flush-179:007:40:151
15660309910898,7cyclictest1614089-21kworker/u8:1+flush-179:009:35:160
15660359910798,7cyclictest1615675-21kworker/u8:2+flush-179:010:15:191
15660359910796,8cyclictest1614089-21kworker/u8:1+flush-179:009:40:261
156603599107100,5cyclictest1576234-21kworker/u8:3+flush-179:009:00:201
156603599107100,5cyclictest1576234-21kworker/u8:3+flush-179:009:00:191
15660359910699,5cyclictest1615675-21kworker/u8:2+events_unbound09:45:191
15660359910697,7cyclictest1610905-21kworker/u8:0+flush-179:009:30:011
15660359910596,6cyclictest1583048-21kworker/u8:2+flush-179:008:00:271
15660359910497,5cyclictest1647128-21kworker/u8:1+events_unbound11:15:221
15660359910496,5cyclictest1576234-21kworker/u8:3+flush-179:008:55:191
15660359910495,6cyclictest1583048-21kworker/u8:2+flush-179:008:10:211
15660359910494,8cyclictest1213033-21systemd-journal07:55:011
15660359910398,4cyclictest1576234-21kworker/u8:3+events_unbound08:10:001
15660359910396,5cyclictest1610905-21kworker/u8:0+flush-179:009:55:181
15660309910392,8cyclictest1638303-21kworker/u8:3+flush-179:011:20:200
15660359910295,5cyclictest1614089-21kworker/u8:1+flush-179:009:35:151
15660359910295,4cyclictest1559741-21kworker/u8:1+flush-179:007:10:231
15660309910293,6cyclictest1620469-21latency_hist09:55:010
15660309910191,7cyclictest1213033-21systemd-journal12:00:000
15660359910095,3cyclictest1615675-21kworker/u8:2+flush-179:010:15:011
15660359910091,7cyclictest1622113-21kworker/u8:1+flush-179:010:55:001
15660359910080,6cyclictest1559741-21kworker/u8:1+events_unbound07:35:201
1566035999992,5cyclictest1622113-21kworker/u8:1+flush-179:011:05:241
1566035999990,6cyclictest1601336-21kworker/u8:1+events_unbound09:05:191
1566035999990,6cyclictest1601336-21kworker/u8:1+events_unbound09:05:191
1566035999981,5cyclictest1559741-21kworker/u8:1+events_unbound07:30:231
1566030999991,5cyclictest1576234-21kworker/u8:3+flush-179:008:50:170
1566030999986,10cyclictest1662710-21kworker/u8:2+flush-179:012:10:210
1566030999986,10cyclictest1662710-21kworker/u8:2+flush-179:012:10:210
1566035999691,4cyclictest1622113-21kworker/u8:1+flush-179:011:05:001
1566035999690,4cyclictest1665810-21kworker/u8:3+flush-179:012:35:161
1566035999690,4cyclictest1615675-21kworker/u8:2+events_unbound10:00:241
1566035999689,4cyclictest1662710-21kworker/u8:2+flush-179:012:10:171
1566035999689,4cyclictest1662710-21kworker/u8:2+flush-179:012:10:161
1566035999679,4cyclictest1638303-21kworker/u8:3+events_unbound11:30:241
1566030999679,9cyclictest1610905-21kworker/u8:0+events_unbound09:25:210
1566035999589,4cyclictest1594726-21kworker/u8:1+flush-179:008:35:011
1566035999584,8cyclictest1587820-21kworker/u8:0+flush-179:008:20:211
1566030999587,6cyclictest1559741-21kworker/u8:1+flush-179:007:20:170
1566030999586,6cyclictest1654669-21kworker/u8:0+flush-179:011:40:210
1566035999489,3cyclictest1665810-21kworker/u8:3+flush-179:012:15:191
1566035999488,4cyclictest1591333-21kworker/u8:2+flush-179:008:25:251
1566035999487,5cyclictest1576234-21kworker/u8:3+events_unbound08:40:011
1566030999483,9cyclictest1632137-21apt-get10:30:130
1566030999387,4cyclictest1662710-21kworker/u8:2+flush-179:012:25:000
1566030999385,6cyclictest1622113-21kworker/u8:1+flush-179:010:30:000
1566035999287,3cyclictest1576234-21kworker/u8:3+flush-179:008:40:231
1566035999286,4cyclictest1638303-21kworker/u8:3+flush-179:011:35:201
1566035999282,8cyclictest1638258-21apt-get10:50:001
1566035999185,5cyclictest1598553-21kworker/u8:0+flush-179:008:45:271
1566035999181,8cyclictest1635331-21apt-get10:40:141
1566035999083,5cyclictest1649635-21kworker/u8:0+flush-179:011:25:231
1566030999079,8cyclictest1213033-21systemd-journal07:50:150
1566035998984,4cyclictest1606401-21kworker/u8:2+flush-179:009:10:251
1566030998878,7cyclictest1622113-21kworker/u8:1+flush-179:010:35:220
1566030998878,7cyclictest1622113-21kworker/u8:1+flush-179:010:35:210
1566030998877,8cyclictest1559741-21kworker/u8:1+flush-179:007:15:220
1566030998674,6cyclictest1559741-21kworker/u8:1+events_unbound07:35:160
1566035998579,4cyclictest1610905-21kworker/u8:0+flush-179:009:30:141
1566035998478,4cyclictest1567710-21kworker/u8:0+flush-179:007:55:241
1566030998473,8cyclictest1616253-21diskstats09:40:190
1566030998470,11cyclictest1213033-21systemd-journal10:50:010
1566035998378,4cyclictest1622113-21kworker/u8:1+flush-179:010:39:561
1566035998378,4cyclictest1622113-21kworker/u8:1+flush-179:010:39:551
1566035998378,4cyclictest1608712-21kworker/u8:1+events_unbound09:15:241
1566030998377,5cyclictest1610905-21kworker/u8:0+flush-179:009:55:280
1566035998277,3cyclictest1559741-21kworker/u8:1+flush-179:007:20:211
1566035998172,7cyclictest1213033-21systemd-journal12:25:001
1566030998175,4cyclictest1615675-21kworker/u8:2+events_unbound10:00:210
1566035998074,5cyclictest1638303-21kworker/u8:3+flush-179:011:14:561
1566035998074,4cyclictest1662710-21kworker/u8:2+flush-179:012:25:251
1566035997971,5cyclictest1638303-21kworker/u8:3+events_unbound11:20:131
1566035997970,7cyclictest1567710-21kworker/u8:0+flush-179:007:25:211
1566030997973,4cyclictest1662710-21kworker/u8:2+flush-179:012:25:160
1566030997947,31cyclictest0-21swapper/010:23:590
1566030997872,4cyclictest1665810-21kworker/u8:3+flush-179:012:15:250
1566030997871,5cyclictest1559741-21kworker/u8:1+flush-179:007:40:220
1566030997868,8cyclictest1610905-21kworker/u8:0+flush-179:009:50:010
1566030997770,5cyclictest1622113-21kworker/u8:1+flush-179:010:20:020
1566030997770,5cyclictest1587820-21kworker/u8:0+flush-179:008:25:230
1566030997769,6cyclictest1591298-21latency_hist08:25:010
1566030997671,3cyclictest1641739-21kworker/u8:0+flush-179:011:10:250
1566030997669,5cyclictest1576234-21kworker/u8:3+flush-179:008:40:160
1566030997360,5cyclictest1638303-21kworker/u8:3+events_unbound11:20:020
1566035997267,4cyclictest1661107-21kworker/u8:1+flush-179:012:09:551
1566030997265,5cyclictest1615675-21kworker/u8:2+flush-179:010:10:160
1566030997265,4cyclictest1567710-21kworker/u8:0+flush-179:007:25:160
1566030997165,4cyclictest1661107-21kworker/u8:1+flush-179:012:05:260
1566030997163,6cyclictest1654707-21latency_hist11:40:010
1566035996961,6cyclictest1610905-21kworker/u8:0+events_unbound09:55:011
1566030996961,6cyclictest1604271-21kworker/u8:0+events_unbound09:10:010
1566030996961,6cyclictest1604271-21kworker/u8:0+events_unbound09:10:000
1566030996960,6cyclictest1638303-21kworker/u8:3+events_unbound10:55:130
1566030996958,7cyclictest1606398-21apt-get09:10:130
1566030996863,4cyclictest1636652-21kworker/u8:2+flush-179:010:45:220
1566030996859,6cyclictest1644878-21latency_hist11:10:000
1566030996761,4cyclictest1587820-21kworker/u8:0+flush-179:008:30:200
1566030996760,5cyclictest1614102-21latency_hist09:35:020
1566035996661,4cyclictest1615675-21kworker/u8:2+flush-179:010:09:541
1566030996659,5cyclictest1576234-21kworker/u8:3+events_unbound07:45:170
1566035996460,3cyclictest1627501-21kworker/u8:0+events_unbound10:25:231
1566030996357,4cyclictest1638303-21kworker/u8:3+flush-179:012:00:150
1566030996357,4cyclictest1638303-21kworker/u8:3+flush-179:011:50:260
1566030996357,4cyclictest1638303-21kworker/u8:3+events_unbound11:25:190
1566030996351,10cyclictest1213033-21systemd-journal10:09:590
1566030996155,4cyclictest1638303-21kworker/u8:3+flush-179:011:45:210
1566030996150,9cyclictest1213033-21systemd-journal08:05:000
1566030996053,5cyclictest1576234-21kworker/u8:3+flush-179:008:15:210
1566035995950,7cyclictest1633469-21latency_hist10:35:011
1566030995954,3cyclictest1665810-21kworker/u8:3+flush-179:012:35:200
1566030995834,6cyclictest1599513-21latency_hist08:50:010
1566030995750,5cyclictest1622113-21kworker/u8:1+flush-179:011:00:220
1566030995750,5cyclictest1559741-21kworker/u8:1+flush-179:007:10:190
1566030995650,4cyclictest714-21Xorg08:07:580
4577091500,13ptp4l441ktimers/307:10:013
1566030995044,5cyclictest1576234-21kworker/u8:3+flush-179:009:00:230
1566030995044,5cyclictest1576234-21kworker/u8:3+flush-179:009:00:230
1566045994946,2cyclictest0-21swapper/311:45:583
1566030994844,3cyclictest1576234-21kworker/u8:3+flush-179:008:55:250
1566030994740,4cyclictest1665810-21kworker/u8:3+flush-179:012:30:200
1566042994642,2cyclictest0-21swapper/211:45:582
1566030994540,4cyclictest1627501-21kworker/u8:0+flush-179:010:40:280
1566030994132,6cyclictest1653097-21latency_hist11:35:010
1566042993937,1cyclictest0-21swapper/208:40:012
1566042993834,2cyclictest0-21swapper/207:19:552
156604599370,36cyclictest0-21swapper/309:01:593
156604599370,36cyclictest0-21swapper/309:01:593
156604599370,36cyclictest0-21swapper/307:26:593
156604599370,36cyclictest0-21swapper/307:19:553
156604599370,35cyclictest0-21swapper/310:55:593
1566042993734,2cyclictest0-21swapper/212:02:592
1566042993734,2cyclictest0-21swapper/210:43:582
1566042993734,2cyclictest0-21swapper/209:27:582
1566042993734,2cyclictest0-21swapper/207:26:592
1566042993733,2cyclictest0-21swapper/212:13:592
1566042993733,2cyclictest0-21swapper/212:13:582
1566045993634,1cyclictest0-21swapper/312:34:553
1566045993633,2cyclictest0-21swapper/310:09:583
156604599360,35cyclictest0-21swapper/312:38:593
156604599360,35cyclictest0-21swapper/312:29:553
156604599360,35cyclictest0-21swapper/312:02:593
156604599360,35cyclictest0-21swapper/310:43:593
156604599360,35cyclictest0-21swapper/309:27:593
156604599360,35cyclictest0-21swapper/308:59:583
156604599360,1cyclictest0-21swapper/309:54:583
156604599360,1cyclictest0-21swapper/307:31:593
1566042993634,1cyclictest0-21swapper/209:54:592
1566042993634,1cyclictest0-21swapper/208:59:592
1566042993633,2cyclictest0-21swapper/212:38:592
1566042993633,2cyclictest0-21swapper/212:29:552
1566042993633,2cyclictest0-21swapper/210:55:592
1566042993633,2cyclictest0-21swapper/209:01:592
1566042993633,2cyclictest0-21swapper/209:01:582
156604299360,1cyclictest0-21swapper/208:07:592
1566045993532,1cyclictest0-21swapper/312:07:003
156604599350,34cyclictest0-21swapper/312:13:583
156604599350,34cyclictest0-21swapper/312:13:583
1566042993532,2cyclictest0-21swapper/211:42:592
1566042993532,2cyclictest0-21swapper/211:24:562
1566042993532,2cyclictest0-21swapper/207:20:592
156604299350,1cyclictest0-21swapper/211:28:582
1566045993432,1cyclictest0-21swapper/309:31:593
1566045993432,1cyclictest0-21swapper/307:54:553
1566045993431,2cyclictest0-21swapper/308:44:593
1566042993432,1cyclictest0-21swapper/210:05:002
1566042993431,2cyclictest0-21swapper/209:39:592
1566042993431,2cyclictest0-21swapper/208:24:592
1566042993430,2cyclictest0-21swapper/212:34:552
1566045993331,1cyclictest0-21swapper/308:46:593
1566045993330,2cyclictest0-21swapper/310:46:593
1566045993329,2cyclictest0-21swapper/309:35:593
1566042993330,2cyclictest0-21swapper/210:53:002
1566042993330,2cyclictest0-21swapper/207:44:592
1566042993329,2cyclictest0-21swapper/207:54:552
1566045993229,2cyclictest0-21swapper/311:21:593
156604599320,30cyclictest0-21swapper/311:36:003
1566042993229,2cyclictest0-21swapper/211:35:592
1566045993128,2cyclictest1661071-21turbostat12:00:003
1566045993127,2cyclictest0-21swapper/308:36:003
1566045993125,5cyclictest1622081-21turbostat10:00:013
156604599310,4cyclictest1646470-21turbostat11:15:003
1566042993128,2cyclictest0-21swapper/212:06:592
1566042993128,2cyclictest0-21swapper/209:31:592
156604299310,29cyclictest0-21swapper/210:45:132
4577091300,6ptp4l441ktimers/308:55:003
1566045993028,1cyclictest0-21swapper/311:44:583
1566045993028,1cyclictest0-21swapper/311:26:593
1566045993028,1cyclictest0-21swapper/308:28:593
1566045993028,1cyclictest0-21swapper/307:55:593
1566045993027,2cyclictest0-21swapper/309:10:593
156604599300,29cyclictest0-21swapper/310:27:583
156604599300,28cyclictest0-21swapper/309:05:023
156604599300,28cyclictest0-21swapper/309:05:013
1566042993028,1cyclictest0-21swapper/210:09:592
1566042993027,2cyclictest0-21swapper/212:16:592
1566042993027,2cyclictest0-21swapper/210:27:582
1566042993027,2cyclictest0-21swapper/209:05:022
1566042993027,2cyclictest0-21swapper/209:05:022
1566042993027,2cyclictest0-21swapper/208:46:582
156604299300,29cyclictest0-21swapper/211:00:122
156604299300,29cyclictest0-21swapper/210:22:002
156604299300,29cyclictest0-21swapper/209:40:162
4577091290,7ptp4l441ktimers/308:19:563
4577091290,6ptp4l441ktimers/307:15:003
4577091290,5ptp4l441ktimers/308:25:003
1566045992927,1cyclictest0-21swapper/309:23:583
1566045992926,2cyclictest0-21swapper/308:30:013
156604599290,2cyclictest1648074-21turbostat11:20:013
156604599290,28cyclictest0-21swapper/309:40:173
156604599290,27cyclictest0-21swapper/311:30:123
156604599290,1cyclictest0-21swapper/310:37:003
156604599290,1cyclictest0-21swapper/310:36:593
1566042992926,2cyclictest0-21swapper/211:50:132
1566042992926,2cyclictest0-21swapper/209:48:002
156604299290,28cyclictest0-21swapper/207:30:032
156604299290,27cyclictest0-21swapper/211:30:122
156604299290,27cyclictest0-21swapper/208:25:142
156604299290,26cyclictest0-21swapper/211:20:002
4577091280,6ptp4l61490irq/134-eno1-TxRx-007:50:003
4577091280,6ptp4l441ktimers/308:05:003
4577091280,6ptp4l441ktimers/307:40:003
1566045992825,2cyclictest0-21swapper/311:50:143
1566045992825,2cyclictest0-21swapper/307:20:143
1566045992824,2cyclictest1640105-21turbostat10:55:003
156604599280,27cyclictest0-21swapper/310:20:033
156604599280,26cyclictest0-21swapper/311:00:133
156604599280,26cyclictest0-21swapper/309:45:123
1566042992826,1cyclictest0-21swapper/208:44:592
1566042992825,2cyclictest0-21swapper/209:21:002
1566042992825,2cyclictest0-21swapper/208:30:012
156604299280,2cyclictest0-21swapper/207:50:012
156604299280,27cyclictest0-21swapper/208:50:132
156604299280,27cyclictest0-21swapper/207:35:022
156604299280,26cyclictest0-21swapper/207:55:592
4577091270,6ptp4l61490irq/134-eno1-TxRx-007:45:013
4577091270,5ptp4l441ktimers/312:20:013
4577091270,5ptp4l441ktimers/308:09:543
1566045992724,2cyclictest0-21swapper/308:10:593
1566042992724,2cyclictest0-21swapper/210:12:582
156604299270,25cyclictest0-21swapper/210:32:592
4577091260,6ptp4l441ktimers/311:09:593
4577091260,4ptp4l441ktimers/310:20:013
4577091260,4ptp4l441ktimers/309:19:563
1566045992623,2cyclictest0-21swapper/310:34:003
1566042992623,2cyclictest0-21swapper/211:10:142
1566042992623,2cyclictest0-21swapper/209:10:592
4577091250,5ptp4l61490irq/134-eno1-TxRx-010:15:003
1566042992523,1cyclictest0-21swapper/212:00:002
1566042992523,1cyclictest0-21swapper/208:14:592
1566042992522,2cyclictest0-21swapper/209:57:582
156604299250,2cyclictest0-21swapper/211:05:142
156604299250,23cyclictest0-21swapper/212:25:012
4577091240,4ptp4l61490irq/134-eno1-TxRx-012:24:553
1566042992320,2cyclictest0-21swapper/208:15:592
1566042992219,2cyclictest0-21swapper/207:13:592
1566042992017,2cyclictest0-21swapper/210:38:002
1566042992017,2cyclictest0-21swapper/210:38:002
1566035992016,3cyclictest1565945-21apt-key07:10:021
1566042991916,2cyclictest0-21swapper/208:00:592
1566042991815,2cyclictest0-21swapper/210:15:582
156604599152,8cyclictest67-21kworker/3:1+events10:00:093
156604299129,2cyclictest0-21swapper/209:19:002
15660429930,2cyclictest0-21swapper/207:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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