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2025-12-09 - 06:27
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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
Characteristics of the 792 highest latencies:
System rackeslot2.osadl.org (updated Tue Dec 09, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
189048023470,2sleep30-21swapper/300:40:013
161415621010,1sleep01542473-21diskmemload21:50:090
144837221010,2sleep30-21swapper/319:50:103
16003702750,0sleep11600373-21unixbench-2d21:40:161
139398499256,3cyclictest0-21swapper/223:30:012
139398499240,5cyclictest0-21swapper/200:20:012
139398499231,6cyclictest0-21swapper/221:40:012
1393980992219,2cyclictest1635-21dbus-daemon22:50:020
1393980992219,2cyclictest1-21systemd22:20:000
1393980992214,5cyclictest1542807-21/usr/sbin/munin21:10:110
1393983992117,1cyclictest170550irq/121-eno123:45:101
1393983992113,3cyclictest0-21swapper/123:05:001
1393980992112,5cyclictest1772348-21kthreadcore23:20:110
139398499201,6cyclictest0-21swapper/220:00:012
1393983992016,1cyclictest170550irq/121-eno121:55:011
1393980992018,1cyclictest1568483-21perf21:25:010
1393980992016,2cyclictest1834300-1atop00:00:010
1393980992016,2cyclictest0-21swapper/021:50:020
1393980992014,5cyclictest1747085-21kthreadcore23:05:120
1393980992010,5cyclictest0-21swapper/022:05:100
302487291190,2phc2sys0-21swapper/300:04:003
15576282190,2sleep30-21swapper/321:16:303
1393984991917,1cyclictest0-21swapper/223:35:022
1393984991916,1cyclictest0-21swapper/200:00:012
139398499191,4cyclictest0-21swapper/221:20:012
139398399199,2cyclictest1834233-40updatedb.mlocat00:00:011
139398099199,5cyclictest0-21swapper/023:25:110
1393980991916,2cyclictest1827983-21systemctl23:55:000
1393980991916,2cyclictest1700-21systemd-logind19:25:000
1393980991912,6cyclictest1597625-21kthreadcore21:40:100
1393980991910,8cyclictest1463372-21latency_hist20:05:020
302487291180,3phc2sys0-21swapper/322:00:063
302487291180,2phc2sys0-21swapper/323:20:023
302487291180,2phc2sys0-21swapper/320:20:413
302487291180,2phc2sys0-21swapper/319:20:133
1393984991816,1cyclictest0-21swapper/223:40:022
1393984991815,1cyclictest0-21swapper/219:45:022
1393984991815,1cyclictest0-21swapper/200:21:232
1393984991814,2cyclictest0-21swapper/221:30:022
1393983991815,2cyclictest0-21swapper/122:50:011
1393983991814,3cyclictest1702-21in:imuxsock23:15:011
1393983991811,3cyclictest1700131-21cpuspeed_turbos22:40:041
1393983991811,3cyclictest1581404-21kthreadcore21:30:111
1393983991810,3cyclictest1770976-21irqrtprio23:20:091
139398099188,5cyclictest0-21swapper/023:00:010
835298170,3rtkit-daemon1400268-21munin-node22:04:000
302487291170,3phc2sys0-21swapper/323:02:153
302487291170,2phc2sys0-21swapper/321:38:113
302487291170,2phc2sys0-21swapper/321:26:533
302487291170,2phc2sys0-21swapper/300:10:563
1393984991715,1cyclictest0-21swapper/222:05:012
1393984991715,1cyclictest0-21swapper/222:00:022
1393984991715,1cyclictest0-21swapper/221:30:112
1393984991714,1cyclictest0-21swapper/223:50:162
1393984991714,1cyclictest0-21swapper/223:20:012
1393984991714,1cyclictest0-21swapper/221:05:172
1393984991714,1cyclictest0-21swapper/200:30:002
1393984991712,1cyclictest0-21swapper/222:40:342
1393983991714,2cyclictest1542531-21kworker/u16:0-xprtiod21:15:021
1393983991713,3cyclictest1652-1atopacctd21:05:061
139398399171,10cyclictest260-21systemd-journal00:15:011
139398099179,4cyclictest1848604-21cstates00:10:060
139398099179,4cyclictest1393978-21cyclictest22:43:070
139398099177,2cyclictest0-21swapper/023:40:120
1393980991715,1cyclictest0-21swapper/020:30:020
1393980991714,2cyclictest1769437-21latency_hist23:20:010
1393980991714,2cyclictest1635-21dbus-daemon20:40:020
1393980991714,2cyclictest1629903-21grep22:00:010
1393980991714,2cyclictest1586050-21/usr/sbin/munin21:35:010
1393980991714,2cyclictest0-21swapper/020:20:000
1393980991714,2cyclictest0-21swapper/000:20:010
1393980991711,5cyclictest1691277-21aten_repower_po22:35:060
139398099170,2cyclictest0-21swapper/023:03:150
139398099170,13cyclictest0-21swapper/023:36:030
302487291160,3phc2sys0-21swapper/323:32:133
302487291160,2phc2sys0-21swapper/323:22:083
302487291160,2phc2sys0-21swapper/322:15:073
139398499161,8cyclictest0-21swapper/223:00:012
1393984991614,1cyclictest0-21swapper/222:05:092
1393984991613,1cyclictest0-21swapper/222:45:072
1393984991613,1cyclictest0-21swapper/221:45:002
1393984991613,1cyclictest0-21swapper/220:30:002
1393984991613,1cyclictest0-21swapper/219:51:572
139398399168,3cyclictest1624435-21kthreadcore21:55:101
1393983991613,2cyclictest1652-1atopacctd22:35:191
1393983991613,2cyclictest1571242-21kthreadcore21:25:101
1393983991613,2cyclictest1531346-21gltestperf21:00:091
1393983991613,2cyclictest1493564-21apt-key20:30:001
1393983991613,2cyclictest1394037-21cut19:10:021
1393983991613,2cyclictest1393978-21cyclictest20:05:081
1393983991613,2cyclictest1393978-21cyclictest20:05:081
1393983991613,2cyclictest1-21systemd23:10:001
1393983991611,4cyclictest1761293-21cpuspeed_turbos23:15:061
1393983991611,4cyclictest1-21systemd22:27:171
139398099169,6cyclictest1652-1atopacctd21:15:150
139398099168,4cyclictest1813020-21/usr/sbin/munin23:45:060
139398099167,7cyclictest1529025-21tr20:55:150
139398099167,4cyclictest0-21swapper/021:40:000
139398099164,7cyclictest1721901-21kthreadcore22:50:130
1393980991613,2cyclictest1790658-21kthreadcore23:30:110
1393980991613,2cyclictest1569599-21ssh21:25:080
1393980991613,2cyclictest1506899-21fschecks_time20:40:060
1393980991613,2cyclictest1474487-21mailstats20:10:150
1393980991613,2cyclictest1451066-21sh19:55:010
1393980991613,2cyclictest1400313-21missed_timers19:15:010
1393980991612,2cyclictest1760812-21latency_hist23:15:010
302487291151,7phc2sys0-21swapper/319:05:023
302487291150,4phc2sys0-21swapper/322:09:483
302487291150,2phc2sys0-21swapper/323:06:043
302487291150,2phc2sys0-21swapper/322:50:353
302487291150,2phc2sys0-21swapper/322:22:303
1393984991513,1cyclictest0-21swapper/223:48:252
1393984991513,1cyclictest0-21swapper/223:10:012
1393984991512,1cyclictest0-21swapper/223:24:262
1393984991512,1cyclictest0-21swapper/222:35:092
1393984991512,1cyclictest0-21swapper/221:50:022
1393984991512,1cyclictest0-21swapper/219:40:002
1393984991512,1cyclictest0-21swapper/200:35:172
1393984991512,1cyclictest0-21swapper/200:15:012
139398399157,3cyclictest0-21swapper/123:35:021
139398399157,3cyclictest0-21swapper/120:20:041
139398399154,5cyclictest1607303-21kthreadcore21:45:121
139398399154,5cyclictest1394253-21aten2.4-expect19:10:061
1393983991512,2cyclictest1843961-21kthreadcore00:05:111
1393983991512,2cyclictest1821947-21kworker/u16:2-rpciod23:50:111
1393983991512,2cyclictest1803-21gdbus19:25:011
1393983991512,2cyclictest1727376-21tr22:55:111
1393983991512,2cyclictest1722888-21timerwakeupswit22:50:181
1393983991512,2cyclictest1652-1atopacctd22:15:121
1393983991512,2cyclictest1557959-21sh21:17:001
1393983991512,2cyclictest1518173-21latency_hist20:50:001
1393983991512,2cyclictest0-21swapper/122:35:011
1393983991512,2cyclictest0-21swapper/121:40:001
1393983991512,2cyclictest0-21swapper/100:20:021
1393983991511,3cyclictest1649408-21kthreadcore22:10:101
1393983991511,3cyclictest1403859-21kthreadcore19:15:121
139398099157,5cyclictest1682653-21tail22:30:060
139398099157,4cyclictest0-21swapper/019:35:100
1393980991512,2cyclictest1885310-21kthreadcore00:35:100
1393980991512,2cyclictest1678946-21switchtime22:25:160
1393980991512,2cyclictest1531945-21tr21:00:110
1393980991512,2cyclictest1496880-21kthreadcore20:30:100
139398099151,1cyclictest1869483-21apt-get00:25:040
1393980991511,3cyclictest1743101-21kworker/u16:3+nfsiod00:33:510
1393980991511,2cyclictest1469160-21dump-pmu-power20:10:000
1393980991511,2cyclictest1469160-21dump-pmu-power20:10:000
302487291140,4phc2sys0-21swapper/320:30:033
302487291140,3phc2sys0-21swapper/322:47:203
302487291140,2phc2sys0-21swapper/322:34:313
302487291140,2phc2sys0-21swapper/300:15:243
1393984991412,1cyclictest0-21swapper/221:55:012
1393984991412,1cyclictest0-21swapper/221:10:192
1393984991412,1cyclictest0-21swapper/220:40:102
1393984991412,1cyclictest0-21swapper/219:50:012
1393984991411,2cyclictest0-21swapper/222:50:132
1393984991411,1cyclictest0-21swapper/222:25:112
1393984991411,1cyclictest0-21swapper/222:15:092
1393984991411,1cyclictest0-21swapper/222:15:002
1393984991411,1cyclictest0-21swapper/221:20:062
1393984991411,1cyclictest0-21swapper/221:00:122
1393984991411,1cyclictest0-21swapper/220:50:052
1393984991411,1cyclictest0-21swapper/220:45:062
1393984991411,1cyclictest0-21swapper/220:03:562
1393984991410,2cyclictest0-21swapper/219:30:082
1393984991410,2cyclictest0-21swapper/200:05:162
139398399148,2cyclictest170550irq/121-eno122:00:111
139398399146,6cyclictest1529047-21tr20:55:151
1393983991411,2cyclictest1877822-21kthreadcore00:30:121
1393983991411,2cyclictest1798520-21sed23:35:101
1393983991411,2cyclictest1743101-21kworker/u16:3-events_unbound00:35:021
1393983991411,2cyclictest1700-21systemd-logind19:40:011
1393983991411,2cyclictest1478155-21kthreadcore20:15:101
1393983991411,2cyclictest1452547-21kthreadcore19:55:101
1393983991411,2cyclictest1434324-21kthreadcore19:40:111
1393983991411,2cyclictest1426913-21acpi19:35:021
1393983991411,2cyclictest1420511-21ls19:30:001
1393983991410,3cyclictest1872261-21kthreadcore00:25:121
1393983991410,3cyclictest1779720-21kthreadcore23:25:111
1393983991410,3cyclictest1564838-21latency21:20:131
1393983991410,3cyclictest1510228-21kthreadcore20:40:111
139398099148,1cyclictest0-21swapper/022:10:030
1393980991411,2cyclictest1837463-21kthreadcore00:00:100
1393980991411,2cyclictest1536960-21runrttasks21:05:060
1393980991411,2cyclictest1433357-21cpuspeed_turbos19:40:050
1393980991411,2cyclictest1423627-21sort19:30:110
1393980991411,2cyclictest1418858-21kthreadcore19:25:100
1393980991411,2cyclictest1402626-21aten_repower_fr19:15:060
1393980991411,2cyclictest1393978-21cyclictest20:45:120
302487291130,3phc2sys0-21swapper/323:40:033
302487291130,3phc2sys0-21swapper/320:55:073
302487291130,2phc2sys0-21swapper/319:49:563
1393984991311,1cyclictest0-21swapper/223:40:122
1393984991311,1cyclictest0-21swapper/223:10:082
1393984991311,1cyclictest0-21swapper/223:00:132
1393984991311,1cyclictest0-21swapper/222:30:052
1393984991311,1cyclictest0-21swapper/220:30:092
1393984991311,1cyclictest0-21swapper/219:25:022
1393984991311,1cyclictest0-21swapper/200:00:112
1393984991310,1cyclictest0-21swapper/222:20:102
1393984991310,1cyclictest0-21swapper/220:20:112
1393984991310,1cyclictest0-21swapper/220:10:102
1393984991310,1cyclictest0-21swapper/219:15:012
139398399139,3cyclictest1857095-21kthreadcore00:15:121
139398399139,3cyclictest1641857-21kthreadcore22:05:101
139398399139,3cyclictest0-21swapper/100:00:051
139398399138,4cyclictest0-21swapper/120:30:061
139398399136,5cyclictest260-21systemd-journal20:40:001
1393983991310,2cyclictest1808402-21kthreadcore23:40:111
1393983991310,2cyclictest1667967-21kthreadcore22:20:101
1393983991310,2cyclictest1458795-21kthreadcore20:00:111
1393983991310,2cyclictest1440449-21kthreadcore19:45:091
1393983991310,2cyclictest1393978-21cyclictest19:50:061
139398099136,6cyclictest0-21swapper/022:20:080
139398099135,1cyclictest191rcu_preempt00:21:260
1393980991310,2cyclictest1519750-21kthreadcore20:50:100
1393980991310,2cyclictest1483812-21kthreadcore20:20:100
302487291123,2phc2sys0-21swapper/321:20:043
302487291123,2phc2sys0-21swapper/320:00:133
302487291120,2phc2sys0-21swapper/321:58:033
302487291120,2phc2sys0-21swapper/321:31:063
302487291120,2phc2sys0-21swapper/320:13:043
302487291120,2phc2sys0-21swapper/320:05:183
302487291120,2phc2sys0-21swapper/320:05:183
302487291120,2phc2sys0-21swapper/300:24:353
139398499129,1cyclictest0-21swapper/220:07:252
139398499129,1cyclictest0-21swapper/220:07:252
139398499121,5cyclictest0-21swapper/220:35:032
1393984991210,1cyclictest0-21swapper/220:55:102
1393984991210,1cyclictest0-21swapper/220:15:052
1393984991210,1cyclictest0-21swapper/219:15:022
1393984991210,1cyclictest0-21swapper/200:30:112
139398499120,9cyclictest0-21swapper/219:25:022
1393983991210,1cyclictest1518579-21head20:50:041
139398099129,2cyclictest1843961-21kthreadcore00:05:110
139398099129,2cyclictest1452547-21kthreadcore19:55:100
139398099129,2cyclictest1439196-21aten_repower_po19:45:040
302487291114,2phc2sys0-21swapper/323:14:493
302487291111,3phc2sys0-21swapper/323:49:333
302487291111,3phc2sys0-21swapper/319:35:133
302487291111,2phc2sys0-21swapper/322:40:283
302487291110,3phc2sys0-21swapper/319:15:123
302487291110,3phc2sys0-21swapper/319:15:003
302487291110,3phc2sys0-21swapper/300:30:003
302487291110,2phc2sys0-21swapper/323:25:043
302487291110,2phc2sys0-21swapper/321:54:473
302487291110,2phc2sys0-21swapper/321:49:233
302487291110,2phc2sys0-21swapper/321:10:543
302487291110,2phc2sys0-21swapper/319:31:393
302487291110,2phc2sys0-21swapper/300:08:423
139398399112,2cyclictest1469504-21head20:10:041
302487291101,3phc2sys0-21swapper/323:55:013
302487291101,2phc2sys0-21swapper/320:20:013
302487291100,5phc2sys0-21swapper/320:50:013
302487291100,3phc2sys0-21swapper/322:25:253
302487291100,2phc2sys0-21swapper/323:35:503
302487291100,2phc2sys0-21swapper/322:55:233
302487291100,2phc2sys0-21swapper/322:10:173
302487291100,2phc2sys0-21swapper/321:42:003
302487291100,2phc2sys0-21swapper/321:09:183
302487291100,2phc2sys0-21swapper/320:43:243
302487291100,2phc2sys0-21swapper/300:30:563
30248729192,3phc2sys0-21swapper/320:35:113
30248729191,2phc2sys0-21swapper/319:40:183
30248729190,4phc2sys0-21swapper/320:25:053
30248729190,3phc2sys0-21swapper/321:00:083
30248729190,2phc2sys0-21swapper/323:55:063
30248729190,2phc2sys0-21swapper/322:35:193
30248729190,2phc2sys0-21swapper/320:53:263
30248729190,2phc2sys0-21swapper/319:55:043
30248729180,2phc2sys0-21swapper/319:25:033
13939849985,2cyclictest0-21swapper/219:10:012
13939809981,5cyclictest1-21systemd19:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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