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2025-12-07 - 08:14
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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 Sun Dec 07, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171376621110,2sleep20-21swapper/220:45:112
159550621110,1sleep01595505-21kthreadcore19:10:120
1593959993322,7cyclictest2039065-21munin-plugin-st00:00:001
1593958992716,7cyclictest1661-21polkitd21:50:000
1593958992414,6cyclictest2100747-21cstates00:35:070
302487291231,12phc2sys0-21swapper/319:20:013
1593964992220,1cyclictest0-21swapper/222:05:022
1593959992218,3cyclictest1652-1atopacctd21:30:011
1593959992214,3cyclictest1868921-21kthreadcore22:20:141
1593958992214,4cyclictest1652-1atopacctd00:25:090
302487291210,2phc2sys0-21swapper/323:08:173
1593958992118,2cyclictest1704-21rs:main0
1593958992111,6cyclictest1861414-21kthreadcore22:15:150
1593958992111,5cyclictest1935160-21kworker/u16:1-events_unbound23:04:450
17322592200,3sleep20-21swapper/221:00:102
1593964992017,1cyclictest0-21swapper/221:00:002
1593964992017,1cyclictest0-21swapper/220:00:002
1593959992017,2cyclictest1969574-21idleruntime-cro23:20:001
1593959992017,2cyclictest1658007-21apt-key20:00:001
1593959992017,2cyclictest1652-1atopacctd20:15:001
1593958992017,2cyclictest1731083-21munin-plugin-st21:00:000
159395899201,2cyclictest0-21swapper/000:22:250
1593958992012,4cyclictest1957690-21/usr/sbin/munin23:10:170
1593958992010,6cyclictest1754664-21kthreadcore21:15:130
1593964991916,1cyclictest0-21swapper/222:55:012
1593959991918,1cyclictest0-21swapper/123:48:341
1593959991916,2cyclictest1-21systemd21:20:011
1593959991912,3cyclictest2088537-21sed00:25:231
159395899194,10cyclictest0-21swapper/023:25:080
1593958991916,2cyclictest1652-1atopacctd21:10:010
1593958991916,2cyclictest1631-21gmain23:00:010
159395899190,15cyclictest0-21swapper/021:40:140
302487291180,3phc2sys0-21swapper/322:45:093
302487291180,3phc2sys0-21swapper/322:26:563
302487291180,2phc2sys0-21swapper/323:48:023
302487291180,2phc2sys0-21swapper/322:44:123
1593964991815,1cyclictest0-21swapper/223:40:102
1593964991815,1cyclictest0-21swapper/223:25:082
1593959991815,2cyclictest1629-21avahi-daemon21:35:001
1593959991815,2cyclictest1600173-21apt-key19:15:001
159395899187,6cyclictest0-21swapper/021:25:130
1593958991815,2cyclictest2074007-21latency_hist00:20:020
1593958991815,2cyclictest1676417-21cut20:15:010
1593958991815,2cyclictest1-21systemd21:55:020
1593958991812,5cyclictest2048087-21/usr/sbin/munin00:05:120
1593958991811,6cyclictest2041895-21kthreadcore00:00:130
1593958991811,4cyclictest0-21swapper/022:31:320
1593958991810,4cyclictest1766826-21runrttasks21:20:200
302487291172,2phc2sys0-21swapper/300:15:353
302487291170,2phc2sys0-21swapper/323:37:143
1593964991715,1cyclictest0-21swapper/219:25:012
1593964991714,1cyclictest0-21swapper/223:20:152
1593964991714,1cyclictest0-21swapper/200:30:202
1593964991714,1cyclictest0-21swapper/200:00:012
1593964991713,2cyclictest0-21swapper/222:00:022
159395999176,3cyclictest0-21swapper/123:40:121
159395999175,4cyclictest1987378-21aten2.4-expect23:30:051
1593959991714,2cyclictest2065600-21latency_hist00:15:021
1593959991714,2cyclictest2026506-21kthreadcore23:50:151
1593959991714,2cyclictest1-21systemd21:40:001
159395899179,7cyclictest0-21swapper/022:35:090
1593958991714,2cyclictest2021703-21dump-pmu-power23:50:000
1593958991714,2cyclictest1969750-21systemd-run23:20:010
1593958991714,2cyclictest1701071-21aten2.4-expect20:35:070
1593958991714,2cyclictest1621293-21latency_hist19:30:010
1593958991714,2cyclictest0-21swapper/019:45:130
1593958991711,5cyclictest1917361-21latency_hist22:50:010
1593958991711,1cyclictest601rcuop/322:25:150
1593958991710,6cyclictest2009764-21ptp4l-jitter23:40:160
1593958991710,6cyclictest1870613-21missed_timers22:20:160
1593958991710,4cyclictest1848761-21cstates22:10:110
302487291160,3phc2sys0-21swapper/320:55:003
302487291160,2phc2sys0-21swapper/323:51:463
302487291160,2phc2sys0-21swapper/323:30:133
302487291160,2phc2sys0-21swapper/323:24:523
302487291160,2phc2sys0-21swapper/321:21:443
302487291160,2phc2sys0-21swapper/320:35:203
302487291160,2phc2sys0-21swapper/300:03:283
18411422160,2sleep1341rcuc/122:05:141
159396499161,9cyclictest0-21swapper/221:15:062
1593964991614,1cyclictest0-21swapper/222:30:012
1593964991614,1cyclictest0-21swapper/222:05:132
1593964991614,1cyclictest0-21swapper/200:10:022
1593964991613,1cyclictest0-21swapper/223:55:002
1593964991613,1cyclictest0-21swapper/223:20:002
1593964991613,1cyclictest0-21swapper/223:10:002
1593964991613,1cyclictest0-21swapper/220:40:012
1593964991613,1cyclictest0-21swapper/220:00:112
1593964991613,1cyclictest0-21swapper/220:00:112
159395999169,2cyclictest170550irq/121-eno121:55:061
1593959991613,2cyclictest1896455-21needreboot22:35:161
1593959991613,2cyclictest1860995-21kthreadcore22:15:151
1593959991613,2cyclictest1769611-21perf21:25:011
1593959991613,2cyclictest1652-1atopacctd22:52:141
1593959991613,2cyclictest1633438-21cut19:40:011
1593959991612,3cyclictest2067494-21kthreadcore00:15:141
1593959991612,3cyclictest1935160-21kworker/u16:1+nfsiod00:07:201
1593959991612,2cyclictest0-21swapper/123:10:001
159395899169,6cyclictest1926079-21apt-get22:55:010
159395899166,5cyclictest0-21swapper/023:05:050
159395899165,5cyclictest1711321-21tr20:40:170
1593958991613,2cyclictest8351-21rtkit-daemon21:38:410
1593958991613,2cyclictest1713099-21/usr/sbin/munin20:45:160
1593958991613,2cyclictest1631-21gmain20:54:550
1593958991613,2cyclictest1-21systemd20:07:250
1593958991612,1cyclictest191rcu_preempt21:10:080
1593958991610,2cyclictest601rcuop/319:20:130
302487291157,2phc2sys0-21swapper/321:16:123
302487291150,3phc2sys0-21swapper/319:45:153
302487291150,2phc2sys0-21swapper/322:38:543
302487291150,2phc2sys0-21swapper/321:31:583
159396499156,5cyclictest0-21swapper/200:35:052
159396499151,6cyclictest0-21swapper/221:35:052
159396499151,6cyclictest0-21swapper/200:30:012
1593964991513,1cyclictest0-21swapper/222:55:532
1593964991513,1cyclictest0-21swapper/221:25:022
1593964991512,1cyclictest0-21swapper/223:30:192
1593964991512,1cyclictest0-21swapper/223:15:002
1593964991512,1cyclictest0-21swapper/223:05:012
1593964991512,1cyclictest0-21swapper/222:23:392
1593964991512,1cyclictest0-21swapper/222:10:152
1593964991512,1cyclictest0-21swapper/221:50:132
1593964991512,1cyclictest0-21swapper/221:13:062
1593964991512,1cyclictest0-21swapper/200:25:022
1593964991511,2cyclictest0-21swapper/219:30:102
159395999158,3cyclictest1800096-21kthreadcore21:40:141
159395999158,3cyclictest1652-1atopacctd23:25:101
159395999156,4cyclictest0-21swapper/100:35:121
159395999154,6cyclictest170550irq/121-eno122:00:081
159395999151,7cyclictest1737573-21munin-run21:05:011
1593959991512,2cyclictest2039494-21tail00:00:061
1593959991512,2cyclictest1972660-21kthreadcore23:20:141
1593959991512,2cyclictest1957312-21kthreadcore23:10:151
1593959991512,2cyclictest1726027-21tail20:55:111
1593959991512,2cyclictest1652-1atopacctd21:05:141
1593959991512,2cyclictest1652-1atopacctd20:35:071
1593959991512,2cyclictest1593954-21cyclictest20:52:231
1593959991511,3cyclictest1909584-21uniq22:45:091
1593959991511,3cyclictest1897231-21kworker/u16:3+nfsiod22:58:161
1593959991511,3cyclictest1865416-21kworker/u16:0+nfsiod22:29:351
1593959991511,3cyclictest1797572-21kworker/u16:3+nfsiod22:14:451
1593959991511,3cyclictest1700841-21kworker/u16:0+nfsiod21:11:021
1593959991511,1cyclictest170550irq/121-eno122:40:151
159395899158,6cyclictest0-21swapper/023:40:010
159395899157,4cyclictest0-21swapper/023:55:090
159395899155,9cyclictest1824501-21kthreadcore21:55:110
159395899154,6cyclictest0-21swapper/019:40:070
159395899152,6cyclictest1905684-21grep22:40:210
1593958991513,2cyclictest171ktimers/019:37:030
1593958991512,2cyclictest1848247-21latency_hist22:10:020
1593958991512,2cyclictest1743510-21diskmemload23:30:560
1593958991512,2cyclictest1593954-21cyclictest20:25:070
1593958991511,3cyclictest1749628-21kworker/u16:2+nfsiod21:31:470
1593958991511,1cyclictest191rcu_preempt20:30:100
159395899150,1cyclictest0-21swapper/000:30:140
159395899150,13cyclictest1657742-21perf20:00:000
302487291140,4phc2sys0-21swapper/322:02:213
302487291140,2phc2sys0-21swapper/323:56:473
302487291140,2phc2sys0-21swapper/322:22:143
302487291140,2phc2sys0-21swapper/321:57:403
302487291140,2phc2sys0-21swapper/321:35:243
302487291140,2phc2sys0-21swapper/319:37:093
302487291140,2phc2sys0-21swapper/319:25:153
20179212140,2sleep20-21swapper/223:45:142
1593964991412,1cyclictest0-21swapper/222:15:152
1593964991411,1cyclictest0-21swapper/223:35:202
1593964991411,1cyclictest0-21swapper/222:45:012
1593964991411,1cyclictest0-21swapper/221:30:152
1593964991411,1cyclictest0-21swapper/200:15:182
1593964991410,2cyclictest0-21swapper/222:35:132
159395999146,3cyclictest0-21swapper/121:55:011
1593959991411,2cyclictest2100193-21sh00:35:011
1593959991411,2cyclictest1805048-21aten_repower_vo21:45:071
1593959991411,2cyclictest1713856-21head20:45:121
1593959991411,2cyclictest1696287-21kthreadcore20:30:141
1593959991411,2cyclictest1639809-21head19:45:071
1593959991411,2cyclictest1593954-21cyclictest23:35:171
1593959991410,3cyclictest2076551-21kthreadcore00:20:141
1593959991410,3cyclictest1938188-21kthreadcore23:00:141
1593959991410,3cyclictest1830733-21kworker/u16:2+nfsiod22:33:341
1593959991410,3cyclictest1652-1atopacctd19:30:141
159395999140,4cyclictest1658305-21/usr/sbin/munin20:00:201
159395999140,4cyclictest1658305-21/usr/sbin/munin20:00:201
159395899145,4cyclictest1621433-21/usr/sbin/munin19:30:100
1593958991411,2cyclictest2022738-21fschecks_time23:50:100
1593958991411,2cyclictest1732956-21kthreadcore21:00:130
1593958991411,2cyclictest1681750-21timerandwakeup20:15:190
1593958991411,2cyclictest1659061-21tail20:00:110
1593958991411,2cyclictest1659061-21tail20:00:110
1593958991411,2cyclictest1649611-21kthreadcore19:50:140
159395899140,9cyclictest2057355-21grep00:10:130
302487291138,2phc2sys0-21swapper/323:04:293
302487291130,2phc2sys0-21swapper/322:58:043
302487291130,2phc2sys0-21swapper/321:13:423
302487291130,2phc2sys0-21swapper/320:55:193
302487291130,2phc2sys0-21swapper/300:31:223
302487291130,2phc2sys0-21swapper/300:21:523
302487291130,2phc2sys0-21swapper/300:11:303
1593964991311,1cyclictest0-21swapper/222:45:122
1593964991311,1cyclictest0-21swapper/222:30:072
1593964991311,1cyclictest0-21swapper/221:40:202
1593964991311,1cyclictest0-21swapper/220:10:022
1593964991311,1cyclictest0-21swapper/219:15:022
1593964991311,1cyclictest0-21swapper/219:10:072
1593964991311,1cyclictest0-21swapper/200:10:192
1593964991310,1cyclictest0-21swapper/220:50:112
1593964991310,1cyclictest0-21swapper/220:40:112
1593964991310,1cyclictest0-21swapper/220:20:122
1593964991310,1cyclictest0-21swapper/219:50:072
1593964991310,1cyclictest0-21swapper/200:00:122
159396499130,1cyclictest0-21swapper/219:45:072
159395999136,5cyclictest1594072-21grep19:10:021
1593959991311,1cyclictest1664876-21cstates20:05:081
1593959991310,2cyclictest1652-1atopacctd20:40:161
1593959991310,2cyclictest1650770-21processes19:50:171
1593959991310,2cyclictest1634378-21gltestperf19:40:111
1593959991310,2cyclictest1615404-21aten_repower_en19:25:071
1593959991310,2cyclictest1611284-21kthreadcore19:20:121
1593959991310,2cyclictest1603432-21fschecks_count19:15:081
1593959991310,2cyclictest1-21systemd20:22:361
159395899134,5cyclictest1821981-21kworker/0:1-events22:02:360
1593958991310,2cyclictest1684008-21kthreadcore20:20:130
1593958991310,2cyclictest1603601-21gltestperf19:15:090
15929862130,5sleep20-21swapper/219:05:182
302487291123,2phc2sys0-21swapper/323:43:293
302487291120,2phc2sys0-21swapper/319:12:293
159396499129,1cyclictest0-21swapper/220:25:122
159396499129,1cyclictest0-21swapper/219:35:192
1593964991210,1cyclictest0-21swapper/221:45:092
1593964991210,1cyclictest0-21swapper/221:20:062
1593964991210,1cyclictest0-21swapper/221:05:082
1593964991210,1cyclictest0-21swapper/220:15:012
159395999129,2cyclictest1692193-21kthreadcore20:25:131
159395999128,3cyclictest1679375-21kthreadcore20:15:141
302487291113,2phc2sys0-21swapper/300:05:133
302487291111,4phc2sys0-21swapper/322:10:093
302487291110,3phc2sys0-21swapper/321:26:223
302487291110,2phc2sys0-21swapper/320:30:153
302487291110,1phc2sys0-21swapper/322:34:573
159396499119,1cyclictest0-21swapper/220:30:082
159396499119,1cyclictest0-21swapper/220:15:062
159396499119,1cyclictest0-21swapper/219:40:132
159396499119,1cyclictest0-21swapper/219:30:012
302487291102,2phc2sys0-21swapper/319:40:143
302487291101,2phc2sys0-21swapper/322:05:093
302487291101,2phc2sys0-21swapper/320:15:123
302487291101,2phc2sys0-21swapper/320:13:483
302487291101,2phc2sys0-21swapper/300:25:213
302487291100,4phc2sys0-21swapper/319:30:073
302487291100,3phc2sys0-21swapper/322:50:143
302487291100,3phc2sys0-21swapper/321:47:463
302487291100,3phc2sys0-21swapper/321:00:093
302487291100,3phc2sys0-21swapper/300:36:113
302487291100,2phc2sys0-21swapper/323:25:083
302487291100,2phc2sys0-21swapper/323:11:103
302487291100,2phc2sys0-21swapper/322:15:033
302487291100,2phc2sys0-21swapper/321:50:223
302487291100,2phc2sys0-21swapper/321:42:533
159395899107,2cyclictest1635-21dbus-daemon19:10:010
30248729191,4phc2sys0-21swapper/321:05:073
30248729191,2phc2sys0-21swapper/323:16:063
30248729191,2phc2sys0-21swapper/320:09:553
30248729190,4phc2sys0-21swapper/319:25:013
30248729190,3phc2sys0-21swapper/320:25:053
30248729190,2phc2sys0-21swapper/320:47:383
30248729190,2phc2sys0-21swapper/320:40:083
30248729190,2phc2sys0-21swapper/320:20:053
30248729190,2phc2sys0-21swapper/320:03:213
30248729190,2phc2sys0-21swapper/320:03:213
30248729190,2phc2sys0-21swapper/319:55:083
30248729190,2phc2sys0-21swapper/319:52:003
30248729190,2phc2sys0-21swapper/319:05:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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