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2026-05-17 - 03:52
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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 376 highest latencies:
System rackeslot2.osadl.org (updated Sun May 17, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
217801421090,2sleep30-21swapper/300:35:113
178611821030,2sleep30-21swapper/320:05:163
19319582980,2sleep30-21swapper/321:55:013
20856582300,2sleep0241rcuc/023:35:070
1709225992618,7cyclictest0-21swapper/000:40:030
1709225992516,5cyclictest2054773-21latency_hist23:15:030
2649091241,5phc2sys0-21swapper/322:35:053
170922599246,13cyclictest0-21swapper/022:05:190
1709225992416,7cyclictest1878594-21systemctl21:20:020
1709232992320,1cyclictest0-21swapper/222:00:002
1709232992319,2cyclictest0-21swapper/223:20:002
170922799230,4cyclictest2050157-21kthreadcore23:10:121
1709227992219,2cyclictest1824651-21apt-get20:40:011
1709225992213,5cyclictest1989492-21kthreadcore22:30:130
383433398210,5rtkit-daemon3851704-21mta-sts-daemon19:57:410
1709232992118,1cyclictest0-21swapper/222:50:172
1709232992117,2cyclictest0-21swapper/223:10:022
1709227992118,2cyclictest1-21systemd21:50:011
1709225992118,2cyclictest1290-21dbus-daemon23:50:020
383433398200,5rtkit-daemon3851704-21mta-sts-daemon21:03:520
2649091200,3phc2sys0-21swapper/320:10:063
1709232992018,1cyclictest0-21swapper/220:40:022
1709232992017,1cyclictest0-21swapper/223:35:012
1709232992017,1cyclictest0-21swapper/222:30:012
1709232992017,1cyclictest0-21swapper/200:20:012
1709227992017,2cyclictest1886222-21sh21:25:021
1709227992016,3cyclictest2062339-21grep23:20:021
1709227992015,2cyclictest134050irq/121-eno100:40:021
1709227992014,2cyclictest134050irq/121-eno123:45:121
170922599208,6cyclictest0-21swapper/022:45:030
1709225992016,2cyclictest0-21swapper/000:05:010
1709225992011,5cyclictest2116833-21irqcore23:55:110
1709232991917,1cyclictest0-21swapper/222:10:062
1709232991917,1cyclictest0-21swapper/219:55:012
1709232991916,1cyclictest0-21swapper/223:55:022
1709232991916,1cyclictest0-21swapper/223:30:012
1709232991916,1cyclictest0-21swapper/222:05:152
1709232991916,1cyclictest0-21swapper/220:50:072
1709232991916,1cyclictest0-21swapper/220:30:012
1709232991916,1cyclictest0-21swapper/219:10:012
1709232991916,1cyclictest0-21swapper/200:30:012
1709227991916,2cyclictest2092744-21/usr/sbin/munin23:40:011
1709227991916,2cyclictest1945351-21/usr/sbin/munin22:00:191
1709227991916,2cyclictest1901168-21idleruntime-cro21:35:001
1709227991916,2cyclictest1799695-21sh20:20:011
1709227991913,2cyclictest134050irq/121-eno121:55:121
1709227991913,2cyclictest134050irq/121-eno121:13:001
1709227991912,3cyclictest2120432-21kthreadcore23:55:141
1709227991910,3cyclictest0-21swapper/122:35:011
170922599199,5cyclictest0-21swapper/000:20:180
1709225991916,2cyclictest2038960-21apt-key23:05:010
1709225991916,2cyclictest1768257-21latency_hist19:55:000
1709225991916,2cyclictest1716500-21kthreadcore19:15:010
1709225991916,2cyclictest1-21systemd22:20:010
1709225991916,2cyclictest0-21swapper/022:15:010
1709225991911,7cyclictest0-21swapper/021:35:080
1709225991910,5cyclictest1923273-21diskmemload21:47:550
2649091180,2phc2sys0-21swapper/323:32:233
19606132180,1sleep10-21swapper/122:10:191
1709232991816,1cyclictest0-21swapper/221:55:032
1709232991815,1cyclictest0-21swapper/221:40:002
1709232991815,1cyclictest0-21swapper/221:30:002
1709232991813,2cyclictest0-21swapper/222:35:002
1709227991815,2cyclictest3840882-21snmpd21:55:031
1709227991815,2cyclictest3834328-21sendmail-mta19:15:011
1709227991815,2cyclictest3824567-21rs:main1
1709227991815,2cyclictest0-21swapper/122:25:001
1709227991815,2cyclictest0-21swapper/121:05:021
170922599188,6cyclictest0-21swapper/022:30:020
1709225991817,1cyclictest0-21swapper/023:16:450
1709225991815,2cyclictest1290-21dbus-daemon19:20:000
1709225991812,5cyclictest2094567-21kthreadcore23:40:120
1709225991810,2cyclictest1845346-21irqcore20:55:120
170922599180,3cyclictest1900918-21ssh21:34:210
170922599180,2cyclictest1878642-21/usr/sbin/munin21:20:140
2649091170,3phc2sys0-21swapper/322:01:033
2649091170,2phc2sys0-21swapper/321:56:393
2649091170,2phc2sys0-21swapper/300:10:243
1709232991715,1cyclictest0-21swapper/222:50:022
1709232991715,1cyclictest0-21swapper/200:20:132
1709232991714,1cyclictest0-21swapper/221:20:102
1709232991714,1cyclictest0-21swapper/200:10:162
1709232991714,1cyclictest0-21swapper/200:10:012
170922799179,3cyclictest0-21swapper/122:48:491
1709227991714,2cyclictest3851705-21mta-sts-daemon22:40:121
1709227991714,2cyclictest1985006-21sh22:30:001
1709227991714,2cyclictest1750554-21if_enp1s019:40:101
1709227991714,2cyclictest1426-21gdbus20:15:011
1709227991714,2cyclictest1-21systemd22:10:021
1709227991714,2cyclictest0-21swapper/121:40:001
1709227991713,3cyclictest3840882-21snmpd22:35:131
1709227991713,3cyclictest1290-21dbus-daemon23:25:021
1709227991713,3cyclictest1290-21dbus-daemon00:15:021
1709227991712,4cyclictest3851703-21mta-sts-daemon23:06:481
1709227991710,3cyclictest2169273-21tail00:30:061
170922599179,7cyclictest0-21swapper/022:35:120
170922599176,6cyclictest0-21swapper/000:27:510
1709225991714,2cyclictest3824565-21in:imuxsock19:45:000
1709225991714,2cyclictest1932047-21latency_hist21:55:020
1709225991714,2cyclictest1730614-21apt19:25:000
1709225991710,2cyclictest2176436-21turbostat00:35:000
2649091160,3phc2sys0-21swapper/321:38:023
2649091160,2phc2sys0-21swapper/323:24:253
2649091160,2phc2sys0-21swapper/321:41:553
1709232991614,1cyclictest0-21swapper/223:45:172
1709232991613,1cyclictest0-21swapper/223:00:072
1709232991613,1cyclictest0-21swapper/222:35:512
1709232991613,1cyclictest0-21swapper/222:15:132
1709232991613,1cyclictest0-21swapper/222:05:022
1709232991613,1cyclictest0-21swapper/221:40:072
1709232991613,1cyclictest0-21swapper/221:31:012
1709232991613,1cyclictest0-21swapper/220:40:092
1709232991613,1cyclictest0-21swapper/219:50:002
1709232991613,1cyclictest0-21swapper/219:30:002
1709232991613,1cyclictest0-21swapper/219:20:102
1709232991613,1cyclictest0-21swapper/219:15:022
1709232991612,2cyclictest0-21swapper/221:15:152
1709227991614,1cyclictest0-21swapper/121:10:011
1709227991613,2cyclictest3851705-21mta-sts-daemon21:41:501
1709227991613,2cyclictest3851703-21mta-sts-daemon23:01:361
1709227991613,2cyclictest3827634-1atopacctd20:25:001
1709227991613,2cyclictest2098401-21grep23:40:201
1709227991613,2cyclictest2027616-21kthreadcore22:55:141
1709227991613,2cyclictest1965819-21kthreadcore22:15:131
1709227991613,2cyclictest1719231-21cut19:15:111
1709227991613,2cyclictest1709214-21cyclictest19:35:121
1709227991613,2cyclictest1290-21dbus-daemon00:15:181
1709227991611,4cyclictest1621612-21GUsbEventThread19:47:291
1709227991610,2cyclictest134050irq/121-eno123:30:111
1709227991610,2cyclictest134050irq/121-eno100:05:251
170922599168,4cyclictest0-21swapper/023:05:030
170922599167,5cyclictest3851703-21mta-sts-daemon21:10:150
170922599166,5cyclictest0-21swapper/000:10:050
170922599163,7cyclictest1857303-21aten2.4-expect21:05:070
170922599162,4cyclictest2112353-21tr23:50:130
1709225991614,1cyclictest1709214-21cyclictest20:40:070
1709225991613,2cyclictest2001593-21gltestperf22:40:090
1709225991613,2cyclictest1975442-21mailstats22:20:170
1709225991613,2cyclictest1893552-21cron21:30:000
1709225991613,2cyclictest1818395-21cron20:35:000
1709225991613,2cyclictest1762061-21systemd-run19:50:010
170922599160,7cyclictest0-21swapper/022:00:040
2649091151,3phc2sys0-21swapper/322:20:053
2649091150,2phc2sys0-21swapper/321:29:083
2649091150,1phc2sys0-21swapper/323:51:433
2649091150,1phc2sys0-21swapper/322:09:293
2649091150,1phc2sys0-21swapper/320:15:563
170923299153,7cyclictest0-21swapper/221:50:012
1709232991513,1cyclictest0-21swapper/221:00:112
1709232991513,1cyclictest0-21swapper/220:55:142
1709232991513,1cyclictest0-21swapper/219:55:142
1709232991513,1cyclictest0-21swapper/219:15:022
1709232991512,1cyclictest0-21swapper/223:40:102
1709232991512,1cyclictest0-21swapper/223:14:222
1709232991512,1cyclictest0-21swapper/222:55:122
1709232991512,1cyclictest0-21swapper/221:10:132
1709232991512,1cyclictest0-21swapper/220:45:122
1709232991512,1cyclictest0-21swapper/220:30:132
1709232991512,1cyclictest0-21swapper/220:25:012
1709232991512,1cyclictest0-21swapper/220:10:052
1709232991512,1cyclictest0-21swapper/220:10:012
1709232991512,1cyclictest0-21swapper/220:00:122
1709232991512,1cyclictest0-21swapper/200:35:132
1709232991512,1cyclictest0-21swapper/200:30:092
1709232991512,1cyclictest0-21swapper/200:00:092
1709232991511,2cyclictest0-21swapper/222:40:092
1709227991512,2cyclictest3851705-21mta-sts-daemon22:52:091
1709227991512,2cyclictest3851703-21mta-sts-daemon19:25:141
1709227991512,2cyclictest3834332-21rtkit-daemon20:03:041
1709227991512,2cyclictest1888913-21kthreadcore21:25:141
1709227991512,2cyclictest1876323-21mailstats21:15:191
1709227991512,2cyclictest1837759-21idleruntime-cro20:50:001
1709227991512,2cyclictest1737493-21cpuspeed_turbos19:30:201
1709227991512,2cyclictest1709214-21cyclictest20:30:081
1709227991511,3cyclictest2163306-21kthreadcore00:25:141
1709227991510,4cyclictest3851704-21mta-sts-daemon19:52:581
1709227991510,3cyclictest1774497-21latency_hist20:00:011
170922599157,4cyclictest0-21swapper/022:55:120
1709225991512,2cyclictest2063207-21hddtemp_smartct23:20:090
1709225991512,2cyclictest1912042-21kthreadcore21:40:140
1709225991512,2cyclictest1837865-21latency_hist20:50:000
1709225991512,2cyclictest1709214-21cyclictest00:06:460
1709225991512,2cyclictest1290-21dbus-daemon20:10:000
1709225991512,2cyclictest0-21swapper/000:20:000
1709225991511,3cyclictest3851702-21mta-sts-daemon21:59:510
1709225991511,2cyclictest0-21swapper/020:20:020
1709225991510,1cyclictest0-21swapper/020:35:070
170922599150,10cyclictest2020732-21cut22:50:140
170922599150,10cyclictest1-21systemd23:35:000
2649091149,2phc2sys0-21swapper/319:24:373
2649091140,4phc2sys0-21swapper/323:17:393
2649091140,2phc2sys0-21swapper/321:19:273
2649091140,2phc2sys0-21swapper/300:00:193
1709232991412,1cyclictest0-21swapper/223:20:132
1709232991412,1cyclictest0-21swapper/219:40:132
1709232991412,1cyclictest0-21swapper/219:30:272
1709232991411,2cyclictest0-21swapper/221:05:092
1709232991411,1cyclictest0-21swapper/223:57:452
1709232991411,1cyclictest0-21swapper/222:25:012
1709232991411,1cyclictest0-21swapper/219:40:012
170922799142,3cyclictest0-21swapper/120:55:191
1709227991411,2cyclictest2158589-21kthreadcore00:20:131
1709227991411,2cyclictest2113404-21proc_pri23:50:161
1709227991411,2cyclictest2072915-21kthreadcore23:25:121
1709227991411,2cyclictest1725331-21gltestperf19:20:091
1709227991410,3cyclictest3851703-21mta-sts-daemon20:05:071
1709227991410,3cyclictest1827076-21kthreadcore20:40:121
1709227991410,3cyclictest1811218-21pmu-power20:25:151
170922599145,5cyclictest0-21swapper/020:24:440
1709225991411,2cyclictest2072133-21kthreadcore23:25:120
1709225991411,2cyclictest1840850-21kthreadcore20:50:110
1709225991411,2cyclictest1749389-21sendmail19:40:000
1709225991411,2cyclictest1743132-21ls19:35:000
1709225991411,2cyclictest0-21swapper/020:05:000
2649091131,2phc2sys0-21swapper/319:30:193
2649091130,2phc2sys0-21swapper/322:26:103
2649091130,2phc2sys0-21swapper/321:49:173
2649091130,2phc2sys0-21swapper/319:27:173
2649091130,2phc2sys0-21swapper/300:27:263
2649091130,1phc2sys0-21swapper/320:25:333
2649091130,1phc2sys0-21swapper/319:06:263
1709232991311,1cyclictest0-21swapper/223:35:082
1709227991310,2cyclictest1838943-21tr20:50:091
170922599132,6cyclictest0-21swapper/020:27:150
1709225991310,2cyclictest1788051-21head20:10:070
1709225991310,2cyclictest1621612-21GUsbEventThread19:25:520
2649091122,2phc2sys0-21swapper/300:05:103
2649091120,5phc2sys0-21swapper/320:55:063
2649091120,2phc2sys0-21swapper/323:41:093
2649091120,2phc2sys0-21swapper/323:27:263
2649091120,2phc2sys0-21swapper/320:43:373
2649091120,2phc2sys0-21swapper/320:23:333
2649091120,1phc2sys0-21swapper/319:56:043
20539892120,3sleep30-21swapper/323:13:433
170923299122,6cyclictest0-21swapper/220:20:012
170922599120,7cyclictest1709315-21base6419:10:000
2649091117,2phc2sys0-21swapper/323:07:323
2649091112,2phc2sys0-21swapper/320:38:283
2649091111,2phc2sys0-21swapper/320:01:493
2649091110,2phc2sys0-21swapper/323:03:093
2649091110,2phc2sys0-21swapper/320:30:063
2649091110,1phc2sys0-21swapper/320:53:463
2649091110,1phc2sys0-21swapper/300:15:283
2649091102,2phc2sys0-21swapper/322:10:103
2649091101,3phc2sys0-21swapper/321:14:553
2649091101,2phc2sys0-21swapper/323:55:043
2649091101,2phc2sys0-21swapper/323:35:123
2649091101,2phc2sys0-21swapper/322:55:203
2649091101,2phc2sys0-21swapper/322:48:113
2649091101,2phc2sys0-21swapper/320:45:053
2649091100,4phc2sys0-21swapper/300:20:043
2649091100,3phc2sys0-21swapper/322:54:563
2649091100,3phc2sys0-21swapper/321:30:053
2649091100,2phc2sys0-21swapper/322:40:053
2649091100,2phc2sys0-21swapper/322:33:113
2649091100,2phc2sys0-21swapper/322:15:153
2649091100,2phc2sys0-21swapper/321:20:083
2649091100,2phc2sys0-21swapper/321:10:013
2649091100,2phc2sys0-21swapper/321:05:013
2649091100,2phc2sys0-21swapper/319:35:083
2649091100,2phc2sys0-21swapper/319:20:003
2649091100,2phc2sys0-21swapper/300:34:123
2649091100,1phc2sys0-21swapper/319:47:383
38343339890,5rtkit-daemon3851702-21mta-sts-daemon19:08:461
264909190,2phc2sys0-21swapper/323:46:543
264909190,2phc2sys0-21swapper/319:50:113
264909190,2phc2sys0-21swapper/319:40:053
264909190,2phc2sys0-21swapper/319:10:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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