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2026-05-19 - 21:47
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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 100 highest latencies:
System rackeslot8.osadl.org (updated Tue May 19, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1702440993229,1cyclictest0-21swapper/311:30:003
1702440992724,1cyclictest0-21swapper/312:25:003
1702440992623,1cyclictest0-21swapper/311:40:013
19376392250,3sleep21880893-21kworker/u16:0+xprtiod10:00:162
1702440992421,1cyclictest0-21swapper/307:30:003
1702440992414,7cyclictest1858143-21sleep09:10:013
1702440992320,1cyclictest0-21swapper/311:00:003
1702440992219,1cyclictest0-21swapper/311:15:183
1702440992219,1cyclictest0-21swapper/308:15:143
1702440992219,1cyclictest0-21swapper/307:20:003
1702440992118,1cyclictest0-21swapper/310:15:283
1702440992115,3cyclictest1868431-21chrt09:15:183
170244099211,15cyclictest1762057-21turbostat07:55:003
170244099211,14cyclictest1858143-21sleep09:14:553
1702440992017,1cyclictest0-21swapper/310:40:123
1702440992017,1cyclictest0-21swapper/310:25:013
1702440992017,1cyclictest0-21swapper/309:50:173
170244099201,15cyclictest1998726-21taskset10:36:533
170244099201,14cyclictest2125914-21sleep12:00:003
19430822190,7sleep134-21ksoftirqd/110:00:301
170244099192,13cyclictest1990989-21taskset10:32:203
170244099192,13cyclictest1812865-21taskset08:30:523
1702440991917,1cyclictest0-21swapper/311:40:013
1702440991916,1cyclictest0-21swapper/312:10:273
170244099191,14cyclictest2140309-21taskset12:06:143
170244099191,14cyclictest2038666-21taskset11:03:353
170244099191,14cyclictest1905729-21chrt09:40:123
170244099191,14cyclictest1889618-21turbostat09:30:003
170244099191,14cyclictest1813532-21taskset08:35:133
170244099191,13cyclictest2126298-21chrt12:00:123
170244099191,13cyclictest1881837-21taskset09:25:003
170244099191,13cyclictest1749095-21chrt07:42:373
21286982181,7sleep12130383-21cut12:00:191
21114032186,4sleep02111887-21kthreadcore11:50:160
170244099182,13cyclictest2156986-21taskset12:18:213
170244099182,13cyclictest2023112-21taskset10:54:013
170244099182,12cyclictest1982490-21taskset10:25:303
1702440991816,1cyclictest0-21swapper/310:00:013
1702440991815,1cyclictest0-21swapper/311:50:013
1702440991815,1cyclictest0-21swapper/308:50:183
170244099181,13cyclictest2173333-21taskset12:29:553
170244099181,13cyclictest2068552-21taskset11:20:233
170244099181,13cyclictest2045763-21taskset11:06:203
170244099181,13cyclictest2013377-21taskset10:45:233
170244099181,13cyclictest1831386-21taskset08:45:193
170244099181,12cyclictest2047368-21taskset11:10:023
170244099181,12cyclictest2047368-21taskset11:10:013
170244099177,7cyclictest21736372sleep312:30:043
170244099172,12cyclictest1800165-21taskset08:22:223
170244099172,12cyclictest1780907-21taskset08:06:103
170244099172,12cyclictest1750967-21taskset07:45:183
170244099172,12cyclictest1708735-21taskset07:14:353
170244099172,11cyclictest1845541-21taskset09:00:023
1702440991714,1cyclictest0-21swapper/312:35:153
1702440991714,1cyclictest0-21swapper/311:30:133
1702440991714,1cyclictest0-21swapper/309:45:153
170244099171,13cyclictest2115524-21taskset11:50:183
170244099171,13cyclictest1947802-21taskset10:05:183
170244099171,12cyclictest1937212-21chrt10:00:123
170244099171,12cyclictest1806515-21taskset08:26:193
170244099171,12cyclictest1781668-21taskset08:10:153
170244099171,12cyclictest1768095-21chrt07:55:363
170244099171,12cyclictest1742549-21taskset07:35:483
170244099171,12cyclictest1736146-21taskset07:30:543
170244099171,12cyclictest1723567-21taskset07:23:413
170244099170,13cyclictest1823338-21taskset08:40:183
20399502161,11sleep02040374-21cut11:05:180
1702440991613,1cyclictest0-21swapper/308:55:183
170244099161,12cyclictest1903993-21taskset09:36:193
170244099161,12cyclictest1889881-21taskset09:30:053
170244099161,12cyclictest1768724-21taskset08:00:103
170244099161,11cyclictest1952941-21taskset10:10:073
20290542151,5sleep12029107-21ntp_states10:55:241
18974702151,6sleep01897704-21ssh09:35:010
16962952151,7sleep2222-21plymouthd07:05:132
21583852130,10sleep12159077-21cut12:20:161
19265352131,4sleep01926679-21ntpq09:50:200
21801832120,9sleep12180191-21ssh12:32:111
21575852120,9sleep12157683-21sed12:20:001
20403762120,9sleep12041117-21sh11:05:191
19058862121,7sleep01905985-21/usr/sbin/munin09:40:140
17427032121,1sleep00-21swapper/007:37:300
17038332121,8sleep21704871-21tr07:10:182
20831872111,7sleep02083976-21memory11:30:190
20690922111,7sleep12069096-21ssh11:20:341
20628192110,2sleep12062825-21ssh11:19:581
20448132110,8sleep22044861-21ld11:05:242
20303952112,6sleep2222-21plymouthd10:57:352
19818512111,7sleep21981899-21ntpq10:25:222
19532092110,8sleep11953427-21cat10:10:141
19392872110,7sleep01940912-21grep10:00:180
18509022111,7sleep21851013-21smartctl09:00:272
17559732110,2sleep00-21swapper/007:50:130
17454512110,1sleep2421rcuc/207:40:172
170244099119,1cyclictest0-21swapper/307:10:013
21569792100,7sleep22156985-21ssh12:18:212
21474652102,5sleep02147505-21/usr/sbin/munin12:10:250
20618222106,2sleep21702431-21cyclictest11:17:102
20388632101,6sleep10-21swapper/111:04:061
20324822105,3sleep22033224-21kthreadcore11:00:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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