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2026-06-19 - 07:10
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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 Fri Jun 19, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16052702370,12sleep244-21ksoftirqd/219:50:172
1547989993028,1cyclictest0-21swapper/322:30:003
1547989992926,1cyclictest0-21swapper/321:45:013
19908352270,7sleep00-21swapper/000:10:350
1547989992723,1cyclictest0-21swapper/321:30:273
1547989992623,1cyclictest0-21swapper/322:00:093
1547989992522,1cyclictest0-21swapper/323:45:233
1547989992522,1cyclictest0-21swapper/321:20:133
1547989992320,1cyclictest0-21swapper/321:50:013
1547989992220,1cyclictest0-21swapper/323:05:003
1547989992219,1cyclictest0-21swapper/322:20:083
1547989992219,1cyclictest0-21swapper/321:15:013
1547989992219,1cyclictest0-21swapper/320:40:123
1547989992219,1cyclictest0-21swapper/319:15:153
1547989992111,6cyclictest1969058-21turbostat00:00:003
154798999209,9cyclictest0-21swapper/321:25:333
154798999208,1cyclictest0-21swapper/321:52:313
154798999202,14cyclictest1930230-21turbostat23:35:003
154798999201,9cyclictest1914512-21taskset23:24:403
1547989992018,1cyclictest0-21swapper/320:50:003
1547989992017,1cyclictest0-21swapper/323:25:163
1547989992017,1cyclictest0-21swapper/322:45:253
1547989992017,1cyclictest0-21swapper/321:05:143
1547989992017,1cyclictest0-21swapper/320:00:123
1547989992017,1cyclictest0-21swapper/300:10:003
154798999201,14cyclictest2016061-21chrt00:30:113
154798999201,14cyclictest1564593-21taskset19:20:153
15501602190,1sleep30-21swapper/319:10:173
154798999199,8cyclictest0-21swapper/320:50:263
154798999198,8cyclictest1906846-21turbostat23:20:003
1547989991916,1cyclictest0-21swapper/319:50:173
1547989991916,1cyclictest0-21swapper/300:40:003
1547989991916,1cyclictest0-21swapper/300:20:273
154798999191,15cyclictest1867624-21taskset22:54:203
154798999191,14cyclictest1991060-21taskset00:11:223
154798999191,13cyclictest1782115-21turbostat22:00:013
154798999190,16cyclictest0-21swapper/320:15:013
17489452180,10sleep21749090-21/usr/sbin/munin21:35:262
17097882180,8sleep11709836-21ntp_offset21:10:231
154798999189,7cyclictest0-21swapper/322:45:003
154798999188,1cyclictest0-21swapper/321:01:243
154798999188,1cyclictest0-21swapper/321:01:243
154798999187,8cyclictest1588624-21turbostat19:40:003
154798999187,1cyclictest0-21swapper/323:35:243
154798999181,9cyclictest1620917-21taskset20:05:013
1547989991816,1cyclictest0-21swapper/320:30:133
1547989991815,1cyclictest0-21swapper/322:55:193
1547989991815,1cyclictest0-21swapper/300:02:133
154798999181,14cyclictest1805790-21chrt22:15:033
154798999181,13cyclictest2008287-21chrt00:25:143
154798999181,13cyclictest1998215-21taskset00:15:273
154798999181,13cyclictest1961163-21taskset23:54:543
154798999181,13cyclictest1891549-21taskset23:10:123
154798999181,13cyclictest1804980-21taskset22:13:313
154798999181,13cyclictest1746450-21taskset21:35:183
154798999181,12cyclictest1835176-21taskset22:30:313
154798999181,12cyclictest1659438-21chrt20:35:123
154798999181,12cyclictest1652716-21taskset20:29:553
154798999181,11cyclictest1595201-21taskset19:45:013
19452792171,9sleep11945283-21ssh23:43:551
154798999178,1cyclictest0-21swapper/323:05:153
1547989991714,1cyclictest0-21swapper/320:15:163
1547989991714,1cyclictest0-21swapper/319:55:183
154798999171,12cyclictest1841861-21taskset22:35:203
154798999171,12cyclictest1841861-21taskset22:35:203
154798999171,12cyclictest1790207-21taskset22:05:093
154798999171,12cyclictest1685074-21chrt20:55:133
154798999171,12cyclictest1601354-21taskset19:49:103
154798999171,12cyclictest1575696-21taskset19:29:093
154798999170,13cyclictest1945710-21turbostat23:45:003
18580282161,11sleep01858106-21/usr/sbin/munin22:45:240
16145532161,11sleep11614293-21sendmail-msp20:00:111
15572382160,3sleep01557746-21irqrtprio19:15:160
154798999161,12cyclictest1579606-21taskset19:30:183
154798999161,11cyclictest1646046-21taskset20:21:333
154798999160,13cyclictest1712197-21chrt21:15:013
19984202150,6sleep0221rcuc/000:15:280
18281232151,10sleep21828121-21ssh22:27:342
17339182141,9sleep11733924-21ssh21:25:551
15475232140,1sleep30-21swapper/319:05:453
18837642131,9sleep00-21swapper/023:05:130
17268302130,5sleep11726836-21ssh21:22:581
16776982131,9sleep01677914-21sed20:45:290
16068992131,9sleep11606942-21collect219:50:211
15417602132,6sleep21541793-21apt-get19:05:122
20160342123,5sleep22016058-21apt-get00:30:112
20144322127,3sleep01704060-21diskmemload00:26:160
19839372120,9sleep21983943-21ssh00:08:062
18989562120,9sleep11898960-21ssh23:14:561
18820732121,8sleep11882079-21ssh23:01:011
18762152122,2sleep2171rcu_preempt23:00:142
18716312120,8sleep21873255-21/usr/sbin/munin22:55:212
18520202120,5sleep11852026-21ssh22:44:131
15903002122,7sleep01591786-21kthreadcore19:40:180
19314842110,8sleep21932448-21cut23:35:182
19140922110,8sleep21914096-21ssh23:23:232
18915082112,5sleep21891542-21apt-get23:10:122
18284932110,8sleep11828499-21ssh22:28:421
16993002110,8sleep11700488-21tr21:05:181
16549462110,8sleep11656676-21cut20:30:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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