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2026-07-29 - 10:13
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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 Wed Jul 29, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8153412490,1sleep0171rcu_preempt19:15:160
8266662470,7sleep014-21ksoftirqd/019:20:220
8266662470,7sleep014-21ksoftirqd/019:20:210
806339993632,1cyclictest0-21swapper/300:15:003
12419652280,7sleep20-21swapper/200:05:222
806339992725,1cyclictest0-21swapper/300:40:003
806339992724,1cyclictest0-21swapper/322:45:003
806339992724,1cyclictest0-21swapper/322:20:233
806339992522,1cyclictest0-21swapper/320:05:263
806339992421,1cyclictest0-21swapper/323:55:253
806339992421,1cyclictest0-21swapper/323:20:133
806339992421,1cyclictest0-21swapper/323:00:253
806339992421,1cyclictest0-21swapper/300:20:293
806339992320,1cyclictest0-21swapper/321:20:303
806339992320,1cyclictest0-21swapper/319:20:273
806339992320,1cyclictest0-21swapper/319:20:273
806339992320,1cyclictest0-21swapper/300:00:183
806339992312,8cyclictest12035452sleep323:40:213
806339992219,1cyclictest0-21swapper/321:40:233
806339992219,1cyclictest0-21swapper/320:40:193
806339992219,1cyclictest0-21swapper/320:20:063
806339992219,1cyclictest0-21swapper/319:40:013
806339992219,1cyclictest0-21swapper/300:30:133
80633999221,15cyclictest1221728-21taskset23:55:013
806339992118,1cyclictest0-21swapper/320:50:303
11487252211,10sleep21148815-21/usr/sbin/munin23:05:292
806339992017,1cyclictest0-21swapper/322:25:153
806339992017,1cyclictest0-21swapper/321:00:183
806339992017,1cyclictest0-21swapper/319:10:193
806339992016,1cyclictest0-21swapper/300:29:593
80633999201,14cyclictest1023139-21taskset21:45:273
806339992010,7cyclictest9432782sleep320:55:163
80633999199,7cyclictest8342862sleep319:30:133
80633999192,13cyclictest865195-21chrt19:50:233
80633999192,13cyclictest1127165-21taskset22:54:473
806339991916,1cyclictest0-21swapper/322:31:503
806339991916,1cyclictest0-21swapper/319:40:173
80633999191,14cyclictest830255-21taskset19:25:193
80633999191,14cyclictest1071958-21taskset22:19:013
80633999191,14cyclictest1041373-21chrt22:00:143
80633999191,13cyclictest956035-21taskset21:05:013
80633999189,6cyclictest9235692sleep320:38:193
80633999187,7cyclictest11291412sleep322:55:203
806339991815,1cyclictest0-21swapper/323:45:173
806339991815,1cyclictest0-21swapper/321:35:163
806339991815,1cyclictest0-21swapper/319:15:193
80633999181,13cyclictest968733-21taskset21:11:233
80633999181,13cyclictest935187-21taskset20:45:203
80633999181,13cyclictest892414-21taskset20:15:183
80633999181,13cyclictest885566-21taskset20:10:133
80633999181,13cyclictest872663-21taskset20:00:023
80633999181,13cyclictest1196541-21chrt23:36:203
80633999181,13cyclictest1181052-21taskset23:26:503
80633999181,13cyclictest1157299-21taskset23:11:353
80633999181,13cyclictest1062291-21taskset22:10:243
80633999181,13cyclictest1055465-21taskset22:06:513
80633999181,13cyclictest1039683-21taskset21:56:413
80633999181,13cyclictest1001082-21taskset21:34:113
8328892178,2sleep1171rcu_preempt19:25:221
80633999179,5cyclictest9165292chrt20:30:253
80633999178,6cyclictest8595952sleep319:49:293
806339991714,1cyclictest0-21swapper/322:35:183
806339991714,1cyclictest0-21swapper/321:50:103
806339991714,1cyclictest0-21swapper/300:15:293
80633999171,13cyclictest992845-21taskset21:27:543
80633999171,13cyclictest970392-21taskset21:15:153
80633999171,13cyclictest1149685-21taskset23:07:013
80633999171,13cyclictest1115249-21taskset22:45:203
80633999171,12cyclictest910649-21taskset20:26:433
80633999171,11cyclictest1237808-21chrt00:05:153
80633999161,12cyclictest866308-21taskset19:55:053
80633999161,12cyclictest1165336-21taskset23:17:083
80633999161,11cyclictest1188584-21taskset23:30:543
9624822151,10sleep2962484-21ssh21:10:092
8744392150,7sleep1875862-21tr20:00:171
11982622150,9sleep11197946-21sendmail-msp23:40:121
8053302141,9sleep2805353-21ntp_states19:05:222
11995912141,9sleep21200274-21cut23:40:172
10469102140,1sleep20-21swapper/222:00:292
8464752131,4sleep0222-21plymouthd19:35:470
12912572131,9sleep11291259-21ssh00:36:531
9548112121,8sleep0949394-21sendmail-msp21:00:210
9280272120,2sleep0923998-21/usr/sbin/munin20:40:210
8601032120,3sleep2860248-21tail19:50:162
8479902121,8sleep2848675-21cut19:40:172
8164342120,9sleep2816506-21cut19:15:202
12772172121,8sleep01277326-21fschecks_time00:30:150
12757522120,2sleep10-21swapper/100:27:231
12536152121,8sleep11253666-21grep00:15:151
11893052120,9sleep01189312-21sshd-session23:33:010
10091872121,8sleep21009357-21latency_hist21:40:012
9931722110,8sleep2993176-21ssh21:28:552
9771342110,1sleep10-21swapper/121:18:071
9333392110,8sleep2935186-21tr20:45:212
9134862110,8sleep0915279-21cut20:30:190
8282592110,8sleep0828378-21/usr/sbin/munin19:25:170
8080092113,5sleep1809735-21tr19:10:221
8061902110,2sleep30-21swapper/319:09:563
12712082111,7sleep21272909-21kthreadcore00:25:192
11895062112,7sleep21189512-21ssh23:33:312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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