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2026-03-17 - 22:40
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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 rack5slot2.osadl.org (updated Tue Mar 17, 2026 12:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
183412207191,11sleep10-21swapper/107:09:521
181922191173,13sleep00-21swapper/007:07:590
181232185167,13sleep30-21swapper/307:07:063
181072173156,12sleep20-21swapper/207:06:522
276042450,0sleep30-21swapper/310:19:143
141822120,1sleep00-21swapper/011:31:090
304652110,0sleep10-21swapper/109:49:021
22884290,0sleep30-21swapper/312:39:573
185189973,4cyclictest31570-21perf07:35:000
185189971,3cyclictest19150-21awk08:15:000
585260,0sleep10-21swapper/111:09:171
185199961,3cyclictest0-21swapper/110:10:111
185189960,3cyclictest6495-21basename12:00:000
4634250,0sleep20-21swapper/211:58:542
21583250,0sleep30-21swapper/309:13:163
185289955,0cyclictest0-21swapper/309:45:053
185289953,1cyclictest29041-21ssh11:55:033
185289950,5cyclictest23651-21sh11:04:473
185289950,5cyclictest0-21swapper/312:30:143
185289950,5cyclictest0-21swapper/310:45:283
185289950,5cyclictest0-21swapper/309:05:133
185289950,4cyclictest29465-21sed12:10:213
185239952,3cyclictest814-21snmpd09:53:342
185239950,5cyclictest0-21swapper/210:15:432
185239950,5cyclictest0-21swapper/209:24:222
185239950,0cyclictest0-21swapper/210:45:332
185199954,1cyclictest0-21swapper/112:18:251
185199951,3cyclictest0-21swapper/110:40:111
185199951,3cyclictest0-21swapper/107:20:111
185199951,2cyclictest0-21swapper/110:55:131
185199951,2cyclictest0-21swapper/110:20:091
185199951,2cyclictest0-21swapper/109:15:121
185199951,2cyclictest0-21swapper/109:05:121
185199951,2cyclictest0-21swapper/107:35:111
185189950,5cyclictest0-21swapper/012:34:050
185189950,5cyclictest0-21swapper/011:43:010
185189950,5cyclictest0-21swapper/010:55:520
185189950,5cyclictest0-21swapper/009:48:120
185189950,5cyclictest0-21swapper/008:00:240
185189950,4cyclictest0-21swapper/008:25:130
185289944,0cyclictest21077-21kworker/3:108:56:283
185289944,0cyclictest0-21swapper/311:26:303
185289943,1cyclictest2006-21/usr/sbin/munin08:45:183
185289942,1cyclictest30260-21if_eth107:30:163
185289942,1cyclictest23816-21if_eth111:20:163
185289942,1cyclictest12483-21ssh11:15:103
185289941,3cyclictest814-21snmpd10:51:293
185289941,3cyclictest3683-21timerwakeupswit09:35:203
185289941,3cyclictest19483-21sh11:50:123
185289940,4cyclictest17087-21apt-get12:05:013
185289940,4cyclictest0-21swapper/311:10:103
185289940,4cyclictest0-21swapper/310:55:143
185289940,4cyclictest0-21swapper/310:40:273
185289940,4cyclictest0-21swapper/310:35:103
185289940,4cyclictest0-21swapper/310:30:113
185289940,4cyclictest0-21swapper/310:25:313
185289940,4cyclictest0-21swapper/310:21:103
185289940,4cyclictest0-21swapper/310:04:313
185289940,4cyclictest0-21swapper/309:50:513
185289940,4cyclictest0-21swapper/309:33:233
185289940,4cyclictest0-21swapper/309:25:133
185289940,4cyclictest0-21swapper/309:17:153
185289940,3cyclictest8566-21cat11:45:003
185289940,3cyclictest8562-21sort10:10:003
185289940,3cyclictest32386-21ssh12:28:183
185289940,3cyclictest31959-21/usr/sbin/munin08:40:203
185289940,3cyclictest24581-21sh11:05:113
185289940,3cyclictest24335-21ssh11:36:083
185289940,3cyclictest19859-21ssh09:43:483
185289940,3cyclictest1601-21latency_hist07:40:003
185289940,3cyclictest15880-21cat12:20:103
185289940,3cyclictest14717-21ssh11:31:293
185289940,3cyclictest12214-21ls08:00:123
185289940,3cyclictest11927-21ssh09:55:193
185289940,3cyclictest0-21swapper/309:20:023
185289940,3cyclictest0-21swapper/307:20:003
185289940,1cyclictest9432-21/usr/sbin/munin09:00:203
185289940,1cyclictest8531-21ps12:00:173
185289940,1cyclictest26842-21/usr/sbin/munin07:25:203
185289940,1cyclictest16886-21/usr/sbin/munin08:10:133
185289940,0cyclictest0-21swapper/312:16:433
185239944,0cyclictest0-21swapper/212:21:532
185239943,1cyclictest25393-21grep11:05:142
185239943,1cyclictest2472-21munin-run09:20:012
185239941,2cyclictest0-21swapper/207:15:122
185239940,4cyclictest24597-21tr07:20:132
185239940,4cyclictest20756-21ssh10:00:112
185239940,4cyclictest1857-21ssh10:37:552
185239940,4cyclictest15220-21diskstats09:10:142
185239940,4cyclictest0-21swapper/212:25:132
185239940,4cyclictest0-21swapper/212:15:102
185239940,4cyclictest0-21swapper/212:05:122
185239940,4cyclictest0-21swapper/212:00:112
185239940,4cyclictest0-21swapper/211:52:222
185239940,4cyclictest0-21swapper/211:25:132
185239940,4cyclictest0-21swapper/211:21:202
185239940,4cyclictest0-21swapper/211:15:122
185239940,4cyclictest0-21swapper/210:54:082
185239940,4cyclictest0-21swapper/210:30:122
185239940,4cyclictest0-21swapper/210:20:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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