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2026-03-22 - 01:36
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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 100 highest latencies:
System rackdslot4.osadl.org (updated Sat Mar 21, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591198164,23phc2sys0-21swapper/307:06:153
318322193160,22sleep20-21swapper/207:06:532
318782192159,22sleep10-21swapper/107:07:291
319192174112,49sleep00-21swapper/007:08:000
278962750,2sleep30-21swapper/311:20:153
3236999671,24cyclictest15695-21ls08:45:213
3236999660,22cyclictest24438-21awk09:04:593
3236999650,26cyclictest2178-21gpgv12:40:013
3236999650,23cyclictest20379-21sed12:10:143
3236999640,25cyclictest451-21expr10:25:143
3236999630,25cyclictest21562-21mailstats10:00:253
3236999630,24cyclictest29436-21ls09:15:013
278192620,2sleep10-21swapper/108:05:171
3236999610,23cyclictest6796-21sed10:35:243
3236999610,21cyclictest0-21swapper/309:25:283
157672610,2sleep20-21swapper/207:40:192
3236999551,23cyclictest32198-21date12:35:013
3236999550,23cyclictest29746-21date12:30:003
25162550,2sleep10-21swapper/108:20:131
138491550,1ptp4l391rcuc/310:15:293
3236999531,49cyclictest223-21systemd-journal11:20:003
241112510,1sleep30-21swapper/310:05:253
3236999501,22cyclictest29849-21cstates08:10:133
3236999481,44cyclictest32454-21cpuspeed07:10:133
3236999480,24cyclictest24044-21date11:10:243
3236999480,23cyclictest30054-21cstates11:25:133
3236999470,25cyclictest20261-21cat11:05:133
3236999470,18cyclictest0-21swapper/310:40:143
3236999470,18cyclictest0-21swapper/310:40:143
3236999460,24cyclictest13494-21/usr/sbin/munin11:55:183
3236999450,16cyclictest0-21swapper/307:30:253
3236999448,17cyclictest5377-21forks11:40:143
3236999440,21cyclictest0-21swapper/312:10:013
138491440,0ptp4l401ktimersoftd/308:40:553
3236999431,38cyclictest17215-21sshd12:04:553
138491430,0ptp4l401ktimersoftd/310:32:303
138491420,0ptp4l401ktimersoftd/310:22:123
138491420,0ptp4l401ktimersoftd/308:57:303
3236999410,38cyclictest1821-21sshd11:31:083
138491410,0ptp4l401ktimersoftd/311:52:223
138491410,0ptp4l401ktimersoftd/308:19:563
3236999401,34cyclictest4836-21apt-get09:30:123
32368994036,2cyclictest33-21ksoftirqd/211:00:002
32368994035,3cyclictest33-21ksoftirqd/209:40:012
32368994028,9cyclictest33-21ksoftirqd/209:51:552
32368993935,3cyclictest33-21ksoftirqd/210:50:002
32368993934,3cyclictest33-21ksoftirqd/210:20:002
32368993934,3cyclictest33-21ksoftirqd/208:40:002
32368993835,2cyclictest33-21ksoftirqd/207:50:002
32368993833,3cyclictest33-21ksoftirqd/210:10:002
32368993833,3cyclictest33-21ksoftirqd/209:45:002
32368993833,3cyclictest33-21ksoftirqd/208:15:002
32368993833,3cyclictest33-21ksoftirqd/208:05:012
3236799380,36cyclictest0-21swapper/110:51:031
32369993730,4cyclictest41-21ksoftirqd/307:20:103
32368993733,2cyclictest33-21ksoftirqd/207:15:002
32368993732,3cyclictest33-21ksoftirqd/211:55:002
32368993732,3cyclictest33-21ksoftirqd/210:23:552
32368993732,3cyclictest33-21ksoftirqd/207:39:592
32368993731,3cyclictest33-21ksoftirqd/209:50:002
32368993727,9cyclictest33-21ksoftirqd/208:30:202
32366993723,5cyclictest9-21ksoftirqd/008:19:120
32369993630,4cyclictest41-21ksoftirqd/309:25:013
32369993614,19cyclictest24917-21expr09:05:133
32368993631,3cyclictest33-21ksoftirqd/211:45:182
32368993631,3cyclictest33-21ksoftirqd/211:20:002
32368993631,3cyclictest33-21ksoftirqd/211:13:252
32368993631,3cyclictest33-21ksoftirqd/210:50:182
32368993631,3cyclictest33-21ksoftirqd/209:35:002
32368993631,3cyclictest33-21ksoftirqd/208:05:182
32368993630,4cyclictest33-21ksoftirqd/212:28:012
32368993630,4cyclictest33-21ksoftirqd/211:34:112
32368993630,4cyclictest33-21ksoftirqd/208:28:452
32368993630,4cyclictest33-21ksoftirqd/207:58:202
32368993630,3cyclictest33-21ksoftirqd/211:30:002
32368993630,3cyclictest33-21ksoftirqd/208:55:182
32368993622,12cyclictest33-21ksoftirqd/210:26:372
32367993630,4cyclictest25-21ksoftirqd/111:39:341
32367993630,4cyclictest25-21ksoftirqd/110:26:091
32367993630,4cyclictest25-21ksoftirqd/109:31:291
32367993630,4cyclictest25-21ksoftirqd/109:24:521
32367993630,4cyclictest25-21ksoftirqd/108:12:391
32366993630,4cyclictest9-21ksoftirqd/012:01:200
32366993630,4cyclictest9-21ksoftirqd/010:02:460
32369993530,3cyclictest41-21ksoftirqd/307:40:113
32369993529,4cyclictest41-21ksoftirqd/309:58:553
32369993529,4cyclictest41-21ksoftirqd/308:07:273
32369993515,17cyclictest24853-21/usr/sbin/munin12:20:243
32369993511,21cyclictest7552-21cpu09:35:113
32368993531,3cyclictest33-21ksoftirqd/210:30:132
32368993531,2cyclictest33-21ksoftirqd/212:40:002
32368993530,3cyclictest33-21ksoftirqd/211:20:102
32368993530,3cyclictest33-21ksoftirqd/207:35:012
32368993530,3cyclictest33-21ksoftirqd/207:25:012
32368993530,3cyclictest33-21ksoftirqd/207:20:002
32368993529,4cyclictest33-21ksoftirqd/212:01:022
32368993529,4cyclictest33-21ksoftirqd/211:59:132
32368993529,4cyclictest33-21ksoftirqd/211:40:012
32368993529,4cyclictest33-21ksoftirqd/208:24:192
32368993528,4cyclictest33-21ksoftirqd/209:17:582
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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