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2026-08-19 - 00:40
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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
Characteristics of the 50 highest latencies:
System rackdslot4.osadl.org (updated Tue Aug 18, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591205174,20phc2sys0-21swapper/307:06:033
170202203171,21sleep20-21swapper/207:05:512
170232202167,23sleep00-21swapper/007:05:540
170192200167,22sleep10-21swapper/107:05:511
586821330,2sleep31764099cyclictest10:00:193
1734628261,11sleep10-21swapper/107:10:011
113362690,2sleep30-21swapper/310:10:273
1385916045,8phc2sys0-21swapper/307:10:013
138491580,1ptp4l401ktimersoftd/309:39:523
55572550,1sleep20-21swapper/212:10:162
17638995320,4cyclictest25-21ksoftirqd/109:35:001
17638995121,4cyclictest25-21ksoftirqd/110:30:231
17638995121,4cyclictest25-21ksoftirqd/110:30:231
17638995121,3cyclictest25-21ksoftirqd/109:20:181
82222500,4sleep11763899cyclictest07:55:161
17638994814,8cyclictest25-21ksoftirqd/111:40:001
17638994720,8cyclictest25-21ksoftirqd/108:20:221
17638994716,4cyclictest25-21ksoftirqd/107:50:191
147742470,2sleep314777-21cpuspeed10:20:133
17638994618,4cyclictest25-21ksoftirqd/111:20:161
17638994615,4cyclictest25-21ksoftirqd/108:35:191
17638994614,6cyclictest25-21ksoftirqd/111:25:191
17638994611,10cyclictest25-21ksoftirqd/108:50:001
17638994520,6cyclictest25-21ksoftirqd/109:55:221
17638994512,7cyclictest25-21ksoftirqd/108:40:141
1763899447,6cyclictest25-21ksoftirqd/112:35:191
1763899444,8cyclictest25-21ksoftirqd/110:55:201
17638994434,3cyclictest25-21ksoftirqd/107:25:001
17638994417,7cyclictest25-21ksoftirqd/111:55:231
17638994417,7cyclictest25-21ksoftirqd/110:50:241
17638994416,3cyclictest25-21ksoftirqd/109:25:131
17638994411,8cyclictest25-21ksoftirqd/112:30:181
1763899439,7cyclictest25-21ksoftirqd/112:00:161
1763899433,8cyclictest25-21ksoftirqd/112:10:151
1763899433,8cyclictest25-21ksoftirqd/109:10:131
17638994316,7cyclictest25-21ksoftirqd/110:40:161
17638994311,4cyclictest25-21ksoftirqd/112:05:141
17638994310,4cyclictest25-21ksoftirqd/112:15:231
17638994230,10cyclictest25-21ksoftirqd/107:15:201
1763899421,9cyclictest25-21ksoftirqd/109:45:281
17638994217,6cyclictest25-21ksoftirqd/112:25:251
1763899421,5cyclictest25-21ksoftirqd/111:30:241
17638994214,4cyclictest25-21ksoftirqd/110:13:481
17638994213,4cyclictest25-21ksoftirqd/109:19:451
17638994213,4cyclictest25-21ksoftirqd/109:05:141
138491420,0ptp4l401ktimersoftd/308:59:023
138491420,0ptp4l401ktimersoftd/307:25:323
17639994136,3cyclictest7005-21idleruntime-cro11:10:002
1763899417,7cyclictest25-21ksoftirqd/109:35:201
1763899417,4cyclictest25-21ksoftirqd/111:50:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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