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2026-05-12 - 01:27
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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 rackdslot3.osadl.org (updated Mon May 11, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491232168,52phc2sys0-21swapper/307:09:003
152862222194,18sleep10-21swapper/107:07:581
156472205172,22sleep20-21swapper/207:09:212
156962204171,22sleep00-21swapper/007:09:510
139391810,1ptp4l401ktimersoftd/308:30:293
139391650,1ptp4l401ktimersoftd/310:55:143
139391650,0ptp4l401ktimersoftd/309:49:503
16000994611,25cyclictest23538-21seq08:31:220
139391440,0ptp4l401ktimersoftd/308:42:373
139391430,0ptp4l401ktimersoftd/311:26:403
139391410,0ptp4l401ktimersoftd/311:14:203
139391410,0ptp4l401ktimersoftd/307:15:193
139391390,1ptp4l401ktimersoftd/307:29:403
16003993820,3cyclictest41-21ksoftirqd/310:28:583
16003993819,4cyclictest41-21ksoftirqd/309:39:313
139391380,7ptp4l401ktimersoftd/309:30:133
16003993730,5cyclictest41-21ksoftirqd/312:15:533
16001993731,4cyclictest25-21ksoftirqd/108:14:301
16001993730,5cyclictest25-21ksoftirqd/109:41:461
16000993732,3cyclictest9-21ksoftirqd/008:44:590
16000993731,4cyclictest9-21ksoftirqd/009:25:000
16000993731,4cyclictest9-21ksoftirqd/009:25:000
16000993731,4cyclictest9-21ksoftirqd/009:10:110
16000993729,6cyclictest9-21ksoftirqd/009:54:410
16003993630,4cyclictest41-21ksoftirqd/310:07:563
16002993630,4cyclictest33-21ksoftirqd/208:57:592
16002993630,4cyclictest33-21ksoftirqd/208:22:592
16002993630,4cyclictest33-21ksoftirqd/208:22:582
16001993630,4cyclictest25-21ksoftirqd/111:57:371
16001993630,4cyclictest25-21ksoftirqd/111:50:591
16001993630,4cyclictest25-21ksoftirqd/110:58:321
16001993630,4cyclictest25-21ksoftirqd/109:34:241
16001993630,4cyclictest25-21ksoftirqd/107:57:441
16001993629,4cyclictest25-21ksoftirqd/109:25:111
16003993529,4cyclictest41-21ksoftirqd/308:09:583
16002993529,4cyclictest33-21ksoftirqd/210:14:002
16002993529,4cyclictest33-21ksoftirqd/209:03:572
16002993529,4cyclictest33-21ksoftirqd/207:31:582
16002993529,4cyclictest33-21ksoftirqd/207:31:572
16001993530,3cyclictest25-21ksoftirqd/108:28:411
16001993530,3cyclictest25-21ksoftirqd/108:15:101
16001993529,4cyclictest25-21ksoftirqd/112:07:561
16001993529,4cyclictest25-21ksoftirqd/111:46:341
16001993529,4cyclictest25-21ksoftirqd/107:39:511
16000993530,3cyclictest18826-21turbostat10:40:000
16000993529,4cyclictest9-21ksoftirqd/011:57:400
16000993529,4cyclictest9-21ksoftirqd/009:59:540
139391350,10ptp4l401ktimersoftd/308:55:113
139391350,0ptp4l401ktimersoftd/310:15:243
16003993429,3cyclictest41-21ksoftirqd/311:54:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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