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2026-09-05 - 23:28
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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 rackdslot1.osadl.org (updated Sat Sep 05, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
509021550,4sleep03030099cyclictest12:00:210
30300997028,8cyclictest9-21ksoftirqd/010:30:220
134491700,16ptp4l0-21swapper/211:10:202
30301996837,3cyclictest25-21ksoftirqd/108:10:001
134491680,20ptp4l13155-21ntp_states07:40:252
30301996719,6cyclictest25-21ksoftirqd/112:25:231
30300996735,3cyclictest9-21ksoftirqd/008:35:000
30300996733,4cyclictest9-21ksoftirqd/008:15:010
30301996634,3cyclictest25-21ksoftirqd/111:40:261
30300996630,10cyclictest9-21ksoftirqd/008:00:010
30300996630,10cyclictest9-21ksoftirqd/008:00:010
30301996531,4cyclictest25-21ksoftirqd/112:15:001
30300996534,4cyclictest9-21ksoftirqd/010:05:000
30301996434,4cyclictest25-21ksoftirqd/107:30:201
30301996424,3cyclictest25-21ksoftirqd/111:20:251
30300996426,9cyclictest9-21ksoftirqd/011:30:000
30300996426,9cyclictest9-21ksoftirqd/007:55:000
30301996333,4cyclictest25-21ksoftirqd/110:50:181
30301996333,4cyclictest25-21ksoftirqd/108:18:041
30300996331,4cyclictest9-21ksoftirqd/009:35:240
30301996231,3cyclictest25-21ksoftirqd/109:50:291
30301996230,3cyclictest25-21ksoftirqd/109:45:281
30301996229,4cyclictest25-21ksoftirqd/107:40:161
30301996228,4cyclictest25-21ksoftirqd/112:00:141
30301996225,10cyclictest25-21ksoftirqd/108:45:121
30300996230,9cyclictest9-21ksoftirqd/008:00:150
30300996230,9cyclictest9-21ksoftirqd/008:00:150
30300996229,4cyclictest9-21ksoftirqd/009:25:140
134491620,19ptp4l6750-21irqstats09:45:192
30301996133,3cyclictest25-21ksoftirqd/107:20:251
30301996131,4cyclictest25-21ksoftirqd/109:10:261
30300996132,3cyclictest9-21ksoftirqd/012:20:160
30300996131,4cyclictest9-21ksoftirqd/007:45:220
30300996130,3cyclictest9-21ksoftirqd/010:25:260
30300996130,3cyclictest9-21ksoftirqd/008:45:150
30300996128,4cyclictest9-21ksoftirqd/007:10:250
30300996124,9cyclictest9-21ksoftirqd/009:10:010
134491610,15ptp4l13654-21df_inode12:20:172
30301996031,4cyclictest25-21ksoftirqd/110:55:191
30301996031,3cyclictest25-21ksoftirqd/107:55:201
30301996031,3cyclictest25-21ksoftirqd/107:55:201
30301996030,3cyclictest25-21ksoftirqd/111:50:251
30301996029,3cyclictest25-21ksoftirqd/112:35:271
30301996028,4cyclictest25-21ksoftirqd/110:25:181
30301996027,4cyclictest25-21ksoftirqd/109:20:001
30300996031,4cyclictest9-21ksoftirqd/009:15:130
30300996030,3cyclictest9-21ksoftirqd/009:30:260
30300996029,4cyclictest9-21ksoftirqd/012:05:240
30300996029,3cyclictest9-21ksoftirqd/011:30:190
30300996027,3cyclictest9-21ksoftirqd/009:45:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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