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2026-04-10 - 01:37
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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 Thu Apr 09, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
799721220,5sleep10-21swapper/108:00:191
134491640,21ptp4l9276-21grep10:20:253
134491620,4ptp4l12428-21df_inode09:20:160
134491620,3ptp4l27861-21users09:50:240
126182620,3sleep20-21swapper/208:10:182
134491610,4ptp4l0-21swapper/111:20:161
134491600,4ptp4l22131-21ntp_states08:30:221
134491590,5ptp4l0-21swapper/111:35:291
134491590,4ptp4l0-21swapper/208:45:262
134491580,21ptp4l0-21swapper/207:05:192
134491570,4ptp4l0-21swapper/308:52:233
134491560,3ptp4l0-21swapper/310:50:263
134491560,3ptp4l0-21swapper/011:45:240
134491550,4ptp4l0-21swapper/212:37:052
134491550,4ptp4l0-21swapper/112:19:201
134491550,3ptp4l0-21swapper/208:00:022
134491550,3ptp4l0-21swapper/109:45:201
134491550,3ptp4l0-21swapper/008:10:250
134491540,4ptp4l15562-21sed08:15:260
134491530,4ptp4l8401-21cut11:30:181
134491530,4ptp4l0-21swapper/111:14:301
134491530,4ptp4l0-21swapper/007:29:500
134491530,3ptp4l0-21swapper/111:55:231
134491530,3ptp4l0-21swapper/108:35:281
134491530,3ptp4l0-21swapper/107:43:411
134491520,5ptp4l0-21swapper/307:05:583
134491520,5ptp4l0-21swapper/110:51:581
134491520,4ptp4l0-21swapper/309:15:213
134491520,4ptp4l0-21swapper/211:24:052
134491520,4ptp4l0-21swapper/007:15:260
134491520,4ptp4l0-21swapper/007:15:260
134491520,3ptp4l0-21swapper/308:59:063
134491520,3ptp4l0-21swapper/112:34:271
134491520,3ptp4l0-21swapper/112:24:021
134491510,4ptp4l0-21swapper/307:37:393
134491510,4ptp4l0-21swapper/111:04:141
134491510,3ptp4l0-21swapper/107:10:481
134491500,4ptp4l0-21swapper/212:12:102
134491500,4ptp4l0-21swapper/107:36:071
134491500,4ptp4l0-21swapper/007:35:080
134491500,3ptp4l11659-21taskset10:25:291
134491500,3ptp4l0-21swapper/208:20:282
134491500,11ptp4l0-21swapper/109:30:201
134491490,9ptp4l8098-21meminfo08:00:200
134491490,4ptp4l0-21swapper/311:50:323
134491490,4ptp4l0-21swapper/307:26:023
134491490,4ptp4l0-21swapper/112:28:481
134491490,4ptp4l0-21swapper/112:28:481
134491490,4ptp4l0-21swapper/111:09:241
134491490,4ptp4l0-21swapper/110:59:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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