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2026-04-12 - 14:19
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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 Sun Apr 12, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491610,4ptp4l26053-21diskstats20:15:170
134491590,4ptp4l0-21swapper/122:34:061
134491580,17ptp4l0-21swapper/119:25:011
134491570,4ptp4l0-21swapper/300:21:383
134491570,4ptp4l0-21swapper/122:10:231
134491570,4ptp4l0-21swapper/120:05:591
134491570,3ptp4l0-21swapper/000:35:260
134491560,4ptp4l0-21swapper/220:46:472
134491560,16ptp4l0-21swapper/119:40:271
134491550,5ptp4l0-21swapper/021:00:260
134491550,4ptp4l0-21swapper/120:12:271
134491550,3ptp4l24039-21fschecks_time21:20:171
134491550,20ptp4l0-21swapper/119:27:501
134491540,3ptp4l0-21swapper/322:37:413
134491540,3ptp4l0-21swapper/222:30:452
134491540,3ptp4l0-21swapper/120:57:121
134491540,3ptp4l0-21swapper/023:26:280
134491540,13ptp4l0-21swapper/023:55:280
134491530,5ptp4l0-21swapper/022:15:130
134491520,4ptp4l0-21swapper/323:15:573
134491520,4ptp4l0-21swapper/223:09:232
134491520,4ptp4l0-21swapper/223:09:232
134491520,4ptp4l0-21swapper/000:24:310
134491520,12ptp4l0-21swapper/023:05:280
134491520,12ptp4l0-21swapper/023:05:270
134491520,11ptp4l26553-21ls19:05:200
316352510,6sleep3401ktimersoftd/322:45:153
134491500,9ptp4l25743-21df19:05:141
134491500,4ptp4l0-21swapper/122:18:161
134491500,3ptp4l8706-21proc_pri20:45:260
134491490,4ptp4l0-21swapper/120:30:191
134491490,4ptp4l0-21swapper/119:39:301
134491490,4ptp4l0-21swapper/022:58:470
134491480,4ptp4l0-21swapper/223:26:132
134491480,4ptp4l0-21swapper/121:07:201
134491480,4ptp4l0-21swapper/119:17:121
134491480,4ptp4l0-21swapper/023:54:060
134491480,4ptp4l0-21swapper/020:35:500
134491480,4ptp4l0-21swapper/019:15:590
134491480,3ptp4l0-21swapper/019:53:520
134491480,3ptp4l0-21swapper/019:20:580
134491480,11ptp4l0-21swapper/122:52:031
134491470,8ptp4l0-21swapper/200:07:342
134491470,3ptp4l0-21swapper/223:58:132
134491470,3ptp4l0-21swapper/221:51:122
134491470,3ptp4l0-21swapper/100:34:121
134491470,3ptp4l0-21swapper/019:13:580
134491460,7ptp4l0-21swapper/122:45:251
134491460,4ptp4l0-21swapper/121:10:101
134491460,4ptp4l0-21swapper/121:10:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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