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2026-03-16 - 08:58
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Mon Mar 16, 2026 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491770,17ptp4l2318-21gnome-shell19:05:581
108012750,5sleep20-21swapper/220:30:192
134491680,33ptp4l25-21ksoftirqd/120:45:261
56702650,5sleep35671-21df_abs21:30:133
134491620,21ptp4l24368-21df_inode22:10:151
149292610,5sleep00-21swapper/019:30:160
134491600,4ptp4l0-21swapper/220:15:162
134491600,4ptp4l0-21swapper/220:15:152
134491600,3ptp4l0-21swapper/021:44:210
134491580,4ptp4l0-21swapper/021:15:170
134491570,5ptp4l0-21swapper/119:10:171
134491570,4ptp4l0-21swapper/321:36:113
134491570,4ptp4l0-21swapper/300:39:563
134491570,3ptp4l19684-21apt-key23:10:001
134491570,3ptp4l0-21swapper/023:35:260
134491570,3ptp4l0-21swapper/023:10:250
134491560,4ptp4l0-21swapper/122:29:021
134491560,4ptp4l0-21swapper/121:44:101
134491560,4ptp4l0-21swapper/119:57:041
134491560,4ptp4l0-21swapper/021:49:300
134491560,3ptp4l0-21swapper/123:37:081
134491560,3ptp4l0-21swapper/122:22:521
134491550,4ptp4l0-21swapper/320:37:393
134491550,4ptp4l0-21swapper/123:25:361
134491550,4ptp4l0-21swapper/121:29:461
134491550,4ptp4l0-21swapper/100:24:221
134491550,3ptp4l0-21swapper/119:52:531
134491550,3ptp4l0-21swapper/119:16:581
274072540,3sleep127410-21needreboot22:15:221
134491540,4ptp4l0-21swapper/123:41:431
134491540,4ptp4l0-21swapper/122:02:181
134491540,3ptp4l0-21swapper/300:32:063
134491540,3ptp4l0-21swapper/120:33:431
134491530,4ptp4l0-21swapper/323:59:023
134491530,4ptp4l0-21swapper/122:09:441
134491530,4ptp4l0-21swapper/121:58:231
134491530,3ptp4l0-21swapper/122:30:221
134491530,3ptp4l0-21swapper/120:54:591
134491530,3ptp4l0-21swapper/120:20:131
134491530,3ptp4l0-21swapper/100:32:381
134491520,5ptp4l0-21swapper/019:05:240
134491520,4ptp4l0-21swapper/123:07:191
134491520,4ptp4l0-21swapper/120:44:101
134491520,4ptp4l0-21swapper/119:44:181
134491520,3ptp4l0-21swapper/100:25:001
134491520,21ptp4l25-21ksoftirqd/121:00:091
524799513,20cyclictest0-21swapper/000:39:200
524799510,3cyclictest134491ptp4l20:35:270
134491500,2ptp4l25453-21iostat_ios23:20:181
524999491,4cyclictest316-21taskset22:26:572
134491490,5ptp4l0-21swapper/323:25:143
134491490,3ptp4l0-21swapper/120:15:141
134491490,3ptp4l0-21swapper/120:15:141
134491480,4ptp4l0-21swapper/120:01:031
134491470,4ptp4l0-21swapper/323:46:553
134491470,4ptp4l0-21swapper/320:57:273
134491470,4ptp4l0-21swapper/119:30:471
524799462,20cyclictest0-21swapper/020:45:000
134491460,4ptp4l0-21swapper/122:56:161
134491460,3ptp4l0-21swapper/223:14:592
134491460,3ptp4l0-21swapper/121:05:231
134491460,11ptp4l30578-21sort21:15:000
134491450,9ptp4l26849-21if_enp1s022:15:160
134491450,4ptp4l0-21swapper/123:02:001
134491450,4ptp4l0-21swapper/121:31:011
134491450,11ptp4l0-21swapper/221:37:232
5249994410,26cyclictest1317-21runrttasks19:12:332
134491440,5ptp4l0-21swapper/122:43:311
134491440,5ptp4l0-21swapper/122:35:101
134491440,4ptp4l11379-21apt-get00:00:143
134491440,4ptp4l0-21swapper/123:55:021
134491440,4ptp4l0-21swapper/121:22:581
134491440,4ptp4l0-21swapper/120:36:151
134491440,4ptp4l0-21swapper/120:27:001
134491440,4ptp4l0-21swapper/100:06:501
134491440,3ptp4l0-21swapper/119:21:261
524999433,38cyclictest0-21swapper/219:55:282
134491430,4ptp4l27485-21diskstats23:25:150
134491430,4ptp4l24065-21apt-get22:10:122
134491430,4ptp4l1571-21irqstats21:20:180
134491430,4ptp4l14978-21apt-get23:00:130
134491430,4ptp4l0-21swapper/123:45:411
134491430,2ptp4l121rcu_preempt22:45:530
134491430,10ptp4l0-21swapper/200:29:482
134491420,8ptp4l0-21swapper/219:51:162
134491420,5ptp4l5813-21hddtemp_smartct21:30:160
134491420,5ptp4l28119-21apt-get20:00:023
134491420,5ptp4l12996-21/usr/sbin/munin00:00:301
134491420,5ptp4l0-21swapper/223:45:272
134491420,5ptp4l0-21swapper/021:50:270
134491420,4ptp4l7753-21apt-get20:25:130
134491420,4ptp4l5555-21apt-get22:40:110
134491420,4ptp4l4101-21ls21:25:203
134491420,4ptp4l31235-21hddtemp_smartct21:15:141
134491420,4ptp4l22559-21df23:15:140
134491420,4ptp4l21769-21apt-get22:05:110
134491420,4ptp4l18522-21apt-get00:15:130
134491420,4ptp4l17176-21memory00:10:191
134491420,4ptp4l1058-21diskstats20:10:161
134491420,4ptp4l0-21swapper/120:59:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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