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2026-04-22 - 13:08
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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 Wed Apr 22, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491900,3ptp4l1317-21runrttasks21:18:310
134491900,3ptp4l1317-21runrttasks21:18:310
134491660,5ptp4l0-21swapper/021:35:220
134491660,3ptp4l29972-21apt-get20:10:112
134491650,4ptp4l10325-21ntp_states19:25:210
134491620,5ptp4l3701-21timerandwakeup20:20:260
134491610,4ptp4l0-21swapper/019:45:150
134491610,3ptp4l28435-21df_inode23:35:152
215099601,56cyclictest0-21swapper/319:43:493
134491590,24ptp4l25-21ksoftirqd/123:26:091
134491580,4ptp4l0-21swapper/123:19:181
134491580,4ptp4l0-21swapper/022:06:130
134491570,3ptp4l0-21swapper/122:34:031
134491570,3ptp4l0-21swapper/122:05:191
134491570,3ptp4l0-21swapper/119:31:331
134491560,4ptp4l0-21swapper/119:57:051
134491560,3ptp4l0-21swapper/221:45:232
134491560,3ptp4l0-21swapper/119:25:201
134491560,3ptp4l0-21swapper/119:15:231
134491560,1ptp4l401ktimersoftd/322:10:003
134491550,4ptp4l0-21swapper/123:05:131
134491550,4ptp4l0-21swapper/021:07:540
134491550,3ptp4l0-21swapper/300:31:593
134491550,3ptp4l0-21swapper/220:45:162
146122540,5sleep20-21swapper/219:35:182
134491540,4ptp4l0-21swapper/220:50:442
134491540,4ptp4l0-21swapper/022:19:570
134491530,4ptp4l0-21swapper/221:00:492
134491530,4ptp4l0-21swapper/121:28:421
134491530,4ptp4l0-21swapper/120:16:251
134491530,4ptp4l0-21swapper/120:16:251
134491530,4ptp4l0-21swapper/100:38:541
134491530,4ptp4l0-21swapper/021:52:160
134491530,3ptp4l0-21swapper/200:00:232
134491520,4ptp4l0-21swapper/221:22:082
134491520,4ptp4l0-21swapper/220:15:192
134491520,4ptp4l0-21swapper/220:15:192
134491520,4ptp4l0-21swapper/120:39:471
134491520,4ptp4l0-21swapper/120:05:001
134491520,3ptp4l0-21swapper/020:28:160
134491510,6ptp4l41-21ksoftirqd/321:10:283
134491510,4ptp4l0-21swapper/219:26:382
134491510,4ptp4l0-21swapper/020:12:470
134491510,4ptp4l0-21swapper/020:06:160
134491510,2ptp4l32375-21runrttasks23:43:310
134491500,4ptp4l0-21swapper/122:27:291
134491500,4ptp4l0-21swapper/023:49:160
134491500,4ptp4l0-21swapper/019:35:490
134491500,3ptp4l0-21swapper/221:32:262
215099491,47cyclictest0-21swapper/323:30:503
134491490,4ptp4l0-21swapper/120:21:471
134491490,4ptp4l0-21swapper/019:41:360
134491490,3ptp4l0-21swapper/120:57:171
46198480,4rtkit-daemon0-21swapper/021:02:410
134491480,8ptp4l0-21swapper/019:21:190
134491480,5ptp4l0-21swapper/019:06:050
134491480,4ptp4l0-21swapper/220:08:482
134491480,4ptp4l0-21swapper/021:29:480
134491480,3ptp4l0-21swapper/222:44:252
134491480,3ptp4l0-21swapper/020:33:460
134491480,3ptp4l0-21swapper/000:22:140
134491480,3ptp4l0-21swapper/000:07:190
134491480,3ptp4l0-21swapper/000:07:190
134491480,11ptp4l0-21swapper/022:23:430
134491470,4ptp4l0-21swapper/022:40:330
134491470,3ptp4l0-21swapper/100:25:011
215099462,42cyclictest0-21swapper/323:22:203
215099461,44cyclictest0-21swapper/323:40:493
134491460,4ptp4l10712-21ls20:35:290
134491450,5ptp4l25835-21apt-get23:30:122
134491450,5ptp4l0-21swapper/320:55:213
134491450,4ptp4l0-21swapper/219:16:302
134491450,4ptp4l0-21swapper/121:43:511
134491450,3ptp4l0-21swapper/221:41:552
134491450,10ptp4l0-21swapper/023:10:430
134491450,10ptp4l0-21swapper/020:50:300
134491440,4ptp4l6021-21ls19:15:260
134491440,4ptp4l19888-21ls19:45:242
134491440,4ptp4l0-21swapper/300:10:373
134491440,4ptp4l0-21swapper/221:29:452
134491440,4ptp4l0-21swapper/023:50:340
134491430,9ptp4l0-21swapper/023:21:270
134491430,7ptp4l0-21swapper/323:53:273
134491430,5ptp4l5953-21memory23:55:200
134491430,5ptp4l14103-21fschecks_count20:45:153
134491430,5ptp4l0-21swapper/319:30:123
134491430,4ptp4l7532-21df00:00:150
134491430,4ptp4l1770-21ls23:45:262
134491430,4ptp4l16263-21apt-get20:50:131
134491430,4ptp4l0-21swapper/021:13:000
134491430,4ptp4l0-21swapper/020:57:410
134491430,4ptp4l0-21swapper/020:43:180
134491430,3ptp4l0-21swapper/200:20:362
134491430,3ptp4l0-21swapper/119:42:321
215099421,40cyclictest0-21swapper/300:23:093
2148994236,3cyclictest25-21ksoftirqd/100:20:001
2146994235,4cyclictest9-21ksoftirqd/023:40:000
134491420,9ptp4l0-21swapper/020:18:070
134491420,9ptp4l0-21swapper/020:18:070
134491420,5ptp4l16179-21apt-get22:00:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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