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2026-04-16 - 17:51
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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 Thu Apr 16, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491620,5ptp4l0-21swapper/110:20:141
134491600,4ptp4l14072-21apt-get07:40:030
134491600,4ptp4l0-21swapper/012:25:140
134491590,4ptp4l0-21swapper/209:43:582
134491590,18ptp4l824-21df_inode09:30:141
134491590,17ptp4l22235-21hddtemp_smartct10:15:161
134491580,4ptp4l0-21swapper/312:05:213
134491570,3ptp4l31009-21apt-get10:35:141
134491560,4ptp4l0-21swapper/108:55:321
134491560,4ptp4l0-21swapper/108:35:231
134491560,3ptp4l0-21swapper/211:53:172
134491560,3ptp4l0-21swapper/111:01:441
134491560,3ptp4l0-21swapper/111:01:441
134491560,3ptp4l0-21swapper/107:27:191
134491550,4ptp4l0-21swapper/310:50:133
134491550,4ptp4l0-21swapper/307:07:243
134491550,4ptp4l0-21swapper/109:47:071
134491550,3ptp4l0-21swapper/111:43:261
134491540,5ptp4l0-21swapper/207:06:202
134491540,4ptp4l0-21swapper/212:17:432
134491540,4ptp4l0-21swapper/110:51:261
134491540,4ptp4l0-21swapper/108:34:451
134491540,3ptp4l0-21swapper/108:40:171
134491540,2ptp4l23016-21strings11:25:231
134491530,4ptp4l0-21swapper/211:31:112
134491530,3ptp4l7126-21meminfo12:00:201
134491530,3ptp4l22391-21meminfo09:05:211
134491530,3ptp4l0-21swapper/312:25:273
134491530,3ptp4l0-21swapper/111:50:131
134491530,3ptp4l0-21swapper/110:12:071
134491520,4ptp4l0-21swapper/009:36:420
134491520,3ptp4l0-21swapper/108:00:231
134491510,4ptp4l0-21swapper/109:12:161
134491510,3ptp4l0-21swapper/110:05:191
134491500,4ptp4l0-21swapper/108:27:101
134491500,3ptp4l0-21swapper/109:57:241
134491500,3ptp4l0-21swapper/109:18:411
134491500,3ptp4l0-21swapper/108:50:021
134491500,3ptp4l0-21swapper/107:55:271
134491500,3ptp4l0-21swapper/107:41:181
134491500,3ptp4l0-21swapper/107:10:581
134491500,3ptp4l0-21swapper/011:22:390
134491490,4ptp4l0-21swapper/307:59:193
134491490,4ptp4l0-21swapper/107:30:001
134491490,3ptp4l0-21swapper/311:15:203
134491490,3ptp4l0-21swapper/109:01:081
134491490,3ptp4l0-21swapper/107:17:191
134491480,4ptp4l0-21swapper/208:11:532
134491480,4ptp4l0-21swapper/208:11:532
134491480,4ptp4l0-21swapper/112:35:071
134491480,4ptp4l0-21swapper/010:23:060
134491480,4ptp4l0-21swapper/010:17:580
134491480,18ptp4l0-21swapper/311:50:303
134491470,4ptp4l0-21swapper/109:50:201
134491470,4ptp4l0-21swapper/012:07:220
134491470,3ptp4l0-21swapper/312:14:283
134491470,3ptp4l0-21swapper/111:11:511
134491470,15ptp4l9-21ksoftirqd/009:16:000
134491470,14ptp4l9-21ksoftirqd/009:52:160
134491470,12ptp4l0-21swapper/008:14:250
134491470,12ptp4l0-21swapper/008:14:250
134491470,11ptp4l0-21swapper/112:10:171
134691460,11getstats0-21swapper/108:16:311
134491460,5ptp4l0-21swapper/107:09:551
134491460,4ptp4l0-21swapper/312:04:283
134491460,4ptp4l0-21swapper/209:23:052
134491460,3ptp4l0-21swapper/110:58:181
134491460,10ptp4l0-21swapper/007:13:270
134491450,4ptp4l29094-21apt-get11:40:132
134491450,4ptp4l17356-21apt-get11:15:130
134491450,4ptp4l0-21swapper/312:24:493
134491450,4ptp4l0-21swapper/212:00:462
134491450,4ptp4l0-21swapper/110:02:301
134491450,4ptp4l0-21swapper/107:20:191
134491450,3ptp4l0-21swapper/108:24:551
134491450,10ptp4l0-21swapper/008:44:240
336994439,3cyclictest41-21ksoftirqd/309:20:013
134691440,11getstats0-21swapper/112:31:011
134691440,11getstats0-21swapper/112:29:341
134491440,9ptp4l0-21swapper/210:13:302
134491440,9ptp4l0-21swapper/208:36:542
134491440,9ptp4l0-21swapper/011:33:240
134491440,9ptp4l0-21swapper/009:33:260
134491440,5ptp4l0-21swapper/008:25:260
134491440,4ptp4l3647-21apt-get11:55:132
134491440,4ptp4l23796-21apt-get08:00:122
134491440,3ptp4l0-21swapper/107:39:531
134491440,3ptp4l0-21swapper/011:42:560
134491440,3ptp4l0-21swapper/011:30:010
134491440,10ptp4l0-21swapper/108:48:531
333994338,3cyclictest9-21ksoftirqd/008:20:010
134691430,11getstats0-21swapper/110:43:191
134691430,10getstats0-21swapper/108:13:111
134691430,10getstats0-21swapper/108:13:111
134691430,10getstats0-21swapper/108:05:301
134491430,9ptp4l0-21swapper/210:56:282
134491430,9ptp4l0-21swapper/210:01:082
134491430,9ptp4l0-21swapper/208:54:202
134491430,5ptp4l0-21swapper/209:35:132
134491430,4ptp4l3735-21meminfo07:15:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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