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2026-05-03 - 20:07
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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 Sun May 03, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
178122800,4sleep117815-21sendmail_mailqu11:15:241
134491750,3ptp4l0-21swapper/312:39:423
14182650,5sleep10-21swapper/111:50:231
134491630,3ptp4l22531-21users07:55:282
134491630,21ptp4l0-21swapper/311:42:013
134491600,4ptp4l0-21swapper/309:40:293
134491590,4ptp4l0-21swapper/307:35:273
134491590,4ptp4l0-21swapper/009:00:180
134491580,4ptp4l0-21swapper/112:35:281
134491580,4ptp4l0-21swapper/011:25:170
134491580,4ptp4l0-21swapper/010:50:170
134491570,4ptp4l0-21swapper/311:55:183
134491570,4ptp4l0-21swapper/007:20:230
134491570,14ptp4l0-21swapper/009:15:290
134491560,4ptp4l0-21swapper/311:06:133
134491560,4ptp4l0-21swapper/310:36:083
208592550,5sleep23215199cyclictest10:15:012
134491550,3ptp4l0-21swapper/207:17:132
134491540,3ptp4l0-21swapper/207:42:572
134491540,3ptp4l0-21swapper/207:42:562
134491540,10ptp4l0-21swapper/307:10:143
134491540,10ptp4l0-21swapper/307:10:143
134491530,3ptp4l8636-21mailstats10:55:250
134491530,3ptp4l0-21swapper/307:24:073
134491530,12ptp4l29819-21apt-get07:05:141
134491520,5ptp4l0-21swapper/107:40:281
134491520,5ptp4l0-21swapper/107:40:281
134491520,4ptp4l0-21swapper/210:28:432
134491520,4ptp4l0-21swapper/109:02:271
134491520,3ptp4l0-21swapper/309:12:563
134491520,3ptp4l0-21swapper/210:15:102
134491520,3ptp4l0-21swapper/011:00:250
134491510,4ptp4l0-21swapper/312:06:063
134491510,4ptp4l0-21swapper/212:29:592
134491510,4ptp4l0-21swapper/211:05:232
134491510,3ptp4l0-21swapper/310:49:103
134491510,3ptp4l0-21swapper/310:42:403
134491500,4ptp4l0-21swapper/308:31:103
134491500,4ptp4l0-21swapper/211:44:462
134491500,4ptp4l0-21swapper/210:00:342
134491500,4ptp4l0-21swapper/209:22:162
134491500,4ptp4l0-21swapper/012:16:090
134491500,4ptp4l0-21swapper/012:01:090
134491500,18ptp4l25-21ksoftirqd/108:58:131
134491500,18ptp4l25-21ksoftirqd/108:58:121
134491500,17ptp4l0-21swapper/210:24:592
134491500,12ptp4l0-21swapper/308:40:193
134491490,4ptp4l3215299cyclictest11:00:563
134491490,4ptp4l3214999cyclictest12:37:220
134491490,4ptp4l3214999cyclictest08:58:100
134491490,4ptp4l3214999cyclictest08:58:100
134491490,4ptp4l0-21swapper/309:46:113
134491490,4ptp4l0-21swapper/309:19:473
134491490,4ptp4l0-21swapper/308:46:543
134491490,4ptp4l0-21swapper/308:03:543
134491490,4ptp4l0-21swapper/307:59:113
134491490,4ptp4l0-21swapper/307:29:563
134491490,3ptp4l0-21swapper/210:45:182
134491490,3ptp4l0-21swapper/208:50:472
134491490,14ptp4l27118-21which10:25:283
134491480,4ptp4l0-21swapper/310:10:103
134491480,4ptp4l0-21swapper/212:04:582
134491480,4ptp4l0-21swapper/108:17:131
134491480,4ptp4l0-21swapper/007:59:200
134491480,4ptp4l0-21swapper/007:50:200
134491480,3ptp4l0-21swapper/208:12:292
134491480,13ptp4l0-21swapper/110:20:001
134491470,8ptp4l31897-21ls07:10:000
134491470,4ptp4l3215299cyclictest09:07:003
134491470,4ptp4l0-21swapper/310:00:003
134491470,4ptp4l0-21swapper/211:48:532
134491470,4ptp4l0-21swapper/012:34:470
134491470,4ptp4l0-21swapper/008:37:390
134491470,3ptp4l0-21swapper/312:32:233
134491470,3ptp4l0-21swapper/211:00:402
134491470,11ptp4l0-21swapper/112:00:231
134491460,4ptp4l0-21swapper/008:43:320
134491460,3ptp4l0-21swapper/209:36:392
134491460,11ptp4l0-21swapper/009:30:170
134491450,4ptp4l0-21swapper/209:54:482
134491450,4ptp4l0-21swapper/209:26:562
134491450,4ptp4l0-21swapper/009:28:180
134491450,4ptp4l0-21swapper/007:30:340
134491450,3ptp4l0-21swapper/308:52:063
134491450,3ptp4l0-21swapper/209:10:172
134491450,11ptp4l0-21swapper/109:05:281
134491440,9ptp4l0-21swapper/008:07:460
134491440,4ptp4l18568-21apt-get07:50:131
134491440,4ptp4l0-21swapper/209:58:032
134491440,3ptp4l0-21swapper/311:52:233
134491440,3ptp4l0-21swapper/207:20:042
134491440,10ptp4l0-21swapper/010:46:090
134491430,6ptp4l28621-21iostat11:40:191
134491430,6ptp4l17567-21/usr/sbin/munin12:25:220
134491430,5ptp4l5822-21meminfo09:40:200
134491430,5ptp4l0-21swapper/112:15:171
134491430,4ptp4l32392-21apt-get08:20:113
134491430,4ptp4l0-21swapper/309:50:473
134491430,4ptp4l0-21swapper/209:41:212
134491430,4ptp4l0-21swapper/009:55:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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