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2026-04-03 - 08:50
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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 Fri Apr 03, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491660,5ptp4l28954-21apt-get23:55:123
247302590,3sleep124731-21grep22:35:211
134491590,5ptp4l0-21swapper/219:08:312
134491590,5ptp4l0-21swapper/100:35:141
134491570,3ptp4l0-21swapper/123:55:231
134491570,3ptp4l0-21swapper/123:05:241
134491560,4ptp4l0-21swapper/120:11:071
134491560,3ptp4l0-21swapper/322:35:123
134491560,3ptp4l0-21swapper/320:31:483
134491560,3ptp4l0-21swapper/022:35:190
134491550,5ptp4l0-21swapper/223:39:512
134491550,3ptp4l0-21swapper/223:32:302
134491540,4ptp4l0-21swapper/222:15:252
134491540,3ptp4l0-21swapper/121:38:061
134491540,3ptp4l0-21swapper/120:35:161
134491540,13ptp4l0-21swapper/323:20:283
261232530,4sleep00-21swapper/021:30:160
134491530,3ptp4l0-21swapper/120:59:571
134491530,3ptp4l0-21swapper/100:20:161
134491530,10ptp4l0-21swapper/121:06:591
252332520,2sleep024874-21cyclictest20:20:120
2487899524,3cyclictest0-21swapper/323:10:513
134491520,4ptp4l0-21swapper/122:12:371
134491520,4ptp4l0-21swapper/120:15:191
134491520,3ptp4l0-21swapper/122:00:201
134491520,3ptp4l0-21swapper/120:42:361
134491520,3ptp4l0-21swapper/120:32:141
134491520,19ptp4l9-21ksoftirqd/000:25:140
134491520,13ptp4l0-21swapper/221:30:002
2487899515,6cyclictest738-21mailstats19:25:243
134491510,4ptp4l0-21swapper/300:03:323
134491510,4ptp4l0-21swapper/222:48:462
134491510,4ptp4l0-21swapper/123:29:001
134491510,4ptp4l0-21swapper/122:53:211
134491510,4ptp4l0-21swapper/100:30:261
134491510,3ptp4l0-21swapper/123:11:101
134491510,3ptp4l0-21swapper/100:07:281
134491510,13ptp4l0-21swapper/221:13:182
134491510,11ptp4l0-21swapper/323:30:183
134491500,4ptp4l0-21swapper/323:41:533
134491500,4ptp4l0-21swapper/321:10:103
134491500,4ptp4l0-21swapper/121:17:141
134491500,4ptp4l0-21swapper/121:17:141
134491500,4ptp4l0-21swapper/120:50:121
134491500,3ptp4l17134-21diskstats22:20:152
24877994942,4cyclictest24469-21fschecks_count22:35:172
134491490,9ptp4l14149-21apt-get21:05:142
134491490,4ptp4l0-21swapper/322:45:433
134491490,4ptp4l0-21swapper/322:01:083
134491490,4ptp4l0-21swapper/123:35:511
134491490,3ptp4l0-21swapper/222:43:142
134491490,10ptp4l0-21swapper/119:50:131
134491480,4ptp4l0-21swapper/320:38:523
134491480,4ptp4l0-21swapper/220:58:352
134491480,3ptp4l0-21swapper/220:52:562
134491480,12ptp4l0-21swapper/322:15:403
134491480,10ptp4l0-21swapper/119:22:351
134491470,4ptp4l0-21swapper/223:13:522
134491470,4ptp4l0-21swapper/123:18:581
134491470,4ptp4l0-21swapper/023:31:270
134491470,3ptp4l0-21swapper/120:04:161
134491470,17ptp4l0-21swapper/100:14:171
134491470,11ptp4l0-21swapper/221:20:232
134491460,4ptp4l0-21swapper/121:55:351
134491460,3ptp4l0-21swapper/323:37:053
134491460,3ptp4l0-21swapper/123:21:261
134491460,3ptp4l0-21swapper/121:45:261
134491460,3ptp4l0-21swapper/000:22:540
2487899451,3cyclictest121rcu_preempt21:28:513
2487899451,2cyclictest121rcu_preempt00:36:013
134691450,10getstats0-21swapper/320:40:033
134491450,3ptp4l13151-21apt-get00:30:142
134491450,3ptp4l0-21swapper/221:59:472
134491450,3ptp4l0-21swapper/122:26:531
134491450,11ptp4l0-21swapper/121:31:161
134491440,4ptp4l11422-21ls23:15:190
134491440,3ptp4l0-21swapper/119:43:201
134491440,3ptp4l0-21swapper/119:36:231
134491440,3ptp4l0-21swapper/100:25:221
134491440,3ptp4l0-21swapper/100:00:181
134491440,3ptp4l0-21swapper/023:00:460
134491440,10ptp4l9-21ksoftirqd/021:41:280
134491440,10ptp4l0-21swapper/219:56:072
2487899435,5cyclictest41-21ksoftirqd/320:05:263
2487899431,2cyclictest121rcu_preempt19:55:233
24878994312,4cyclictest41-21ksoftirqd/300:15:273
134691430,11getstats0-21swapper/322:40:193
134491430,9ptp4l0-21swapper/223:18:012
134491430,9ptp4l0-21swapper/222:29:412
134491430,8ptp4l0-21swapper/319:05:203
134491430,6ptp4l0-21swapper/319:10:003
134491430,5ptp4l0-21swapper/322:10:123
134491430,4ptp4l31875-21apt-get19:25:111
134491430,4ptp4l0-21swapper/021:47:320
134491430,3ptp4l4726-21apt-get20:45:112
134491430,3ptp4l4726-21apt-get20:45:112
134491430,3ptp4l15655-21apt-get00:35:110
134491430,3ptp4l1372-21apt-get00:05:120
134491430,3ptp4l0-21swapper/223:45:262
134491430,3ptp4l0-21swapper/120:20:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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