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2026-08-07 - 01:41
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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 Aug 06, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491630,11ptp4l0-21swapper/223:59:542
134491610,4ptp4l0-21swapper/122:20:551
134491590,4ptp4l0-21swapper/021:35:170
134491590,19ptp4l11922-21apt23:20:111
134491590,18ptp4l0-21swapper/120:15:151
248512580,4sleep20-21swapper/223:45:222
134491580,4ptp4l0-21swapper/121:45:311
134491570,4ptp4l0-21swapper/121:20:231
134491570,3ptp4l24946-21apt-get21:30:142
134491570,3ptp4l0-21swapper/223:09:462
134491550,5ptp4l0-21swapper/000:24:100
134491550,3ptp4l0-21swapper/022:54:340
32002540,6sleep32481999cyclictest19:30:253
134491540,4ptp4l0-21swapper/320:55:213
134491540,4ptp4l0-21swapper/223:27:392
134491540,3ptp4l0-21swapper/220:50:182
134491540,3ptp4l0-21swapper/022:45:400
134491530,9ptp4l0-21swapper/220:14:012
134491530,4ptp4l0-21swapper/221:21:542
134491530,3ptp4l0-21swapper/122:45:271
134491530,3ptp4l0-21swapper/119:25:171
134491530,2ptp4l0-21swapper/323:01:233
134491520,4ptp4l0-21swapper/220:19:102
134491520,3ptp4l0-21swapper/221:08:352
134491510,4ptp4l0-21swapper/223:30:102
134491510,4ptp4l0-21swapper/223:19:122
134491510,4ptp4l0-21swapper/120:03:491
134491510,4ptp4l0-21swapper/119:49:131
308282500,5sleep10-21swapper/100:00:141
2481799502,2cyclictest0-21swapper/100:26:591
2481599505,5cyclictest9-21ksoftirqd/000:05:150
134491500,9ptp4l23328-21irqstats19:05:180
134491500,4ptp4l0-21swapper/223:10:002
134491500,4ptp4l0-21swapper/219:31:502
134491490,5ptp4l0-21swapper/021:50:130
134491490,4ptp4l0-21swapper/321:25:103
134491490,4ptp4l0-21swapper/300:33:303
134491490,4ptp4l0-21swapper/222:42:562
134491490,4ptp4l0-21swapper/222:16:592
134491490,4ptp4l0-21swapper/221:36:312
134491490,4ptp4l0-21swapper/221:10:512
134491490,4ptp4l0-21swapper/220:58:122
134491490,4ptp4l0-21swapper/019:22:340
134491490,4ptp4l0-21swapper/019:18:580
134491490,3ptp4l0-21swapper/222:37:372
134491490,3ptp4l0-21swapper/019:57:170
134491490,2ptp4l27060-21ntp_states23:50:221
2481799483,43cyclictest0-21swapper/122:02:191
2481799483,43cyclictest0-21swapper/122:02:191
2481799481,45cyclictest0-21swapper/123:30:391
134491480,4ptp4l0-21swapper/322:05:363
134491480,4ptp4l0-21swapper/123:11:031
134491480,3ptp4l0-21swapper/123:25:081
134491480,10ptp4l0-21swapper/100:30:311
134491470,3ptp4l0-21swapper/122:08:131
134491470,3ptp4l0-21swapper/119:44:031
134491470,3ptp4l0-21swapper/119:20:151
134491470,3ptp4l0-21swapper/023:47:450
134491470,3ptp4l0-21swapper/023:12:320
134491460,8ptp4l0-21swapper/220:07:402
134491460,7ptp4l22905-21perl19:05:151
134491460,4ptp4l0-21swapper/323:24:453
134491460,4ptp4l0-21swapper/320:17:513
134491460,4ptp4l0-21swapper/021:58:080
24817994539,4cyclictest828-21grep22:55:181
24815994540,3cyclictest9-21ksoftirqd/023:40:000
24815994517,3cyclictest9-21ksoftirqd/021:14:590
24815994515,7cyclictest9-21ksoftirqd/020:20:140
134491450,5ptp4l2318-21gnome-shell19:34:580
134491450,4ptp4l14941-21ls21:05:293
134491450,4ptp4l0-21swapper/320:21:343
134491450,4ptp4l0-21swapper/119:38:431
134491450,4ptp4l0-21swapper/022:15:480
134491450,3ptp4l0-21swapper/020:30:560
24815994414,4cyclictest9-21ksoftirqd/022:33:390
24815994413,4cyclictest9-21ksoftirqd/022:10:000
134691440,12getstats0-21swapper/123:01:581
134691440,11getstats0-21swapper/121:15:041
134491440,5ptp4l0-21swapper/321:30:123
134491440,4ptp4l12492-21apt-get00:30:142
134491440,3ptp4l2318-21gnome-shell19:27:593
134491440,3ptp4l0-21swapper/123:56:191
134491440,3ptp4l0-21swapper/122:44:091
134491440,3ptp4l0-21swapper/100:15:011
134491440,10ptp4l0-21swapper/223:54:302
24818994332,9cyclictest33-21ksoftirqd/221:55:302
2481899431,3cyclictest121rcu_preempt19:14:142
2481799432,39cyclictest0-21swapper/121:31:181
24815994310,6cyclictest9-21ksoftirqd/020:18:390
134691430,10getstats0-21swapper/123:38:041
134691430,10getstats0-21swapper/123:18:531
134491430,9ptp4l0-21swapper/220:24:562
134491430,3ptp4l0-21swapper/100:23:031
2481899428,7cyclictest33-21ksoftirqd/220:40:002
24818994237,3cyclictest33-21ksoftirqd/200:20:002
24818994236,3cyclictest33-21ksoftirqd/220:45:192
2481899420,3cyclictest121rcu_preempt22:51:152
2481599428,4cyclictest9-21ksoftirqd/019:27:490
24815994237,3cyclictest9-21ksoftirqd/023:19:380
24815994210,6cyclictest9-21ksoftirqd/021:32:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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