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2024-09-13 - 06:40
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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 50 highest latencies:
System rackdslot1.osadl.org (updated Fri Sep 13, 2024 00:46:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1176911730,8ptp4l0-21swapper/119:09:221
1176911710,16ptp4l0-21swapper/019:07:080
1370421660,6sleep02471799cyclictest00:25:310
1176911410,29ptp4l33-21ksoftirqd/219:06:252
1176911230,14ptp4l0-21swapper/319:06:453
263832810,8sleep32472099cyclictest21:30:133
117691730,2ptp4l0-21swapper/123:49:001
311502640,2sleep10-21swapper/121:40:141
117691630,4ptp4l0-21swapper/123:55:171
2471799622,20cyclictest13006-21fschecks_count22:10:190
117691620,2ptp4l0-21swapper/222:57:152
257172610,6sleep02471799cyclictest19:10:210
117691610,5ptp4l28577-21/usr/sbin/munin21:35:193
117691610,10ptp4l0-21swapper/121:08:101
2471799609,13cyclictest6452-21phc2sys-jitter20:45:270
24720995945,7cyclictest41-21ksoftirqd/323:10:113
237702590,3sleep10-21swapper/121:25:011
117691590,2ptp4l0-21swapper/000:22:110
117691580,1ptp4l0-21swapper/123:23:251
55198570,7rtkit-daemon0-21swapper/120:55:191
2471799575,12cyclictest3961-21ls00:05:330
117691570,1ptp4l0-21swapper/023:33:250
2471799565,13cyclictest29838-21sed20:25:290
2471799564,13cyclictest29323-21/usr/sbin/munin22:45:140
117691560,2ptp4l0-21swapper/300:38:423
117691560,2ptp4l0-21swapper/123:14:461
117691560,2ptp4l0-21swapper/023:50:130
117691560,2ptp4l0-21swapper/022:25:200
117691560,1ptp4l0-21swapper/023:14:260
117691560,11ptp4l0-21swapper/120:07:511
2471799554,13cyclictest8675-21latency_hist23:09:590
2471799553,13cyclictest32685-21latency_hist20:35:000
2471799552,14cyclictest14028-21grep19:55:140
2471799552,13cyclictest5015-21latency_hist20:45:000
2471799552,13cyclictest5015-21latency_hist20:45:000
117691550,3ptp4l0-21swapper/320:15:003
117691550,2ptp4l0-21swapper/123:30:441
117691550,2ptp4l0-21swapper/021:00:320
117691550,1ptp4l0-21swapper/120:31:481
117691550,1ptp4l0-21swapper/120:16:081
117691550,1ptp4l0-21swapper/020:15:130
24720995440,6cyclictest41-21ksoftirqd/322:20:113
117691540,2ptp4l0-21swapper/123:39:101
117691540,2ptp4l0-21swapper/119:50:251
117691540,2ptp4l0-21swapper/020:10:170
117691540,1ptp4l0-21swapper/121:37:301
117691540,1ptp4l0-21swapper/119:39:131
2471799538,6cyclictest0-21swapper/000:35:210
2471799536,13cyclictest1721-21gnome-shell22:16:590
2471799534,12cyclictest31126-21missed_timers23:55:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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