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2024-06-17 - 18:38
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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 Mon Jun 17, 2024 00:46:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1176911770,8ptp4l0-21swapper/119:08:241
3204321720,6sleep33271499cyclictest00:15:243
1325921710,8sleep03271199cyclictest20:45:190
1584621660,8sleep13271299cyclictest19:40:361
1176911580,8ptp4l0-21swapper/019:06:170
32262211998,9sleep30-21swapper/319:07:543
1176911170,14ptp4l0-21swapper/219:06:222
117691730,5ptp4l3986-21sed23:15:220
117691680,1ptp4l0-21swapper/323:50:343
117691660,4ptp4l4689-21systemctl20:25:380
113192650,2sleep00-21swapper/020:40:250
117691630,2ptp4l0-21swapper/100:30:151
117691630,2ptp4l0-21swapper/023:00:260
117691600,4ptp4l31886-21iostat_ios00:15:220
117691590,8ptp4l0-21swapper/219:51:322
117691590,2ptp4l0-21swapper/320:25:273
117691590,2ptp4l0-21swapper/223:49:562
117691590,2ptp4l0-21swapper/222:10:002
117691590,2ptp4l0-21swapper/220:08:052
117691590,2ptp4l0-21swapper/220:00:582
176672580,3sleep13271299cyclictest22:35:331
117691580,8ptp4l0-21swapper/220:59:102
117691580,2ptp4l0-21swapper/019:15:300
117691570,2ptp4l0-21swapper/222:42:502
117691570,2ptp4l0-21swapper/222:22:012
117691570,2ptp4l0-21swapper/222:22:002
117691570,2ptp4l0-21swapper/219:45:262
117691570,2ptp4l0-21swapper/219:45:262
117691570,2ptp4l0-21swapper/122:40:061
117691570,2ptp4l0-21swapper/120:02:451
117691570,2ptp4l0-21swapper/019:36:400
117691570,1ptp4l0-21swapper/020:05:370
117691560,6ptp4l20787-21snmpd21:25:420
117691560,2ptp4l0-21swapper/322:42:193
117691560,2ptp4l0-21swapper/200:35:182
117691560,2ptp4l0-21swapper/021:34:430
117691550,4ptp4l2285-21runrttasks23:10:381
117691550,2ptp4l0-21swapper/223:29:102
117691550,2ptp4l0-21swapper/220:20:532
117691550,2ptp4l0-21swapper/219:55:122
117691550,2ptp4l0-21swapper/120:35:121
117691550,2ptp4l0-21swapper/022:32:340
117691550,2ptp4l0-21swapper/019:24:430
117691550,1ptp4l0-21swapper/123:37:321
117691550,1ptp4l0-21swapper/100:10:301
32713995415,5cyclictest33-21ksoftirqd/221:58:592
32713995415,5cyclictest33-21ksoftirqd/200:34:052
117691540,2ptp4l0-21swapper/223:10:512
117691540,2ptp4l0-21swapper/221:32:412
117691540,2ptp4l0-21swapper/221:18:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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