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2024-07-16 - 08:39
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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 Jul 15, 2024 12:46:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1176911710,15ptp4l0-21swapper/207:06:152
1176911630,16ptp4l0-21swapper/307:07:213
1176911600,15ptp4l0-21swapper/107:08:071
2966121550,7sleep11929099cyclictest09:45:291
1176911550,42ptp4l0-21swapper/007:05:070
1176911130,12ptp4l0-21swapper/007:10:020
407821000,8sleep31929299cyclictest11:06:453
222872950,4sleep2321ktimersoftd/208:25:112
222882790,8sleep01928999cyclictest11:45:330
222882790,8sleep01928999cyclictest11:45:320
117691680,2ptp4l0-21swapper/107:40:371
117691640,1ptp4l0-21swapper/207:14:312
117691640,1ptp4l0-21swapper/111:50:191
117691630,9ptp4l0-21swapper/212:30:012
117691620,7ptp4l0-21swapper/211:39:172
117691620,7ptp4l0-21swapper/211:39:172
117691620,2ptp4l0-21swapper/110:45:361
117691620,2ptp4l0-21swapper/011:26:300
117691610,5ptp4l27566-21cat07:25:291
117691610,10ptp4l0-21swapper/207:40:472
55198600,2rtkit-daemon0-21swapper/212:36:102
19290996030,4cyclictest25-21ksoftirqd/108:37:301
117691600,2ptp4l0-21swapper/109:27:211
1929299593,9cyclictest1-21systemd08:37:163
117691590,2ptp4l0-21swapper/111:35:291
117691590,2ptp4l0-21swapper/111:35:281
117691590,2ptp4l0-21swapper/107:35:211
117691580,4ptp4l4094-21ntp_states08:50:302
117691580,4ptp4l17397-21diskstats09:20:160
117691580,2ptp4l0-21swapper/111:15:331
117691570,2ptp4l0-21swapper/210:40:272
117691570,2ptp4l0-21swapper/108:46:511
117691570,2ptp4l0-21swapper/009:35:060
117691570,2ptp4l0-21swapper/008:55:270
19292995620,10cyclictest41-21ksoftirqd/311:20:323
117791560,12getstats0-21swapper/210:25:462
117691560,2ptp4l0-21swapper/211:55:302
117691560,2ptp4l0-21swapper/209:00:202
117691560,2ptp4l0-21swapper/208:40:472
117691560,2ptp4l0-21swapper/112:17:281
117691560,2ptp4l0-21swapper/011:10:410
117691560,2ptp4l0-21swapper/009:19:150
117691560,12ptp4l0-21swapper/107:54:331
19292995522,9cyclictest41-21ksoftirqd/307:24:593
19292995521,9cyclictest41-21ksoftirqd/308:44:593
117691550,4ptp4l15380-21apt-get08:10:120
117691550,2ptp4l0-21swapper/311:00:433
117691550,2ptp4l0-21swapper/310:45:293
117691550,2ptp4l0-21swapper/211:50:492
117691550,2ptp4l0-21swapper/211:25:432
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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