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2023-06-05 - 11:16

x86 Intel Core i9-9900K @3600 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #0, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack0slot7.osadl.org (updated Mon Jun 05, 2023 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19057382210182,16sleep90-21swapper/919:09:2215
19056872179145,19sleep70-21swapper/719:08:4813
19054872172136,20sleep50-21swapper/519:06:3811
19057522160123,21sleep40-21swapper/419:09:3310
19054472158136,6sleep140-21swapper/1419:06:156
9525101550,145AudioIP~ackRPC0-2111:22:115
19054262152120,17sleep20-21swapper/219:06:028
8325201340,124pipewire0-21swapper/319:06:019
19061409912220,58cyclictest952510AudioIP~ack11:22:119
29980101210,113AudioIPC00-21swapper/119:06:331
19061409912041,36cyclictest952510AudioIP~ack11:22:119
8321201190,66pipewire-pulse0-21swapper/619:09:4312
8321201160,105pipewire-pulse0-21swapper/1119:05:253
29980101160,110AudioIPC00-21swapper/819:06:0614
1905724211647,56sleep150-21swapper/1519:09:127
19061409911535,36cyclictest832120pipewire-pulse22:32:409
19061409911535,36cyclictest832120pipewire-pulse22:32:399
8325201140,106pipewire0-21swapper/019:05:040
19061409911128,41cyclictest1489113-21kworker/3:219:56:429
1906140991089,40cyclictest952510AudioIP~ack11:22:119
19061409910741,21cyclictest2541736-21switchtime22:00:409
1906140991062,20cyclictest832120pipewire-pulse19:35:219
19061409910543,20cyclictest2933015-21kworker/3:123:59:549
19061409910543,20cyclictest2933015-21kworker/3:123:59:539
19061409910542,42cyclictest2933015-21kworker/3:123:44:159
19061409910443,20cyclictest1489113-21kworker/3:219:24:009
19061409910443,20cyclictest1489113-21kworker/3:219:24:009
19061409910320,20cyclictest832120pipewire-pulse21:39:449
19061409910240,62cyclictest1489113-21kworker/3:220:53:369
19061409910219,42cyclictest39-21ksoftirqd/300:01:549
19061409910219,42cyclictest39-21ksoftirqd/300:01:539
19061409910139,41cyclictest0-21swapper/322:41:469
19061409910040,39cyclictest0-21swapper/319:44:499
1906140999941,16cyclictest952510AudioIP~ack11:22:119
1906140999916,62cyclictest2123176-21iostat_ios20:10:239
1906140999916,62cyclictest2123176-21iostat_ios20:10:239
1906140999634,21cyclictest1489113-21kworker/3:222:26:029
1906140999612,42cyclictest39-21ksoftirqd/323:53:309
2998010950,62AudioIPC00-21swapper/1019:07:402
1906140999559,15cyclictest2293799-21kworker/3:121:04:579
1906140999512,41cyclictest0-21swapper/319:17:119
1906140999512,41cyclictest0-21swapper/319:17:119
189100329593,1sleep120-21swapper/1219:05:254
1906140999451,21cyclictest39-21ksoftirqd/321:21:309
1906140999432,20cyclictest1489113-21kworker/3:222:48:349
1906140999313,38cyclictest3043584-21cut00:10:349
190614099929,42cyclictest1489113-21kworker/3:220:05:149
190614099929,42cyclictest1489113-21kworker/3:220:05:139
190614099928,42cyclictest2933015-21kworker/3:100:26:569
190614099928,42cyclictest1489113-21kworker/3:219:53:519
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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