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2021-01-20 - 13:08

Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz, Linux 5.10.1-rt20 (Profile)

Latency plot of system in rack #0, slot #8
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 -Up99 -i200 -h400 -q done
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 rack0slot8.osadl.org (updated Wed Jan 20, 2021 00:45:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63888499238236,2cyclictest1009820-21kworker/12:123:41:024
63888499151150,1cyclictest900828-21kworker/12:022:21:314
63888499120119,1cyclictest900828-21kworker/12:022:12:554
638884999595,0cyclictest1009820-21kworker/12:123:33:214
63886899780,77cyclictest967041-21meminfo22:45:120
63888499590,56cyclictest0-21swapper/1220:49:504
63888499590,56cyclictest0-21swapper/1220:49:494
63888499581,53cyclictest0-21swapper/1221:06:524
63888499570,55cyclictest0-21swapper/1222:35:214
63888499560,54cyclictest0-21swapper/1221:04:404
63888499560,52cyclictest0-21swapper/1221:35:184
638883995653,1cyclictest2185205-21ThreadPoolForeg22:45:003
63888499550,52cyclictest2965631-21Compositor20:52:194
63888499550,51cyclictest0-21swapper/1222:17:444
638884995453,1cyclictest900828-21kworker/12:021:41:214
638875995311,42cyclictest0-21swapper/600:34:0312
63886999533,25cyclictest0-21swapper/123:26:401
63888499520,51cyclictest0-21swapper/1221:10:364
63888899510,50cyclictest985283-21meminfo23:05:107
63886999511,24cyclictest642906-21ThreadPoolForeg21:09:101
638888995018,32cyclictest0-21swapper/1522:35:037
63888499501,47cyclictest0-21swapper/1223:07:294
63888499490,45cyclictest0-21swapper/1223:22:144
63888499490,36cyclictest0-21swapper/1221:21:564
638875994939,6cyclictest0-21swapper/600:17:4012
63886999490,48cyclictest935136-21meminfo22:10:121
638884994848,0cyclictest197287-21kworker/12:121:30:164
63888299480,47cyclictest939971-21meminfo22:15:112
63888899471,42cyclictest0-21swapper/1521:11:177
63888499470,43cyclictest0-21swapper/1223:36:384
63888499461,43cyclictest0-21swapper/1200:15:534
63888499450,42cyclictest0-21swapper/1220:59:594
638874994513,25cyclictest6259-21Chrome_ChildIOT21:17:5011
638885994434,8cyclictest0-21swapper/1300:17:395
638884994434,9cyclictest52750irq/155-i91523:02:544
638884994418,25cyclictest0-21swapper/1222:05:364
63888499440,41cyclictest52750irq/155-i91522:34:534
638874994442,1cyclictest0-21swapper/523:22:5111
63886999447,12cyclictest0-21swapper/122:18:061
63888499430,40cyclictest0-21swapper/1221:53:284
63888499430,27cyclictest0-21swapper/1223:18:294
638882994340,1cyclictest2635041-1kworker/u33:222:50:462
638882994340,1cyclictest2635041-1kworker/u33:222:50:462
63888899421,7cyclictest0-21swapper/1520:53:067
63888599420,1cyclictest6250-21chrome22:09:185
638884994242,0cyclictest900828-21kworker/12:022:42:044
63888499420,1cyclictest0-21swapper/1223:10:074
638883994239,2cyclictest3766-21gnome-shell20:49:503
638883994239,2cyclictest3766-21gnome-shell20:49:493
638883994210,26cyclictest0-21swapper/1121:43:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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