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2022-01-26 - 11:25

Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz, Linux 5.10.27-rt36 (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 Wed Jan 26, 2022 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
128586299430429,1cyclictest1700870-21kworker/11:200:30:123
128586699428428,0cyclictest19750irq/127-xhci_hc00:29:104
128586299428427,1cyclictest1700870-21kworker/11:200:29:103
1285866994270,427cyclictest0-21swapper/1200:30:124
128586299426425,1cyclictest1288498-21kworker/11:119:20:473
1285876994240,0cyclictest0-21swapper/1500:40:007
128586999423422,1cyclictest1712264-21kworker/u32:100:30:235
128586299423422,1cyclictest1288498-21kworker/11:119:11:473
128586699422421,1cyclictest0-21swapper/1219:23:274
128586699420419,1cyclictest1700018-21kworker/12:100:39:374
128586699419417,2cyclictest1283705-21kworker/u32:019:13:364
128585599419419,0cyclictest0-21swapper/900:31:4215
128582299418417,1cyclictest1712264-21kworker/u32:100:31:421
128587499417417,0cyclictest0-21swapper/1400:30:586
128585599415415,0cyclictest0-21swapper/919:12:5715
128582299414413,1cyclictest1283705-21kworker/u32:019:12:571
128586999412412,0cyclictest0-21swapper/1319:22:055
128584699409409,0cyclictest0-21swapper/719:10:1213
128583199408408,0cyclictest0-21swapper/300:30:129
128583199407405,1cyclictest0-21swapper/300:26:379
128583199404404,0cyclictest0-21swapper/319:20:489
128584699401401,0cyclictest1701946-21turbostat00:25:0013
128583199401401,0cyclictest0-21swapper/319:11:489
128586699398397,1cyclictest1700018-21kworker/12:100:24:414
128587499396395,0cyclictest1709444-21munin-run00:30:006
128586699389389,0cyclictest19750irq/127-xhci_hc19:17:044
128586699389389,0cyclictest19750irq/127-xhci_hc19:17:044
128585599385385,0cyclictest0-21swapper/900:28:1215
128585599384383,1cyclictest0-21swapper/900:35:3215
128582299384383,1cyclictest1662390-21kworker/u32:000:28:121
128582299382381,1cyclictest1623832-21kworker/u32:6100:35:311
128585599379378,1cyclictest1283705-21kworker/u32:019:22:4015
128585999377377,0cyclictest1304-21snmpd00:34:522
128582299375375,0cyclictest0-21swapper/119:22:411
128586299374374,0cyclictest0-21swapper/1100:22:383
128586299373373,0cyclictest0-21swapper/1119:18:003
128586299373373,0cyclictest0-21swapper/1119:18:003
128587699372371,1cyclictest0-21swapper/1500:35:007
128583899372371,1cyclictest1299100-21kworker/u32:419:20:4811
128586299370370,0cyclictest0-21swapper/1100:37:213
128585999370370,0cyclictest0-21swapper/1000:29:102
128585999366365,1cyclictest1294748-21kworker/u32:219:22:332
128583899365364,1cyclictest1712264-21kworker/u32:100:30:5811
128584699357357,0cyclictest0-21swapper/700:34:5213
128583899356356,0cyclictest0-21swapper/519:19:3711
128583899356356,0cyclictest0-21swapper/519:19:3611
128587699354352,2cyclictest1285359-21turbostat19:14:557
128583199354353,1cyclictest1662390-21kworker/u32:000:22:389
128583199353352,1cyclictest1283705-21kworker/u32:019:17:599
128583199353352,1cyclictest1283705-21kworker/u32:019:17:599
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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