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2022-01-26 - 11:30

Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz, Linux 5.15.13-rt26 (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 26, 2022 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
864739945921,436cyclictest308552-21kworker/7:023:12:5913
8648499450447,1cyclictest110558-21kworker/15:200:00:077
86472994483,3cyclictest0-21swapper/621:05:4112
86477994400,11cyclictest216949-21Isolated00:50:2415
864709943915,424cyclictest26550irq/127-xhci_hc00:15:4310
8647399434427,5cyclictest262095-21turbostat22:20:0013
8647099433432,1cyclictest26550irq/127-xhci_hc21:30:0310
8647799432431,0cyclictest0-21swapper/923:34:4915
86470994327,0cyclictest0-21swapper/420:11:5910
8647099431430,1cyclictest26550irq/127-xhci_hc20:24:3210
8647399430420,7cyclictest266598-21turbostat22:25:0013
86470994304,426cyclictest26550irq/127-xhci_hc23:37:4710
8648499429428,1cyclictest110558-21kworker/15:223:31:277
86484994290,427cyclictest0-21swapper/1522:10:007
8647099428427,1cyclictest26550irq/127-xhci_hc22:19:1710
8648499427426,1cyclictest110558-21kworker/15:220:01:037
8647699427426,1cyclictest71527-21kworker/u32:019:31:1714
8647399427426,1cyclictest71527-21kworker/u32:019:23:5013
8647399427426,1cyclictest304907-21kworker/u32:023:25:5013
8647399427424,1cyclictest225423-21turbostat21:39:5913
8647099427427,0cyclictest26550irq/127-xhci_hc20:49:2010
86467994271,0cyclictest0-21swapper/220:14:358
86479994260,426cyclictest0-21swapper/1121:56:433
86477994260,0cyclictest0-21swapper/922:35:5715
8647399426425,1cyclictest3111247-21kworker/u32:219:19:2813
8647299426425,1cyclictest3111247-21kworker/u32:222:06:2712
86472994260,426cyclictest0-21swapper/622:38:3712
86470994260,426cyclictest0-21swapper/420:07:3910
86470994260,0cyclictest0-21swapper/400:22:3910
8648499425423,2cyclictest378097-21turbostat00:29:547
8647399425424,1cyclictest373186-21kworker/u32:200:19:2913
86473994250,0cyclictest0-21swapper/723:09:5613
86473994250,0cyclictest0-21swapper/719:52:0113
8647099425424,1cyclictest26550irq/127-xhci_hc22:37:2810
8647099425424,1cyclictest26550irq/127-xhci_hc22:11:2010
8646799425424,1cyclictest3111247-21kworker/u32:222:37:298
8646799424423,1cyclictest3111247-21kworker/u32:219:13:098
8646799424422,1cyclictest178828-21kworker/u32:021:40:098
86467994240,424cyclictest0-21swapper/223:20:488
8648499423422,1cyclictest3301467-21kworker/15:119:31:117
8648499423422,1cyclictest110558-21kworker/15:223:19:317
8648499423422,1cyclictest110558-21kworker/15:220:54:037
8647799423422,1cyclictest336079-21kworker/u32:123:52:4715
8647799423422,1cyclictest0-21swapper/922:09:1115
8647099423422,1cyclictest26550irq/127-xhci_hc21:20:4910
8647099423422,1cyclictest0-21swapper/423:17:4010
8647099423422,1cyclictest0-21swapper/421:15:0910
8647099423421,2cyclictest284909-21kworker/u32:123:07:1210
8646799423422,1cyclictest3111247-21kworker/u32:220:37:378
8648499422421,1cyclictest110558-21kworker/15:223:12:597
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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