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2022-01-23 - 09:55

Intel(R) Core(TM) i7 CPU X 980 @ 3.33GHz, Linux 3.12.31-rt45 (Profile)

Latency plot of system in rack #3, slot #3
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
Characteristics of the 10 highest latencies:
System rack3slot3.osadl.org (updated Sun Jan 23, 2022 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18021210895sleep40-21swapper/417:22:396
17980210895sleep90-21swapper/917:22:0811
17937210895sleep10-21swapper/117:21:361
15044210892sleep00-21swapper/017:19:460
18024210492sleep70-21swapper/717:22:429
123501010irq/42-ahci0-21swapper/817:24:0910
4238501000irq/52-eth0-rx-0-21swapper/217:23:524
12350940irq/42-ahci0-21swapper/317:19:575
423850900irq/52-eth0-rx-0-21swapper/517:20:577
1796726553sleep110-21swapper/1117:21:583
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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