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2022-11-27 - 20:40

x86 Intel T1300 @1667 MHz, Linux 4.16.15-rt7 (Profile)

Latency plot of system in rack #6, slot #2
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 20 highest latencies:
System rack6slot2.osadl.org (updated Sun Nov 27, 2022 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6502478,8sleep00-21swapper/007:05:230
718994032,7cyclictest248850irq/16-enp2s0f011:55:500
718993932,6cyclictest248850irq/16-enp2s0f011:30:510
718993932,6cyclictest248850irq/16-enp2s0f009:15:510
718993932,6cyclictest248850irq/16-enp2s0f009:10:460
718993932,4cyclictest168050irq/16-i91512:23:240
718993833,4cyclictest248850irq/16-enp2s0f008:05:500
718993832,5cyclictest248850irq/16-enp2s0f008:17:400
718993831,6cyclictest248850irq/16-enp2s0f012:25:480
718993831,6cyclictest248850irq/16-enp2s0f009:50:490
718993831,6cyclictest248850irq/16-enp2s0f008:45:570
718993831,6cyclictest248850irq/16-enp2s0f007:55:500
718993831,6cyclictest248850irq/16-enp2s0f007:35:450
718993732,5cyclictest248850irq/16-enp2s0f009:22:510
718993732,4cyclictest248850irq/16-enp2s0f012:30:550
718993731,5cyclictest248850irq/16-enp2s0f009:35:530
718993731,5cyclictest248850irq/16-enp2s0f008:32:420
718993731,5cyclictest248850irq/16-enp2s0f007:17:300
718993730,6cyclictest248850irq/16-enp2s0f010:55:500
718993730,6cyclictest248850irq/16-enp2s0f010:47:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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