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2023-03-24 - 20:39

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 Fri Mar 24, 2023 12:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
155352399,8sleep10-21swapper/107:03:201
151012398,8sleep00-21swapper/006:58:540
15602993534,0cyclictest248850irq/16-enp2s0f009:00:220
15603993433,0cyclictest168050irq/16-i91511:50:041
15603993432,1cyclictest168050irq/16-i91510:31:091
15603993432,1cyclictest168050irq/16-i91509:12:451
15603993432,1cyclictest168050irq/16-i91509:07:001
15603993430,3cyclictest168050irq/16-i91508:38:431
15602993433,0cyclictest248850irq/16-enp2s0f010:18:520
15602993433,0cyclictest248850irq/16-enp2s0f008:48:370
15602993432,1cyclictest248850irq/16-enp2s0f012:13:370
15602993432,1cyclictest248850irq/16-enp2s0f011:43:460
15602993432,1cyclictest248850irq/16-enp2s0f011:18:520
15602993432,1cyclictest248850irq/16-enp2s0f010:14:050
15602993432,1cyclictest248850irq/16-enp2s0f008:38:520
15602993432,1cyclictest248850irq/16-enp2s0f008:08:370
15602993432,1cyclictest248850irq/16-enp2s0f007:28:410
15603993332,0cyclictest248850irq/16-enp2s0f011:58:411
15603993332,0cyclictest248850irq/16-enp2s0f010:22:111
15603993332,0cyclictest248850irq/16-enp2s0f009:48:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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