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2022-05-17 - 22:06

x86 Intel Atom E640 @1000 MHz, Linux 3.18.11-rt7 (Profile)

Latency plot of system in rack #9, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
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 20 highest latencies:
System rack9slot4.osadl.org (updated Tue May 17, 2022 12:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24896113474sleep0-21swapper/110:47:461
70501270irq/18-mmc12516799cyclictest14:38:390
25167991239cyclictest0-21swapper/015:33:500
251679911910cyclictest10559-21latency_hist15:07:590
25167991186cyclictest1522-21diskstats13:53:150
25167991186cyclictest1522-21diskstats13:53:150
25167991183cyclictest11157-21latency_hist13:12:560
251679911210cyclictest0-21swapper/016:02:000
251679911179cyclictest6950irq/18-mmc011:03:110
251679911175cyclictest0-21swapper/013:48:260
25028111174sleep0-21swapper/010:47:510
25167991109cyclictest0-21swapper/015:22:590
25167991108cyclictest10063-21ssh16:04:060
25167991108cyclictest0-21swapper/011:43:060
25167991103cyclictest14368-21sh16:13:010
25167991098cyclictest0-21swapper/011:02:520
25167991093cyclictest18923-21latency_hist15:22:590
25167991087cyclictest31894-21latency_hist14:47:580
251679910866cyclictest5350irq/18-pch-dma15:43:000
25167991078cyclictest0-21swapper/012:37:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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