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2022-10-04 - 01:58

x86 Intel Core i3-4330T @3000 MHz, Linux 3.18.11-rt7 (Profile)

Latency plot of system in rack #9, slot #6
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 rack9slot6.osadl.org (updated Mon Oct 03, 2022 12:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
310652151135sleep20-21swapper/207:05:312
31133213095sleep30-21swapper/307:06:243
31343212691sleep10-21swapper/107:09:071
31389211383sleep00-21swapper/007:09:420
3170799227cyclictest0-21swapper/309:49:593
3170799222cyclictest17050irq/27-i91512:35:003
3170799222cyclictest17050irq/27-i91510:55:003
31707992120cyclictest3505-21kworker/u8:009:23:003
31707992120cyclictest17050irq/27-i91508:48:003
31707992120cyclictest17050irq/27-i91508:45:003
31707992119cyclictest14199-21grep07:40:223
31707992118cyclictest0-21swapper/309:05:233
31707992118cyclictest0-21swapper/307:55:273
31707992018cyclictest0-21swapper/309:25:173
31707992018cyclictest0-21swapper/307:45:253
31707991917cyclictest17050irq/27-i91509:20:003
31704991917cyclictest27267-21latency_hist11:45:010
31707991816cyclictest17050irq/27-i91508:35:003
31704991814cyclictest451-21dbus-daemon12:20:010
3170799171cyclictest17050irq/27-i91508:22:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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