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2025-05-09 - 07:21
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 50 highest latencies:
System rack9slot2.osadl.org (updated Fri May 09, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33502348268,26sleep10-21swapper/11
364699283277,4cyclictest8156-21perf0
34442252184,55sleep20-21swapper/22
32722244173,24sleep30-21swapper/33
33292228190,25sleep00-21swapper/00
365999220214,3cyclictest8136-21munin-run3
365199206198,5cyclictest8177-21idleruntime-cro1
365499187182,3cyclictest8178-21sendmail2
247492500,1sleep10-21swapper/11
220852460,4sleep00-21swapper/00
92222440,1sleep30-21swapper/33
223782420,1sleep30-21swapper/33
12002410,3sleep00-21swapper/00
249122340,2sleep30-21swapper/33
3646993229,2cyclictest101rcuc/00
365999280,26cyclictest24612-21kworker/3:03
364699271,14cyclictest4324-21expr0
3654992612,11cyclictest9834-21seq2
3651992620,4cyclictest16219-21apt-config1
364699261,10cyclictest10705-21expr0
305652260,1sleep20-21swapper/22
364699243,8cyclictest3763-21seq0
364699242,6cyclictest5863-21seq0
3646992418,4cyclictest18196-21apt0
364699240,8cyclictest9-21ksoftirqd/00
260952240,3sleep126098-21unixbench_multi1
365499235,16cyclictest12189-21cat2
365499230,20cyclictest24503-40mandb2
364699232,7cyclictest1999-21taskset0
364699231,8cyclictest18498-21appstreamcli0
364699231,6cyclictest9-21ksoftirqd/00
364699231,6cyclictest31710-21seq0
3646992316,5cyclictest505-21dbus-daemon0
3646992315,5cyclictest15877-21sendmail0
364699230,9cyclictest9-21ksoftirqd/00
364699230,9cyclictest9-21ksoftirqd/00
364699230,6cyclictest9-21ksoftirqd/00
364699230,6cyclictest9-21ksoftirqd/00
364699230,6cyclictest9-21ksoftirqd/00
3659992217,3cyclictest35-21ksoftirqd/33
3659992216,3cyclictest6934-21ntpq3
3659992215,4cyclictest20280-21latency_hist3
3654992217,3cyclictest20477-21munin-run2
3651992218,2cyclictest304592sleep11
3651992215,5cyclictest11266-21awk1
3651992215,4cyclictest4527-21diskstats1
3651992214,5cyclictest15962-21sh1
3651992213,6cyclictest9027-21cat1
364699225,9cyclictest9-21ksoftirqd/00
364699225,9cyclictest9-21ksoftirqd/00
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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