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2025-05-02 - 12:54
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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 02, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204772294256,25sleep00-21swapper/00
206172249184,24sleep20-21swapper/22
204002245178,53sleep30-21swapper/33
203682241184,25sleep10-21swapper/11
277621660,1sleep20-21swapper/22
3160721360,3sleep00-21swapper/00
1396621280,2sleep32080299cyclictest3
300672580,3sleep00-21swapper/00
23422510,2sleep10-21swapper/11
34242380,1sleep00-21swapper/00
253202380,3sleep125319-21basename1
192422340,1sleep20-21swapper/22
192422340,1sleep20-21swapper/22
280842320,1sleep30-21swapper/33
2078899291,17cyclictest9-21ksoftirqd/00
250192260,2sleep20-21swapper/22
145762260,2sleep30-21swapper/33
2079899257,4cyclictest28-21ksoftirqd/22
2079899255,18cyclictest505-21dbus-daemon2
2079899244,17cyclictest9193-21cat2
2079899244,17cyclictest7578-21cat2
2079899244,17cyclictest17331-21cat2
20798992410,4cyclictest30394-21grep2
2078899242,14cyclictest111rcu_preempt0
2079899235,4cyclictest28-21ksoftirqd/22
2079899234,17cyclictest2812-21cat2
2079899234,17cyclictest2812-21cat2
2079899234,17cyclictest1310-21cat2
2079899234,17cyclictest1310-21cat2
2079899231,4cyclictest28-21ksoftirqd/22
2079899231,3cyclictest19818-21munin-run2
20798992312,6cyclictest3716-21apt-get2
2079399239,2cyclictest67972unixbench_multi1
2079399230,21cyclictest12878-21kworker/1:11
323122220,1sleep30-21swapper/33
323122220,1sleep30-21swapper/33
2079899222,18cyclictest25257-21cat2
20798992215,5cyclictest15693-21seq2
20798992214,5cyclictest10333-21gdbus2
2079899221,3cyclictest11436-21users2
20798992210,3cyclictest28-21ksoftirqd/22
20793992215,4cyclictest32575-21diskstats1
20788992217,3cyclictest6254-21ntpq0
20788992216,4cyclictest25172-21cron0
20788992215,4cyclictest13814-21/usr/sbin/munin0
20788992214,5cyclictest25283-21dump-pmu-power0
20788992214,4cyclictest27200-21cron0
20802992115,4cyclictest18641-21sed3
20802992115,4cyclictest18641-21sed3
20802992115,4cyclictest10866-21rt-features3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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