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2025-05-02 - 12:51
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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 100 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
2079899219,3cyclictest28-21ksoftirqd/22
2079899212,14cyclictest28158-21apt-get2
2079899212,14cyclictest28158-21apt-get2
20798992116,3cyclictest26339-21ntp_states2
20798992116,3cyclictest17452-21unixbench_singl2
20798992115,4cyclictest24276-21memory2
2079899211,3cyclictest17365-21latency_hist2
2079899211,2cyclictest13565-21munin-run2
2079899211,19cyclictest0-21swapper/22
2079899211,17cyclictest505-21dbus-daemon2
2079899211,17cyclictest13119-1kworker/2:2H2
20798992110,6cyclictest5408-21apt-get2
2079899210,4cyclictest1133-21munin-run2
2079899210,18cyclictest10212-21expr2
20793992115,4cyclictest15211-21seq1
20793992115,3cyclictest24512-21ntp_offset1
20793992114,5cyclictest12310-21awk1
20793992114,4cyclictest12043-21seq1
2079399210,19cyclictest9502-21kworker/1:01
20788992115,4cyclictest2786-21sed0
20788992115,4cyclictest2306-21sh0
20788992113,5cyclictest31450-21tail0
20788992113,5cyclictest1440-21idleruntime-cro0
2078899211,2cyclictest111rcu_preempt0
174172210,2sleep00-21swapper/00
247332200,2sleep30-21swapper/33
2080299209,8cyclictest1126-21cron3
20802992017,2cyclictest0-21swapper/33
20802992015,3cyclictest3772-21missed_timers3
20802992015,3cyclictest29242-21sed3
20802992015,3cyclictest16374-21missed_timers3
20802992015,3cyclictest13009-21timerwakeupswit3
20802992014,4cyclictest2761-21apt3
20802992014,4cyclictest2761-21apt3
20802992014,4cyclictest24873-21cat3
20802992014,4cyclictest23738-21seq3
20802992013,4cyclictest943-21grep3
20802992013,4cyclictest7975-21grep3
20802992013,4cyclictest505-21dbus-daemon3
2079899209,6cyclictest20072-21apt-get2
2079899208,7cyclictest26171-21apt-get2
2079899203,4cyclictest28-21ksoftirqd/22
2079899202,8cyclictest28-21ksoftirqd/22
2079899202,16cyclictest9289-21cat2
20798992016,2cyclictest2593-21ntp_states2
20798992015,3cyclictest7363-21cat2
20798992015,3cyclictest29711-21perf2
20798992015,3cyclictest24071-21diskstats2
20798992015,3cyclictest1763-21cpuspeed_turbos2
20798992015,3cyclictest14739-21pluginstate2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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