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2024-04-27 - 11:12
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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 Sat Apr 27, 2024 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41532312276,24sleep20-21swapper/22
41022311274,25sleep10-21swapper/11
40062285248,24sleep30-21swapper/33
431199271255,12cyclictest8832-21munin-run2
39622263202,47sleep00-21swapper/00
430199260251,5cyclictest8881-21sendmail-msp0
430699250242,6cyclictest8855-21perf1
431699195183,9cyclictest8882-21awk3
159762530,2sleep10-21swapper/11
54252380,1sleep00-21swapper/00
4316992822,3cyclictest2399-21/usr/sbin/munin3
4316992822,3cyclictest2399-21/usr/sbin/munin3
431199277,18cyclictest27815-21turbostat2
431199269,15cyclictest5408-21sendmail-mta2
4311992411,10cyclictest15726-21latency_hist2
430699240,5cyclictest1-21systemd1
431199233,18cyclictest13706-21cat2
4311992316,4cyclictest9392-21sh2
431199231,4cyclictest10333-21gdbus2
431199231,19cyclictest13715-21munin-run2
431199231,19cyclictest11360-21munin-run2
4316992216,4cyclictest30465-21tail3
431699221,19cyclictest3883-21cut3
431199223,17cyclictest15535-21cat2
4311992216,4cyclictest9275-21sendmail2
4311992216,4cyclictest7242-21seq2
431199221,5cyclictest21829-21sendmail-mta2
4311992214,5cyclictest505-21dbus-daemon2
431199221,3cyclictest2082-21systemd-journal2
431199221,3cyclictest15171-1kworker/2:1H2
431199221,19cyclictest29452-21http2
4311992210,11cyclictest28-21ksoftirqd/22
431199220,5cyclictest23755-21idleruntime-cro2
430699222,17cyclictest1257-21awk1
4301992216,3cyclictest2082-21systemd-journal0
4316992116,3cyclictest22381-21seq3
4316992115,4cyclictest341-21ntp_states3
4316992115,4cyclictest27638-21apt3
4316992115,4cyclictest16302-21diskstats3
4316992115,4cyclictest15994-21http3
4316992115,4cyclictest1345-21munin-run3
4316992115,3cyclictest2680-21swap3
4316992114,5cyclictest31969-21date3
431699210,20cyclictest12886-21kworker/3:13
4311992116,3cyclictest9614-21dpkg2
4311992116,3cyclictest4543-21aten2_r9power_e2
4311992116,3cyclictest18323-21cut2
4311992116,3cyclictest11424-21apt2
4311992116,2cyclictest16657-21if_err_enp3s02
4311992115,4cyclictest5283-21sendmail2
4311992115,4cyclictest19276-21seq2
431199211,4cyclictest10333-21gdbus2
431199211,3cyclictest7330-21munin-run2
431199211,3cyclictest13747-1kworker/2:0H2
4311992113,5cyclictest505-21dbus-daemon2
431199211,18cyclictest28006-21apt-get2
431199211,18cyclictest0-21swapper/22
431199211,17cyclictest23631-21munin-run2
431199210,4cyclictest21621-21cron2
430699215,3cyclictest111rcu_preempt1
4306992116,3cyclictest4581-21switchtime1
4306992115,4cyclictest6943-21seq1
4306992115,4cyclictest20033-21/usr/sbin/munin1
4306992115,3cyclictest32504-21if_enp3s01
4306992114,4cyclictest17142-21seq1
4306992114,4cyclictest15442-21seq1
430199219,9cyclictest0-21swapper/00
4301992116,3cyclictest6414-21ntp_states0
4301992116,3cyclictest30803-21ntpq0
4301992115,4cyclictest505-21dbus-daemon0
216392210,4sleep021622-21cron0
4316992015,3cyclictest8522-21ntp_states3
4316992015,3cyclictest6238-21turbostat.cron3
4316992015,3cyclictest5693-21cpuspeed3
4316992015,3cyclictest5627-21find3
4316992015,3cyclictest35-21ksoftirqd/33
4316992015,3cyclictest27103-21swap3
4316992015,3cyclictest23994-21apt-get3
4316992015,3cyclictest22820-21timerwakeupswit3
4316992015,3cyclictest18982-21switchtime3
4316992015,3cyclictest16973-21pmu-power3
4316992014,4cyclictest8327-21cat3
4316992014,4cyclictest22690-21needreboot3
4316992014,4cyclictest12877-21grep3
4316992014,4cyclictest12671-21cat3
4316992013,4cyclictest20659-21wc3
4311992016,3cyclictest17664-21sendmail-msp2
4311992016,2cyclictest30248-21cpuspeed_turbos2
4311992016,2cyclictest23378-21munin-run2
4311992015,3cyclictest5259-21sh2
4311992015,3cyclictest2603-21switchtime2
4311992015,3cyclictest19675-21aten2_r9power_e2
4311992015,3cyclictest14988-21users2
4311992015,3cyclictest0-21swapper/22
4311992014,4cyclictest31571-21seq2
4311992014,4cyclictest24500-21ntpq2
4311992014,4cyclictest24500-21ntpq2
4311992014,3cyclictest7270-21idleruntime-cro2
4311992014,3cyclictest2131-21sed2
431199201,3cyclictest15171-1kworker/2:1H2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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