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2023-01-29 - 07:03

x86 VIA QuadCore L4700 @1200 MHz, Linux 3.18.43-rt46 (Profile)

Latency plot of system in rack #b, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackbslot4.osadl.org (updated Sun Jan 29, 2023 00:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1398321470,7sleep11696299cyclictest22:29:291
1695899592,7cyclictest9495-21sensors_temp22:14:590
1697999574,20cyclictest0-21swapper/319:09:553
1697999573,49cyclictest0-21swapper/321:57:573
16958995718,33cyclictest1349-21sadc20:29:310
1664425711,15sleep10-21swapper/118:18:391
16958995620,31cyclictest20142-21grep18:25:010
16958995614,35cyclictest9281-21unixbench_multi23:40:130
16958995520,29cyclictest23340-21missed_timers19:59:580
16958995518,30cyclictest27727-21tune2fs23:04:470
16958995515,33cyclictest31651-21switchtime18:55:090
1697999546,41cyclictest0-21swapper/322:34:553
1697999545,42cyclictest0-21swapper/319:40:053
1697999543,45cyclictest17074-21/usr/sbin/munin19:44:543
1697999543,44cyclictest0-21swapper/318:51:373
1697199543,45cyclictest0-21swapper/218:59:522
16958995418,30cyclictest649-21runrttasks22:19:450
16958995413,35cyclictest26391-21switchtime23:00:010
16958995413,34cyclictest24408-21proc_pri22:55:030
1697999534,43cyclictest0-21swapper/323:28:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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