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2021-07-29 - 03:58

Intel(R) Atom(TM) Processor E3950 @ 1.60GHz, Linux 5.6.19-rt12 (Profile)

Latency plot of system in rack #9, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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, lowest P state: performance
Characteristics of the 100 highest latencies:
System rack9slot2 (updated Thu Jul 29, 2021 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
278472314276,25sleep00-21swapper/00
278472314276,25sleep00-21swapper/00
277052262180,49sleep20-21swapper/22
277052262180,49sleep20-21swapper/22
280492234197,25sleep10-21swapper/11
280492234197,25sleep10-21swapper/11
278952233196,24sleep30-21swapper/33
278952233196,24sleep30-21swapper/33
520821590,2sleep00-21swapper/00
231912480,3sleep30-21swapper/33
2829299466,28cyclictest14411-21taskset0
2829299450,34cyclictest0-21swapper/00
2829299450,34cyclictest0-21swapper/00
32352430,1sleep30-21swapper/33
2829299401,3cyclictest4323-21perf0
2829299371,4cyclictest23927-21taskset0
2829299348,24cyclictest21622-21unixbench-2d0
28292993413,19cyclictest32233-21cat0
2829299340,3cyclictest21285-21df_inode0
90242330,1sleep30-21swapper/33
28300993314,4cyclictest28-21ksoftirqd/22
28292993312,19cyclictest19097-21cat0
28292993312,18cyclictest23158-21cut0
28292993311,20cyclictest2196-21sed0
28292993310,20cyclictest31034-21cat0
2829299330,3cyclictest639-21snmpd0
28300993227,3cyclictest271rcuc/22
28292993210,19cyclictest18421-21cut0
28300993111,2cyclictest111rcu_preempt2
2829299319,19cyclictest27950-21wc0
2829299312,26cyclictest24116-21/usr/sbin/munin0
28292993111,17cyclictest16284-21if_enp2s00
28292993110,18cyclictest21879-21cpuspeed_turbos0
28292993110,18cyclictest21879-21cpuspeed_turbos0
2829299310,3cyclictest26193-21users0
2829299310,3cyclictest1328-21memory0
2829299310,2cyclictest639-21snmpd0
2829299310,2cyclictest12721-21ps0
2829299309,18cyclictest857-21idleruntime0
2829299306,22cyclictest10067-21cpuspeed_turbos0
2829299300,3cyclictest31574-21missed_timers0
2829299300,3cyclictest30854-21tail0
2829299300,2cyclictest24041-21df0
2829299300,2cyclictest19213-21taskset0
2829299300,2cyclictest12663-21gltestperf0
165792300,10sleep228-21ksoftirqd/22
2830099299,4cyclictest28-21ksoftirqd/22
2829299298,19cyclictest6811-21ls0
2829299298,18cyclictest27373-21unixbench_multi0
2829299291,25cyclictest10234-21munin-run0
2829299290,3cyclictest27904-21cstates0
2829299290,27cyclictest4420-21sed0
28300992812,14cyclictest28-21ksoftirqd/22
2829299289,17cyclictest16687-21gltestperf0
2829299288,18cyclictest6305-21head0
2829299288,18cyclictest6271-21unixbench-2d0
2829299288,18cyclictest16614-21sort0
2829299287,19cyclictest639-21snmpd0
2829299287,18cyclictest6259-21taskset0
2829299285,20cyclictest8075-21gunzip0
2829299284,22cyclictest18662-21gltestperf0
2829299284,22cyclictest18662-21gltestperf0
2829299284,21cyclictest8347-21cat0
181332280,4sleep22830099cyclictest2
2830099279,16cyclictest28-21ksoftirqd/22
28300992718,3cyclictest28-21ksoftirqd/22
2830099270,3cyclictest28-21ksoftirqd/22
2829299279,16cyclictest24696-21latency_hist0
2829299278,16cyclictest8571-21cstates0
2829299278,16cyclictest0-21swapper/00
2829299277,18cyclictest639-21snmpd0
2829299277,18cyclictest30180-21latency_hist0
2829299277,17cyclictest20142-21/usr/sbin/munin0
2829299276,18cyclictest0-21swapper/00
2829299275,20cyclictest2455-21cat0
2829299275,19cyclictest28310-21tr0
2829299275,19cyclictest26741-21timerandwakeup0
2829299275,19cyclictest12400-21latency_hist0
2829299273,21cyclictest10505-21grep0
2829299271,4cyclictest13739-21sed0
2829299270,2cyclictest4260-21latency_hist0
2829299270,2cyclictest31554-21/usr/sbin/munin0
2830499268,3cyclictest117182memory3
28300992621,3cyclictest271rcuc/22
2829299266,18cyclictest4280-21grep0
2829299264,5cyclictest16313-21grep0
2829299264,20cyclictest9508-21sed0
2829299264,19cyclictest14559-21grep0
2829299263,4cyclictest14545-21aten2_r9power_v0
2829299261,3cyclictest26788-21diskstats0
2830099259,7cyclictest28-21ksoftirqd/22
28300992511,12cyclictest10232-21latency_hist2
2829299251,3cyclictest17976-21/usr/sbin/munin0
2829299250,1cyclictest0-21swapper/00
2830099249,13cyclictest28-21ksoftirqd/22
2830099242,12cyclictest28285-21cyclictest2
28300992412,2cyclictest111rcu_preempt2
2830099238,4cyclictest28-21ksoftirqd/22
28300992317,4cyclictest28-21ksoftirqd/22
28300992314,2cyclictest28-21ksoftirqd/22
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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