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2021-10-16 - 13:28

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 Sat Oct 16, 2021 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
237952307272,22sleep30-21swapper/33
237132262205,44sleep10-21swapper/11
234732259188,24sleep00-21swapper/00
236642229192,24sleep20-21swapper/22
77112430,1sleep20-21swapper/22
23542430,1sleep10-21swapper/11
22872430,2sleep00-21swapper/00
14832370,1sleep00-21swapper/00
163412340,1sleep00-21swapper/00
23974993014,14cyclictest28-21ksoftirqd/22
2397499296,15cyclictest28-21ksoftirqd/22
2397499296,15cyclictest28-21ksoftirqd/22
23974992815,3cyclictest28-21ksoftirqd/22
23974992813,3cyclictest28-21ksoftirqd/22
23974992710,15cyclictest7854-21cron2
2397499270,9cyclictest28-21ksoftirqd/22
23974992616,3cyclictest28-21ksoftirqd/22
23974992616,3cyclictest28-21ksoftirqd/22
23974992616,3cyclictest28-21ksoftirqd/22
23974992522,2cyclictest292-21jbd2/mmcblk0p2-2
23974992510,14cyclictest28-21ksoftirqd/22
175052250,3sleep3341rcuc/33
2397499248,7cyclictest28-21ksoftirqd/22
2397499248,4cyclictest28-21ksoftirqd/22
23974992410,7cyclictest28-21ksoftirqd/22
2397499235,9cyclictest28-21ksoftirqd/22
23974992317,4cyclictest6496-21cut2
23974992317,4cyclictest28-21ksoftirqd/22
2397499231,4cyclictest30857-21munin-run2
2397499231,19cyclictest9740-21diskstats2
23974992311,7cyclictest111rcu_preempt2
23974992310,3cyclictest28-21ksoftirqd/22
23974992310,3cyclictest28-21ksoftirqd/22
2396399233,2cyclictest111rcu_preempt0
2396399232,11cyclictest9-21ksoftirqd/00
23963992312,3cyclictest9-21ksoftirqd/00
2396399231,10cyclictest0-21swapper/00
23978992216,4cyclictest31751-21cut3
23978992216,4cyclictest26894-21sh3
2397499229,3cyclictest111rcu_preempt2
2397499229,3cyclictest111rcu_preempt2
2397499229,11cyclictest28-21ksoftirqd/22
2397499228,3cyclictest28-21ksoftirqd/22
2397499228,3cyclictest111rcu_preempt2
2397499228,2cyclictest111rcu_preempt2
2397499223,17cyclictest20343-21cat2
23974992217,3cyclictest28-21ksoftirqd/22
23974992217,3cyclictest28-21ksoftirqd/22
23974992217,3cyclictest13881-21tr2
23974992215,4cyclictest597-21diskstats2
23974992215,3cyclictest31616-21munin-run2
23974992212,2cyclictest111rcu_preempt2
23974992211,3cyclictest111rcu_preempt2
23969992217,3cyclictest5606-21idleruntime-cro1
23969992216,4cyclictest15019-21sh1
2396399229,2cyclictest111rcu_preempt0
2396399228,2cyclictest111rcu_preempt0
2396399225,6cyclictest9-21ksoftirqd/00
2396399224,6cyclictest9-21ksoftirqd/00
2397899214,15cyclictest2395-21sendmail3
23978992116,3cyclictest14627-21tr3
23978992115,4cyclictest2760-21users3
23978992115,4cyclictest23952-21acpi3
23978992114,4cyclictest27529-21timerandwakeup3
23978992114,4cyclictest23696-21sh3
2397899211,17cyclictest32373-21munin-run3
2397499219,2cyclictest111rcu_preempt2
2397499218,3cyclictest111rcu_preempt2
2397499217,3cyclictest28-21ksoftirqd/22
2397499217,3cyclictest111rcu_preempt2
2397499217,12cyclictest3476-21taskset2
2397499216,3cyclictest111rcu_preempt2
2397499213,3cyclictest111rcu_preempt2
2397499212,3cyclictest111rcu_preempt2
2397499212,17cyclictest1250-21cat2
2397499212,17cyclictest10345-21sendmail-mta2
23974992117,2cyclictest271rcuc/22
23974992116,3cyclictest28-21ksoftirqd/22
23974992116,3cyclictest28-21ksoftirqd/22
23974992116,3cyclictest28-21ksoftirqd/22
23974992116,3cyclictest28-21ksoftirqd/22
23974992116,3cyclictest28-21ksoftirqd/22
23974992115,4cyclictest9233-21sed2
23974992114,4cyclictest322-21systemd-journal2
2397499211,3cyclictest322-21systemd-journal2
2397499211,3cyclictest30840-1kworker/2:2H2
2397499210,18cyclictest7100-21munin-run2
23969992116,3cyclictest31177-21basename1
23969992115,4cyclictest30658-21seq1
2396399215,8cyclictest111rcu_preempt0
2396399212,4cyclictest9-21ksoftirqd/00
23963992116,3cyclictest9-21ksoftirqd/00
23963992115,4cyclictest4929-21sed0
23963992112,2cyclictest9-21ksoftirqd/00
23963992112,2cyclictest9-21ksoftirqd/00
172842210,2sleep1201rcuc/11
2397899202,16cyclictest19744-21grep3
23978992015,3cyclictest3609-21proc_pri3
23978992015,3cyclictest13880-21if_err_enp2s03
23978992015,3cyclictest13323-21seq3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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