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2022-12-01 - 10:31

x86 Intel Core i7-3770K @3500 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #0, slot #5
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack0slot5.osadl.org (updated Thu Dec 01, 2022 00:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13013772359353,3sleep140-21swapper/1419:08:166
13012222357339,10sleep80-21swapper/819:06:1814
12993322350343,3sleep60-21swapper/619:03:3512
13013712339322,9sleep100-21swapper/1019:08:122
13011172339320,10sleep150-21swapper/1519:04:487
13011142335317,10sleep120-21swapper/1219:04:454
13010542333313,11sleep70-21swapper/719:03:5213
13012722332313,11sleep130-21swapper/1319:06:555
13010692330323,4sleep40-21swapper/419:04:0510
13011952328310,10sleep30-21swapper/319:05:569
13012782326307,10sleep20-21swapper/219:07:008
13012012326307,11sleep90-21swapper/919:06:0215
13012382324305,11sleep50-21swapper/519:06:3111
13013342323305,10sleep10-21swapper/119:07:471
13011672322302,10sleep110-21swapper/1119:05:323
13011022321303,10sleep00-21swapper/019:04:330
1301717993111,20cyclictest0-21swapper/1300:17:095
1301713992717,0cyclictest1386757-21diskmemload22:01:154
1301713992716,11cyclictest0-21swapper/1223:07:094
139099260,0ntpd0-21swapper/923:11:3315
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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