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2021-01-27 - 07:52

Intel(R) Celeron(R) CPU G3900 @ 2.80GHz, Linux 5.4.59-rt36 (Profile)

Latency plot of system in rack #c, 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 50 highest latencies:
System rackcslot5.osadl.org (updated Wed Jan 27, 2021 00:43:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1106699220,21cyclictest18520-21meminfo22:20:110
1106799211,8cyclictest25610-21apt-get22:40:031
1106799200,14cyclictest5150-21kworker/u4:200:00:381
1106699200,6cyclictest0-21swapper/023:57:110
1106699200,19cyclictest381-21meminfo21:30:080
1106799190,18cyclictest26510-21meminfo19:50:101
1106699190,18cyclictest30918-21meminfo21:25:090
1106699190,18cyclictest11908-21meminfo23:30:080
1106799182,14cyclictest29308-21apt-get00:20:031
1106799180,17cyclictest25100-21meminfo21:10:081
1106699184,4cyclictest27315-21kworker/u4:023:21:290
1106699182,12cyclictest0-21swapper/000:20:040
1106699181,6cyclictest21566-21cat22:29:550
11066991815,2cyclictest24303-21diskmemload22:40:370
1106699180,17cyclictest22379-21meminfo22:30:110
1106799171,8cyclictest31239-21apt-get00:25:041
1106799171,7cyclictest13984-21apt-get22:10:051
11067991715,1cyclictest859-21kworker/u4:100:36:401
1106799170,16cyclictest32329-21meminfo20:05:141
1106799170,11cyclictest1130-21kworker/u4:322:15:531
1106699174,9cyclictest0-21swapper/000:25:030
1106699170,7cyclictest18631-21apt-get20:55:040
1106699170,7cyclictest0-21swapper/023:42:380
1106699170,7cyclictest0-21swapper/021:00:040
1106699170,6cyclictest24303-21diskmemload00:38:440
1106799167,7cyclictest1804-21sendmail-mta00:34:471
1106799167,6cyclictest13626-21apt-get19:15:031
1106799165,5cyclictest10111-21apt-get22:00:041
1106799164,7cyclictest23320-21apt-get19:40:031
1106799164,4cyclictest29476-21apt-get22:50:041
11067991616,0cyclictest0-21swapper/123:40:111
11067991616,0cyclictest0-21swapper/120:12:521
11067991614,2cyclictest1348-21gmain23:37:351
11067991614,1cyclictest1130-21kworker/u4:322:20:521
1106799160,15cyclictest17354-21meminfo20:50:101
1106699164,8cyclictest19951-21/usr/sbin/munin23:50:140
1106699164,5cyclictest24303-21diskmemload21:54:310
1106699162,13cyclictest8952-21/usr/sbin/munin20:30:170
1106699161,8cyclictest24303-21diskmemload21:36:260
1106699161,7cyclictest0-21swapper/023:15:040
1106699161,5cyclictest24303-21diskmemload23:03:250
11066991613,2cyclictest5095-21apt-get20:20:030
1106699160,9cyclictest0-21swapper/000:00:060
1106699160,7cyclictest0-21swapper/019:20:040
1106699160,15cyclictest12702-21meminfo22:05:080
1106699160,10cyclictest29337-21perf22:50:010
1106799157,4cyclictest15700-21kworker/u4:122:31:341
1106799153,8cyclictest27315-21kworker/u4:000:13:591
1106799151,6cyclictest26378-21apt-get21:15:031
1106799151,4cyclictest5440-21apt-get23:15:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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