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2021-09-28 - 10:03

Intel(R) Celeron(R) CPU N3350 @ 1.10GHz, Linux 5.9.1-rt18 (Profile)

Latency plot of system in rack #c, slot #4
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 100 highest latencies:
System rackcslot4.osadl.org (updated Tue Sep 28, 2021 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22402261182,34sleep00-21swapper/019:05:530
23352255206,35sleep10-21swapper/119:06:311
977221650,3sleep0308899cyclictest20:35:280
48682960,4sleep0308899cyclictest00:05:270
131352390,2sleep0308899cyclictest20:45:150
308999272,5cyclictest8021-21apt-get19:20:151
308999271,20cyclictest9858-21apt-get23:05:171
3088992712,9cyclictest15148-21apt-get20:50:150
3089992616,6cyclictest17936-21apt-get22:10:151
308999261,12cyclictest10465-21apt-get00:20:141
3089992611,10cyclictest14798-21apt-get00:30:121
308899252,15cyclictest32245-40apt-check20:15:110
308999243,15cyclictest21089-21apt-get23:30:161
308999242,15cyclictest14551-21apt-esm-hook19:35:171
308999242,14cyclictest1761-21apt-get00:00:171
3089992417,4cyclictest30753-21apt-get21:25:171
3089992415,7cyclictest3179-21cat21:35:191
308899243,15cyclictest14535-21apt-get19:35:180
308899242,16cyclictest20104-21apt-get22:15:160
308899242,15cyclictest30200-21apt-get21:25:150
308999233,14cyclictest24478-21apt-esm-hook22:25:141
308999232,15cyclictest28213-21apt-get21:20:151
308999232,15cyclictest14558-21apt-get23:15:171
308999231,19cyclictest7653-40apt-check23:00:141
308899231,15cyclictest24462-21apt-get22:25:130
308999227,9cyclictest9234-21apt-get21:50:151
308999224,2cyclictest111rcu_preempt00:12:121
308999222,14cyclictest29789-21apt-get23:50:171
308999222,14cyclictest23249-21apt-esm-hook19:55:161
308999222,14cyclictest21702-21apt-esm-hook21:05:181
308999222,14cyclictest13595-21apt-get22:00:151
308999222,13cyclictest29786-21apt-esm-hook20:10:181
308999222,13cyclictest21085-21apt-esm-hook19:50:161
308999222,13cyclictest16739-21apt-esm-hook19:40:181
308999222,13cyclictest12634-21apt-get00:25:131
3089992214,6cyclictest3429-21cat22:50:191
308999221,14cyclictest11410-21apt-get21:55:191
308999220,19cyclictest32245-40apt-check20:15:081
308899222,15cyclictest10188-21apt-get19:25:130
308899222,14cyclictest9874-21apt-esm-hook23:05:170
308899222,14cyclictest7681-21apt-get23:00:160
308899222,14cyclictest2977-21apt-esm-hook22:50:150
308899222,14cyclictest21686-21apt-get21:05:180
308899222,13cyclictest4283-21apt-get20:25:160
308899221,14cyclictest12650-21apt-esm-hook00:25:140
308999216,10cyclictest26637-21apt-get22:30:161
308999212,14cyclictest12993-21apt-esm-hook20:45:131
308999212,13cyclictest745-21apt-get22:45:181
308999212,13cyclictest6474-21apt-esm-hook20:30:181
308999212,13cyclictest6474-21apt-esm-hook20:30:181
308999212,13cyclictest3673-21apt-esm-hook19:10:151
308999212,13cyclictest26044-21apt-esm-hook21:15:181
308999212,13cyclictest18911-21apt-esm-hook19:45:171
308999212,13cyclictest12033-21apt-get23:10:191
308999211,15cyclictest31961-21apt-get23:55:181
308999211,14cyclictest5138-21apt-get22:55:171
308999211,14cyclictest5138-21apt-get22:55:161
308999211,13cyclictest10830-21apt-esm-hook20:40:171
308999211,12cyclictest17339-21apt-esm-hook20:55:171
308999210,18cyclictest5008-21ntpq20:25:241
308899216,10cyclictest2110-21apt-get20:20:180
308899213,16cyclictest29749-21runrttasks21:22:140
308899212,4cyclictest29798-21apt-esm-json-ho20:10:180
308899212,13cyclictest769-21apt-esm-hook22:45:180
308899212,13cyclictest7073-21apt-esm-hook21:45:140
308899212,13cyclictest27597-21apt-get20:05:170
308899212,13cyclictest26028-21apt-get21:15:180
308899212,13cyclictest25469-21apt-esm-hook23:40:180
308899212,13cyclictest23233-21apt-get19:55:170
308899212,13cyclictest16723-21apt-get19:40:170
308899212,13cyclictest15784-21apt-esm-hook22:05:170
308899212,13cyclictest13611-21apt-esm-hook22:00:140
308899212,13cyclictest12365-21apt-get19:30:180
308899212,13cyclictest10814-21apt-get20:40:160
308899211,13cyclictest23858-21apt-get21:10:180
308999205,9cyclictest27621-21apt-get23:45:191
308999205,10cyclictest22299-21apt-get22:20:161
308999203,5cyclictest4895-21apt-get21:40:151
308999202,7cyclictest18918-21apt-get23:25:161
308999202,2cyclictest111rcu_preempt19:31:491
308999202,16cyclictest17230-21cat20:55:001
308999202,13cyclictest5849-21apt-esm-hook19:15:181
308999202,13cyclictest453-21apt-get21:30:141
308999202,13cyclictest25452-21apt-get23:40:191
308999202,13cyclictest23275-21apt-esm-hook23:35:161
308999202,13cyclictest20120-21apt-esm-hook22:15:161
308999202,12cyclictest8284-21apt-get00:15:181
308999202,12cyclictest3945-21apt-get00:05:181
308999202,12cyclictest28813-21apt-get22:35:171
308999201,14cyclictest31006-21apt-get22:40:181
308999201,13cyclictest16756-21apt-get23:20:211
308999200,3cyclictest18993-21lsb_release00:40:001
308999200,18cyclictest4108-21basename20:25:001
308899204,2cyclictest111rcu_preempt22:00:010
308899203,3cyclictest111rcu_preempt21:00:160
308899202,6cyclictest9-21ksoftirqd/019:21:050
308899202,13cyclictest8300-21apt-esm-hook00:15:180
308899202,13cyclictest3657-21apt-get19:10:150
308899202,13cyclictest2711-21apt-esm-hook21:35:140
308899202,13cyclictest26653-21apt-esm-hook22:30:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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