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2023-12-06 - 06:18
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack9slot2 (updated Wed Dec 06, 2023 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
177392303280,12sleep20-21swapper/22
186552284205,43sleep10-21swapper/11
1900499257250,4cyclictest20955-21munin-node2
185982248175,25sleep00-21swapper/00
1899599245240,3cyclictest0-21swapper/00
187472242178,51sleep30-21swapper/33
3116721770,3sleep01899599cyclictest0
1900799144139,3cyclictest0-21swapper/33
1900099138130,5cyclictest21021-21cat1
40112570,2sleep10-21swapper/11
284022460,1sleep10-21swapper/11
44242400,1sleep10-21swapper/11
22472390,1sleep32253-21grep3
1900499311,27cyclictest17583-21ls2
227462300,2sleep00-21swapper/00
19004992820,5cyclictest2082-21systemd-journal2
19007992610,5cyclictest35-21ksoftirqd/33
79642240,2sleep10-21swapper/11
1900499244,18cyclictest23553-21cat2
1900499241,20cyclictest11326-21sh2
85382230,1sleep20-21swapper/22
241302230,1sleep00-21swapper/00
1900499231,4cyclictest16408-21df2
1900499231,4cyclictest16408-21df2
1900499231,19cyclictest9377-21munin-run2
1900499231,19cyclictest19302-21munin-run2
1900499231,19cyclictest17295-21munin-run2
1900499231,19cyclictest0-21swapper/22
18995992313,6cyclictest665-21runrttasks0
19004992216,4cyclictest15073-21seq2
1900499221,4cyclictest15307-1kworker/2:2H2
1900499221,3cyclictest7350-21munin-run2
1900499221,3cyclictest14786-1kworker/2:2H2
1900499221,19cyclictest10333-21gdbus2
19000992214,5cyclictest12309-21grep1
185492220,2sleep20-21swapper/22
59752210,1sleep00-21swapper/00
19007992116,3cyclictest31942-21cpuspeed_turbos3
19007992115,4cyclictest6000-21forks3
19007992115,4cyclictest10664-21sed3
19007992115,3cyclictest7630-21aten2_r9power_e3
1900499215,14cyclictest10333-21gdbus2
1900499212,18cyclictest13289-21awk2
19004992116,3cyclictest3795-21cpuspeed_turbos2
19004992116,3cyclictest29734-21munin-run2
1900499211,4cyclictest15318-21cron2
19004992114,4cyclictest505-21dbus-daemon2
19004992114,4cyclictest24724-21which2
1900499211,3cyclictest24205-1kworker/2:0H2
1900499211,18cyclictest505-21dbus-daemon2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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