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2022-05-28 - 15:04

x86 Intel Xeon E3-1220 @3100 MHz, Linux 4.19.8-rt6 (Profile)

Latency plot of system in rack #1, slot #0
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 20 highest latencies:
System rack1slot0.osadl.org (updated Sat May 28, 2022 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
789221000,0sleep17862-21sshd12:12:021
250762920,0sleep00-21swapper/011:59:400
239832910,0sleep10-21swapper/111:15:091
32012670,0sleep10-21swapper/112:31:061
181322660,1sleep018128-21sshd12:24:040
83482650,0sleep00-21swapper/011:49:540
85882630,0sleep20-21swapper/211:19:222
78862620,0sleep3391rcuc/311:13:473
240002620,0sleep20-21swapper/210:47:262
3016426138,7sleep00-21swapper/007:07:110
164192610,1sleep2321ktimersoftd/210:02:272
160322590,1sleep316033-21bash12:26:393
116442590,0sleep00-21swapper/012:12:220
3024825836,7sleep20-21swapper/207:08:092
169932580,0sleep20-21swapper/211:14:352
74342570,0sleep30-21swapper/309:53:233
3036025734,7sleep30-21swapper/307:09:233
244572570,0sleep00-21swapper/012:30:090
183322570,0sleep00-21swapper/011:09:070
220502560,1sleep222047-21sshd09:43:322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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