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2021-06-20 - 03:21

Intel(R) Xeon(R) CPU E31220L @ 2.20GHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #5, 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 rack5slot0.osadl.org (updated Sun Jun 20, 2021 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2876021410,1sleep028752-21sshd21:59:540
2876021410,1sleep028752-21sshd21:59:530
2695229632,60sleep30-21swapper/319:06:423
118512950,1sleep00-21swapper/022:36:050
203912910,0sleep00-21swapper/000:35:490
77032900,3sleep10-21swapper/100:38:591
253772850,1sleep30-21swapper/323:12:303
305272840,1sleep041ktimersoftd/023:03:280
220462840,2sleep10-21swapper/122:37:411
46202830,2sleep10-21swapper/123:04:311
2719728333,47sleep10-21swapper/119:09:441
140362810,1sleep00-21swapper/022:41:170
57202800,2sleep30-21swapper/300:23:513
145372790,2sleep30-21swapper/323:45:243
234412770,2sleep31876-21nfsd21:49:223
306992760,1sleep11873-21nfsd21:40:401
49992740,2sleep10-21swapper/100:28:401
26722740,0sleep00-21swapper/023:09:050
148282740,2sleep20-21swapper/200:25:142
101042740,1sleep02121-21runrttasks19:40:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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