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2022-05-25 - 17:28

x86 Intel Xeon E3-1220L V2 @2300 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #a, 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 rackaslot0.osadl.org (updated Fri May 20, 2022 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1756821090,0sleep017554-21sshd23:10:210
125342880,0sleep212535-21sshd22:51:142
275952630,1sleep00-21swapper/021:22:090
111682590,1sleep30-21swapper/323:34:483
234192580,1sleep123414-21sshd23:45:201
254952570,13sleep339-21ksoftirqd/321:25:093
192802560,1sleep31621-21sshd21:36:593
106732560,1sleep21776-21runrttasks00:23:432
207552540,0sleep00-21swapper/021:15:160
453725341,8sleep10-21swapper/119:09:151
157352530,0sleep10-21swapper/123:13:241
443925129,18sleep20-21swapper/219:07:592
355125121,14sleep30-21swapper/319:05:193
225872510,0sleep00-21swapper/000:04:380
77982500,0sleep30-21swapper/323:21:583
219982500,0sleep321999-21bash21:21:373
237902490,1sleep129951-21diskmemload22:36:411
228122490,0sleep322811-21sshd22:17:573
141032490,0sleep00-21swapper/022:01:270
129052490,0sleep00-21swapper/000:17:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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