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2023-06-03 - 06:15

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 Sat Jun 03, 2023 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
189072920,1sleep318900-21sshd23:02:353
142772870,0sleep30-21swapper/322:05:393
169362840,0sleep10-21swapper/123:08:181
89632800,0sleep00-21swapper/021:32:400
62532790,0sleep10-21swapper/121:32:241
255052650,0sleep128121-21cyclictest00:29:411
281242630,1sleep028122-21sshd23:41:460
318492610,0sleep20-21swapper/222:13:152
314392610,0sleep10-21swapper/121:25:431
162212590,1sleep00-21swapper/000:32:010
46222570,1sleep24590-21sshd23:21:532
216142570,2sleep119-21rcuc/123:47:031
147302560,1sleep114701-21sshd22:47:231
45712540,0sleep30-21swapper/322:01:463
138682540,1sleep313864-21bash00:25:043
51052530,0sleep00-21swapper/021:58:550
51052530,0sleep00-21swapper/021:58:550
2776525331,18sleep20-21swapper/219:08:282
2767525329,19sleep00-21swapper/019:07:210
2776625226,9sleep30-21swapper/319:08:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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