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2023-01-29 - 06:37

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 Sun Jan 29, 2023 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135992920,0sleep10-21swapper/123:16:561
320852900,0sleep00-21swapper/022:44:530
1226926123,19sleep10-21swapper/119:06:131
18652590,1sleep10-21swapper/123:41:071
315772580,1sleep231575-21bash21:15:022
56452570,0sleep30-21swapper/322:50:533
44792560,0sleep20-21swapper/200:19:222
1254225436,13sleep00-21swapper/019:09:340
59852530,0sleep20-21swapper/223:44:212
1254025331,18sleep30-21swapper/319:09:333
152152520,0sleep215214-21bash23:22:412
138422520,0sleep20-21swapper/222:40:272
108332520,0sleep20-21swapper/221:21:392
103652500,0sleep00-21swapper/000:04:450
8242490,0sleep10-21swapper/121:51:431
5352490,0sleep20-21swapper/223:52:142
225542490,0sleep00-21swapper/023:03:410
192282490,1sleep25647-21diskmemload21:33:412
56642480,0sleep20-21swapper/222:00:292
233542480,1sleep119-21rcuc/121:45:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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