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2022-10-04 - 03:40

x86 Intel Core i3-2310E @2100 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of system in rack #8, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 2 SMIs that occured during the measurement.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 --smi -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack8slot2.osadl.org (updated Mon Oct 03, 2022 12:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2801999142133,8cyclictest31896-21strings07:21:551
2801999142133,8cyclictest31896-21strings07:21:551
3099321100,1sleep10-21swapper/111:00:131
2802199109105,2cyclictest0-21swapper/307:16:253
27669210945,30sleep10-21swapper/107:15:301
27717210744,31sleep20-21swapper/207:16:072
1067521070,1sleep20-21swapper/210:41:382
3251521010,0sleep30-21swapper/308:36:483
2373221000,0sleep20-21swapper/212:24:042
91272990,0sleep30-21swapper/312:10:463
2757929248,32sleep30-21swapper/307:14:193
2584929046,31sleep00-21swapper/007:11:350
28020996664,1cyclictest0-21swapper/207:16:252
28018995855,2cyclictest0-21swapper/007:16:250
28021995225,26cyclictest0-21swapper/308:06:333
6152380,0sleep00-21swapper/010:01:470
65022340,0sleep10-21swapper/109:36:431
184822310,1sleep3331rcuc/311:47:573
183272310,0sleep20-21swapper/211:47:442
323502290,2sleep132348-21ssh12:31:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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