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2023-06-01 - 11:34

x86 Intel Core i5-6440EQ @2700 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #5, slot #2
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack5slot2.osadl.org (updated Thu Jun 01, 2023 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
159442204168,12sleep00-21swapper/019:05:090
181482202186,11sleep10-21swapper/119:09:521
159472196181,11sleep30-21swapper/319:05:123
159412185168,12sleep20-21swapper/219:05:072
143892490,0sleep10-21swapper/123:23:281
8632470,0sleep30-21swapper/323:15:263
96732100,0sleep10-21swapper/122:23:241
160152100,0sleep20-21swapper/200:21:462
183399980,4cyclictest21940-21perf22:50:000
183399973,4cyclictest20309-21munin-run22:30:010
183399971,5cyclictest0-21swapper/023:55:180
2205260,0sleep20-21swapper/219:40:192
183529950,5cyclictest0-21swapper/322:30:073
183529950,5cyclictest0-21swapper/321:52:343
183529950,5cyclictest0-21swapper/321:11:593
183499951,2cyclictest0-21swapper/219:55:192
183499950,5cyclictest1249-21perf20:44:592
183499950,5cyclictest0-21swapper/222:43:172
183499950,4cyclictest17971-21apt-get23:45:012
183499950,0cyclictest0-21swapper/223:03:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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