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2021-07-26 - 17:55

Intel(R) Core(TM) i5-7300U CPU @ 2.60GHz, Linux 5.0.21-rt16 (Profile)

Latency plot of system in rack #1, slot #1
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 rack1slot1.osadl.org (updated Mon Jul 26, 2021 12:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
44032211149,22sleep30-21swapper/307:06:363
44582204152,21sleep00-21swapper/007:07:180
45322203161,27sleep20-21swapper/207:08:152
45902201165,24sleep10-21swapper/107:08:591
43382660,0sleep10-21swapper/110:05:201
305882620,0sleep20-21swapper/210:40:222
325532250,0sleep00-21swapper/012:07:440
477999181,2cyclictest0-21swapper/108:05:171
478399170,16cyclictest0-21swapper/212:21:172
253792170,1sleep09-21ksoftirqd/007:54:550
478399150,14cyclictest27019-21diskmemload10:10:272
478399140,13cyclictest9237-21apt08:30:162
478399140,13cyclictest27019-21diskmemload09:30:192
478399140,13cyclictest26257-21unixbench_multi11:15:272
478399140,13cyclictest17262-21timerwakeupswit08:45:282
478399140,13cyclictest1715-21apt-get10:45:172
478399140,13cyclictest13443-21apt-get11:00:172
478399140,13cyclictest0-21swapper/211:44:522
478399131,11cyclictest6896-21awk09:25:252
478399130,13cyclictest0-21swapper/209:14:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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