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2022-10-04 - 10:04

x86 Intel Core i3-2350M @2300 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of system in rack #6, slot #8
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 rack6slot8.osadl.org (updated Tue Oct 04, 2022 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3418991003994,7cyclictest6576-21kerneloops23:26:453
3418991003994,7cyclictest6576-21kerneloops23:26:453
3415991001989,10cyclictest6576-21kerneloops00:01:130
3416991000994,5cyclictest6576-21kerneloops22:54:481
341899999991,6cyclictest6576-21kerneloops20:50:343
341699999992,5cyclictest6576-21kerneloops19:59:311
341899998990,6cyclictest6576-21kerneloops21:53:353
341699998990,6cyclictest6576-21kerneloops22:15:311
341599998987,9cyclictest6576-21kerneloops00:34:260
341899997991,5cyclictest6576-21kerneloops22:45:383
341699997991,5cyclictest6576-21kerneloops00:07:311
341699997991,5cyclictest6576-21kerneloops00:01:221
341899996990,5cyclictest6576-21kerneloops23:37:193
341899996988,6cyclictest6576-21kerneloops22:19:203
341899995989,5cyclictest6576-21kerneloops22:38:483
341899995989,5cyclictest6576-21kerneloops20:25:403
341899995989,5cyclictest6576-21kerneloops20:25:403
341599995982,11cyclictest6576-21kerneloops23:24:150
341799994986,6cyclictest6576-21kerneloops20:56:312
341799994986,6cyclictest6576-21kerneloops20:24:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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