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2022-05-28 - 16:48

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 Sat May 28, 2022 12:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1229799999992,5cyclictest6576-21kerneloops11:42:091
1229799999991,6cyclictest6576-21kerneloops10:36:471
1229999997990,5cyclictest6576-21kerneloops09:52:143
1229899997987,8cyclictest6576-21kerneloops10:21:192
1229799997990,5cyclictest6576-21kerneloops07:41:161
1229799997989,6cyclictest6576-21kerneloops11:12:281
1229999996989,5cyclictest6576-21kerneloops10:40:353
1229999995989,5cyclictest6576-21kerneloops10:24:463
1229799995989,5cyclictest6576-21kerneloops10:26:441
1229699995983,10cyclictest6576-21kerneloops09:47:170
1229999994988,5cyclictest6576-21kerneloops08:15:543
1229899994987,5cyclictest6576-21kerneloops12:27:462
1229999993987,5cyclictest6576-21kerneloops07:25:223
1229999993985,6cyclictest6576-21kerneloops11:45:533
1229799993986,5cyclictest6576-21kerneloops10:34:071
1229799993986,5cyclictest6576-21kerneloops07:10:461
1229999992985,5cyclictest6576-21kerneloops11:29:063
1229999992985,5cyclictest6576-21kerneloops08:27:083
1229899992985,5cyclictest6576-21kerneloops11:00:342
1229899992982,8cyclictest6576-21kerneloops09:27:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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