You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-10-24 - 02:58

Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz, 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 Sun Oct 24, 2021 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1750899769762,5cyclictest6576-21kerneloops19:59:171
1750899768760,6cyclictest6576-21kerneloops00:34:221
1750899767760,5cyclictest6576-21kerneloops00:39:481
1750899767759,6cyclictest6576-21kerneloops22:29:171
1751099766759,5cyclictest6576-21kerneloops23:27:133
1751099766758,6cyclictest6576-21kerneloops23:45:573
1750899766759,5cyclictest6576-21kerneloops23:34:441
1750899766759,5cyclictest6576-21kerneloops19:53:011
1750899766758,6cyclictest6576-21kerneloops20:09:171
1751099765759,4cyclictest6576-21kerneloops00:08:583
1750999765757,6cyclictest6576-21kerneloops00:10:002
1750999765756,7cyclictest6576-21kerneloops21:54:262
1750899765758,5cyclictest6576-21kerneloops21:16:091
1750899765757,6cyclictest6576-21kerneloops22:17:481
1750799765756,3cyclictest6576-21kerneloops21:08:290
1750999764756,6cyclictest6576-21kerneloops23:40:322
1750799764757,1cyclictest6576-21kerneloops00:11:220
1750899763757,5cyclictest6576-21kerneloops21:21:331
1750899763757,5cyclictest6576-21kerneloops20:16:511
1750899763757,4cyclictest6576-21kerneloops22:44:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional