You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-02-06 - 14:35

x86 Intel Core i7-3632QM @2200 MHz, Linux 4.19.1-rt3 (Profile)

Latency plot of system in rack #6, slot #3
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 rack6slot3.osadl.org (updated Mon Feb 06, 2023 12:46:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2348627337,0sleep10-21swapper/107:06:101
2352827034,0sleep50-21swapper/507:06:465
2364526044,0sleep30-21swapper/307:08:293
2358525438,0sleep60-21swapper/607:07:366
2365625234,0sleep20-21swapper/207:08:352
2354525235,0sleep40-21swapper/407:07:014
2364225134,0sleep00-21swapper/007:08:260
2355725135,0sleep70-21swapper/707:07:127
2413799351,0cyclictest17296-21diskmemload10:46:316
2413799350,0cyclictest0-21swapper/607:30:156
2413799342,0cyclictest0-21swapper/612:36:106
2413799341,0cyclictest0-21swapper/612:22:536
2413799340,0cyclictest0-21swapper/611:16:436
711330,0ktimersoftd/70-21swapper/712:18:587
711330,0ktimersoftd/70-21swapper/712:12:287
711330,0ktimersoftd/70-21swapper/711:07:267
711330,0ktimersoftd/70-21swapper/710:46:317
711330,0ktimersoftd/70-21swapper/709:18:587
471330,0ktimersoftd/40-21swapper/408:45:214
391330,0ktimersoftd/325506-21memory12:10:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional