You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-03-31 - 04:38

x86 Intel Core i9-9900K @3600 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #0, slot #4
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack0slot4.osadl.org (updated Fri Mar 31, 2023 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24047862343336,4sleep50-21swapper/519:07:2411
24046532341329,6sleep140-21swapper/1419:05:566
24048392340320,11sleep150-21swapper/1519:08:067
24046472339320,10sleep80-21swapper/819:05:5014
24047932337318,11sleep60-21swapper/619:07:2412
24049692336317,10sleep70-21swapper/719:09:5013
24049632336318,10sleep20-21swapper/219:09:458
24048692336317,10sleep40-21swapper/419:08:2810
24046392336315,11sleep10-21swapper/119:05:431
24047982335315,11sleep110-21swapper/1119:07:303
24046732335317,10sleep90-21swapper/919:06:0715
24046992333315,10sleep100-21swapper/1019:06:242
24049052332313,10sleep30-21swapper/319:08:589
24048592332314,10sleep00-21swapper/019:08:230
24013712331311,11sleep120-21swapper/1219:05:074
24048002330312,10sleep130-21swapper/1319:07:315
2405418994610,25cyclictest2580793-21memory22:45:197
240541899350,35cyclictest0-21swapper/1520:44:317
240541899306,11cyclictest0-21swapper/1523:29:157
240541899306,11cyclictest0-21swapper/1521:39:267
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional