You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2022-12-04 - 21:56

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #c, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  

x86 Intel Celeron 33455 @1500 MHz, Linux 5.15.2-rt19 (Profile)

Latency plot of shadow in rack #c, slot #7
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 rackcslot7s.osadl.org (updated Sun Dec 04, 2022 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2621744210562,36sleep20-21swapper/207:06:102
262167429558,31sleep10-21swapper/107:05:281
162399890,9rtkit-daemon1622-21rtkit-daemon09:30:263
262174028866,15sleep30-21swapper/307:06:073
262175728263,13sleep00-21swapper/007:06:200
26774992780,4sleep20-21swapper/209:45:252
162399600,9rtkit-daemon1622-21rtkit-daemon09:43:212
162399570,9rtkit-daemon1622-21rtkit-daemon09:02:213
2622184995622,8cyclictest26-21ksoftirqd/111:55:421
2622194995310,22cyclictest2728819-21cron12:14:593
262218999528,20cyclictest34-21ksoftirqd/211:25:022
2622189995212,19cyclictest34-21ksoftirqd/209:05:242
26365542510,5chrt0-21swapper/307:49:593
26324392510,6sleep0161rcuc/007:35:290
27081842500,5chrt0-21swapper/311:15:023
27081842500,5chrt0-21swapper/311:15:023
26790962500,18chrt13-21ksoftirqd/009:50:230
262219499507,9cyclictest42-21ksoftirqd/308:10:003
262218999500,45cyclictest1622-21rtkit-daemon09:30:262
262218499501,18cyclictest2697276-21systemd-udevd10:42:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional