You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2024-11-23 - 17:17

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 #0, 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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot7s.osadl.org (updated Mon Aug 26, 2024 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1549965211972,19sleep00-21swapper/019:09:300
1549968210976,25sleep20-21swapper/219:09:322
1549632210577,21sleep10-21swapper/119:06:381
1550007210374,22sleep30-21swapper/319:09:533
155018999398,28cyclictest0-21swapper/322:11:523
136699300,2ntpd1604137-21ntpq21:10:170
136699250,3ntpd1580120-21ntpq20:15:162
155018999233,19cyclictest0-21swapper/321:00:083
155018999229,4cyclictest0-21swapper/320:07:513
155018999229,4cyclictest0-21swapper/319:36:473
155018999220,16cyclictest0-21swapper/322:05:143
15823342200,1sleep20-21swapper/220:20:152
1550180991918,1cyclictest0-21swapper/023:05:150
155018099190,1cyclictest0-21swapper/023:53:040
155018099190,19cyclictest0-21swapper/020:23:090
136699180,1ntpd0-21swapper/220:05:172
1550189991712,1cyclictest0-21swapper/323:20:203
155018999170,3cyclictest0-21swapper/321:14:563
155018999170,14cyclictest0-21swapper/321:05:183
1550186991716,1cyclictest0-21swapper/221:58:062
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional