You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2024-04-14 - 19:34

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 #9, slot #4

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 rack9slot4s (updated Sun Apr 14, 2024 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268439912551208,41cyclictest28716-21latency_hist07:30:001
267742606560,31sleep00-21swapper/007:24:520
264902596551,30sleep10-21swapper/107:21:541
2684299192183,5cyclictest28849-21munin-node07:30:000
1445521230,8sleep02684299cyclictest08:15:110
71332820,4sleep02684299cyclictest07:55:220
165132590,8sleep10-21swapper/109:45:291
11072400,2sleep01109-21aten_r4power_cu07:40:090
7742390,3sleep1773-21aten_r4power_en09:05:101
7742390,3sleep1773-21aten_r4power_en09:05:091
267012380,4sleep02684299cyclictest08:45:450
2684299371,23cyclictest9433-21python09:25:510
203592351,30sleep120362-21memory09:55:351
203592351,30sleep120362-21memory09:55:341
26842993425,6cyclictest0-21swapper/011:09:360
59792331,9sleep00-21swapper/009:16:310
2684299324,4cyclictest81rcu_preempt10:52:370
2684299321,28cyclictest924-21turbostat.cron07:39:590
301142311,26sleep130122-21iostat_ios07:30:201
2684299312,13cyclictest20607-21iostat_ios08:30:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional