You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2025-12-16 - 13:18

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 #3

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 rack0slot3s.osadl.org (updated Tue Dec 16, 2025 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15672412282273,6sleep60-21swapper/619:08:186
15671562273265,5sleep70-21swapper/719:07:467
15669532262218,35sleep10-21swapper/119:06:351
15671192260235,16sleep30-21swapper/319:07:343
15671782252206,17sleep00-21swapper/019:07:550
15668472252223,19sleep40-21swapper/419:05:584
15668202252227,16sleep20-21swapper/219:05:482
15674292244218,17sleep50-21swapper/519:09:225
1567864993217,2cyclictest0-21swapper/622:53:206
1567837993130,1cyclictest0-21swapper/022:40:170
156784699290,27cyclictest0-21swapper/222:15:212
156784699290,27cyclictest0-21swapper/222:15:202
1567864992824,2cyclictest1685798-21ntpq22:10:236
1567864992824,2cyclictest0-21swapper/622:40:176
1567859992827,1cyclictest0-21swapper/519:15:165
1567864992723,3cyclictest1759008-21fschecks_time00:05:156
1567864992723,2cyclictest0-21swapper/620:39:596
1567855992726,1cyclictest0-21swapper/422:40:174
1567855992726,1cyclictest0-21swapper/420:40:004
1567846992727,0cyclictest1501712-21kworker/2:2+display_unordered19:15:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional