You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-03-17 - 00:07

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 Sun Mar 16, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3663147212571,21sleep20-21swapper/219:07:362
3663147212571,21sleep20-21swapper/219:07:352
3663009212071,21sleep30-21swapper/319:05:483
3663009212071,21sleep30-21swapper/319:05:473
3663211211872,39sleep00-21swapper/019:08:220
3663211211872,39sleep00-21swapper/019:08:220
3663114210955,23sleep10-21swapper/119:07:101
3663114210955,23sleep10-21swapper/119:07:091
366345399290,5cyclictest3711952-21smart_sda21:15:200
366346399260,25cyclictest0-21swapper/300:01:453
366345799260,25cyclictest0-21swapper/120:00:541
366345799260,25cyclictest0-21swapper/100:37:311
366345399260,25cyclictest0-21swapper/023:26:580
366345399260,25cyclictest0-21swapper/020:46:430
366345399260,25cyclictest0-21swapper/020:14:370
366345999250,25cyclictest0-21swapper/220:38:142
366345799250,25cyclictest0-21swapper/123:52:591
366346399241,15cyclictest0-21swapper/323:31:293
366346399241,15cyclictest0-21swapper/323:31:293
366346399240,23cyclictest0-21swapper/322:55:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional