You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-07-12 - 12:53

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 #f, 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
  
Click here to display the system's profile data.
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.

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 rackfslot7s.osadl.org (updated Sat Jul 12, 2025 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20377919931195,3110cyclictest2053589-21kworker/0:0+events20:40:000
203779999296113,2943cyclictest2048962-21kworker/2:1+events20:10:182
203779999296113,2943cyclictest2048962-21kworker/2:1+events20:10:172
203779599284913,2832cyclictest2050651-21kworker/1:2+events20:05:191
203780199278013,2764cyclictest2140184-21kworker/3:1+events00:35:183
203779599277813,2761cyclictest2052284-21kworker/1:0+events19:58:261
203779599277813,2761cyclictest2052284-21kworker/1:0+events19:58:261
203779999275513,2740cyclictest2068375-21kworker/2:1+events21:10:182
203780199274413,2727cyclictest2101732-21kworker/3:0+events22:45:183
20377959927415,2732cyclictest2109911-21kworker/1:1+events23:15:131
203779599271912,2703cyclictest2071682-21kworker/1:2+events21:05:191
203780199269913,2682cyclictest2081211-21kworker/3:0+events21:29:123
203779599269413,2675cyclictest2082996-21kworker/1:1+events21:35:141
203779199265713,2639cyclictest2121125-21kworker/0:1+events23:45:100
203779999265313,2636cyclictest2130630-21kworker/2:0+events00:20:162
203779599261611,2601cyclictest2093737-21kworker/1:2+events22:02:381
203779599257912,2563cyclictest2134028-21kworker/1:0+events00:10:141
203779199257011,2555cyclictest2095330-21kworker/0:2+events22:10:570
203779599255610,2544cyclictest2079468-21kworker/1:0+events21:20:091
203779599255511,2540cyclictest2082996-21kworker/1:1+events21:31:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional