You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-18 - 21:13

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 #c, 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 rackcslot7s.osadl.org (updated Sat Apr 18, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
68873222780,17sleep00-21swapper/007:05:200
70555321270,3sleep20-21swapper/207:50:202
68863221260,15sleep3421ksoftirqd/307:05:203
74085121250,2sleep2331rcuc/209:30:192
73273121220,3sleep00-21swapper/009:10:010
77837921100,4sleep13056-21PK-Backend11:20:021
68947726741,20sleep20-21swapper/207:09:182
68926826241,14sleep10-21swapper/107:06:361
8045592530,2sleep13056-21PK-Backend12:35:011
8045592530,2sleep13056-21PK-Backend12:35:001
8052192470,10sleep234-21ksoftirqd/212:35:132
8016862470,2sleep30-21swapper/312:25:163
7702962440,3sleep20-21swapper/210:55:202
7165422340,4sleep03056-21PK-Backend08:20:210
68967299345,9cyclictest709736-21grep08:04:593
68967299331,9cyclictest0-21swapper/310:25:003
689670993312,5cyclictest34-21ksoftirqd/207:20:002
68967299321,14cyclictest0-21swapper/307:20:013
68967099322,2cyclictest141rcu_preempt09:15:002
68967299315,15cyclictest753847-21chrt10:10:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional