You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-03-25 - 17:55

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 #7, 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 rack7slot4s.osadl.org (updated Wed Mar 25, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
567899602,45cyclictest14028-21ssh11:45:142
5662996010,10cyclictest131rcu_preempt11:10:110
5678995944,10cyclictest26557-21sh10:05:132
5686995839,11cyclictest28366irq/58-eth010:55:133
567899581,5cyclictest0-21swapper/208:05:142
567099581,45cyclictest31718-21ssh09:50:141
567899571,42cyclictest924-21snmpd12:05:122
566299552,7cyclictest131rcu_preempt07:45:120
567099533,40cyclictest27980-21ssh09:30:131
566299513,45cyclictest11396-21ssh10:50:120
567899501,44cyclictest0-21swapper/211:10:112
567899501,3cyclictest0-21swapper/208:30:132
567899501,38cyclictest924-21snmpd11:00:122
567099492,7cyclictest131rcu_preempt09:55:111
567099492,7cyclictest131rcu_preempt09:55:111
566299493,10cyclictest131rcu_preempt08:10:120
567899481,2cyclictest27622-21apt-get08:40:132
566299484,38cyclictest10282-21ssh11:25:110
566299484,38cyclictest10282-21ssh11:25:110
567899471,3cyclictest0-21swapper/207:45:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional