You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-03-12 - 03:00

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 #4, slot #6

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.

Total number of samples: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack4slot6s.osadl.org (updated Thu Mar 12, 2026 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
417823000,3sleep04181-21cpu21:45:100
1341722450,3sleep013418-21missed_timers22:20:200
2901821680,3sleep029015-21cat21:15:180
307321410,2sleep03075-21uname23:45:260
961121320,2sleep09612-21cat20:00:170
172521190,4chrt1723-21/usr/sbin/munin19:30:090
566821160,4chrt5656-21netstat21:50:200
1233621160,3sleep011879-21/usr/sbin/munin22:15:270
3021621130,3sleep030219-21df21:20:120
2378021130,4chrt23779-21tr23:00:190
2675621060,3chrt26757-21switchtime21:05:270
196392990,4sleep019640-21/usr/sbin/munin22:45:110
214962930,4sleep021542-21awk20:45:260
111212910,3sleep011118-21ps20:05:230
33212887,11sleep03360-21processes19:35:230
317222887,67sleep031733-21ntp_states21:25:200
2823827418,32sleep028302-21users19:05:250
190082630,3sleep019009-21ls20:35:260
28919996111,18cyclictest16079-21irqstats20:25:150
2891999608,18cyclictest27557-21/usr/sbin/munin21:10:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional