You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-06-04 - 11:36

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 Jun 04, 2026 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2264422650,3sleep022645-21systemctl20:10:220
922122480,3sleep09219-21grep23:45:240
553521180,3sleep05534-21wc21:25:240
1910621150,3sleep019108-21latency_hist00:25:010
1532721130,2sleep015328-21modprobe19:35:000
1776621040,3sleep017791-21munin-run00:20:000
2761621020,3sleep027615-21ls22:50:270
142362990,2sleep014253-21missed_timers00:05:190
101972980,4sleep010215-21/usr/sbin/munin19:10:140
287502960,3sleep028753-21sort20:40:210
196752940,2sleep019671-21ntpq22:20:200
180622930,4sleep018102-21latency_hist19:50:010
288122880,2sleep028809-21find22:55:240
37862870,3sleep03787-21/usr/sbin/munin23:25:130
10033998259,14cyclictest14811-21/usr/sbin/munin22:00:290
10033998258,13cyclictest13346-21/usr/sbin/munin00:00:280
10033998153,17cyclictest9268-21/usr/sbin/munin21:40:180
10033998151,15cyclictest13698-21sshd21:56:580
10033998053,15cyclictest23926-21seq20:18:460
10033997954,14cyclictest1980-21chrt23:17:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional