You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-06-28 - 21:33

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 Sun Jun 28, 2026 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1799522510,2sleep017992-21grep08:05:010
3272421590,3sleep032725-21sort11:05:290
2688121430,3sleep026879-21latency_hist10:45:010
653821200,2sleep06541-21processes11:30:280
2158021160,3sleep021577-21cat12:30:010
943421130,4sleep09437-21timerwakeupswit09:35:270
1286421120,4chrt12866-21latency_hist07:45:010
152642930,3sleep015295-21/usr/sbin/munin12:05:150
82282920,4sleep08296-21timerandwakeup07:25:290
63392916,72sleep06370-21latency_hist07:20:010
60282880,2sleep06029-21modprobe11:29:590
283892865,11sleep028417-21irqstats10:50:140
156492830,4sleep015694-21processes10:00:250
289526818,28sleep02977-21awk07:05:220
249862684,52sleep00-21swapper08:30:290
142092663,52sleep00-21swapper12:00:250
3769996532,23cyclictest2892-21/usr/sbin/munin09:10:270
3769996110,19cyclictest3322-21seq11:19:090
376999608,21cyclictest23560-21wc10:30:260
376999607,18cyclictest5013-21/usr/sbin/munin09:20:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional