You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-23 - 03:44

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 #f, 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.

Total number of samples: 100 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 rackfslot4s.osadl.org (updated Thu Apr 23, 2026 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1877821320,3chrt18772-21aten2.4-expect00:05:360
1868921220,2chrt18677-21ntpq23:16:180
1379221220,2sleep013794-21sed23:57:220
542521200,2chrt5426-21aten2.4_rfpower21:20:360
1714121180,2chrt17142-21/usr/sbin/munin21:37:250
1716021140,2chrt17159-21seq23:14:440
1702921140,2chrt17030-21sh00:02:200
1398621140,2chrt13987-21ld19:50:570
977321130,2chrt9768-21ntpq20:36:000
2435421120,3chrt24355-21cut19:16:250
634321110,3chrt6344-21apt-config00:35:170
3218721100,2chrt32188-21sleep00:25:390
1299621100,3chrt12997-21sleep23:07:430
771121090,2chrt7708-21nfs4_client19:40:500
921521080,2sleep09216-21cat23:51:000
532721080,2sleep05328-21chrt22:08:270
2884921080,2chrt28850-21seq22:43:090
1202221080,2sleep012021-21seq22:18:070
956821070,2chrt9566-21/usr/sbin/munin21:26:130
104221070,3chrt1043-21sh22:01:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional