You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-26 - 10:34

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 #9, slot #8

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack9slot8s.osadl.org (updated Tue May 26, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1011650,0ktimersoftd/011781-21sendmail-mta19:08:210
12281999065,0cyclictest15787-21kworker/0:123:05:300
12281998856,0cyclictest22831-21kworker/u2:000:15:030
12281998661,0cyclictest4629-21munin-run21:50:020
12281998661,0cyclictest18385-21kworker/u2:323:25:020
12281998569,0cyclictest20330-21seq19:58:490
12281998564,0cyclictest1930-21systemd-network00:20:350
12281998558,0cyclictest22709-21cron20:15:000
12281998468,0cyclictest14840-21runrttasks22:57:010
12281998461,0cyclictest18745-21sshd19:49:300
12281998459,0cyclictest18329-21kworker/u2:420:20:020
12281998357,0cyclictest26472-21kworker/0:000:15:350
12281998356,0cyclictest7791-21apt22:10:010
12281998267,0cyclictest8828-21kworker/u2:022:24:290
12281998263,0cyclictest16271-21sshd19:32:320
12281998259,0cyclictest19181-21sshd19:50:290
12281998258,0cyclictest82050irq/47-4a10000023:11:290
12281998164,0cyclictest6866-21awk22:05:010
12281998066,0cyclictest16505-21kworker/u2:423:44:390
12281998064,0cyclictest27527-21runrttasks20:46:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional