You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-06-17 - 15:04

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 Wed Jun 17, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
820501740,0irq/47-4a1000008979-21runrttasks07:08:420
82050860,0irq/47-4a10000030495-21runrttasks09:27:330
82050850,0irq/47-4a10000015948-21sshd11:26:160
81950840,0irq/46-4a10000019442-21runrttasks08:15:370
82050820,0irq/47-4a10000022020-21awk12:05:000
82050810,0irq/47-4a10000020653-21sshd11:55:170
82050810,0irq/47-4a1000001314-21seq09:49:560
81950810,0irq/46-4a10000017245-21sshd11:34:160
82050800,0irq/47-4a1000008774-21sendmail10:40:020
82050800,0irq/47-4a1000005034-21cron10:15:000
82050800,0irq/47-4a10000030081-21apt09:25:010
82050800,0irq/47-4a10000016061-21sshd07:53:160
82050800,0irq/47-4a10000011018-21seq07:19:370
81950800,0irq/46-4a10000015693-21munin-plugin-st11:25:010
65822806,0sleep06655-21ls10:25:020
155162800,0chrt11351-21kworker/u2:407:49:460
82050790,0irq/47-4a1000002827-21sendmail10:00:010
82050790,0irq/47-4a10000027380-21cron12:39:590
82050790,0irq/47-4a10000014767-21sendmail-msp11:20:010
82050790,0irq/47-4a10000012115-21kworker/u2:208:15:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional