You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-11-18 - 06:05

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 #a, slot #5

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
  TI
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 rackaslot5s.osadl.org (updated Tue Nov 18, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81920,0rcu_preempt3-21ksoftirqd/023:54:150
81840,0rcu_preempt0-21swapper/122:57:321
81830,0rcu_preempt0-21swapper/122:15:311
81810,0rcu_preempt19-21ksoftirqd/122:30:031
81810,0rcu_preempt19-21ksoftirqd/122:30:031
10050810,0irq/346-4848400111rcuc/021:55:050
10050800,0irq/346-4848400111rcuc/021:22:280
18572770,0sleep010050irq/346-484840020:05:320
81760,0rcu_preempt19-21ksoftirqd/123:59:581
81760,0rcu_preempt19-21ksoftirqd/119:29:591
10050760,0irq/346-4848400111rcuc/022:53:350
35322750,0sleep010050irq/346-484840020:10:580
35322750,0sleep010050irq/346-484840020:10:580
81730,0rcu_preempt3-21ksoftirqd/000:04:500
81710,0rcu_preempt19-21ksoftirqd/123:40:071
81710,0rcu_preempt19-21ksoftirqd/121:42:371
81710,0rcu_preempt19-21ksoftirqd/119:24:391
81710,0rcu_preempt19-21ksoftirqd/100:39:141
81700,0rcu_preempt19-21ksoftirqd/123:20:351
81690,0rcu_preempt554-21kworker/1:021:32:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional