You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-08 - 22:40

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 #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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 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 rackaslot8s.osadl.org (updated Wed Apr 08, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
120592141105,25sleep20-21swapper/207:05:552
123652139103,26sleep30-21swapper/307:09:533
122342138104,23sleep10-21swapper/107:08:111
12374213697,27sleep00-21swapper/007:09:570
320752660,1sleep20-21swapper/209:33:252
234692610,2sleep30-21swapper/307:35:003
41232590,2sleep20-21swapper/211:36:372
124942540,1sleep10-21swapper/109:42:471
99632510,1sleep30-21swapper/311:16:473
290022500,2sleep30-21swapper/309:55:133
262852490,1sleep30-21swapper/311:29:483
1285099491,28cyclictest26346-21ssh10:40:543
12850994911,28cyclictest20778-21sh10:13:073
255372480,2sleep20-21swapper/210:40:222
1285099471,32cyclictest29337-21sensors11:55:223
1285099470,36cyclictest17159-21ssh10:59:043
1285099470,27cyclictest23984-21sed10:15:183
1285099461,24cyclictest2768-21sh10:24:083
1285099451,34cyclictest6206-21ssh11:38:443
1285099451,23cyclictest32013-21diskmemload10:37:573
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional