You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-03-08 - 01:56

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 #e, 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 rackeslot4s.osadl.org (updated Fri Mar 06, 2026 12:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
870817995148,2cyclictest75-21kswapd012:07:423
870817995148,2cyclictest75-21kswapd012:07:423
870807995147,3cyclictest1177646-21kworker/u8:0+flush-259:012:07:590
870807995147,3cyclictest1177646-21kworker/u8:0+flush-259:012:07:590
870810994744,2cyclictest75-21kswapd012:07:411
870810994744,2cyclictest75-21kswapd012:07:411
870810993431,2cyclictest948763-21kworker/u8:0+flush-259:010:00:211
870810993330,2cyclictest948763-21kworker/u8:0+events_unbound09:15:161
870817993225,5cyclictest1006299-21diskstats09:20:133
870810993229,2cyclictest901772-21kworker/u8:1+flush-259:008:00:151
870817993125,4cyclictest1069104-21/usr/sbin/munin10:20:143
870810993128,2cyclictest948763-21kworker/u8:0+flush-259:009:45:161
870810993027,2cyclictest928271-21kworker/u8:3+events_unbound08:35:211
870815992825,2cyclictest75-21kswapd012:07:422
870815992825,2cyclictest75-21kswapd012:07:422
870807992824,3cyclictest1198321-21kworker/u8:2+flush-259:012:25:150
870810992725,2cyclictest959472-21kworker/u8:2+flush-259:009:10:161
870810992723,2cyclictest1161784-21kworker/u8:4+flush-259:011:55:001
87080799271,24cyclictest1042368-21munin-run09:55:010
870810992623,2cyclictest948763-21kworker/u8:0+events_unbound09:25:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional