You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-06-03 - 20:52

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 Wed Jun 03, 2026 12:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
756272993834,3cyclictest793423-21kworker/u8:4+flush-259:007:50:000
756282993629,5cyclictest807893-21ntpq07:55:232
756272993629,5cyclictest980232-21cat10:45:010
756282993431,2cyclictest771149-21kworker/u8:1+flush-259:007:25:162
756282993428,4cyclictest1016779-21/usr/sbin/munin11:20:132
756278993430,3cyclictest829413-21gpgv08:20:001
756278993329,3cyclictest1026484-21kworker/u8:2+flush-259:011:50:001
756272993327,4cyclictest802668-21ntpq07:50:220
756272993326,5cyclictest1092980-21ntpq12:30:200
756287993229,2cyclictest985664-21kworker/u8:0+flush-259:012:20:163
756282993225,5cyclictest1099059-21latency_hist12:40:012
756282993127,3cyclictest830041-21kworker/u8:2+flush-259:009:19:592
756278993127,3cyclictest830041-21kworker/u8:2+flush-259:009:14:591
756272993125,4cyclictest1047862-21diskstats11:50:130
756287993025,4cyclictest968897-21ntpq10:30:213
756287992926,2cyclictest985664-21kworker/u8:0+events_unbound11:50:193
756282992924,3cyclictest985664-21kworker/u8:0+events_unbound11:40:222
756282992922,5cyclictest1031111-21ntpq11:30:202
756282992825,2cyclictest829384-21apt-get08:20:022
756282992824,3cyclictest735798-21kworker/u8:0+events_unbound08:10:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional