You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-05-18 - 21:45

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 #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
  
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 50 highest latencies:
System rackeslot5s.osadl.org (updated Sun May 18, 2025 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3215699280,27cyclictest23196-21apt-get12:26:063
32155992522,2cyclictest8644-21sh08:35:002
32156992420,3cyclictest0-21swapper/311:46:003
32155992422,1cyclictest11539-21munin-run10:55:012
3215599240,23cyclictest0-21swapper/210:41:022
32156992319,4cyclictest0-21swapper/307:41:003
32156992317,6cyclictest0-21swapper/309:21:033
3215699230,22cyclictest7480-21idleruntime-cro09:40:003
3215699230,22cyclictest17500-21sendmail-msp10:00:003
3215599230,22cyclictest19963-21munin-run10:05:012
3215599230,22cyclictest11862-21apt-get10:56:062
3215599230,1cyclictest4322-21cron10:40:002
3215599230,1cyclictest30739-21cron11:34:592
3215499230,22cyclictest16342-21munin-run11:05:001
32153992323,0cyclictest0-21swapper/012:26:060
32153992323,0cyclictest0-21swapper/011:11:020
32153992320,2cyclictest28686-21idleruntime-cro08:10:000
3215399230,22cyclictest27482-21apt-get10:21:030
3215399230,1cyclictest16965-21apt-get07:46:000
32156992222,0cyclictest3032-21apt-get09:30:593
32156992222,0cyclictest0-21swapper/308:10:593
32156992221,0cyclictest0-21swapper/308:15:593
32156992220,1cyclictest6732-21turbostat10:45:003
32156992219,3cyclictest0-21swapper/311:11:023
3215699220,21cyclictest9130-21awk10:49:593
3215699220,1cyclictest4551-21grep07:19:593
3215699220,1cyclictest31094-21apt-get11:36:003
3215699220,1cyclictest28373-21awk11:30:003
32155992220,1cyclictest7511-21sendmail-msp09:40:002
3215599220,21cyclictest28673-21latency_hist08:10:002
3215599220,21cyclictest25987-21munin-run11:25:002
3215599220,21cyclictest25246-21perf12:29:592
3215599220,21cyclictest25064-21apt-get10:16:032
3215599220,21cyclictest21167-21apt11:15:002
3215599220,21cyclictest1192-21mailstats10:31:112
32154992220,1cyclictest4327-21latency_hist10:40:001
32154992220,1cyclictest28705-21apt-get11:31:031
32154992220,1cyclictest11023-21cron08:40:001
32154992220,1cyclictest0-21swapper/112:16:011
32154992219,2cyclictest27896-21idleruntime-cro09:15:011
3215499220,21cyclictest7518-21munin-run09:40:001
3215499220,21cyclictest29876-21apt-get10:26:051
3215499220,21cyclictest2455-21apt-get07:16:001
3215499220,21cyclictest0-21swapper/111:41:051
3215499220,1cyclictest0-21swapper/111:00:001
32153992220,1cyclictest9908-21apt-get09:45:020
32153992220,1cyclictest9907-21latency_hist09:45:000
32153992220,1cyclictest593-21dbus-daemon08:25:000
32153992220,1cyclictest17838-21apt-get10:01:030
3215399220,2cyclictest26278-21apt08:05:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional