You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-11-05 - 19:05

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 #8, 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.
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 rack8slot4s.osadl.org (updated Wed Nov 05, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
696762241173,23sleep20-21swapper/207:07:492
697712233175,46sleep40-21swapper/407:09:124
696282228169,19sleep60-21swapper/607:07:136
697412221166,43sleep10-21swapper/107:08:441
696252220182,25sleep30-21swapper/307:07:093
697852216164,16sleep00-21swapper/007:09:240
695172215181,22sleep70-21swapper/707:05:387
696882209175,21sleep50-21swapper/507:08:015
7005699288,15cyclictest244607-21munin-plugin-st12:09:592
70070992624,1cyclictest105668-21apt-get08:10:136
7006599260,25cyclictest169257-21tr10:00:005
7006599260,25cyclictest169257-21tr10:00:005
7006499266,20cyclictest0-21swapper/410:20:014
7005699260,26cyclictest122651-21turbostat08:40:002
7005499260,25cyclictest116934-21sh08:29:591
7007099250,24cyclictest87850-21perf-exec07:40:006
7007099250,23cyclictest0-21swapper/609:15:016
7007299247,4cyclictest0-21swapper/709:38:597
7007099240,23cyclictest253191-21perf12:24:596
7007099240,23cyclictest166126-21perf09:55:006
7006599240,23cyclictest0-21swapper/507:24:595
70064992424,0cyclictest0-21swapper/409:30:014
70064992423,1cyclictest0-21swapper/408:15:134
7006099240,23cyclictest0-21swapper/311:55:113
7006099240,23cyclictest0-21swapper/308:10:143
70056992424,0cyclictest0-21swapper/209:15:002
70056992421,2cyclictest213311-21apt-get11:15:132
70056992415,4cyclictest0-21swapper/211:40:132
7005499240,23cyclictest2970800-21systemd-journal08:09:591
7005099240,23cyclictest253178-21turbostat.cron12:24:590
70072992321,1cyclictest0-21swapper/708:45:007
70072992320,2cyclictest198364-21sleep10:50:017
70070992323,0cyclictest0-21swapper/607:55:166
70070992321,1cyclictest0-21swapper/609:50:016
7006599230,22cyclictest186670-21awk10:30:005
7006599230,22cyclictest0-21swapper/512:15:145
7006599230,22cyclictest0-21swapper/507:55:165
7006599230,1cyclictest99959-21apt-get08:00:115
70064992321,1cyclictest0-21swapper/408:05:234
7006499230,22cyclictest0-21swapper/411:30:164
70060992322,1cyclictest0-21swapper/310:35:143
70060992322,1cyclictest0-21swapper/307:50:003
70060992321,1cyclictest204493-21apt-get11:00:133
70060992321,1cyclictest0-21swapper/310:50:123
7006099230,23cyclictest0-21swapper/308:35:003
7006099230,22cyclictest195917-21apt-get10:45:153
70056992321,2cyclictest0-21swapper/210:05:122
70056992321,1cyclictest116949-21munin-run08:29:592
70056992319,3cyclictest96395-21latency_hist07:55:012
7005699230,2cyclictest160390-21sh09:45:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional