You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-07-15 - 22:25

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 Tue Jul 15, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9836422230197,21sleep30-21swapper/307:09:543
9836332224167,17sleep40-21swapper/407:09:464
9835142223190,21sleep00-21swapper/007:08:050
9833772223167,18sleep20-21swapper/207:06:072
9834452220164,44sleep50-21swapper/507:07:065
9834462214162,17sleep60-21swapper/607:07:076
9835152212185,17sleep10-21swapper/107:08:061
9834762212178,22sleep70-21swapper/707:07:327
98388799290,28cyclictest0-21swapper/509:15:185
98387699270,1cyclictest1047607-21munin-run09:00:001
983894992622,3cyclictest0-21swapper/709:15:197
983894992621,4cyclictest1013359-21tr08:00:007
98389499250,24cyclictest0-21swapper/707:15:167
98389499250,21cyclictest0-21swapper/709:00:017
98389499240,23cyclictest1044751-21munin-run08:55:017
98389499240,23cyclictest0-21swapper/712:30:137
98389499240,23cyclictest0-21swapper/709:30:007
98389499240,22cyclictest0-21swapper/712:25:137
983892992422,1cyclictest1105964-21apt-get10:40:146
983887992422,1cyclictest0-21swapper/510:25:025
983887992421,2cyclictest1154362-21munin-run12:05:005
983887992420,3cyclictest1111665-21apt-get10:50:145
98388799240,20cyclictest1022317-21apt-get08:15:135
98388399241,1cyclictest0-21swapper/307:45:013
983881992422,1cyclictest1076860-21apt-get09:50:112
983881992420,3cyclictest1093573-21apt-get10:20:012
983876992422,2cyclictest0-21swapper/109:15:191
983876992420,4cyclictest1013329-21munin-run08:00:001
98387699240,1cyclictest0-21swapper/108:05:181
98387699240,0cyclictest0-21swapper/110:45:141
983894992321,1cyclictest0-21swapper/708:35:117
983894992321,1cyclictest0-21swapper/708:35:117
98389499230,22cyclictest1021904-21perf08:15:007
983892992321,1cyclictest0-21swapper/610:10:126
98389299230,22cyclictest1114514-21apt-get10:55:146
98389299230,22cyclictest0-21swapper/611:09:596
98389299230,1cyclictest0-21swapper/610:25:006
98389299230,0cyclictest0-21swapper/607:45:026
983887992321,1cyclictest1053743-21apt-get09:10:115
983887992321,1cyclictest0-21swapper/507:35:125
983887992320,2cyclictest1005195-21apt-get07:45:145
983887992319,4cyclictest0-21swapper/510:45:145
983887992318,4cyclictest0-21swapper/512:20:135
98388799230,22cyclictest0-21swapper/511:35:135
98388799230,22cyclictest0-21swapper/508:55:145
983886992322,0cyclictest0-21swapper/411:25:134
98388699230,1cyclictest0-21swapper/411:40:014
983883992322,1cyclictest1016206-21turbostat08:05:003
983883992321,1cyclictest0-21swapper/311:10:143
983883992319,3cyclictest1047597-21apt09:00:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional