You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-11-22 - 21:25

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 #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 Sat Nov 22, 2025 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7989992423,1cyclictest12695-21apt-get09:32:132
7986992422,1cyclictest1841-21cron10:15:011
7986992422,1cyclictest12272-21basename09:30:001
7989992323,0cyclictest0-21swapper/210:47:122
7989992321,1cyclictest0-21swapper/212:35:002
798999230,22cyclictest27691-21apt12:15:002
7982992320,2cyclictest30096-21wc12:20:000
798299230,22cyclictest1155-21sendmail11:20:000
7992992222,0cyclictest3985-21apt-get11:27:123
7992992221,0cyclictest16782-21apt-get10:47:133
7992992220,1cyclictest31162-21grep11:15:003
7992992220,1cyclictest19806-21munin-run08:40:003
7992992220,1cyclictest0-21swapper/310:20:003
799299220,21cyclictest9866-21sh09:25:013
799299220,21cyclictest15088-21apt-get09:37:103
799299220,21cyclictest0-21swapper/310:52:113
799299220,21cyclictest0-21swapper/308:10:023
799299220,21cyclictest0-21swapper/307:42:123
799299220,1cyclictest0-21swapper/308:35:013
7989992220,1cyclictest7361-21cron09:20:012
7989992220,1cyclictest20300-21apt-get09:47:132
798999220,21cyclictest27818-21apt-get08:57:122
798999220,21cyclictest23920-21cron11:00:012
798999220,21cyclictest0-21swapper/211:57:112
798999220,1cyclictest25420-21apt-get08:52:122
798999220,1cyclictest24391-21apt-get11:02:132
798699220,21cyclictest2947-21apt-get08:07:111
798699220,21cyclictest29181-21apt-get11:12:121
798699220,21cyclictest21967-21apt-get10:57:101
798699220,21cyclictest17900-21apt-get09:42:101
798699220,21cyclictest10832-21sendmail-msp11:39:591
798699220,21cyclictest10625-21apt-get08:22:131
798699220,21cyclictest0-21swapper/112:32:111
798699220,21cyclictest0-21swapper/107:12:111
7982992220,1cyclictest0-21swapper/012:40:010
7982992220,1cyclictest0-21swapper/010:50:000
798299220,21cyclictest6382-21apt-get11:32:100
798299220,21cyclictest31167-21munin-run11:15:000
798299220,21cyclictest0-21swapper/011:42:110
798299220,21cyclictest0-21swapper/007:50:010
7992992120,1cyclictest27511-21apt-get10:02:103
7992992120,0cyclictest0-21swapper/308:02:113
7992992119,1cyclictest13253-21munin-plugin-st11:45:013
799299210,20cyclictest0-21swapper/312:27:123
799299210,20cyclictest0-21swapper/308:52:113
799299210,1cyclictest4581-21sh09:15:003
799299210,0cyclictest0-21swapper/307:17:123
7989992121,0cyclictest30532-21apt-get12:22:122
7989992120,0cyclictest25094-21apt-get09:57:122
7989992119,1cyclictest7318-21munin-run12:40:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional