You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2024-06-22 - 04:59

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 20 highest latencies:
System rack8slot4s.osadl.org (updated Fri Jun 21, 2024 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8926262218186,20sleep50-21swapper/507:09:065
8924512217183,21sleep00-21swapper/007:06:370
8926752209173,23sleep70-21swapper/707:09:507
8925792208174,22sleep60-21swapper/607:08:286
8924432208178,19sleep10-21swapper/107:06:301
8924542206174,20sleep30-21swapper/307:06:403
8924642204170,21sleep20-21swapper/207:06:472
8924752203175,18sleep40-21swapper/407:06:584
89291899260,25cyclictest985965-21awk09:50:003
892909992622,4cyclictest0-21swapper/110:24:591
89290999260,3cyclictest936953-21munin-run08:25:011
89292799250,24cyclictest959866-21perf09:05:006
89291899250,24cyclictest931183-21awk08:15:003
892924992420,0cyclictest201rcu_preempt09:40:105
89292299240,23cyclictest0-21swapper/412:15:024
89291899240,23cyclictest948416-21awk08:44:593
89291899240,23cyclictest904973-21latency_hist07:30:013
89291499240,23cyclictest0-21swapper/209:20:102
892909992422,1cyclictest914108-21apt-get07:45:121
89290999240,1cyclictest0-21swapper/112:05:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional