You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-09-20 - 00:54

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 #1, slot #6

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
  Intel
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack1slot6s.osadl.org (updated Sat Sep 19, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31257991014,89cyclictest18054-21fschecks_time10:28:250
3125799873,65cyclictest0-21swapper/007:56:290
31257998718,63cyclictest27133-21unixbench_multi08:13:480
3125799853,75cyclictest21291-21netstat09:43:380
31257998518,51cyclictest0-21swapper/010:05:060
31257998518,42cyclictest1124-21snmpd10:45:300
3125799834,58cyclictest0-21swapper/007:35:210
3125799833,74cyclictest2569-21chrt08:27:500
3125799833,64cyclictest14735-21ssh08:44:000
3125799829,54cyclictest24000-21diskmemload08:48:400
3125799829,54cyclictest24000-21diskmemload08:48:400
3125799823,69cyclictest9884-21ssh07:48:360
3125799823,62cyclictest0-21swapper/010:22:080
3125799823,58cyclictest24000-21diskmemload07:43:380
3125799823,58cyclictest0-21swapper/010:41:560
3125799822,72cyclictest30234-21munin-node06:28:350
3125799819,54cyclictest10828-21ssh08:38:380
3125799814,58cyclictest0-21swapper/007:28:390
3125799814,58cyclictest0-21swapper/007:28:390
3125799814,57cyclictest0-21swapper/008:08:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional