You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-07-07 - 14:53

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 #9, slot #8

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.

Total number of samples: 50 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 rack9slot8s.osadl.org (updated Tue Jul 07, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501860,0irq/46-4a10000027786-21kworker/0:019:07:090
302669912327,0cyclictest32189-21sendmail-msp19:20:030
302669912227,0cyclictest6916-21sendmail-msp23:40:020
302669911831,0cyclictest5100-21kworker/u2:120:15:020
302669911825,0cyclictest28899-21sshd22:30:260
302669911629,0cyclictest13298-21latency_hist20:50:020
302669911541,0cyclictest94750irq/33-mmc023:42:440
302669911511,0cyclictest23347-21dpkg21:55:070
302669911326,0cyclictest10562-21kworker/u2:320:35:020
302669911324,0cyclictest1699-21apt23:05:010
302669911234,0cyclictest28811-21latency_hist22:30:020
302669911228,0cyclictest9588-21munin-run20:25:020
302669911227,0cyclictest29635-21sshd22:35:270
302669911224,0cyclictest12232-21sshd00:14:380
302669911220,0cyclictest9297-21cron23:55:010
302669911220,0cyclictest26307-21latency_hist22:15:010
302669911127,0cyclictest16803-21sshd21:13:260
302669911125,0cyclictest18664-21apt-key21:25:070
302669911122,0cyclictest13834-21latency_hist00:25:030
302669911121,0cyclictest23150-21apt-get21:55:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional