You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-09-22 - 09:06

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 #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.

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 rackeslot4s.osadl.org (updated Tue Sep 22, 2026 00:44:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3430962995549,4cyclictest3478684-21gpgv19:55:003
3430958995245,5cyclictest3771028-21latency_hist00:35:012
3430952995148,3cyclictest3393027-21kworker/u8:3+events_unbound21:50:230
3430955994842,4cyclictest3656166-21base6422:45:011
3430952994739,5cyclictest3682706-21diskstats23:10:130
3430952994542,2cyclictest3393027-21kworker/u8:3+events_unbound21:40:220
3430952994542,2cyclictest3393027-21kworker/u8:3+events_unbound20:20:230
3430962994339,3cyclictest3562124-21kworker/u8:2+flush-259:021:25:113
3430952994339,3cyclictest3745225-21kworker/u8:0+events_unbound00:20:140
3430952994339,3cyclictest3393027-21kworker/u8:3+events_unbound22:30:260
3430958994236,4cyclictest3708430-21apt-get23:35:112
3430958994236,4cyclictest3467473-21apt-get19:45:012
3430955994034,5cyclictest3457307-21base6419:35:001
3430952994037,2cyclictest3446388-21kworker/u8:0+events_unbound19:27:010
3430952994036,3cyclictest3393027-21kworker/u8:3+events_unbound20:55:190
3430962993934,4cyclictest3393027-21kworker/u8:3+flush-259:022:05:003
3430955993935,3cyclictest3467621-21kworker/u8:0+events_unbound19:45:251
3430955993935,3cyclictest3393027-21kworker/u8:3+flush-259:021:55:251
3430952993932,5cyclictest3671080-21ntpq22:55:230
3430952993931,6cyclictest3562338-21/usr/sbin/munin21:15:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional