You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-06 - 22:07

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 #5, 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
  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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack5slot4s.osadl.org (updated Wed May 06, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
397421522170,3sleep375-21kworker/3:1+events09:21:153
39916632870,3sleep20-21swapper/209:41:062
38543662790,5sleep20-21swapper/207:21:092
39818432780,5sleep10-21swapper/109:31:051
39365232780,3sleep375-21kworker/3:1+events08:46:053
3838729997566,7cyclictest3833665-21kworker/u8:2+flush-8:007:31:161
3838733997266,4cyclictest4059386-21kworker/u8:2+flush-8:011:06:162
3838729996858,7cyclictest3964710-21latency_hist09:15:011
3838729996857,8cyclictest3929845-21latency_hist08:40:011
3838729996555,7cyclictest3944916-21latency_hist08:55:011
3838729996151,7cyclictest3949851-21latency_hist09:00:011
3838727995955,3cyclictest3786722-21kworker/u8:3+flush-8:008:26:050
3838729995646,7cyclictest280-21systemd-journal08:19:591
3838729995443,9cyclictest4038913-21apt-get10:30:001
3838727995448,4cyclictest4119052-21apt-get11:50:570
3838729995144,5cyclictest3865680-21apt-get07:35:571
3838729995142,6cyclictest4128837-21latency_hist12:00:001
3838729995141,8cyclictest280-21systemd-journal12:40:001
3838727995146,3cyclictest3989729-21kworker/u8:0+flush-8:010:01:010
3838727995141,8cyclictest3984285-21kworker/u8:3+flush-8:010:51:170
3838729994940,7cyclictest280-21systemd-journal08:35:001
3838727994943,5cyclictest3959975-21kworker/u8:1+flush-8:011:36:130
3838727994940,7cyclictest280-21systemd-journal07:35:010
3838727994842,4cyclictest3959975-21kworker/u8:1+events_unbound10:41:010
38733232470,1chrt3873326-21kthreadcore07:41:040
3838729994738,6cyclictest3905149-21latency_hist08:15:011
3838727994737,8cyclictest4103041-21ntpq11:31:090
41677222460,3sleep20-21swapper/212:36:142
3838727994639,5cyclictest3934827-21latency_hist08:45:010
3838729994539,4cyclictest4009585-21apt-get10:00:561
3838727994535,7cyclictest4009247-21latency_hist10:00:010
39586332440,2sleep3471rcuc/309:06:063
3838727994438,5cyclictest3890552-21kworker/u8:2+events_unbound08:16:160
3838727994438,5cyclictest3865363-21kworker/u8:1+events_unbound07:40:010
3838727994433,8cyclictest3959975-21kworker/u8:1+flush-8:009:41:070
3838729994335,5cyclictest3910308-21kworker/u8:1+flush-8:008:46:011
3838727994339,3cyclictest3959975-21kworker/u8:1+flush-8:010:21:170
3838727994337,4cyclictest3786722-21kworker/u8:3+events_unbound08:00:000
3838729994236,4cyclictest3994750-21apt-get09:45:551
3838729994131,7cyclictest4108825-21latency_hist11:40:011
3838727994130,8cyclictest3890619-21/usr/sbin/munin08:01:150
3838729994035,4cyclictest3843726-21kworker/u8:0+flush-8:007:16:141
3838729994032,6cyclictest3786722-21kworker/u8:3+flush-8:007:51:011
3838727994034,4cyclictest3944174-21kworker/u8:2+flush-8:009:36:150
3838727994034,3cyclictest8550irq/124-ahci[0000:00:12.0]12:16:000
3838733993931,6cyclictest280-21systemd-journal09:20:012
3838729993933,4cyclictest3843726-21kworker/u8:0+flush-8:009:06:011
3838727993934,4cyclictest3843726-21kworker/u8:0+events_unbound08:11:040
3838727993933,4cyclictest4139029-21apt-get12:10:560
3838727993933,4cyclictest3843726-21kworker/u8:0+events_unbound09:16:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional