You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-08-21 - 17:47

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 #b, slot #7

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.

Note that this system runs a non-RT kernel.
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: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackbslot7s.osadl.org (updated Fri Aug 21, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
153552666612,6641sleep015292-21kworker/0:007:47:200
188612314011,3114sleep018825-21apt-get11:24:590
92372110211,1076sleep318636-1kworker/3:0H10:54:373
9140252019,486sleep39184-21ntpq09:09:473
3615248410,461sleep13653-21fschecks_count12:19:421
19414247516,442sleep319475-21/usr/sbin/munin11:26:153
17428241114,383sleep317476-21ntpq11:19:493
17428241114,383sleep317476-21ntpq11:19:493
857239516,359sleep1922-21fschecks_time08:44:461
318223848,364sleep13226-21ntpq10:34:491
1880623759,350sleep118825-21apt-get11:24:351
287582329155,154sleep10-21swapper/110:14:261
1697322580,7sleep20-21swapper/211:19:272
13349224075,106sleep113478-21timerwakeupswit07:39:581
5658223750,90sleep10-21swapper/108:59:401
5658223750,90sleep10-21swapper/108:59:401
3843223661,158sleep13975-21latency_hist08:54:271
3137722318,208sleep131472-21perl12:04:441
16259221831,171sleep116281-21idleruntime-cro09:34:241
24347220521,165sleep024341-21apt-get09:59:390
7214220416,19sleep10-21swapper/110:49:261
7214220416,19sleep10-21swapper/110:49:261
30625220313,176sleep030702-21cat08:35:040
17153220211,129sleep10-21swapper/107:54:271
183421958,167sleep11916-21timerandwakeup10:29:561
2867219318,158sleep32901-21cut10:34:433
15465219044,66sleep10-21swapper/111:14:381
1765321864,171sleep00-21swapper/009:37:260
20890218353,109sleep120950-21fschecks_time08:04:531
17622217914,31sleep00-21swapper/011:19:540
17622217914,31sleep00-21swapper/011:19:540
13922217823,141sleep113987-21cpuspeed11:09:411
25097217524,130sleep325156-21basename08:19:243
25097217524,130sleep325156-21basename08:19:243
30703216814,70sleep10-21swapper/108:35:051
28540216677,18sleep10-21swapper/111:54:511
754421599,135sleep17635-21grep10:49:431
30346215711,131sleep130459-21latency_hist10:19:261
31188215631,70sleep131277-21cat10:19:551
548321536,135sleep10-21swapper/110:42:441
18308214715,113sleep218321-21apt-get11:24:242
18308214715,113sleep218321-21apt-get11:24:242
21492213816,102sleep021556-21cat09:49:460
28996213515,104sleep028991-21apt-get10:14:370
26100213511,109sleep126226-21cat08:20:031
26100213511,109sleep126226-21cat08:20:031
805321349,54sleep10-21swapper/107:24:521
8077212613,18sleep00-21swapper/010:49:540
14712212540,71sleep114743-21idleruntime-cro09:29:241
6882212314,80sleep10-21swapper/107:19:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional