You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-06-14 - 07:43

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 #c, 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.

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackcslot7s.osadl.org (updated Sun Jun 14, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
337123821350,2sleep20-21swapper/221:35:112
1390991120,96rtkit-daemon0-21swapper/019:08:580
342569521020,3sleep20-21swapper/200:10:182
34206762960,3sleep20-21swapper/223:55:182
33359982700,5sleep03336003-21cpuspeed_turbos19:55:130
33698542640,4sleep03056-21PK-Backend21:30:160
331904226444,14sleep30-21swapper/319:08:453
33187752630,7sleep10-21swapper/119:05:281
331891726240,15sleep20-21swapper/219:07:112
33777442400,13sleep234-21ksoftirqd/221:54:592
33765982380,4sleep10-21swapper/121:50:141
331928299387,17cyclictest1095-21runrttasks22:31:140
34228972370,3sleep20-21swapper/200:00:222
331928499361,9cyclictest34011222wc23:00:171
331928299349,13cyclictest1095-21runrttasks21:37:050
331928499301,14cyclictest3333575-21sh19:50:001
34024672290,11chrt13-21ksoftirqd/023:05:040
3319282992917,10cyclictest3332118-21apt19:45:120
3319289992811,2cyclictest141rcu_preempt21:05:002
3319289992811,2cyclictest141rcu_preempt21:04:592
3319284992813,5cyclictest3372515-21sh21:40:011
331928299288,18cyclictest3362258-21expr21:10:140
3319282992815,11cyclictest3416102-21idleruntime-cro23:45:010
3319282992813,13cyclictest3349712-21cat20:35:110
3319282992811,15cyclictest3339165-21cut20:05:000
139099280,3rtkit-daemon3056-21PK-Backend21:26:391
331928499272,9cyclictest3397049-21apt22:50:121
331928499272,9cyclictest3342773-21apt20:15:111
331928299278,17cyclictest3327138-21cat19:30:130
331928299271,12cyclictest3433988-21apt00:35:120
331928299269,15cyclictest3366165-21grep21:20:170
331928299268,16cyclictest3356972-21ls20:55:130
331928299267,17cyclictest3424583-21sed00:05:240
331928299267,17cyclictest3339451-21expr20:05:130
331928299261,4cyclictest0-21swapper/023:00:100
3319282992612,12cyclictest3373524-21sh21:40:180
3319282992612,12cyclictest3346941-21ntp_kernel_err20:25:190
139099260,17rtkit-daemon0-21swapper/121:05:171
331928499253,7cyclictest3383177-21apt22:10:091
331928299256,18cyclictest3396846-21sed22:50:000
331928299256,17cyclictest3393958-21entropy22:40:160
331928299255,19cyclictest3378201-21ls21:55:150
3319282992510,13cyclictest3322281-21memory19:15:170
34084312240,4sleep00-21swapper/023:20:180
3319289992420,3cyclictest34-21ksoftirqd/221:00:002
3319284992410,10cyclictest883-21dbus-daemon19:17:331
331928299247,16cyclictest3319776-21expr19:10:120
331928299246,17cyclictest3400336-21sed23:00:000
331928299246,17cyclictest3353592-21basename20:45:140
331928299241,3cyclictest0-21swapper/022:15:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional