You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-08 - 01:48

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 #4, slot #1

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack4slot1s.osadl.org (updated Fri May 08, 2026 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
293782820,2sleep1271rcuc/122:27:391
293782820,2sleep1271rcuc/122:27:391
230352640,2chrt0-21swapper/023:37:410
230352640,2chrt0-21swapper/023:37:410
230352640,2chrt0-21swapper/023:37:410
144152610,3sleep20-21swapper/223:17:212
144152610,3sleep20-21swapper/223:17:212
179322600,2chrt17935-21mailstats21:57:390
179322600,2chrt17935-21mailstats21:57:390
125412590,4chrt0-21swapper/000:37:350
125412590,4chrt0-21swapper/000:37:350
20343995141,8cyclictest31445-21/usr/sbin/munin00:02:320
20343995141,8cyclictest31445-21/usr/sbin/munin00:02:320
128062500,3sleep30-21swapper/300:37:383
128062500,3sleep30-21swapper/300:37:383
20343994537,6cyclictest0-21swapper/000:02:250
20343994537,6cyclictest0-21swapper/000:02:250
20344994031,7cyclictest26732-21latency_hist20:57:191
20343993628,6cyclictest21969-21unixbench_multi22:07:420
20343993628,6cyclictest21969-21unixbench_multi22:07:420
20344993529,5cyclictest32702-21netstat22:37:371
20344993529,5cyclictest32702-21netstat22:37:371
20344993529,4cyclictest24458-21kernelversion23:42:341
20343993529,4cyclictest26113-21gltestperf23:47:330
20343993529,4cyclictest26113-21gltestperf23:47:330
20343993525,8cyclictest4399-21kernelversion21:22:340
20343993525,8cyclictest4399-21kernelversion21:22:340
20344993429,3cyclictest0-21swapper/100:02:201
20344993429,3cyclictest0-21swapper/100:02:201
20344993426,6cyclictest31063-21latency_hist19:42:191
20344993426,6cyclictest31063-21latency_hist19:42:191
20344993325,6cyclictest13154-21threads00:37:431
20344993325,6cyclictest13154-21threads00:37:431
2034499332,25cyclictest32109-21strings00:02:371
2034499332,25cyclictest32109-21strings00:02:371
20343993328,3cyclictest23882-21head22:12:440
20343993328,3cyclictest23882-21head22:12:440
20343993327,4cyclictest1-21systemd21:17:390
20343993327,4cyclictest1-21systemd21:17:390
305602320,3chrt0-21swapper/319:37:413
305602320,3chrt0-21swapper/319:37:413
20344993225,5cyclictest31399-21netstat21:07:371
20344993225,5cyclictest31399-21netstat21:07:371
20344993225,5cyclictest18039-21if_eth020:32:331
20344993225,5cyclictest18039-21if_eth020:32:331
123732320,3sleep20-21swapper/221:42:432
123732320,3sleep20-21swapper/221:42:432
2034599312,14cyclictest0-21swapper/200:02:262
2034599312,14cyclictest0-21swapper/200:02:262
20344993125,4cyclictest9894-21grep20:12:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional