You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-08-24 - 03:34

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 #a, slot #8

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 rackaslot8s.osadl.org (updated Mon Aug 24, 2026 00:45:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
483021710,1sleep10-21swapper/121:51:271
234302171102,28sleep30-21swapper/319:05:023
234302171102,28sleep30-21swapper/319:05:013
253292165111,28sleep10-21swapper/119:09:531
253292165111,28sleep10-21swapper/119:09:531
250532161110,28sleep00-21swapper/019:06:190
250532161110,28sleep00-21swapper/019:06:190
969221590,2sleep30-21swapper/322:19:583
969221590,2sleep30-21swapper/322:19:583
249882157107,27sleep20-21swapper/219:05:282
249882157107,27sleep20-21swapper/219:05:282
249532720,3sleep00-21swapper/023:18:480
52422660,3sleep1211rcuc/122:40:151
151312650,3chrt15130-21ssh21:35:192
171532640,2sleep012-21ksoftirqd/021:13:110
235812590,1sleep00-21swapper/023:40:550
261832570,2sleep10-21swapper/100:07:111
181432560,1sleep30-21swapper/321:14:093
81722540,3sleep125609-21cyclictest23:30:161
195862530,3chrt0-21swapper/000:02:210
56342510,8sleep122-21ksoftirqd/123:04:431
56342510,8sleep122-21ksoftirqd/123:04:431
208282490,8sleep228-21ksoftirqd/200:27:032
208282490,8sleep228-21ksoftirqd/200:27:032
168332490,2sleep00-21swapper/023:12:240
130132490,1sleep20-21swapper/223:33:492
76932450,1sleep00-21swapper/023:53:580
303162450,3chrt0-21swapper/222:35:072
102232450,2sleep2271rcuc/200:19:562
71602440,3sleep17163-21latency_hist21:30:001
277472440,1sleep20-21swapper/200:08:462
277252420,2chrt0-21swapper/221:45:112
174792420,1sleep30-21swapper/323:13:043
87722410,1sleep00-21swapper/023:06:060
255992400,1sleep30-21swapper/323:19:273
71112360,3chrt0-21swapper/122:17:251
71112360,3chrt0-21swapper/122:17:241
85502330,2sleep30-21swapper/300:18:173
303582320,10sleep122-21ksoftirqd/121:46:171
2561499321,28cyclictest31119-21python319:20:233
2561399291,26cyclictest0-21swapper/220:03:342
291232280,2sleep00-21swapper/020:30:240
25613992821,4cyclictest31713-21taskset19:23:242
2561299281,25cyclictest0-21swapper/120:41:581
2561299281,25cyclictest0-21swapper/119:21:481
2561199281,25cyclictest0-21swapper/021:06:240
2561199281,25cyclictest0-21swapper/019:39:490
312852270,3sleep30-21swapper/320:35:253
25614992719,6cyclictest22972-21runrttasks20:17:083
2561499271,24cyclictest0-21swapper/320:28:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional