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2026-06-08 - 16:54

OSADL QA Farm on Real-time of Mainline Linux

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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 
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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 100 highest latencies:
System rack4slot1s.osadl.org (updated Mon Jun 08, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3228321210,3sleep30-21swapper/310:38:113
3228321210,3sleep30-21swapper/310:38:113
1792421180,5sleep20-21swapper/211:27:592
1792421180,5sleep20-21swapper/211:27:592
1249021070,2sleep30-21swapper/309:47:543
1249021070,2sleep30-21swapper/309:47:543
282022820,4sleep30-21swapper/307:33:593
282022820,4sleep30-21swapper/307:33:593
31682810,2chrt0-21swapper/210:48:032
31682810,2chrt0-21swapper/210:48:032
31682810,2chrt0-21swapper/210:48:032
155572810,4sleep30-21swapper/308:28:023
155572810,4sleep30-21swapper/308:28:023
155572810,4sleep30-21swapper/308:28:023
37362730,4sleep13740-21wc10:48:101
37362730,4sleep13740-21wc10:48:101
37362730,4sleep13740-21wc10:48:101
194672640,2sleep119530-21/usr/sbin/munin08:38:061
96272610,3chrt0-21swapper/008:13:000
318262600,1sleep00-21swapper/010:38:040
318262600,1sleep00-21swapper/010:38:040
151452590,2sleep20-21swapper/209:53:042
151452590,2sleep20-21swapper/209:53:042
327672580,2sleep0303-21awk09:13:100
327672580,2sleep0303-21awk09:13:100
327672580,2sleep0303-21awk09:13:100
80062560,2sleep30-21swapper/312:28:023
80062560,2sleep30-21swapper/312:28:023
80912550,4chrt0-21swapper/211:02:502
80912550,4chrt0-21swapper/211:02:502
223942540,3sleep20-21swapper/210:13:022
223942540,3sleep20-21swapper/210:13:022
223942540,3sleep20-21swapper/210:13:022
307952520,3sleep00-21swapper/007:43:010
307952520,3sleep00-21swapper/007:43:010
122422520,1chrt0-21swapper/311:13:003
122422520,1chrt0-21swapper/311:13:003
122422520,1chrt0-21swapper/311:13:003
104852520,3sleep20-21swapper/209:42:472
104852520,3sleep20-21swapper/209:42:472
104852520,3sleep20-21swapper/209:42:472
27442510,3chrt0-21swapper/212:13:052
27442510,3chrt0-21swapper/212:13:052
27442510,3chrt0-21swapper/212:13:052
195682460,2sleep30-21swapper/311:32:583
195682460,2sleep30-21swapper/311:32:583
195682460,2sleep30-21swapper/311:32:583
251192450,3chrt0-21swapper/308:53:073
251192450,3chrt0-21swapper/308:53:073
224622450,2sleep122463-21timerwakeupswit11:38:111
224622450,2sleep122463-21timerwakeupswit11:38:111
280212420,2sleep028214-21grep11:53:110
280212420,2sleep028214-21grep11:53:110
19490994230,10cyclictest700-21192.168.115.40-manager09:16:351
19490994230,10cyclictest700-21192.168.115.40-manager09:16:351
19490994230,10cyclictest700-21192.168.115.40-manager09:16:351
105252420,3sleep30-21swapper/309:42:473
105252420,3sleep30-21swapper/309:42:473
105252420,3sleep30-21swapper/309:42:473
28112410,3sleep20-21swapper/207:53:082
19490994130,9cyclictest700-21192.168.115.40-manager09:44:581
19490994130,9cyclictest700-21192.168.115.40-manager09:44:581
19490994128,9cyclictest700-21192.168.115.40-manager10:07:251
19490994128,9cyclictest700-21192.168.115.40-manager10:07:251
19490994030,7cyclictest700-21192.168.115.40-manager12:20:271
19490994030,7cyclictest700-21192.168.115.40-manager12:20:271
19490994030,7cyclictest700-21192.168.115.40-manager12:20:271
85362390,3sleep20-21swapper/209:37:002
85362390,3sleep20-21swapper/209:37:002
8502390,2sleep0952-21mailstats07:48:080
8502390,2sleep0952-21mailstats07:48:080
19489993933,4cyclictest30366-21latency_hist07:42:480
19489993933,4cyclictest30366-21latency_hist07:42:480
15882390,1sleep1271rcuc/112:10:031
15882390,1sleep1271rcuc/112:10:031
15882390,1sleep1271rcuc/112:10:031
19490993829,8cyclictest700-21192.168.115.40-manager09:58:431
19490993829,8cyclictest700-21192.168.115.40-manager09:58:431
19490993827,9cyclictest700-21192.168.115.40-manager09:53:251
19490993827,9cyclictest700-21192.168.115.40-manager09:53:251
19490993813,10cyclictest31390-21needreboot12:03:041
19490993813,10cyclictest31390-21needreboot12:03:041
19490993813,10cyclictest31390-21needreboot12:03:041
1949099379,12cyclictest11754-21runrttasks11:12:251
1949099379,12cyclictest11754-21runrttasks11:12:251
1949099379,12cyclictest11754-21runrttasks11:12:251
19490993728,7cyclictest700-21192.168.115.40-manager10:18:441
19490993728,7cyclictest700-21192.168.115.40-manager10:18:441
19490993728,7cyclictest700-21192.168.115.40-manager10:18:441
19490993727,8cyclictest700-21192.168.115.40-manager10:29:551
19490993727,8cyclictest700-21192.168.115.40-manager10:29:551
19490993725,10cyclictest700-21192.168.115.40-manager10:23:251
19490993725,10cyclictest700-21192.168.115.40-manager10:23:251
19490993725,10cyclictest700-21192.168.115.40-manager10:23:251
19490993629,5cyclictest700-21192.168.115.40-manager09:25:391
19490993629,5cyclictest700-21192.168.115.40-manager09:25:391
19490993629,5cyclictest700-21192.168.115.40-manager09:25:391
19490993626,8cyclictest700-21192.168.115.40-manager09:36:391
19490993626,8cyclictest700-21192.168.115.40-manager09:36:391
19490993626,8cyclictest700-21192.168.115.40-manager07:40:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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