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2025-12-19 - 21:57

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 Fri Dec 19, 2025 12:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14102870,3sleep00-21swapper/011:00:230
14102870,3sleep00-21swapper/011:00:230
323212790,5sleep032322-21cron08:05:070
323212790,5sleep032322-21cron08:05:070
96382730,4sleep09637-21head09:55:220
96382730,4sleep09637-21head09:55:220
96382730,4sleep09637-21head09:55:220
128562730,2chrt0-21swapper/010:05:190
128562730,2chrt0-21swapper/010:05:190
313602700,1chrt0-21swapper/012:20:230
313602700,1chrt0-21swapper/012:20:230
300402660,1sleep00-21swapper/010:50:210
300402660,1sleep00-21swapper/010:50:210
21172640,3chrt0-21swapper/312:30:153
21172640,3chrt0-21swapper/312:30:153
96472620,1sleep19698-21ntp_kernel_pll_09:55:241
96472620,1sleep19698-21ntp_kernel_pll_09:55:241
96472620,1sleep19698-21ntp_kernel_pll_09:55:241
287792600,3sleep20-21swapper/209:20:222
287792600,3sleep20-21swapper/209:20:222
140952580,3chrt0-21swapper/308:40:273
140952580,3chrt0-21swapper/308:40:273
42862550,2chrt0-21swapper/311:08:183
324692550,3sleep20-21swapper/208:05:132
324692550,3sleep20-21swapper/208:05:132
87432510,3sleep30-21swapper/308:25:283
87432510,3sleep30-21swapper/308:25:283
29192500,2chrt0-21swapper/308:10:283
29192500,2chrt0-21swapper/308:10:283
241182460,2sleep20-21swapper/212:00:282
65362450,3sleep30-21swapper/311:15:173
65362450,3sleep30-21swapper/311:15:173
229492420,2sleep022953-21wc10:30:280
229492420,2sleep022953-21wc10:30:280
12089994131,8cyclictest22180-21netstat11:55:260
12089994131,8cyclictest22180-21netstat11:55:260
12089994131,8cyclictest22180-21netstat11:55:260
164072400,3sleep30-21swapper/307:20:233
164072400,3sleep30-21swapper/307:20:233
325222380,3sleep30-21swapper/312:25:083
325222380,3sleep30-21swapper/312:25:083
118802380,3sleep30-21swapper/310:00:273
257272370,4sleep30-21swapper/309:10:303
257272370,4sleep30-21swapper/309:10:303
12089993728,7cyclictest18700-21tail10:20:200
12089993728,7cyclictest18700-21tail10:20:200
214892360,3sleep00-21swapper/007:35:200
214892360,3sleep00-21swapper/007:35:200
12089993630,4cyclictest3155-21sendmail09:40:070
12089993630,4cyclictest3155-21sendmail09:40:070
207482350,2sleep20-21swapper/209:00:162
207482350,2sleep20-21swapper/209:00:162
207482350,2sleep20-21swapper/209:00:162
12090993528,5cyclictest10221-21netstat08:30:241
12090993528,5cyclictest10221-21netstat08:30:241
314142340,3sleep30-21swapper/309:25:303
314142340,3sleep30-21swapper/309:25:303
186822340,3sleep30-21swapper/311:45:293
1209299341,28cyclictest2833-21chrt09:36:073
1209299341,28cyclictest2833-21chrt09:36:073
316912330,1sleep131784-21/usr/sbin/munin12:20:291
316912330,1sleep131784-21/usr/sbin/munin12:20:291
211192330,3sleep20-21swapper/209:00:202
211192330,3sleep20-21swapper/209:00:202
1209299331,27cyclictest24836-21chrt12:03:053
1209299331,26cyclictest22212-21chrt09:02:183
1209299331,26cyclictest22212-21chrt09:02:183
12090993325,6cyclictest16591-21netstat11:40:261
12090993325,6cyclictest16591-21netstat11:40:261
12089993325,6cyclictest1-21systemd08:59:100
12089993325,6cyclictest1-21systemd08:59:100
12089993325,6cyclictest1-21systemd08:59:100
12089993320,2cyclictest181rcu_preempt11:25:230
12089993320,2cyclictest181rcu_preempt11:25:230
244302320,4chrt0-21swapper/310:35:213
244302320,4chrt0-21swapper/310:35:213
1209299321,26cyclictest26694-21chrt07:49:543
1209299321,26cyclictest26694-21chrt07:49:543
1209299321,26cyclictest22624-21chrt07:35:433
1209299321,26cyclictest22624-21chrt07:35:433
1209299321,26cyclictest18528-21chrt08:53:103
1209299321,26cyclictest18528-21chrt08:53:103
1209299321,26cyclictest1634-21chrt08:07:553
1209299321,26cyclictest1634-21chrt08:07:553
1209299321,26cyclictest15582-21chrt11:39:253
1209299321,26cyclictest15582-21chrt11:39:253
1209299321,26cyclictest15582-21chrt11:39:253
1209299320,27cyclictest2425-21chrt11:03:193
1209299320,27cyclictest2425-21chrt11:03:193
1209299320,26cyclictest9731-21chrt11:21:083
1209299320,26cyclictest9731-21chrt11:21:083
1209299320,26cyclictest9731-21chrt11:21:083
12090993225,5cyclictest441-21fschecks_time12:25:181
12090993225,5cyclictest441-21fschecks_time12:25:181
12090993223,7cyclictest550-21cron12:00:081
12090993223,7cyclictest550-21cron12:00:081
12090993223,7cyclictest550-21cron12:00:081
1208999326,5cyclictest171ktimers/011:30:570
1208999326,5cyclictest171ktimers/011:30:570
12089993223,7cyclictest19596-21latency_hist11:50:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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