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2026-07-15 - 13:14

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 Wed Jul 15, 2026 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
164132960,3sleep20-21swapper/200:43:212
164132960,3sleep20-21swapper/200:43:212
318892890,1sleep00-21swapper/019:38:270
318892890,1sleep00-21swapper/019:38:270
226332860,1sleep00-21swapper/023:33:240
226332860,1sleep00-21swapper/023:33:240
226332860,1sleep00-21swapper/023:33:240
80892690,2sleep30-21swapper/319:58:443
80892690,2sleep30-21swapper/319:58:443
38732670,2sleep13877-21wc19:48:371
38732670,2sleep13877-21wc19:48:371
311782640,2sleep20-21swapper/221:03:202
311782640,2sleep20-21swapper/221:03:202
140382590,3chrt0-21swapper/321:43:323
94552570,2sleep114678-21systemd-journal22:58:211
94552570,2sleep114678-21systemd-journal22:58:211
96642500,2sleep30-21swapper/321:28:453
96642500,2sleep30-21swapper/321:28:453
96642500,2sleep30-21swapper/321:28:453
312032480,2chrt0-21swapper/321:03:203
312032480,2chrt0-21swapper/321:03:203
296182460,2chrt0-21swapper/023:48:440
296182460,2chrt0-21swapper/023:48:440
22851993629,5cyclictest4022-21netstat19:48:390
22851993629,5cyclictest4022-21netstat19:48:390
22851993525,8cyclictest0-21swapper/000:03:210
22851993525,8cyclictest0-21swapper/000:03:210
22851993317,13cyclictest0-21swapper/023:08:340
22851993317,13cyclictest0-21swapper/023:08:340
147212330,2sleep00-21swapper/000:38:340
22853993227,4cyclictest18117-21gltestperf21:53:351
22853993227,4cyclictest18117-21gltestperf21:53:351
22853993227,4cyclictest18117-21gltestperf21:53:351
22853993227,3cyclictest0-21swapper/121:50:501
22853993227,3cyclictest0-21swapper/121:50:501
22853993227,3cyclictest0-21swapper/100:03:351
22853993227,3cyclictest0-21swapper/100:03:351
22853993216,2cyclictest181rcu_preempt20:21:211
22853993216,2cyclictest181rcu_preempt20:21:211
22851993225,5cyclictest25156-21kernelversion23:38:370
22851993225,5cyclictest25156-21kernelversion23:38:370
22853993127,2cyclictest0-21swapper/123:38:211
22853993127,2cyclictest0-21swapper/123:38:211
22853993127,2cyclictest0-21swapper/123:38:211
22853993127,2cyclictest0-21swapper/123:38:211
22853993126,4cyclictest12631-21cron00:33:211
22853993126,4cyclictest12631-21cron00:33:211
22853993126,4cyclictest12631-21cron00:33:211
22853993125,4cyclictest8408-21cpu21:28:321
22853993125,4cyclictest8408-21cpu21:28:321
22853993122,3cyclictest181rcu_preempt19:48:211
22853993122,3cyclictest181rcu_preempt19:48:211
22851993126,4cyclictest572-21cups-browsed20:43:430
22851993126,4cyclictest572-21cups-browsed20:43:430
22851993126,3cyclictest3361-21missed_timers21:13:370
22851993126,3cyclictest3361-21missed_timers21:13:370
22851993126,3cyclictest3361-21missed_timers21:13:370
22851993125,5cyclictest1407-40mandb00:03:480
22851993125,5cyclictest1407-40mandb00:03:480
22851993125,4cyclictest28757-21latency_hist22:23:320
22851993125,4cyclictest28757-21latency_hist22:23:320
22851993125,4cyclictest14079-21unixbench_multi00:33:440
22851993125,4cyclictest13812-21latency_hist21:43:210
22851993125,4cyclictest13812-21latency_hist21:43:210
22851993125,4cyclictest13812-21latency_hist21:43:210
22851993124,5cyclictest19992-21grep20:33:210
22851993124,5cyclictest19992-21grep20:33:210
22851993124,5cyclictest19992-21grep20:33:210
22851993124,5cyclictest16956-21latency_hist23:18:210
22851993124,5cyclictest16956-21latency_hist23:18:210
22851993124,5cyclictest16956-21latency_hist23:18:210
22851993124,5cyclictest1543-21latency_hist19:43:320
22851993124,5cyclictest1543-21latency_hist19:43:320
22851993124,5cyclictest1543-21latency_hist19:43:320
22851993123,6cyclictest10178-21kernelversion22:58:370
22851993123,6cyclictest10178-21kernelversion22:58:370
94602300,2sleep20-21swapper/222:58:212
94602300,2sleep20-21swapper/222:58:212
2285499301,18cyclictest1460-21chrt00:03:252
2285499301,18cyclictest1460-21chrt00:03:252
22853993023,4cyclictest0-21swapper/123:23:211
22853993023,4cyclictest0-21swapper/123:23:211
22853993023,4cyclictest0-21swapper/123:23:211
22853993022,6cyclictest13805-21gltestperf23:08:351
22853993021,7cyclictest7302-21cut19:58:341
22853993021,7cyclictest7302-21cut19:58:341
22853993017,2cyclictest181rcu_preempt23:10:561
22853993017,2cyclictest181rcu_preempt23:10:561
22853993017,2cyclictest181rcu_preempt23:10:561
22853993016,2cyclictest181rcu_preempt23:45:151
22853993016,2cyclictest181rcu_preempt23:45:151
22853993012,6cyclictest0-21swapper/122:29:521
22853993012,6cyclictest0-21swapper/122:29:521
22853993012,6cyclictest0-21swapper/122:29:521
22851993026,3cyclictest11500-21tail20:08:370
22851993026,3cyclictest11500-21tail20:08:370
22851993023,5cyclictest997-21fschecks_count21:08:340
22851993023,5cyclictest997-21fschecks_count21:08:340
22851993023,5cyclictest550-21cron23:23:380
22851993023,5cyclictest550-21cron23:23:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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