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2025-12-28 - 08:57

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 Sun Dec 28, 2025 00:44:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1967021240,1sleep119669-21uptime20:25:411
1967021240,1sleep119669-21uptime20:25:411
4852800,1sleep129-21ksoftirqd/122:30:271
4852800,1sleep129-21ksoftirqd/122:30:271
34802690,4sleep13485-21unixbench_multi22:35:381
34802690,4sleep13485-21unixbench_multi22:35:381
34802690,4sleep13485-21unixbench_multi22:35:381
47512660,3sleep14734-21unixbench-2d00:05:391
47512660,3sleep14734-21unixbench-2d00:05:391
259662610,3sleep30-21swapper/323:35:383
259662610,3sleep30-21swapper/323:35:383
259662610,3sleep30-21swapper/323:35:383
42542600,2sleep30-21swapper/300:05:333
42542600,2sleep30-21swapper/300:05:333
239802580,2chrt0-21swapper/120:40:241
239802580,2chrt0-21swapper/120:40:241
298532570,2sleep30-21swapper/320:55:303
298532570,2sleep30-21swapper/320:55:303
298532570,2sleep30-21swapper/320:55:303
303662530,3chrt0-21swapper/323:50:263
326392500,2sleep132642-21sed21:00:381
30172500,2sleep11537-40mandb00:00:451
69732440,3sleep30-21swapper/300:13:453
69732440,3sleep30-21swapper/300:13:453
274982430,3sleep30-21swapper/319:20:383
274982430,3sleep30-21swapper/319:20:383
154982430,3sleep30-21swapper/323:10:253
154982430,3sleep30-21swapper/323:10:253
22731994222,15cyclictest36250irq/47-eth000:00:200
22731994222,15cyclictest36250irq/47-eth000:00:200
22732994133,6cyclictest550-21cron19:55:151
22732994133,6cyclictest550-21cron19:55:151
247052370,2sleep00-21swapper/019:15:290
2273199373,10cyclictest2324-21memory00:00:320
22731993726,8cyclictest23256-21latency_hist22:05:160
22732993629,5cyclictest16443-21latency_hist00:40:151
22732993629,5cyclictest16443-21latency_hist00:40:151
22732993529,4cyclictest26381-21latency_hist23:40:151
22732993529,4cyclictest26381-21latency_hist23:40:151
22732993529,4cyclictest26381-21latency_hist23:40:151
22732993527,6cyclictest5426-21netstat21:15:321
22732993527,6cyclictest5426-21netstat21:15:321
22732993526,7cyclictest16963-21threads21:45:391
22732993526,7cyclictest16963-21threads21:45:391
22731993525,8cyclictest29025-21needreboot19:25:320
212072340,2sleep129-21ksoftirqd/120:30:391
212072340,2sleep129-21ksoftirqd/120:30:391
307412330,3sleep30-21swapper/322:25:153
307412330,3sleep30-21swapper/322:25:153
287672330,3sleep30-21swapper/323:45:313
287672330,3sleep30-21swapper/323:45:313
22732993328,3cyclictest0-21swapper/119:50:151
22732993327,4cyclictest32520-21if_eth019:35:291
22732993327,4cyclictest32520-21if_eth019:35:291
22731993324,7cyclictest7584-21fschecks_time00:15:280
22731993324,7cyclictest7584-21fschecks_time00:15:280
22731993324,7cyclictest7584-21fschecks_time00:15:280
22732993226,4cyclictest572-21cups-browsed22:15:371
22732993226,4cyclictest572-21cups-browsed22:15:371
22732993225,5cyclictest7202-21unixbench-2d22:45:361
22732993224,6cyclictest4390-21kworker/u9:0-xprtiod21:25:151
22732993224,6cyclictest4390-21kworker/u9:0-xprtiod21:25:151
22732993221,8cyclictest3371-21latency_hist19:45:211
22732993221,8cyclictest3371-21latency_hist19:45:211
22731993224,6cyclictest7701-21latency_hist22:50:150
112112320,3sleep10-21swapper/122:57:371
112112320,3sleep10-21swapper/122:57:371
112112320,3sleep10-21swapper/122:57:371
2273399312,18cyclictest1620-21chrt00:00:222
2273399312,18cyclictest1620-21chrt00:00:222
22732993126,4cyclictest22730-21cyclictest00:00:181
22732993126,4cyclictest22730-21cyclictest00:00:181
22732993125,5cyclictest22023-21threads23:25:391
22732993125,5cyclictest22023-21threads23:25:391
22732993124,5cyclictest30860-21latency_hist22:25:211
22732993124,5cyclictest30860-21latency_hist22:25:211
22731993127,3cyclictest15941-21sed00:35:400
22731993127,3cyclictest15941-21sed00:35:400
22731993127,3cyclictest10994-21cpuspeed20:05:290
22731993127,3cyclictest10994-21cpuspeed20:05:290
22731993124,5cyclictest12883-21unixbench_singl23:00:370
22731993124,5cyclictest12883-21unixbench_singl23:00:370
22732993023,5cyclictest31280-21latency_hist21:00:151
22732993023,5cyclictest31280-21latency_hist21:00:151
22732993023,5cyclictest31280-21latency_hist21:00:151
22731993024,4cyclictest25215-21kworker/u10:1-rpciod19:50:290
22731993024,4cyclictest25215-21kworker/u10:1-rpciod19:50:290
22731993023,5cyclictest18910-21sendmail23:20:150
22731993023,5cyclictest18910-21sendmail23:20:150
22732992923,4cyclictest7971-21needreboot00:15:321
22732992923,4cyclictest7971-21needreboot00:15:321
22732992923,4cyclictest7971-21needreboot00:15:321
22732992923,3cyclictest0-21swapper/123:40:291
22732992923,3cyclictest0-21swapper/123:40:291
22731992922,6cyclictest4931-21ntp_offset22:40:350
22731992922,6cyclictest4931-21ntp_offset22:40:350
22731992922,5cyclictest2630-21latency_hist21:10:150
22731992922,5cyclictest2630-21latency_hist21:10:150
22731992921,6cyclictest9955-21fschecks_count22:55:280
22731992921,6cyclictest9955-21fschecks_count22:55:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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