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2025-09-18 - 20:09

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #0

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 r0s0s.osadl.org (updated Thu Sep 18, 2025 12:46:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31516872301278,19sleep00-21swapper/007:08:020
31517402299278,13sleep60-21swapper/607:08:506
31517302295276,12sleep70-21swapper/707:08:427
31517652293257,27sleep40-21swapper/407:09:114
31517642291257,26sleep30-21swapper/307:09:103
31516802290255,27sleep20-21swapper/207:07:572
31515992290274,13sleep10-21swapper/107:06:511
31517842284264,13sleep50-21swapper/507:09:285
315230099380,5cyclictest53-21ksoftirqd/412:06:584
315230099374,1cyclictest0-21swapper/410:06:224
315230099370,4cyclictest53-21ksoftirqd/410:49:344
315230099363,1cyclictest171rcu_preempt11:00:264
315230099363,1cyclictest171rcu_preempt07:49:454
315230099363,1cyclictest171rcu_preempt07:37:504
315230099360,4cyclictest53-21ksoftirqd/408:44:094
315230099360,4cyclictest53-21ksoftirqd/408:44:094
3152300993534,1cyclictest296-21jbd2/sda1-808:13:514
315230099352,1cyclictest171rcu_preempt11:20:134
315230099352,0cyclictest171rcu_preempt10:34:404
315230099352,0cyclictest171rcu_preempt10:34:404
315230099351,3cyclictest53-21ksoftirqd/408:03:504
315230099350,3cyclictest53-21ksoftirqd/410:43:584
315230099350,3cyclictest53-21ksoftirqd/407:32:354
3152299993535,0cyclictest0-21swapper/312:32:133
315230099345,29cyclictest0-21swapper/408:31:174
315230099344,30cyclictest0-21swapper/411:27:584
315230099344,30cyclictest0-21swapper/409:45:524
315230099344,0cyclictest0-21swapper/412:35:424
315230099344,0cyclictest0-21swapper/411:40:564
315230099344,0cyclictest0-21swapper/410:59:164
315230099344,0cyclictest0-21swapper/408:58:014
315230099344,0cyclictest0-21swapper/408:49:264
3152300993433,1cyclictest0-21swapper/409:58:184
3152300993432,2cyclictest0-21swapper/407:24:544
315230099342,30cyclictest171rcu_preempt12:28:474
315230099342,30cyclictest171rcu_preempt12:28:464
315230099342,1cyclictest171rcu_preempt11:12:464
315230099342,0cyclictest171rcu_preempt10:52:004
315230099340,2cyclictest3157064-21runrttasks07:17:434
315230099340,1cyclictest53-21ksoftirqd/411:35:444
3152299993431,2cyclictest3177338-21cat08:00:153
3152302993330,3cyclictest833-21snmpd07:15:066
3152301993330,2cyclictest833-21snmpd11:31:355
3152301993330,2cyclictest833-21snmpd08:11:325
315230199330,32cyclictest0-21swapper/509:21:465
315230099334,29cyclictest0-21swapper/408:50:194
315230099334,0cyclictest0-21swapper/411:57:454
315230099334,0cyclictest0-21swapper/410:35:344
315230099334,0cyclictest0-21swapper/409:17:534
315230099334,0cyclictest0-21swapper/409:08:334
3152300993333,0cyclictest95-21kcompactd010:03:124
315230099333,30cyclictest0-21swapper/411:33:304
315230099333,30cyclictest0-21swapper/409:03:534
315230099333,30cyclictest0-21swapper/407:14:384
315230099333,0cyclictest0-21swapper/412:32:404
315230099333,0cyclictest0-21swapper/408:26:064
315230099332,0cyclictest171rcu_preempt12:10:384
315230099332,0cyclictest171rcu_preempt11:05:084
315230099332,0cyclictest171rcu_preempt10:21:094
315230099332,0cyclictest171rcu_preempt07:40:114
315230099331,1cyclictest171rcu_preempt10:11:424
315230099330,1cyclictest3114576-21kworker/4:0-events10:17:124
315230099330,1cyclictest171rcu_preempt09:11:334
315230099330,1cyclictest0-21swapper/408:06:194
315229999334,0cyclictest0-21swapper/311:52:483
315229999331,31cyclictest0-21swapper/311:45:063
3152303993230,2cyclictest833-21snmpd09:08:197
3152302993230,1cyclictest833-21snmpd11:20:146
3152302993230,1cyclictest833-21snmpd10:34:436
3152302993230,1cyclictest833-21snmpd10:34:426
3152301993229,2cyclictest833-21snmpd10:01:395
3152301993229,2cyclictest833-21snmpd07:43:475
315230199320,31cyclictest0-21swapper/509:34:255
315230199320,30cyclictest0-21swapper/508:46:455
315230199320,29cyclictest0-21swapper/512:09:345
315230199320,29cyclictest0-21swapper/509:19:555
315230099323,0cyclictest0-21swapper/407:59:354
315230099322,30cyclictest0-21swapper/409:38:394
315230099322,30cyclictest0-21swapper/408:16:134
315230099322,1cyclictest521ktimers/408:23:334
315230099322,0cyclictest0-21swapper/411:47:184
315230099322,0cyclictest0-21swapper/411:17:304
315230099322,0cyclictest0-21swapper/410:28:404
315230099322,0cyclictest0-21swapper/409:25:044
315229999323,0cyclictest0-21swapper/309:09:133
3152299993230,2cyclictest833-21snmpd10:29:363
315229999322,0cyclictest0-21swapper/311:19:253
315229999321,2cyclictest441ktimers/308:32:033
3152298993229,2cyclictest833-21snmpd10:55:042
3152298993229,2cyclictest833-21snmpd09:22:432
3152298993228,3cyclictest833-21snmpd09:18:042
3152297993230,1cyclictest833-21snmpd07:29:301
3152297993229,2cyclictest833-21snmpd07:16:541
315229799320,31cyclictest0-21swapper/109:42:321
3152296993230,2cyclictest833-21snmpd12:38:540
3152296993230,2cyclictest833-21snmpd12:25:370
3152296993230,2cyclictest833-21snmpd12:25:370
3152296993230,2cyclictest833-21snmpd11:35:110
3152296993230,2cyclictest833-21snmpd11:09:200
3152296993230,2cyclictest833-21snmpd07:55:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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