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2026-06-04 - 10:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 highest latencies:
System rack9slot4s (updated Thu Jun 04, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
54309911811172,6cyclictest0-21swapper/119:25:221
54299911331101,28cyclictest0-21swapper/019:25:170
51172723678,29sleep10-21swapper/119:22:161
49682617571,30sleep00-21swapper/019:20:440
133752810,7sleep0542999cyclictest23:15:130
5430995115,6cyclictest22-21ksoftirqd/123:25:101
5430994917,6cyclictest22-21ksoftirqd/100:30:301
5430994915,6cyclictest22-21ksoftirqd/120:51:361
5430994915,5cyclictest22-21ksoftirqd/121:20:091
5430994915,5cyclictest22-21ksoftirqd/100:15:271
5430994816,6cyclictest22-21ksoftirqd/100:35:201
216902470,5sleep0111rcuc/022:10:220
5430994525,9cyclictest22-21ksoftirqd/121:35:191
5430994523,8cyclictest22-21ksoftirqd/100:40:281
5430994516,6cyclictest22-21ksoftirqd/100:20:181
5430994516,6cyclictest22-21ksoftirqd/100:20:171
5430994515,5cyclictest22-21ksoftirqd/122:30:291
5430994510,6cyclictest3286-21runrttasks22:20:161
5430994429,4cyclictest22-21ksoftirqd/122:45:281
5430994425,5cyclictest22-21ksoftirqd/121:50:011
5430994416,6cyclictest22-21ksoftirqd/123:40:271
5430994415,6cyclictest22-21ksoftirqd/121:30:241
5430994415,5cyclictest22-21ksoftirqd/123:55:101
5430994414,5cyclictest22-21ksoftirqd/122:00:321
5430994414,5cyclictest22-21ksoftirqd/121:17:351
5430994414,10cyclictest22-21ksoftirqd/122:25:161
5430994325,4cyclictest22-21ksoftirqd/119:40:071
5430994324,9cyclictest22-21ksoftirqd/123:40:001
5430994323,4cyclictest22-21ksoftirqd/122:50:231
5430994321,4cyclictest22-21ksoftirqd/121:00:081
5430994314,7cyclictest22-21ksoftirqd/122:40:171
5430994313,5cyclictest22-21ksoftirqd/123:50:221
543099428,6cyclictest22-21ksoftirqd/123:20:181
543099428,6cyclictest22-21ksoftirqd/120:20:141
5430994221,4cyclictest22-21ksoftirqd/122:35:091
5430994215,10cyclictest22-21ksoftirqd/121:10:251
543099419,5cyclictest22-21ksoftirqd/123:45:151
543099418,6cyclictest22-21ksoftirqd/119:36:331
543099416,6cyclictest22-21ksoftirqd/120:40:221
5430994127,4cyclictest22-21ksoftirqd/119:35:001
5430994124,4cyclictest22-21ksoftirqd/123:15:111
5430994123,4cyclictest22-21ksoftirqd/122:10:171
5430994123,4cyclictest22-21ksoftirqd/122:05:121
5430994123,4cyclictest22-21ksoftirqd/120:10:081
5430994122,4cyclictest22-21ksoftirqd/123:00:141
5430994122,4cyclictest22-21ksoftirqd/122:55:121
5430994122,4cyclictest22-21ksoftirqd/121:40:091
5430994122,4cyclictest22-21ksoftirqd/121:25:111
543099411,5cyclictest22-21ksoftirqd/100:00:111
543099407,6cyclictest22-21ksoftirqd/120:06:531
543099407,6cyclictest22-21ksoftirqd/119:47:411
5430994026,4cyclictest22-21ksoftirqd/123:10:151
5430994026,4cyclictest22-21ksoftirqd/121:10:011
5430994026,4cyclictest22-21ksoftirqd/120:30:091
5430994026,4cyclictest22-21ksoftirqd/100:45:131
5430994025,4cyclictest22-21ksoftirqd/120:55:371
5430994025,4cyclictest22-21ksoftirqd/120:26:141
5430994025,4cyclictest22-21ksoftirqd/100:10:101
5430994024,4cyclictest22-21ksoftirqd/123:05:251
5430994024,4cyclictest22-21ksoftirqd/121:55:121
5430994024,4cyclictest22-21ksoftirqd/100:05:161
5430994023,4cyclictest22-21ksoftirqd/121:50:121
5430994022,4cyclictest22-21ksoftirqd/100:50:221
5430994020,10cyclictest22-21ksoftirqd/120:05:001
5430994014,4cyclictest22-21ksoftirqd/122:19:551
5430994010,4cyclictest2225-21dbus-daemon23:30:511
5430993925,4cyclictest22-21ksoftirqd/120:36:491
5430993925,4cyclictest22-21ksoftirqd/119:58:211
5430993925,4cyclictest22-21ksoftirqd/119:50:091
5430993925,4cyclictest22-21ksoftirqd/119:50:081
5430993924,4cyclictest22-21ksoftirqd/120:45:521
5430993921,5cyclictest22-21ksoftirqd/100:25:191
5430993921,4cyclictest22-21ksoftirqd/120:17:211
37872390,3sleep0111rcuc/021:24:000
5429993815,11cyclictest3-21ksoftirqd/023:55:210
5429993715,11cyclictest3-21ksoftirqd/020:50:250
542999341,7cyclictest2695-21snmpd23:46:000
5429993414,10cyclictest3-21ksoftirqd/000:20:130
5429993414,10cyclictest3-21ksoftirqd/000:20:120
542999341,11cyclictest0-21swapper/000:18:170
542999334,8cyclictest8124-21kworker/0:222:45:160
542999332,10cyclictest81rcu_preempt21:10:250
5429993311,7cyclictest22204-21df20:30:090
542999323,4cyclictest81rcu_preempt00:25:260
5429993213,6cyclictest5076-21switchtime21:25:270
5429993211,7cyclictest30828-21fschecks_time22:35:150
542999314,13cyclictest0-21swapper/023:50:250
542999313,3cyclictest81rcu_preempt23:20:210
542999312,4cyclictest81rcu_preempt22:02:100
542999312,16cyclictest0-21swapper/022:50:180
5429993116,4cyclictest3-21ksoftirqd/021:30:100
542999311,4cyclictest81rcu_preempt00:30:120
254532311,4sleep025520-21timerandwakeup20:40:230
542999306,12cyclictest81rcu_preempt20:40:000
542999304,16cyclictest81rcu_preempt19:44:110
542999304,10cyclictest0-21swapper/020:48:260
542999301,9cyclictest0-21swapper/022:15:270
5429993016,4cyclictest3-21ksoftirqd/000:05:210
542999301,4cyclictest81rcu_preempt22:21:000
542999301,4cyclictest81rcu_preempt21:40:150
542999301,4cyclictest81rcu_preempt20:20:240
542999301,15cyclictest23159-21latency23:40:200
542999301,15cyclictest1685-21seq21:18:000
542999301,10cyclictest81rcu_preempt23:25:230
542999294,18cyclictest31046-21python00:00:260
5429992922,4cyclictest28337-21cron22:30:000
542999292,15cyclictest11565-21gdbus23:09:400
5429992915,4cyclictest3-21ksoftirqd/023:35:180
5429992913,4cyclictest8849-21switchtime21:35:280
191522291,5sleep00-21swapper/020:19:060
159062291,5sleep00-21swapper/020:02:580
130602291,5sleep00-21swapper/000:40:150
71642281,5sleep00-21swapper/022:58:500
542999289,6cyclictest823-21python22:40:260
542999287,18cyclictest0-21swapper/019:35:080
542999282,13cyclictest11450-21iostat00:35:180
5429992814,4cyclictest3-21ksoftirqd/023:00:180
5429992814,4cyclictest3-21ksoftirqd/019:50:060
5429992814,4cyclictest3-21ksoftirqd/019:50:060
5429992813,5cyclictest3-21ksoftirqd/022:05:120
5429992812,4cyclictest3-21ksoftirqd/021:45:100
5429992810,5cyclictest6819-21timerandwakeup19:30:060
31272281,5sleep00-21swapper/000:14:500
140482281,5sleep00-21swapper/019:58:190
542999271,17cyclictest0-21swapper/020:10:380
542999271,13cyclictest29641-21timerwakeupswit22:30:280
542999271,13cyclictest2401-21NetworkManager20:55:150
542999271,13cyclictest19191-21fschecks_time23:30:150
5429992710,6cyclictest16119-21taskset00:47:190
5429992710,5cyclictest11624-21taskset19:49:080
316172271,5sleep00-21swapper/021:07:580
165312271,5sleep00-21swapper/000:50:040
542999269,5cyclictest81rcu_preempt20:10:000
542999269,4cyclictest16411-21/usr/sbin/munin21:55:280
542999261,4cyclictest81rcu_preempt20:27:090
5429992612,4cyclictest3-21ksoftirqd/021:50:110
5429992610,4cyclictest3-21ksoftirqd/021:00:110
542999260,4cyclictest81rcu_preempt23:13:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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