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2026-04-11 - 17:12

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 Sat Apr 11, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
225629911751125,39cyclictest23246-21idleruntime07:25:190
225639910901079,8cyclictest0-21swapper/107:25:171
224702538487,31sleep10-21swapper/107:24:381
224512467370,29sleep00-21swapper/007:24:240
751521320,6sleep02256299cyclictest09:52:040
319821130,5sleep13156-21fschecks_time12:35:171
86772730,5sleep0111rcuc/012:40:270
4232570,8sleep02256299cyclictest11:59:260
22562995023,11cyclictest3-21ksoftirqd/010:23:360
22562994823,13cyclictest3-21ksoftirqd/011:49:120
131042450,7sleep12256399cyclictest12:11:361
22562994423,5cyclictest3-21ksoftirqd/009:22:310
22562994323,4cyclictest3-21ksoftirqd/012:03:010
22562994322,5cyclictest3-21ksoftirqd/010:08:180
154442430,4sleep1211ktimersoftd/110:34:261
22562994224,8cyclictest3-21ksoftirqd/011:53:060
22562994224,8cyclictest3-21ksoftirqd/009:41:490
22562994125,5cyclictest3-21ksoftirqd/011:05:390
22562994122,4cyclictest3-21ksoftirqd/010:55:070
2256299411,11cyclictest0-21swapper/011:11:560
156402411,4sleep015652-21rm10:34:440
2256399405,32cyclictest0-21swapper/110:46:561
2256399401,12cyclictest31688-21ssh09:44:151
22562994024,5cyclictest3-21ksoftirqd/011:18:590
22562994024,5cyclictest3-21ksoftirqd/009:49:030
22562994023,5cyclictest3-21ksoftirqd/012:18:220
22562994022,6cyclictest3-21ksoftirqd/012:46:240
2256299401,35cyclictest0-21swapper/012:50:360
6252397,5sleep0636-21ssh10:19:090
2256399396,29cyclictest0-21swapper/110:02:161
2256399393,33cyclictest16016-21sh11:40:581
22563993917,15cyclictest2214-21iostat_ios10:20:201
22562993924,5cyclictest3-21ksoftirqd/010:48:270
22562993924,5cyclictest3-21ksoftirqd/010:37:400
22562993924,5cyclictest3-21ksoftirqd/009:25:470
22562993924,5cyclictest3-21ksoftirqd/009:17:500
22562993923,5cyclictest3-21ksoftirqd/007:54:590
22562993922,6cyclictest3-21ksoftirqd/008:22:400
22562993922,5cyclictest3-21ksoftirqd/011:00:210
22562993918,5cyclictest3-21ksoftirqd/009:55:360
22562993915,4cyclictest0-21swapper/011:36:010
2256399381,7cyclictest30241-21ssh11:55:361
2256299384,5cyclictest0-21swapper/011:43:560
22562993823,5cyclictest3-21ksoftirqd/009:37:140
279492370,3sleep0111rcuc/009:00:270
22563993728,5cyclictest4883-21df11:30:151
2256399371,6cyclictest7946-21ssh12:40:151
2256399371,5cyclictest27021-21ssh11:52:551
2256299373,8cyclictest0-21swapper/012:36:000
22562993722,5cyclictest3-21ksoftirqd/010:13:130
22562993722,5cyclictest3-21ksoftirqd/009:14:580
22562993722,5cyclictest3-21ksoftirqd/009:06:030
2256299372,18cyclictest0-21swapper/009:34:420
22562993721,5cyclictest3-21ksoftirqd/012:07:490
22562993719,6cyclictest3-21ksoftirqd/012:13:320
2256399363,31cyclictest0-21swapper/108:38:351
2256399363,30cyclictest0-21swapper/112:08:151
22563993624,9cyclictest22-21ksoftirqd/111:50:001
2256399361,31cyclictest0-21swapper/109:46:561
22562993622,4cyclictest3-21ksoftirqd/011:29:020
58962351,30sleep15934-21ntp_states09:50:261
2256399352,4cyclictest0-21swapper/110:50:561
22562993519,6cyclictest3-21ksoftirqd/007:59:070
22562993519,5cyclictest3-21ksoftirqd/008:56:110
117642351,4sleep111778-21ssh09:56:151
260722341,4sleep026165-21memory12:25:210
2256399344,4cyclictest81rcu_preempt09:27:501
22563993427,5cyclictest0-21swapper/107:30:361
2256399342,28cyclictest0-21swapper/110:12:551
2256399342,28cyclictest0-21swapper/109:12:151
2256399341,4cyclictest81rcu_preempt12:45:161
2256399341,15cyclictest146092grep08:25:211
22563993410,4cyclictest81rcu_preempt11:15:141
2256299342,28cyclictest8221-21ssh10:25:550
22562993418,5cyclictest3-21ksoftirqd/012:21:560
22562993417,6cyclictest3-21ksoftirqd/008:11:150
2256299341,30cyclictest0-21swapper/008:40:350
22562993410,5cyclictest13035-1kworker/0:0H11:30:160
154742340,2sleep015472-21missed_timers10:00:230
59642331,5sleep10-21swapper/109:17:051
287482331,4sleep128716-21apt-get07:38:261
2256399334,4cyclictest81rcu_preempt10:41:441
2256399333,4cyclictest81rcu_preempt12:23:441
2256399331,4cyclictest0-21swapper/112:30:151
22563993313,16cyclictest22-21ksoftirqd/112:02:001
2256399331,30cyclictest0-21swapper/108:47:551
22562993318,5cyclictest3-21ksoftirqd/008:32:160
22562993317,6cyclictest3-21ksoftirqd/008:03:550
92082320,4sleep1211ktimersoftd/108:10:281
2256399325,4cyclictest81rcu_preempt08:51:311
2256399324,4cyclictest81rcu_preempt09:22:201
2256399323,5cyclictest81rcu_preempt09:31:471
2256399323,4cyclictest81rcu_preempt10:57:091
2256399322,4cyclictest81rcu_preempt10:06:591
22563993224,6cyclictest0-21swapper/108:01:161
2256399321,5cyclictest0-21swapper/109:36:561
2256399321,4cyclictest81rcu_preempt11:24:251
2256399321,4cyclictest81rcu_preempt11:10:291
2256399321,4cyclictest81rcu_preempt10:26:261
2256399321,28cyclictest0-21swapper/108:15:361
22562993217,5cyclictest3-21ksoftirqd/007:37:580
22562993216,5cyclictest3-21ksoftirqd/007:48:350
22562993213,5cyclictest3-21ksoftirqd/010:53:030
2256299321,29cyclictest0-21swapper/008:48:150
302882311,4sleep12403-21irqbalance09:06:461
2256399311,8cyclictest31981-21ssh10:17:311
2256399311,6cyclictest0-21swapper/111:09:351
2256399311,4cyclictest81rcu_preempt12:27:481
2256399311,4cyclictest81rcu_preempt11:01:411
2256399311,4cyclictest1968-21lldpad11:36:221
2256399311,28cyclictest0-21swapper/107:46:551
2256399310,4cyclictest81rcu_preempt07:55:581
2256299319,7cyclictest2206-21dbus-daemon08:07:360
22562993117,4cyclictest3-21ksoftirqd/010:45:010
2256399307,5cyclictest40550irq/92-i91512:50:111
2256399305,4cyclictest81rcu_preempt12:15:151
2256399304,4cyclictest81rcu_preempt11:27:361
2256399301,4cyclictest81rcu_preempt10:36:331
303862290,4sleep02256299cyclictest07:40:280
2256399294,18cyclictest27313-21diskstats09:00:151
2256399294,17cyclictest25808-21memory08:55:211
2256399293,5cyclictest170492watchsnmpd08:31:001
2256299298,4cyclictest27578-21df11:20:150
2256299295,12cyclictest0-21swapper/012:30:180
22562992915,5cyclictest3-21ksoftirqd/008:38:430
2256299291,26cyclictest0-21swapper/008:50:560
116392291,5sleep00-21swapper/008:18:320
22563992813,11cyclictest916-21fschecks_count07:50:171
2256299281,13cyclictest13896-21aten_r4power_en08:25:100
2256399277,7cyclictest13014-21switchtime08:20:291
2256399272,4cyclictest81rcu_preempt07:41:161
2256299274,7cyclictest25543-21diskstats07:30:150
208842271,5sleep10-21swapper/108:41:441
2256399262,10cyclictest0-21swapper/108:05:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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