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2026-04-27 - 09:54

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 Mon Apr 27, 2026 00:59:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
61759911931146,42cyclictest6603-21df19:25:130
61769911871152,31cyclictest0-21swapper/119:25:131
61769911151094,17cyclictest19777-21ssh21:15:201
60762560508,37sleep10-21swapper/119:24:331
57852555507,32sleep00-21swapper/019:21:290
617599229202,7cyclictest19778-21sh21:15:200
2372521020,26sleep00-21swapper/000:06:080
288822780,4sleep1201rcuc/121:25:111
117412750,4sleep1201rcuc/100:27:351
617699595,5cyclictest22-21ksoftirqd/122:20:001
617699497,6cyclictest22-21ksoftirqd/121:36:441
617699496,6cyclictest22-21ksoftirqd/122:22:431
617699496,6cyclictest22-21ksoftirqd/121:23:391
617699486,6cyclictest22-21ksoftirqd/100:41:081
617699482,5cyclictest19554-21ps00:35:271
617699481,10cyclictest22-21ksoftirqd/121:57:121
617699479,5cyclictest1384-21users00:50:311
617699478,11cyclictest22276-21aten_r4power_vo22:25:121
617699475,14cyclictest22-21ksoftirqd/123:37:031
617699466,6cyclictest22-21ksoftirqd/100:24:551
617699466,5cyclictest22-21ksoftirqd/100:45:521
617699466,5cyclictest22-21ksoftirqd/100:07:181
617699465,18cyclictest22-21ksoftirqd/122:04:531
617699464,5cyclictest22-21ksoftirqd/123:07:111
617699455,6cyclictest22-21ksoftirqd/122:49:381
617699453,6cyclictest22-21ksoftirqd/123:17:391
6176994516,5cyclictest22-21ksoftirqd/123:01:001
6176994513,6cyclictest22-21ksoftirqd/123:47:021
617699445,6cyclictest22-21ksoftirqd/122:51:381
617699443,6cyclictest22-21ksoftirqd/121:41:091
6176994413,6cyclictest22-21ksoftirqd/122:12:201
6176994413,6cyclictest22-21ksoftirqd/121:51:551
6176994413,5cyclictest22-21ksoftirqd/100:02:371
70992431,32sleep07280-21awk23:15:300
617699432,9cyclictest0-21swapper/123:25:181
617699432,8cyclictest0-21swapper/100:16:431
617699432,8cyclictest0-21swapper/100:16:421
617699432,6cyclictest22-21ksoftirqd/122:39:521
617699432,10cyclictest0-21swapper/122:40:271
6176994313,5cyclictest22-21ksoftirqd/120:14:391
6176994313,4cyclictest22-21ksoftirqd/100:14:141
6372420,8sleep0617599cyclictest22:02:230
617699428,6cyclictest22884-21sh22:59:151
617699422,9cyclictest0-21swapper/121:48:291
617699422,9cyclictest0-21swapper/120:25:191
617699422,10cyclictest0-21swapper/123:33:011
617699422,10cyclictest0-21swapper/123:21:291
617699422,10cyclictest0-21swapper/121:30:191
617699422,10cyclictest0-21swapper/121:00:181
617699422,10cyclictest0-21swapper/100:30:401
6176994213,5cyclictest22-21ksoftirqd/123:10:541
617599421,12cyclictest0-21swapper/022:44:020
617699419,6cyclictest27967-21ntp_states22:30:251
617699418,6cyclictest22-21ksoftirqd/123:59:451
617699418,4cyclictest81rcu_preempt19:36:161
617699412,9cyclictest0-21swapper/123:50:531
617699412,9cyclictest0-21swapper/120:00:251
617699412,9cyclictest0-21swapper/119:30:141
6176994121,4cyclictest22-21ksoftirqd/122:07:581
6176994121,4cyclictest22-21ksoftirqd/121:11:001
6176994119,4cyclictest22-21ksoftirqd/120:36:421
617699411,10cyclictest0-21swapper/120:30:181
617699409,4cyclictest81rcu_preempt20:44:211
617699401,9cyclictest0-21swapper/123:40:191
617699401,9cyclictest0-21swapper/123:40:191
6176994013,6cyclictest22-21ksoftirqd/120:20:511
617699399,4cyclictest81rcu_preempt19:47:591
617699397,4cyclictest81rcu_preempt21:05:111
617699397,4cyclictest0-21swapper/120:15:191
6176993922,7cyclictest22-21ksoftirqd/120:55:141
6175993913,13cyclictest18443-21cpuspeed_turbos19:55:120
617699386,6cyclictest22-21ksoftirqd/120:50:191
6176993813,5cyclictest22-21ksoftirqd/120:45:231
617699378,4cyclictest81rcu_preempt20:05:051
617699375,3cyclictest81rcu_preempt19:53:421
12022370,9sleep0617599cyclictest00:16:320
12022370,9sleep0617599cyclictest00:16:320
617699366,3cyclictest81rcu_preempt19:56:461
6176993622,4cyclictest22-21ksoftirqd/119:40:271
617599362,22cyclictest5520-21/usr/sbin/munin20:45:230
617599362,21cyclictest20958-21ntp_states20:00:240
617599362,17cyclictest18055-21irqstats22:20:220
259422361,4sleep025956-21ssh21:21:150
617599351,21cyclictest1609-21irqstats23:10:210
617599351,15cyclictest20205-21ssh22:55:290
107572350,7sleep00-21swapper/023:53:230
617599342,15cyclictest10752-21ssh00:26:090
617599342,14cyclictest16148-21df_inode21:45:140
220782341,29sleep022089-21ssh22:25:030
187962340,8sleep0617599cyclictest23:28:100
617599335,5cyclictest81rcu_preempt21:35:220
617599332,16cyclictest9112-21users22:10:300
617599332,15cyclictest844-21wget20:35:100
617599331,20cyclictest21351-21grep23:30:260
617599331,13cyclictest31522-21ssh21:27:190
126152331,4sleep012629-21ssh23:21:110
617599324,4cyclictest81rcu_preempt00:13:240
617599323,4cyclictest81rcu_preempt23:02:420
617599323,4cyclictest81rcu_preempt00:46:080
617599322,4cyclictest81rcu_preempt23:09:090
617599322,4cyclictest81rcu_preempt00:35:170
617599322,16cyclictest13203-21iostat19:40:210
617599321,7cyclictest11944-21ntp_states21:40:240
6175993212,6cyclictest4978-21ntp_states00:20:260
617599321,15cyclictest1408-21ssh00:50:320
617599321,12cyclictest0-21swapper/023:55:520
135762321,28sleep013590-21ssh22:49:450
617599315,4cyclictest81rcu_preempt00:00:140
617599314,4cyclictest81rcu_preempt21:10:510
617599314,4cyclictest81rcu_preempt00:34:070
617599313,4cyclictest81rcu_preempt23:42:470
617599313,4cyclictest81rcu_preempt23:42:470
617599312,17cyclictest0-21swapper/019:34:140
617599312,14cyclictest24765-21/usr/sbin/munin20:10:260
617599311,4cyclictest81rcu_preempt22:36:050
617599311,14cyclictest24904-21ssh21:54:330
6175993111,16cyclictest4020-21sh22:05:300
617599303,4cyclictest81rcu_preempt21:32:530
6175993019,6cyclictest26988-21ssh22:30:080
617599301,4cyclictest81rcu_preempt23:35:040
617599301,4cyclictest81rcu_preempt21:57:080
617599301,4cyclictest81rcu_preempt20:41:110
617599301,4cyclictest81rcu_preempt20:09:250
617599301,17cyclictest12231-21cron19:38:010
617599301,13cyclictest26536-21ssh00:43:000
617599301,13cyclictest10660-21diskstats21:00:150
6175993010,16cyclictest14500-21cut22:50:180
55922300,22sleep03-21ksoftirqd/023:47:550
308652301,5sleep00-21swapper/020:26:060
617599292,11cyclictest14588-21aten_r4power_vo19:45:100
617599291,4cyclictest81rcu_preempt22:15:080
617599291,4cyclictest81rcu_preempt20:20:280
617599283,4cyclictest81rcu_preempt19:51:060
617599281,4cyclictest81rcu_preempt20:30:110
274082281,5sleep00-21swapper/020:19:250
80872271,5sleep00-21swapper/020:52:460
6175992717,6cyclictest8571-21basename20:55:140
617599271,4cyclictest81rcu_preempt21:09:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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