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2026-07-15 - 17:38

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 Wed Jul 15, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
215139912612,1254cyclictest27707-21irqstats11:55:211
215129911761143,30cyclictest0-21swapper/007:27:060
211212661609,31sleep10-21swapper/107:21:291
213232566517,33sleep00-21swapper/007:23:360
2151299225201,19cyclictest0-21swapper/011:55:210
2151399196187,6cyclictest0-21swapper/107:27:061
18362760,4sleep041ktimersoftd/010:45:290
35502520,3sleep10-21swapper/112:15:311
21513995122,4cyclictest22-21ksoftirqd/107:55:011
2151399469,6cyclictest22-21ksoftirqd/111:05:321
2151399469,6cyclictest22-21ksoftirqd/111:05:311
21513994518,5cyclictest22-21ksoftirqd/112:50:121
21513994413,6cyclictest22-21ksoftirqd/108:10:281
2151399438,6cyclictest22-21ksoftirqd/109:40:301
2151399436,6cyclictest22-21ksoftirqd/112:45:231
2151399425,6cyclictest22-21ksoftirqd/108:50:261
2151399417,6cyclictest22-21ksoftirqd/108:45:141
2151399416,4cyclictest81rcu_preempt12:20:231
21513994116,5cyclictest22-21ksoftirqd/110:57:541
21513994114,5cyclictest22-21ksoftirqd/110:25:131
21513994111,4cyclictest81rcu_preempt07:35:231
238242400,4sleep0111rcuc/010:20:110
2151399404,6cyclictest22-21ksoftirqd/109:25:251
2151399404,5cyclictest22-21ksoftirqd/109:56:531
2151399396,4cyclictest81rcu_preempt10:40:251
2151399394,6cyclictest22-21ksoftirqd/107:40:231
2151399393,5cyclictest22-21ksoftirqd/110:45:181
21513993922,4cyclictest22-21ksoftirqd/109:23:131
21513993915,4cyclictest22-21ksoftirqd/108:55:181
21513993910,4cyclictest81rcu_preempt11:29:101
21513993910,10cyclictest22-21ksoftirqd/112:00:131
2151399386,6cyclictest22-21ksoftirqd/110:33:331
21513993824,4cyclictest22-21ksoftirqd/112:40:201
21513993822,4cyclictest22-21ksoftirqd/109:15:211
21513993812,9cyclictest22-21ksoftirqd/110:04:251
21513993812,10cyclictest22-21ksoftirqd/111:45:111
2151399377,10cyclictest22-21ksoftirqd/110:05:211
2151399375,6cyclictest22-21ksoftirqd/110:38:091
2151399375,5cyclictest22-21ksoftirqd/109:48:171
2151399374,6cyclictest22-21ksoftirqd/109:30:091
2151399374,4cyclictest81rcu_preempt08:25:231
2151399372,6cyclictest22-21ksoftirqd/110:54:411
21513993723,4cyclictest22-21ksoftirqd/111:20:201
21513993718,4cyclictest22-21ksoftirqd/112:10:221
21513993718,4cyclictest22-21ksoftirqd/107:32:391
21513993715,6cyclictest22-21ksoftirqd/111:37:141
2151299374,17cyclictest1633-21iostat_ios09:20:220
2151399365,4cyclictest81rcu_preempt08:35:171
2151399365,4cyclictest81rcu_preempt08:33:381
2151399364,4cyclictest81rcu_preempt09:05:231
2151399363,4cyclictest81rcu_preempt10:20:111
21513993622,4cyclictest22-21ksoftirqd/111:50:181
2151399361,6cyclictest22-21ksoftirqd/111:40:151
21513993611,4cyclictest81rcu_preempt12:30:221
21512993611,13cyclictest3699-21switchtime10:50:300
2151399356,4cyclictest81rcu_preempt10:10:161
2151399356,4cyclictest81rcu_preempt08:05:271
2151399355,4cyclictest81rcu_preempt08:00:121
2151399355,10cyclictest22-21ksoftirqd/109:10:101
21513993521,4cyclictest22-21ksoftirqd/111:10:201
21513993518,4cyclictest22-21ksoftirqd/112:05:181
2151399351,4cyclictest81rcu_preempt08:24:291
2151399347,10cyclictest22-21ksoftirqd/108:40:101
2151399346,4cyclictest81rcu_preempt09:04:401
2151399343,4cyclictest81rcu_preempt12:35:211
21513993418,4cyclictest22-21ksoftirqd/111:15:181
21513993416,4cyclictest22-21ksoftirqd/109:35:141
2151399341,4cyclictest81rcu_preempt07:45:221
21513993412,10cyclictest22-21ksoftirqd/109:50:161
2151299341,19cyclictest25694-21chrt08:59:130
306992330,9sleep02151299cyclictest07:45:240
2151399333,4cyclictest81rcu_preempt12:25:191
2151399331,6cyclictest22-21ksoftirqd/108:15:131
2151299336,13cyclictest11377-21ntpq09:45:260
2151399325,4cyclictest81rcu_preempt11:00:181
21513993216,4cyclictest22-21ksoftirqd/110:15:191
21513993215,7cyclictest22-21ksoftirqd/107:50:141
2151299322,4cyclictest81rcu_preempt07:37:330
21512993223,6cyclictest2381-21mailstats07:55:280
21512993219,7cyclictest16837-21python11:25:260
2151299321,4cyclictest81rcu_preempt12:05:110
102692321,27sleep010310-21hddtemp_smartct12:35:190
2151299316,12cyclictest18534-21ntp_states11:30:280
2151299314,20cyclictest5364-21ntp_states10:55:280
21512993116,5cyclictest3-21ksoftirqd/012:22:360
2151299311,4cyclictest81rcu_preempt12:48:150
2151299311,4cyclictest81rcu_preempt12:10:480
103992311,5sleep00-21swapper/008:16:430
92932302,5sleep00-21swapper/012:31:180
21513993015,12cyclictest22-21ksoftirqd/111:30:201
2151299307,12cyclictest12136-21head08:20:300
2151299304,4cyclictest81rcu_preempt09:35:270
2151299302,15cyclictest13348-21/usr/sbin/munin09:50:280
2151299301,5cyclictest81rcu_preempt08:04:220
2151299301,4cyclictest81rcu_preempt08:45:140
21512993012,7cyclictest32281-21switchtime10:40:300
21512993012,6cyclictest5188-21diskstats09:30:130
2151299301,15cyclictest7037-21cut11:00:210
132002301,5sleep00-21swapper/012:42:420
97192291,5sleep00-21swapper/011:07:000
97192291,5sleep00-21swapper/011:06:590
289152291,5sleep00-21swapper/010:32:150
231422291,5sleep00-21swapper/011:44:340
2151299297,3cyclictest0-21swapper/010:05:210
2151299296,11cyclictest81rcu_preempt12:30:020
2151299292,15cyclictest0-21swapper/007:30:310
2151299292,14cyclictest0-21swapper/008:50:250
21512992911,9cyclictest10797-21kernelversion11:10:220
2151299291,19cyclictest0-21swapper/009:14:480
2151299291,10cyclictest0-21swapper/010:40:010
21512992910,5cyclictest7622-21hddtemp_smartct08:10:170
168762291,5sleep00-21swapper/012:51:370
86662281,5sleep00-21swapper/009:40:090
8532281,5sleep00-21swapper/007:51:280
6812281,5sleep00-21swapper/009:18:240
304802281,5sleep00-21swapper/012:02:370
2151299288,5cyclictest14242-21df11:20:140
2151299287,5cyclictest0-21swapper/010:01:120
2151299284,18cyclictest3619-21iostat_ios09:25:200
2151299281,23cyclictest18282-21basename08:40:010
2151299281,23cyclictest15255-21awk09:55:260
2151299281,13cyclictest26350-21grep10:25:240
21512992810,6cyclictest22425-21irqstats10:15:230
2151299280,4cyclictest81rcu_preempt09:07:360
200602281,5sleep00-21swapper/008:44:110
199352281,4sleep00-21swapper/010:10:070
163382281,5sleep00-21swapper/008:34:430
141002281,5sleep00-21swapper/008:25:550
2151299271,9cyclictest20063-21perl11:35:170
2151299271,17cyclictest0-21swapper/007:40:530
2151299271,14cyclictest26989-21switchtime09:00:270
2151299271,13cyclictest11565-21gdbus11:53:450
35692261,5sleep00-21swapper/012:15:340
2151299269,4cyclictest11565-21gdbus08:06:530
21512992612,4cyclictest3-21ksoftirqd/011:45:130
21512992514,7cyclictest1974-21lldpad11:15:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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