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2026-07-28 - 03:18

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 100 highest latencies:
System rack9slot4s (updated Tue Jul 28, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33819912131179,27cyclictest5432-21latency_hist19:30:011
26522576516,42sleep00-21swapper/019:20:290
32422462366,33sleep10-21swapper/119:24:131
338099136111,21cyclictest5371-21munin-node19:30:010
307592810,9sleep0338099cyclictest20:35:130
253582530,2sleep025357-21smartctl20:20:170
3381994120,8cyclictest22-21ksoftirqd/119:45:131
3381993832,4cyclictest22-21ksoftirqd/121:10:001
3381993821,4cyclictest22-21ksoftirqd/120:12:061
3381993722,4cyclictest22-21ksoftirqd/100:54:191
338199371,7cyclictest22-21ksoftirqd/120:25:281
338099375,5cyclictest81rcu_preempt22:40:150
3381993619,4cyclictest22-21ksoftirqd/120:05:001
338199361,6cyclictest22-21ksoftirqd/123:45:151
338199361,6cyclictest22-21ksoftirqd/121:15:121
3381993616,8cyclictest22-21ksoftirqd/100:24:241
338199361,5cyclictest22-21ksoftirqd/123:15:151
338199361,5cyclictest22-21ksoftirqd/121:10:301
338199361,5cyclictest22-21ksoftirqd/100:40:121
338199361,4cyclictest22-21ksoftirqd/120:20:121
338099361,23cyclictest747-21ntpq20:40:240
338099361,23cyclictest22044-21/usr/sbin/munin20:10:280
338099361,21cyclictest20200-21cron23:00:000
338099361,21cyclictest20200-21cron23:00:000
3380993612,10cyclictest14922-21cron21:20:000
338199358,4cyclictest81rcu_preempt22:45:291
338199357,4cyclictest81rcu_preempt19:35:121
338199351,5cyclictest22-21ksoftirqd/121:00:131
338199351,5cyclictest22-21ksoftirqd/120:55:131
338199351,4cyclictest22-21ksoftirqd/100:00:121
338199345,4cyclictest81rcu_preempt00:05:241
338199342,4cyclictest22-21ksoftirqd/122:00:281
338199342,4cyclictest22-21ksoftirqd/100:15:251
338199341,4cyclictest22-21ksoftirqd/122:30:121
338199341,4cyclictest22-21ksoftirqd/120:35:291
338099347,14cyclictest2225-21dbus-daemon21:36:080
338199332,4cyclictest22-21ksoftirqd/119:50:101
338199331,4cyclictest22-21ksoftirqd/123:20:211
338199331,4cyclictest22-21ksoftirqd/120:40:111
3381993310,4cyclictest81rcu_preempt22:55:311
3381993310,4cyclictest81rcu_preempt22:55:311
338099331,14cyclictest28275-21/usr/sbin/munin00:45:220
3380993311,18cyclictest27495-21date00:45:010
232192331,28sleep123224-21irqstats21:40:201
96242321,4sleep09775-21latency_hist19:40:010
338199329,4cyclictest81rcu_preempt22:20:211
338199324,4cyclictest81rcu_preempt23:30:271
338199323,4cyclictest81rcu_preempt21:45:161
3381993216,6cyclictest22-21ksoftirqd/123:37:061
338099327,12cyclictest2637-21ntp_kernel_pll_20:45:250
338099327,12cyclictest2637-21ntp_kernel_pll_20:45:250
338099322,10cyclictest0-21swapper/021:25:120
3380993219,7cyclictest4362-21users23:40:290
338099321,18cyclictest28091-21cron21:55:000
3380993210,18cyclictest10885-21ls00:00:130
201402321,4sleep020308-21df00:25:130
38922311,26sleep13926-21ntp_states23:40:241
338199319,4cyclictest81rcu_preempt23:10:141
338199319,4cyclictest81rcu_preempt00:25:141
338199318,4cyclictest81rcu_preempt21:25:301
338199312,4cyclictest81rcu_preempt19:30:201
3381993118,4cyclictest22-21ksoftirqd/100:15:001
3381993116,4cyclictest22-21ksoftirqd/123:55:301
338199311,5cyclictest81rcu_preempt00:30:131
338199311,16cyclictest29300-21memory20:30:221
338099317,11cyclictest0-21swapper/021:40:260
338099315,14cyclictest4123-21/usr/sbin/munin22:15:230
338099312,13cyclictest19679-21ntp_states21:30:240
3380993113,5cyclictest1296-21/usr/sbin/munin22:10:000
3380993112,6cyclictest26300-21df_inode23:15:130
3380993110,17cyclictest15824-21timerandwakeup22:45:290
160862311,26sleep116133-21switchtime21:20:271
338199309,7cyclictest0-21swapper/123:26:421
338199309,4cyclictest81rcu_preempt23:00:121
338199308,4cyclictest81rcu_preempt22:15:221
338199308,4cyclictest81rcu_preempt22:10:111
338199308,4cyclictest81rcu_preempt22:05:121
338199308,4cyclictest81rcu_preempt21:55:181
338199308,4cyclictest81rcu_preempt20:50:131
338199307,4cyclictest81rcu_preempt19:55:141
338199302,8cyclictest0-21swapper/122:36:531
3381993016,4cyclictest22-21ksoftirqd/122:26:291
338199301,10cyclictest22-21ksoftirqd/119:40:141
3381993010,4cyclictest81rcu_preempt20:15:111
338099304,4cyclictest81rcu_preempt20:26:260
338099303,4cyclictest81rcu_preempt23:55:130
338099302,14cyclictest6240-21users23:45:310
3380993020,6cyclictest30789-21cat22:00:220
338099301,4cyclictest81rcu_preempt22:20:290
338099301,4cyclictest81rcu_preempt22:10:510
338099301,4cyclictest81rcu_preempt19:47:280
3380993012,6cyclictest18162-21ntp_states20:00:260
338099301,25cyclictest24466-21taskset20:17:490
338099301,14cyclictest0-21swapper/000:38:120
3380993010,6cyclictest4686-21/usr/sbin/munin20:50:260
262372301,5sleep10-21swapper/121:50:011
238422301,5sleep10-21swapper/123:08:401
338199291,4cyclictest81rcu_preempt22:50:121
338199291,4cyclictest81rcu_preempt20:07:291
338099296,11cyclictest0-21swapper/022:51:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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