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2026-03-12 - 03:17

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 376 highest latencies:
System rack9slot4s (updated Thu Mar 12, 2026 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
261329912441201,27cyclictest2645-21snmpd19:26:211
261319911751138,26cyclictest2645-21snmpd19:26:200
258852576531,29sleep00-21swapper/019:23:010
258592491445,31sleep10-21swapper/119:22:441
2739621000,5sleep12613299cyclictest22:42:551
20702950,8sleep12613299cyclictest21:10:131
105572880,8sleep12613299cyclictest00:39:591
91552730,3sleep09154-21pidof00:38:000
284222700,5sleep00-21swapper/021:36:450
243582690,8sleep02613199cyclictest23:13:230
217252690,3sleep121724-21ssh22:03:511
2613199637,28cyclictest0-21swapper/022:17:160
65252550,4sleep0111rcuc/023:28:210
33552530,7sleep12613299cyclictest00:31:361
171122520,4sleep081rcu_preempt22:32:000
270892490,2sleep027088-21basename20:50:180
117422460,5sleep0111rcuc/023:00:160
2613299406,5cyclictest0-21swapper/121:52:551
2613299401,35cyclictest0-21swapper/121:42:161
154752400,3sleep1201rcuc/120:20:121
89752391,4sleep18985-21ssh22:24:131
2613199391,15cyclictest0-21swapper/022:25:350
2613299385,29cyclictest0-21swapper/120:55:161
26132993817,7cyclictest22-21ksoftirqd/122:06:151
26131993829,5cyclictest0-21swapper/022:10:350
26131993816,6cyclictest23346-21sh00:53:590
2613299375,3cyclictest0-21swapper/123:38:561
2613299362,5cyclictest15146-21hddtemp_smartct22:30:161
26131993610,12cyclictest11955-21seq23:34:150
30482351,4sleep13058-21ssh22:50:331
2613299356,4cyclictest81rcu_preempt23:30:261
2613299353,30cyclictest0-21swapper/119:59:161
2613299353,29cyclictest0-21swapper/100:25:361
26132993525,7cyclictest0-21swapper/122:37:361
2613299352,21cyclictest0-21swapper/123:05:241
26132993519,4cyclictest22-21ksoftirqd/123:26:211
2613199356,26cyclictest24415-21cron20:44:010
2613199354,4cyclictest81rcu_preempt23:24:000
2613199353,29cyclictest0-21swapper/000:33:560
26131993527,5cyclictest2403-21irqbalance23:58:360
2613199351,5cyclictest19116-21ssh23:40:360
26131993513,3cyclictest0-21swapper/021:16:480
17422351,30sleep11752-21ssh23:23:371
92212341,5sleep19235-21ssh22:57:281
84822341,29sleep18493-21ssh00:04:081
2613299347,5cyclictest81rcu_preempt23:44:061
2613299343,4cyclictest81rcu_preempt22:11:301
26132993425,5cyclictest14847-21ssh23:03:351
2613299341,28cyclictest1968-21lldpad22:16:261
2613299341,13cyclictest0-21swapper/100:46:061
2613199349,13cyclictest26128-21sh22:08:130
2613199346,25cyclictest5752-21cron21:14:000
2613199344,18cyclictest14187-21unixbench_singl23:35:300
2613199342,20cyclictest0-21swapper/000:21:330
2613199342,17cyclictest31495-21ntp_states19:35:230
2613199341,5cyclictest12800-21ssh00:41:160
26131993414,6cyclictest116752tr21:20:110
26131993413,5cyclictest10882-21sed20:05:280
2613199341,29cyclictest19141-21ssh00:49:150
2613199341,20cyclictest30966-21/usr/sbin/munin21:40:260
26131993410,12cyclictest0-21swapper/021:55:510
1284423417,4sleep122-21ksoftirqd/100:08:271
2613299334,4cyclictest81rcu_preempt22:46:241
2613299334,4cyclictest81rcu_preempt21:59:071
2613299334,4cyclictest81rcu_preempt21:39:491
2613299334,4cyclictest81rcu_preempt21:18:561
2613299333,15cyclictest27118-21ssh23:50:011
2613299332,6cyclictest0-21swapper/100:22:151
26132993325,6cyclictest0-21swapper/120:06:361
2613299332,4cyclictest81rcu_preempt21:46:331
2613299331,5cyclictest81rcu_preempt00:18:221
2613299331,5cyclictest81rcu_preempt00:18:211
2613299331,17cyclictest20237-21fschecks_count00:50:131
2613199339,4cyclictest81rcu_preempt21:53:590
2613199334,26cyclictest3-21ksoftirqd/020:17:400
2613199333,27cyclictest15947-21taskset00:10:580
2613199332,5cyclictest81rcu_preempt22:43:270
2613199332,4cyclictest81rcu_preempt23:50:100
26131993318,5cyclictest3-21ksoftirqd/000:06:230
213772331,3sleep021554-21expr21:30:120
2613299326,4cyclictest81rcu_preempt19:45:191
2613299323,4cyclictest81rcu_preempt21:31:121
2613299321,5cyclictest0-21swapper/120:40:161
2613299321,4cyclictest81rcu_preempt20:26:321
2613299321,29cyclictest0-21swapper/120:32:361
2613199329,6cyclictest22540-21munin-run22:05:000
2613199326,12cyclictest81rcu_preempt00:25:150
2613199322,18cyclictest0-21swapper/020:20:200
2613199322,12cyclictest0-21swapper/000:02:230
2613199321,4cyclictest81rcu_preempt22:36:160
2613199321,4cyclictest81rcu_preempt19:30:510
26131993210,18cyclictest0-21swapper/023:15:020
174962321,4sleep116416-21/usr/sbin/munin21:25:271
83362311,4sleep18357-21iostat_ios20:00:201
2613299313,6cyclictest23880-21users23:45:321
2613299313,4cyclictest81rcu_preempt23:57:371
2613299311,4cyclictest81rcu_preempt23:11:121
2613299311,4cyclictest81rcu_preempt21:06:281
2613299311,4cyclictest81rcu_preempt20:11:581
2613299311,4cyclictest81rcu_preempt00:11:131
2613299311,28cyclictest0-21swapper/100:40:561
2613199317,12cyclictest0-21swapper/023:05:450
2613199313,4cyclictest81rcu_preempt00:18:470
2613199313,4cyclictest81rcu_preempt00:18:470
2613199313,14cyclictest6878-21python19:55:260
26131993114,6cyclictest25242-21ssh23:47:300
2613199311,27cyclictest0-21swapper/022:50:360
26131993110,9cyclictest0-21swapper/022:46:350
11332310,5sleep00-21swapper/019:40:250
277922300,3sleep127791-21grep20:50:281
2613299302,23cyclictest22638-21munin-run20:40:001
2613299301,4cyclictest81rcu_preempt19:32:181
2613299301,3cyclictest0-21swapper/121:24:151
2613299300,4cyclictest81rcu_preempt23:19:411
2613199305,12cyclictest0-21swapper/019:52:340
2613199301,4cyclictest81rcu_preempt20:33:310
2613199301,13cyclictest16740-21df_inode21:25:130
2613299291,4cyclictest81rcu_preempt22:25:181
2613299291,4cyclictest81rcu_preempt21:00:251
2613299291,4cyclictest81rcu_preempt19:54:261
26132992912,4cyclictest22-21ksoftirqd/120:15:231
2613199293,12cyclictest21740-21ntp_states20:35:230
2613199292,14cyclictest29031-21iostat_ios20:55:170
26131992919,6cyclictest32502-21df_inode21:05:140
26131992918,7cyclictest1475-21diskmemload22:20:130
2613199291,15cyclictest3523-21aten_r4power_po21:45:110
26131992911,5cyclictest2236-21ls19:45:130
2613199291,14cyclictest3302-21runrttasks21:04:470
2613199291,13cyclictest25114-21grep20:45:150
2613199291,13cyclictest10737-21ssh22:59:390
186992291,5sleep00-21swapper/020:28:150
94582281,4sleep00-21swapper/020:04:560
2613299285,10cyclictest81rcu_preempt19:40:131
2613199281,14cyclictest12543-21/usr/sbin/munin20:10:290
26132992718,5cyclictest24888-21cpuspeed_turbos20:45:111
2613299271,17cyclictest0-21swapper/119:36:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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