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2026-03-23 - 23:17

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 highest latencies:
System rack9slot4s (updated Mon Mar 23, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
133419912101187,20cyclictest0-21swapper/007:26:320
133429911971182,12cyclictest0-21swapper/107:26:561
129292610566,30sleep00-21swapper/007:21:160
128812564517,32sleep10-21swapper/107:20:461
256072940,5sleep0111rcuc/007:55:010
181972870,9sleep11334299cyclictest10:13:061
292522830,4sleep0111rcuc/011:30:400
74932820,7sleep01334199cyclictest12:15:270
74932820,7sleep01334199cyclictest12:15:270
54642730,5sleep15463-21fschecks_count11:40:161
261182520,8sleep11334299cyclictest10:20:321
311152460,5sleep031109-21pidof09:20:010
221872440,3sleep1211ktimersoftd/110:50:221
13341994011,11cyclictest3302-21runrttasks09:30:270
1334199391,14cyclictest1167-21ssh12:42:560
110512390,2sleep011052-21netstat08:40:240
1334299388,27cyclictest22-21ksoftirqd/109:57:361
1334299388,27cyclictest22-21ksoftirqd/109:57:361
1334299386,28cyclictest0-21swapper/111:36:561
13341993810,4cyclictest0-21swapper/012:30:110
3862371,31sleep1397-21ssh12:08:491
243842370,10sleep11334299cyclictest09:45:281
1334299375,4cyclictest81rcu_preempt10:06:551
13342993728,5cyclictest0-21swapper/110:44:151
13342993717,8cyclictest22-21ksoftirqd/110:32:381
76382361,3sleep07652-21ssh10:01:440
1334299366,4cyclictest81rcu_preempt10:35:191
13341993617,6cyclictest16837-21memory12:25:220
93212351,30sleep19372-21iostat09:30:191
13342993515,8cyclictest40550irq/92-i91509:15:251
13342993511,4cyclictest81rcu_preempt12:00:201
1334199356,7cyclictest31703-21diskstats09:20:140
1334199353,4cyclictest81rcu_preempt11:15:280
1334199352,6cyclictest23040-21rm10:18:060
1334199352,5cyclictest0-21swapper/011:13:160
1334199351,5cyclictest27658-21ssh12:03:150
1334299349,4cyclictest81rcu_preempt08:24:421
1334299348,22cyclictest0-21swapper/112:18:361
1334299348,22cyclictest0-21swapper/112:18:351
1334299344,4cyclictest81rcu_preempt12:20:171
13342993427,5cyclictest0-21swapper/109:36:151
13342993425,5cyclictest8749-21fschecks_count11:10:161
1334299342,28cyclictest0-21swapper/109:52:101
1334299341,5cyclictest3354-21ssh12:10:561
1334299341,30cyclictest0-21swapper/108:39:551
1334199345,4cyclictest81rcu_preempt10:35:250
1334199341,5cyclictest24608-21ssh11:25:550
1334199341,29cyclictest26016-21ssh12:35:160
1334199341,29cyclictest2403-21irqbalance11:35:150
1334199341,21cyclictest5111-21wget11:40:120
1334199341,16cyclictest42-21kswapd010:52:370
13341993410,20cyclictest0-21swapper/010:11:370
70042331,3sleep07015-21ssh11:08:280
262462331,4sleep126250-21irqstats07:55:211
1334299334,4cyclictest81rcu_preempt09:27:401
1334299333,28cyclictest0-21swapper/111:52:151
1334299332,4cyclictest0-21swapper/109:24:151
1334299332,27cyclictest0-21swapper/111:09:351
1334299331,30cyclictest0-21swapper/111:28:561
1334299331,30cyclictest0-21swapper/111:15:351
1334199334,5cyclictest81rcu_preempt09:40:530
1334199333,17cyclictest0-21swapper/010:05:240
1334199332,4cyclictest0-21swapper/011:22:360
13341993324,6cyclictest0-21swapper/012:22:360
13341993324,5cyclictest5899-21ssh12:14:390
1334199332,3cyclictest0-21swapper/011:51:150
1334199331,30cyclictest0-21swapper/012:49:150
1334199331,30cyclictest0-21swapper/010:23:560
1334199331,30cyclictest0-21swapper/009:46:350
1334199331,30cyclictest0-21swapper/007:40:360
1334199331,28cyclictest4252-21uniq09:25:160
1334199331,20cyclictest15490-21rm10:43:550
13341993311,11cyclictest0-21swapper/010:33:000
28692321,5sleep00-21swapper/009:56:520
28692321,5sleep00-21swapper/009:56:520
1334299324,4cyclictest81rcu_preempt12:50:241
1334299324,4cyclictest81rcu_preempt12:41:111
1334299323,4cyclictest81rcu_preempt10:02:311
13342993225,4cyclictest0-21swapper/111:21:361
1334299322,4cyclictest81rcu_preempt11:01:121
13342993222,5cyclictest22-21ksoftirqd/108:05:091
13342993214,15cyclictest22-21ksoftirqd/111:33:261
1334299321,29cyclictest0-21swapper/107:37:361
1334199324,4cyclictest81rcu_preempt10:26:380
1334199323,4cyclictest81rcu_preempt09:35:170
1334199323,14cyclictest30497-21gdbus08:37:140
13341993224,6cyclictest0-21swapper/007:30:560
1334199322,12cyclictest0-21swapper/012:08:410
1334199321,5cyclictest10175-21diskstats11:45:170
13341993212,7cyclictest21393-21diskmemload11:04:210
1334299314,5cyclictest81rcu_preempt10:26:141
1334299314,4cyclictest81rcu_preempt12:38:321
1334299314,4cyclictest81rcu_preempt12:31:131
1334299313,4cyclictest81rcu_preempt12:47:541
1334299313,4cyclictest81rcu_preempt10:16:281
1334299312,4cyclictest81rcu_preempt10:49:461
1334299311,9cyclictest18402-21rm12:26:481
1334299311,4cyclictest81rcu_preempt11:56:331
1334299311,4cyclictest81rcu_preempt11:45:121
1334299311,16cyclictest7375-21grep08:30:261
1334199313,13cyclictest30497-21gdbus08:55:200
1334199312,13cyclictest2329-21NetworkManager10:57:220
1334199311,4cyclictest81rcu_preempt09:04:190
1334199311,4cyclictest0-21swapper/007:57:550
1334199311,13cyclictest914-21cpuspeed_turbos08:15:120
1334199311,11cyclictest7374-21ps08:30:250
1334299305,4cyclictest81rcu_preempt09:40:171
1334299303,4cyclictest81rcu_preempt09:03:071
1334299303,4cyclictest81rcu_preempt07:51:131
1334299302,4cyclictest81rcu_preempt08:41:241
1334299301,16cyclictest0-21swapper/109:10:221
13342993010,16cyclictest22-21ksoftirqd/110:55:241
1334199307,7cyclictest652-21latency_hist08:15:000
1334199302,14cyclictest19947-21tune2fs11:55:150
1334199302,14cyclictest16783-21df10:45:120
13341993020,6cyclictest2645-21snmpd09:53:140
13341993012,4cyclictest5453-21ntpq08:25:240
13341993010,4cyclictest3302-21runrttasks12:50:270
175212291,5sleep10-21swapper/107:32:481
13342992922,5cyclictest0-21swapper/108:02:351
1334299292,22cyclictest5105-21/usr/sbin/munin08:25:161
1334299291,8cyclictest22129-21grep07:45:151
1334299290,4cyclictest81rcu_preempt08:16:341
1334199299,15cyclictest18186-21cat07:35:140
1334199296,12cyclictest0-21swapper/007:49:560
1334199291,3cyclictest81rcu_preempt09:12:040
13341992911,6cyclictest30942-21seq08:08:020
210102281,5sleep10-21swapper/109:06:071
1334299281,22cyclictest552-21sh08:15:001
1334199281,14cyclictest3001-21/usr/sbin/munin08:20:120
13341992811,4cyclictest0-21swapper/008:50:170
13341992810,5cyclictest0-21swapper/008:03:220
1334299273,3cyclictest81rcu_preempt08:51:401
1334299271,4cyclictest81rcu_preempt08:55:201
1334299271,22cyclictest20123-21df_inode07:40:141
1334199271,13cyclictest19674-21/usr/sbin/munin09:05:110
1334199271,13cyclictest13290-21cat08:45:290
1334299242,4cyclictest81rcu_preempt08:45:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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