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2026-07-17 - 04:06

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 all highest latencies:
System rack9slot4s (updated Fri Jul 17, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
103889911871169,15cyclictest0-21swapper/119:25:521
103889911691148,18cyclictest0-21swapper/119:45:181
101602522454,52sleep00-21swapper/019:23:100
101992470425,30sleep10-21swapper/119:23:361
1038799203193,7cyclictest0-21swapper/019:25:520
1038799183174,6cyclictest0-21swapper/019:45:180
15942930,5sleep00-21swapper/020:25:150
136942600,2sleep013696-21sort19:30:200
86562540,8sleep11038899cyclictest20:43:521
93612420,3sleep00-21swapper/023:35:290
10388994024,6cyclictest22-21ksoftirqd/122:26:281
10388994023,6cyclictest22-21ksoftirqd/123:21:121
301062390,4sleep11038899cyclictest23:05:251
10388993922,6cyclictest22-21ksoftirqd/123:43:401
10388993823,5cyclictest22-21ksoftirqd/122:54:341
10388993822,5cyclictest22-21ksoftirqd/123:46:171
10388993822,5cyclictest22-21ksoftirqd/120:10:271
10388993821,6cyclictest22-21ksoftirqd/122:24:371
10388993820,6cyclictest22-21ksoftirqd/120:05:001
10388993723,5cyclictest22-21ksoftirqd/122:56:251
10388993722,5cyclictest22-21ksoftirqd/121:18:081
10388993719,5cyclictest22-21ksoftirqd/121:00:581
1038799371,15cyclictest0-21swapper/020:21:350
1038799371,15cyclictest0-21swapper/020:21:340
97962361,31sleep09897-21mailstats20:45:270
10388993621,6cyclictest22-21ksoftirqd/122:37:061
10388993620,6cyclictest22-21ksoftirqd/122:33:251
1038899352,10cyclictest0-21swapper/100:20:001
10388993520,5cyclictest22-21ksoftirqd/123:02:421
10388993520,5cyclictest22-21ksoftirqd/100:03:061
10388993519,6cyclictest22-21ksoftirqd/121:05:501
10388993519,6cyclictest22-21ksoftirqd/121:05:501
10388993518,6cyclictest22-21ksoftirqd/119:52:471
247082343,27sleep024884-21grep22:50:310
10388993419,5cyclictest22-21ksoftirqd/122:49:031
10388993418,6cyclictest22-21ksoftirqd/119:37:311
10388993418,5cyclictest22-21ksoftirqd/120:25:021
191772331,3sleep119222-21/usr/sbin/munin21:10:261
10388993318,5cyclictest22-21ksoftirqd/122:10:281
10388993318,5cyclictest22-21ksoftirqd/100:26:481
10388993317,6cyclictest22-21ksoftirqd/121:36:101
1038799331,15cyclictest0-21swapper/000:19:180
254502320,8sleep11038899cyclictest00:20:141
10388993216,6cyclictest22-21ksoftirqd/119:56:341
1038799321,12cyclictest0-21swapper/022:20:060
316612311,5sleep00-21swapper/020:19:430
282692311,4sleep028382-21mailstats23:00:290
211712311,5sleep10-21swapper/122:40:421
119282311,26sleep00-21swapper/022:17:300
1038899317,12cyclictest40250irq/92-i91522:15:161
1038899312,9cyclictest3286-21runrttasks19:31:291
10388993117,4cyclictest22-21ksoftirqd/120:38:381
10388993115,5cyclictest22-21ksoftirqd/120:46:011
10387993121,6cyclictest16211-21wget22:30:110
1038799312,15cyclictest5724-21awk23:25:300
1038799311,4cyclictest81rcu_preempt23:34:170
10387993112,5cyclictest29196-21df00:30:130
198722301,5sleep00-21swapper/022:40:080
1038899306,5cyclictest0-21swapper/120:21:351
1038899306,5cyclictest0-21swapper/120:21:341
1038899302,14cyclictest0-21swapper/121:20:051
10388993016,4cyclictest22-21ksoftirqd/120:34:301
10388993015,5cyclictest22-21ksoftirqd/123:28:551
10388993012,5cyclictest40250irq/92-i91500:30:231
1038799302,16cyclictest0-21swapper/023:43:260
10387993021,5cyclictest2944-21cut23:20:140
1038799301,4cyclictest81rcu_preempt21:19:400
1038799301,23cyclictest6983-21sh22:05:140
10387993010,7cyclictest27724-21memory00:25:220
3542291,5sleep00-21swapper/021:45:470
276132291,5sleep00-21swapper/020:06:400
259702291,5sleep00-21swapper/020:04:050
237372291,5sleep00-21swapper/021:24:020
231312291,5sleep00-21swapper/022:46:330
230242291,5sleep00-21swapper/000:14:110
21682291,5sleep00-21swapper/023:18:400
196132291,5sleep00-21swapper/022:39:110
181302291,5sleep00-21swapper/019:40:510
171352291,4sleep10-21swapper/123:56:441
1038899296,12cyclictest22-21ksoftirqd/121:48:291
1038899293,5cyclictest0-21swapper/121:50:111
1038899292,9cyclictest0-21swapper/120:06:251
1038899292,7cyclictest2401-21NetworkManager21:44:161
1038899291,9cyclictest8910-21ls23:35:231
1038899291,9cyclictest3024-21wget21:55:121
10388992917,7cyclictest14163-21diskstats23:50:151
10388992913,6cyclictest22-21ksoftirqd/122:02:441
1038799294,18cyclictest9403-21ntp_states22:10:260
1038799294,16cyclictest0-21swapper/023:49:430
1038799293,18cyclictest0-21swapper/020:31:520
1038799293,13cyclictest0-21swapper/020:10:220
1038799292,13cyclictest26897-21munin-run00:25:010
1038799292,13cyclictest11565-21gdbus22:00:020
1038799291,4cyclictest81rcu_preempt21:51:200
1038799291,4cyclictest81rcu_preempt20:41:460
1038799291,4cyclictest81rcu_preempt19:52:120
1038799291,21cyclictest14721-21hddtemp_smartct22:25:190
1038799291,19cyclictest0-21swapper/021:08:040
1038799291,19cyclictest0-21swapper/021:08:030
10387992911,6cyclictest31613-21/usr/sbin/munin00:35:230
1038799291,15cyclictest5700-21sshd00:53:300
1038799291,15cyclictest28297-21/usr/sbin/munin21:35:180
1038799291,15cyclictest23996-21/usr/sbin/munin21:25:270
1038799291,14cyclictest5538-21fschecks_count20:35:160
1038799291,14cyclictest0-21swapper/023:14:140
1038799291,13cyclictest20345-21ntp_states00:05:280
39372281,5sleep00-21swapper/000:49:410
37852281,5sleep10-21swapper/100:48:061
209432281,5sleep10-21swapper/100:07:061
173602281,5sleep00-21swapper/023:59:020
162152281,5sleep00-21swapper/019:35:380
16092281,4sleep10-21swapper/100:41:341
141042281,5sleep00-21swapper/020:56:550
140672281,5sleep10-21swapper/120:56:311
1038899284,18cyclictest4735-21iostat_ios00:50:221
1038899282,8cyclictest8127-21latency_hist23:35:001
1038899281,9cyclictest22521-21ls00:10:301
1038899281,6cyclictest0-21swapper/119:40:261
10388992811,13cyclictest0-21swapper/121:30:371
1038799282,13cyclictest0-21swapper/022:58:380
10387992813,11cyclictest18695-21grep21:10:140
1038799281,14cyclictest30236-21iostat_ios21:40:190
1038799281,14cyclictest30160-21wc23:05:270
1038799281,14cyclictest17936-21/usr/sbin/munin00:00:170
1038799281,13cyclictest26690-21grep21:30:390
10387992810,5cyclictest11565-21gdbus21:02:200
224382271,5sleep00-21swapper/019:55:040
18822271,4sleep10-21swapper/123:15:521
1038899272,13cyclictest0-21swapper/120:52:501
1038899271,8cyclictest25004-21/usr/sbin/munin21:25:271
1038899271,6cyclictest0-21swapper/100:35:231
1038899271,12cyclictest29979-21aten_r4power_cu20:15:121
1038799279,5cyclictest3026-21aten_r4power_vo21:55:110
1038799273,16cyclictest0-21swapper/020:51:130
1038799271,4cyclictest81rcu_preempt23:53:150
1038799270,4cyclictest81rcu_preempt00:43:020
1038899261,7cyclictest31512-21fschecks_count23:10:171
1038899251,7cyclictest7513-21awk22:05:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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