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2026-05-19 - 21:48

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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 rackcslot7s.osadl.org (updated Tue May 19, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146899921200,17sleep2341ksoftirqd/207:05:202
152248321170,3sleep13056-21PK-Backend09:35:201
157479821000,4sleep13056-21PK-Backend12:05:141
139099910,56rtkit-daemon0-21swapper/307:07:153
146953927840,13sleep00-21swapper/007:05:380
146955527346,17sleep10-21swapper/107:05:521
15644392520,3sleep13056-21PK-Backend11:35:141
15308202470,2sleep30-21swapper/310:00:133
15516872370,12sleep126-21ksoftirqd/111:00:131
14766812300,11sleep126-21ksoftirqd/107:25:201
147002799280,26cyclictest1509203-21cron09:00:013
15089132270,4sleep13056-21PK-Backend08:56:391
15444842250,4chrt3056-21PK-Backend10:40:001
1470027992512,11cyclictest42-21ksoftirqd/310:10:023
15642192240,5sleep2331rcuc/211:35:112
1470027992414,8cyclictest436-20systemd-journal10:30:003
147001799241,3cyclictest0-21swapper/007:20:210
147001799240,7cyclictest1479104-21turbostat07:34:590
15708012230,8sleep342-21ksoftirqd/311:55:013
147002799230,21cyclictest1561712-21taskset11:26:353
147002799230,21cyclictest1561712-21taskset11:26:353
147002799230,21cyclictest0-21swapper/309:40:013
1470021992320,1cyclictest3056-21PK-Backend10:40:201
1470017992315,6cyclictest1536865-21python310:15:210
1470027992220,1cyclictest0-21swapper/311:37:223
1470027992220,1cyclictest0-21swapper/310:32:003
1470027992220,1cyclictest0-21swapper/310:32:003
1470027992220,1cyclictest0-21swapper/307:14:363
1470027992219,2cyclictest1520824-21find09:30:223
1470027992218,3cyclictest0-21swapper/311:10:193
1470027992213,7cyclictest883-21dbus-daemon08:25:003
147002799221,18cyclictest82332-21update-manager11:30:113
147002799220,20cyclictest1529203-21hddtemp_smartct09:55:163
1470022992215,5cyclictest1488723-21df08:00:132
1470022992213,7cyclictest1497494-21/usr/sbin/munin08:25:172
147002299220,20cyclictest1479100-21apt-get07:35:022
1470021992220,1cyclictest3056-21PK-Backend09:06:571
1470021992219,2cyclictest3056-21PK-Backend11:11:501
1470021992219,2cyclictest3056-21PK-Backend09:30:501
147002199220,20cyclictest3056-21PK-Backend11:07:571
15713652210,4sleep00-21swapper/011:55:180
15661402210,4sleep13056-21PK-Backend11:40:161
1470027992120,1cyclictest0-21swapper/308:01:333
1470027992119,1cyclictest0-21swapper/311:45:203
1470027992119,1cyclictest0-21swapper/309:26:033
1470027992119,1cyclictest0-21swapper/309:22:443
1470027992119,1cyclictest0-21swapper/308:43:233
1470027992119,1cyclictest0-21swapper/308:38:313
1470027992119,1cyclictest0-21swapper/307:57:353
147002799211,7cyclictest1515548-21python309:15:213
1470027992113,6cyclictest1506435-21ntp_states08:50:183
147002799210,20cyclictest0-21swapper/311:56:093
147002799210,20cyclictest0-21swapper/309:45:223
147002799210,20cyclictest0-21swapper/308:26:283
147002799210,20cyclictest0-21swapper/308:05:313
147002799210,20cyclictest0-21swapper/307:53:363
147002799210,19cyclictest42-21ksoftirqd/310:35:123
1470022992119,1cyclictest0-21swapper/212:31:362
1470022992119,1cyclictest0-21swapper/212:26:572
1470022992119,1cyclictest0-21swapper/209:39:062
1470022992117,3cyclictest1504702-21ntp_states08:45:192
1470022992115,4cyclictest1526935-21latency_hist09:50:012
1470022992114,5cyclictest1523502-21mktemp09:40:012
147002299210,1cyclictest0-21swapper/210:45:502
1470021992119,1cyclictest3056-21PK-Backend11:45:361
1470021992119,1cyclictest3056-21PK-Backend10:33:091
1470021992119,1cyclictest3056-21PK-Backend10:33:091
1470021992119,1cyclictest3056-21PK-Backend10:19:041
1470021992119,1cyclictest3056-21PK-Backend09:21:241
1470021992119,1cyclictest3056-21PK-Backend08:45:491
1470021992118,2cyclictest3056-21PK-Backend08:44:471
147002199210,20cyclictest3056-21PK-Backend08:29:321
147002199210,19cyclictest3056-21PK-Backend10:50:541
147002199210,19cyclictest3056-21PK-Backend10:29:041
147002199210,19cyclictest3056-21PK-Backend09:40:171
1470017992119,1cyclictest3056-21PK-Backend07:10:340
1470017992119,1cyclictest0-21swapper/007:42:180
1470017992119,1cyclictest0-21swapper/007:15:210
1470017992118,2cyclictest3056-21PK-Backend12:04:100
147001799210,20cyclictest0-21swapper/012:13:160
147001799210,20cyclictest0-21swapper/012:07:490
147001799210,20cyclictest0-21swapper/011:24:300
139099210,15rtkit-daemon3056-21PK-Backend10:53:293
139099210,14rtkit-daemon0-21swapper/310:42:103
1470027992018,1cyclictest3056-21PK-Backend12:01:373
1470027992018,1cyclictest3056-21PK-Backend10:57:423
1470027992018,1cyclictest0-21swapper/312:29:563
1470027992018,1cyclictest0-21swapper/312:16:093
1470027992018,1cyclictest0-21swapper/312:05:143
1470027992018,1cyclictest0-21swapper/311:18:033
1470027992018,1cyclictest0-21swapper/310:20:443
1470027992018,1cyclictest0-21swapper/309:51:593
1470027992018,1cyclictest0-21swapper/308:45:263
1470027992018,1cyclictest0-21swapper/307:47:213
1470027992018,1cyclictest0-21swapper/307:44:503
1470027992018,1cyclictest0-21swapper/307:38:483
147002799200,8cyclictest1566137-21/usr/sbin/munin11:40:153
147002799200,1cyclictest3056-21PK-Backend08:13:293
147002799200,1cyclictest0-21swapper/311:00:333
147002799200,19cyclictest3056-21PK-Backend11:23:443
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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