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2026-03-07 - 10:15

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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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  Congatec
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 rackeslot8s.osadl.org (updated Fri Mar 06, 2026 11:37:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1371991815,1cyclictest0-21swapper/311:05:123
137199181,13cyclictest218012-21turbostat09:50:013
137199176,8cyclictest307425-21turbostat10:50:013
137199176,8cyclictest210610-21turbostat09:45:003
1371991714,1cyclictest0-21swapper/309:55:103
1371991714,1cyclictest0-21swapper/309:55:103
1371991714,1cyclictest0-21swapper/308:25:163
137199171,12cyclictest93478-21turbostat08:20:003
173198160,4rtkit-daemon293029-21diskstats10:40:120
1371991613,1cyclictest0-21swapper/310:25:203
1371991613,1cyclictest0-21swapper/307:50:003
137199161,11cyclictest41516-21taskset07:35:253
137199155,7cyclictest3268412sleep311:00:193
137199155,7cyclictest3146902sleep310:54:423
1371991513,1cyclictest0-21swapper/309:50:213
1371991513,0cyclictest0-21swapper/310:15:523
1371991513,0cyclictest0-21swapper/310:15:513
1371991513,0cyclictest0-21swapper/309:06:273
1371991513,0cyclictest0-21swapper/308:40:203
1371991512,1cyclictest0-21swapper/310:30:133
1371991512,1cyclictest0-21swapper/309:18:433
1371991512,1cyclictest0-21swapper/309:01:053
137199151,11cyclictest22974-21taskset07:25:123
137199151,11cyclictest158447-21taskset09:10:013
3314752141,4sleep0332879-21cut11:05:170
1790552140,5sleep0179102-21ntp_states09:20:220
137199145,6cyclictest3587352sleep311:22:313
137199144,7cyclictest193762sleep307:20:193
137199141,9cyclictest2343582sleep310:00:153
137199141,9cyclictest188637-21taskset09:30:143
1371991413,0cyclictest0-21swapper/311:33:483
1371991413,0cyclictest0-21swapper/307:30:123
1371991412,1cyclictest0-21swapper/309:25:583
1371991412,0cyclictest0-21swapper/311:28:403
1371991412,0cyclictest0-21swapper/310:21:503
1371991411,1cyclictest0-21swapper/308:55:153
1371991411,1cyclictest0-21swapper/308:05:213
1371991411,1cyclictest0-21swapper/308:02:493
137199141,10cyclictest7730-21turbostat07:15:013
137199141,10cyclictest67318-21taskset07:55:243
137199141,10cyclictest48451-21turbostat07:45:003
137199141,10cyclictest285442-21chrt10:35:133
137199141,10cyclictest246048-21taskset10:05:203
137199140,10cyclictest113956-21taskset08:35:163
1939842131,7sleep0194023-21ntpq09:30:230
173198130,8rtkit-daemon137426-21/usr/sbin/munin08:50:181
173198130,4rtkit-daemon351478-21ssh11:18:170
137199131,9cyclictest344771-21taskset11:15:053
137199131,9cyclictest131421-21taskset08:45:263
137199131,9cyclictest106735-21taskset08:30:143
137199131,8cyclictest292870-21taskset10:40:103
137199131,8cyclictest173737-21taskset09:20:113
1371991312,0cyclictest0-21swapper/308:10:373
1371991311,1cyclictest0-21swapper/310:10:593
1371991310,1cyclictest0-21swapper/309:38:013
1371991310,1cyclictest0-21swapper/307:15:013
137199130,9cyclictest1323612sleep308:50:103
10062130,3sleep30-21swapper/307:07:173
2858152120,4sleep2286288-21sed10:35:172
173198120,7rtkit-daemon80587-21pluginstate08:10:001
173198120,4rtkit-daemon7920-21munin-node07:57:321
137199129,1cyclictest0-21swapper/308:20:183
137199121,9cyclictest321037-21chrt10:55:303
137199121,8cyclictest55119-21taskset07:50:123
1371991210,1cyclictest0-21swapper/311:10:393
2458982110,8sleep2246047-21ld10:05:192
1739572110,8sleep1174156-21iwlist09:20:141
173198110,4rtkit-daemon453-21wpa_supplicant09:00:341
923422101,5sleep192483-21ntpq08:15:191
41941872100,5sleep04194230-21ntpq07:05:260
3575802102,4sleep1357626-21ntpq11:20:211
3433232101,5sleep1343327-21ssh11:10:311
3294762101,6sleep0329477-21sh11:04:100
2844782101,2sleep10-21swapper/110:32:411
173198100,6rtkit-daemon53886-21ld07:45:201
173198100,6rtkit-daemon218922-21cut09:50:140
173198100,5rtkit-daemon42021-21munin-run07:40:001
173198100,2rtkit-daemon269547-21ssh10:22:062
98925291,5sleep298969-21ntpq08:20:212
93727291,4sleep193760-21apt-get08:20:121
73179290,6sleep273228-21ntpq08:00:212
55269291,5sleep00-21swapper/007:50:130
365874290,6sleep2365878-21ssh11:26:402
357735291,5sleep0357850-21python311:20:240
292830291,5sleep2292865-21ssh10:40:102
277735290,6sleep2277782-21pluginstate10:30:002
249701291,5sleep2250515-21ssh10:10:162
201391291,4sleep1201447-21ntpq09:35:211
181308290,6sleep0181382-21sort09:25:140
17319890,5rtkit-daemon643-21snmpd10:05:590
17319890,5rtkit-daemon643-21snmpd08:26:001
17319890,5rtkit-daemon239182-21tail10:00:240
17319890,5rtkit-daemon158207-21diskmemload11:10:410
17319890,5rtkit-daemon158207-21diskmemload09:31:262
17319890,5rtkit-daemon0-21swapper/010:47:150
17319890,4rtkit-daemon278224-21df_inode10:30:130
17319890,3rtkit-daemon500-21gmain10:17:262
17319890,3rtkit-daemon500-21gmain10:17:252
17319890,2rtkit-daemon165497-21ssh09:14:241
17319890,1rtkit-daemon0-21swapper/010:36:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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