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2026-03-29 - 14:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 rack7slot7s.osadl.org (updated Sun Mar 29, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3218529667,8sleep20-21swapper/207:05:202
62528976,9sleep00-21swapper/007:05:370
83728267,8sleep30-21swapper/307:08:263
87228164,13sleep10-21swapper/107:08:521
164202600,1sleep216411-21ssh12:15:182
1056994339,3cyclictest25166-21kworker/3:012:21:033
104999281,2cyclictest0-21swapper/112:35:121
105299270,26cyclictest0-21swapper/210:02:142
1056992622,3cyclictest16219-21kworker/3:210:25:133
105699240,23cyclictest16219-21kworker/3:211:34:433
105299240,18cyclictest0-21swapper/212:31:172
1056992320,2cyclictest25166-21kworker/3:012:17:033
105299230,0cyclictest0-21swapper/210:35:032
104699230,15cyclictest0-21swapper/009:55:120
105699221,21cyclictest16219-21kworker/3:210:40:323
105699220,21cyclictest16219-21kworker/3:211:29:033
1052992222,0cyclictest0-21swapper/209:34:442
105299220,22cyclictest0-21swapper/211:57:092
105299220,19cyclictest0-21swapper/209:16:002
1056992119,2cyclictest25166-21kworker/3:012:07:433
1056992119,2cyclictest16219-21kworker/3:211:46:133
105699210,21cyclictest16219-21kworker/3:211:53:023
105699210,21cyclictest16219-21kworker/3:210:53:133
1052992120,1cyclictest0-21swapper/209:39:222
105299210,3cyclictest0-21swapper/209:52:292
105299210,1cyclictest26066-21diskmemload12:12:132
1056992018,2cyclictest25166-21kworker/3:012:04:533
1056992018,2cyclictest16219-21kworker/3:211:00:533
1056992018,2cyclictest16219-21kworker/3:210:35:033
105699200,19cyclictest16219-21kworker/3:210:30:333
1052992012,2cyclictest32-21ksoftirqd/208:50:142
104999200,19cyclictest0-21swapper/109:15:121
104699200,1cyclictest0-21swapper/011:23:550
1056991918,1cyclictest16219-21kworker/3:210:49:333
1056991917,2cyclictest16219-21kworker/3:210:19:533
1056991916,3cyclictest16219-21kworker/3:210:08:433
105699191,3cyclictest0-21swapper/311:15:063
105699191,18cyclictest16219-21kworker/3:211:24:233
1052991912,2cyclictest23172-21wc09:45:262
105299190,16cyclictest0-21swapper/209:57:132
105299190,14cyclictest0-21swapper/210:40:102
105299190,14cyclictest0-21swapper/207:45:142
1049991917,1cyclictest0-21swapper/109:51:201
104999190,19cyclictest0-21swapper/110:17:231
104999190,18cyclictest0-21swapper/111:39:501
104699195,7cyclictest11745-21grep08:40:000
1056991816,2cyclictest25166-21kworker/3:012:25:233
1056991816,2cyclictest16219-21kworker/3:211:40:333
1052991810,2cyclictest24079-21grep12:20:142
104999180,18cyclictest0-21swapper/111:19:201
104999180,18cyclictest0-21swapper/107:55:251
104699180,15cyclictest0-21swapper/012:05:260
105699173,7cyclictest16619-21ssh12:35:133
1056991715,2cyclictest16219-21kworker/3:211:12:433
105299170,17cyclictest0-21swapper/212:29:262
105299170,16cyclictest0-21swapper/209:40:452
1049991716,1cyclictest0-21swapper/111:54:011
1049991714,2cyclictest38150irq/131-snd_hda12:21:571
104999170,1cyclictest0-21swapper/110:57:501
104999170,17cyclictest0-21swapper/112:26:391
104699170,1cyclictest0-21swapper/011:25:220
1056991615,1cyclictest16219-21kworker/3:209:40:213
105699160,1cyclictest0-21swapper/311:59:273
105299164,1cyclictest141rcu_preempt10:31:502
105299160,16cyclictest0-21swapper/212:36:392
105299160,13cyclictest0-21swapper/211:00:162
104999160,1cyclictest0-21swapper/111:44:441
104699166,5cyclictest9964-21apache_volume10:55:120
104699160,10cyclictest20886-21basename09:45:010
292342150,0chrt0-21swapper/309:30:183
105299150,2cyclictest0-21swapper/210:10:142
1049991513,1cyclictest0-21swapper/111:27:461
104999151,1cyclictest27124-21chrt12:02:271
104999150,1cyclictest0-21swapper/110:50:371
104999150,14cyclictest0-21swapper/110:05:381
104699154,6cyclictest19900-21awk09:25:140
1046991515,0cyclictest0-21swapper/010:06:420
104699150,14cyclictest0-21swapper/011:38:580
142602140,0sleep30-21swapper/311:35:253
105699149,3cyclictest32508-21tr10:10:213
105699141,6cyclictest0-21swapper/312:30:023
1056991413,1cyclictest0-21swapper/312:10:413
1052991413,1cyclictest0-21swapper/210:57:512
1052991411,2cyclictest2740-21tr08:20:142
1052991410,3cyclictest26066-21diskmemload11:49:262
1052991410,3cyclictest20465-21sort11:20:162
105299140,14cyclictest0-21swapper/211:06:162
105299140,14cyclictest0-21swapper/209:21:242
104999148,5cyclictest22007-21basename12:00:001
104999142,5cyclictest0-21swapper/109:30:161
1049991413,1cyclictest25-21ksoftirqd/110:12:321
1049991410,3cyclictest38150irq/131-snd_hda07:45:151
104999140,1cyclictest0-21swapper/109:20:201
104999140,13cyclictest0-21swapper/110:42:151
104699142,5cyclictest0-21swapper/011:10:010
1046991411,2cyclictest24545-21cron12:40:000
1046991410,3cyclictest30842-21ls11:45:200
105699138,4cyclictest11677-21cat10:55:263
105699135,6cyclictest0-21swapper/310:20:123
105699132,6cyclictest27750-21apt-get08:05:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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