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2026-05-09 - 17:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Sat May 09, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15810211894,19sleep00-21swapper/007:09:330
1755521150,1sleep217553-21grep08:31:032
15756211395,12sleep30-21swapper/307:08:523
15802210180,15sleep20-21swapper/207:09:272
15801210081,14sleep10-21swapper/107:09:261
134092790,0sleep10-21swapper/110:34:211
83102660,0sleep20-21swapper/209:18:262
181242260,1sleep30-21swapper/308:35:003
310242240,0sleep00-21swapper/012:37:500
192572240,0sleep00-21swapper/007:16:000
1587399210,2cyclictest0-21swapper/112:20:051
15873991913,5cyclictest9667-21kworker/u8:011:42:051
73492180,1sleep30-21swapper/309:51:543
73492180,1sleep30-21swapper/309:51:533
1587499183,13cyclictest32184-21diskmemload09:56:092
1587499183,13cyclictest0-21swapper/210:25:202
15873991815,2cyclictest30118-21kworker/u8:012:05:051
70832170,1sleep10-21swapper/109:51:281
70832170,1sleep10-21swapper/109:51:271
1587599171,14cyclictest18288-21sh09:29:303
1587499173,13cyclictest20846-21ssh12:26:102
1587499172,3cyclictest0-21swapper/207:40:122
1587499171,14cyclictest0-21swapper/211:25:142
1587299173,2cyclictest12660-21df_abs08:20:140
1587299173,12cyclictest101ktimersoftd/012:02:500
1587599163,11cyclictest3728-21runrttasks11:45:313
1587499162,4cyclictest0-21swapper/210:56:482
15874991612,3cyclictest0-21swapper/211:34:312
15874991611,4cyclictest23782-21sh10:45:122
1587499160,14cyclictest24199-21latency09:35:172
1587299161,2cyclictest26902-21ssh09:38:400
15872991610,4cyclictest6234-21munin-node0
1587599151,8cyclictest4649-21ssh11:34:593
1587599151,3cyclictest4072-21ssh09:49:133
1587599151,3cyclictest4072-21ssh09:49:123
1587499153,10cyclictest0-21swapper/211:42:072
1587499152,12cyclictest0-21swapper/212:31:222
1587499151,12cyclictest1582-21ssh09:11:012
1587499151,12cyclictest0-21swapper/211:50:162
15873991512,2cyclictest7411-21kworker/u8:009:22:041
15873991512,2cyclictest14262-21kworker/u8:109:40:051
15873991512,2cyclictest12309-21kworker/u8:010:35:041
1587399151,12cyclictest2052-21grep10:56:041
1587399151,12cyclictest0-21swapper/110:50:531
15873991510,3cyclictest3728-21runrttasks08:20:121
1587399150,11cyclictest0-21swapper/110:28:251
1587299152,2cyclictest101ktimersoftd/009:30:150
1587299152,2cyclictest0-21swapper/011:05:480
1587299151,2cyclictest101ktimersoftd/010:15:410
15872991512,2cyclictest101ktimersoftd/010:41:450
1587299151,12cyclictest101ktimersoftd/012:12:580
1587299151,12cyclictest101ktimersoftd/011:33:360
1587299151,12cyclictest101ktimersoftd/010:28:540
1587299150,13cyclictest29663-21sensors_fan09:41:010
1587299150,13cyclictest0-21swapper/011:57:200
1587599142,6cyclictest0-21swapper/309:15:003
15875991411,2cyclictest0-21swapper/310:50:113
15875991411,2cyclictest0-21swapper/310:35:573
15875991411,2cyclictest0-21swapper/309:33:403
15875991410,2cyclictest0-21swapper/310:30:103
1587599140,3cyclictest17826-21seq10:04:023
1587599140,13cyclictest0-21swapper/311:38:203
1587599140,13cyclictest0-21swapper/309:12:543
1587599140,12cyclictest0-21swapper/311:07:003
1587599140,12cyclictest0-21swapper/310:45:593
1587599140,12cyclictest0-21swapper/309:55:193
1587499143,10cyclictest0-21swapper/212:02:132
1587499141,12cyclictest0-21swapper/212:06:232
15874991410,3cyclictest0-21swapper/210:09:352
1587499140,3cyclictest0-21swapper/208:35:202
1587399141,3cyclictest26357-21munin-node1
15873991411,2cyclictest14262-21kworker/u8:109:34:041
1587399141,11cyclictest24618-21cut09:35:301
15873991410,2cyclictest0-21swapper/112:25:501
1587399140,3cyclictest0-21swapper/110:17:381
1587399140,2cyclictest0-21swapper/111:32:051
1587399140,12cyclictest3798-21ssh10:23:471
1587399140,12cyclictest0-21swapper/107:30:201
1587399140,10cyclictest0-21swapper/112:10:371
1587299142,11cyclictest11559-21ssh10:31:170
1587299141,2cyclictest22721-21ssh11:54:180
15872991411,2cyclictest3861-21ssh09:48:520
15872991411,2cyclictest3861-21ssh09:48:510
15872991411,2cyclictest21426-21ssh11:17:210
15872991411,2cyclictest19442-1kworker/u9:210:09:450
15872991411,2cyclictest101ktimersoftd/012:21:320
15872991411,2cyclictest101ktimersoftd/010:22:320
15872991411,2cyclictest101ktimersoftd/009:22:560
1587299140,2cyclictest0-21swapper/010:46:590
1587299140,12cyclictest0-21swapper/012:30:330
79492130,2sleep10-21swapper/111:02:511
1587599132,6cyclictest0-21swapper/312:20:013
1587599132,6cyclictest0-21swapper/310:10:003
15875991310,2cyclictest0-21swapper/312:38:353
15875991310,2cyclictest0-21swapper/311:21:503
15875991310,2cyclictest0-21swapper/311:15:313
15875991310,2cyclictest0-21swapper/311:13:203
15875991310,2cyclictest0-21swapper/311:00:433
15875991310,2cyclictest0-21swapper/310:26:433
15875991310,2cyclictest0-21swapper/310:10:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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