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2026-06-26 - 21:26

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 Fri Jun 26, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12343211692,19sleep00-21swapper/007:09:120
12129211193,12sleep20-21swapper/207:06:252
12292210988,16sleep10-21swapper/107:08:331
12393210888,15sleep30-21swapper/307:09:513
191872970,0sleep20-21swapper/212:28:252
53972540,1sleep31243699cyclictest11:37:483
170302300,1sleep30-21swapper/310:05:443
271442280,1sleep2301ktimersoftd/212:36:232
270752230,0sleep30-21swapper/310:16:233
273012220,0sleep20-21swapper/212:01:282
1243699211,2cyclictest0-21swapper/309:20:103
29572200,0sleep00-21swapper/009:16:030
1243499200,18cyclictest0-21swapper/110:05:101
116122190,0sleep00-21swapper/011:45:020
1243699181,15cyclictest24683-21ssh12:35:003
12433991815,2cyclictest14404-21kworker/u8:011:00:040
1243699171,14cyclictest8264-21grep09:56:043
12433991714,2cyclictest4718-21kworker/u8:212:29:040
12436991611,3cyclictest30299-21grep11:30:143
12435991613,2cyclictest27504-21kworker/u8:211:55:042
12435991613,2cyclictest23616-21kworker/u8:012:14:052
12434991611,3cyclictest2739-21grep12:10:171
1243499161,13cyclictest0-21swapper/107:45:061
1243399161,13cyclictest31022-21ntp_states11:30:190
1243399160,14cyclictest29867-21munin-node0
1243699151,2cyclictest0-21swapper/312:06:413
1243699151,12cyclictest402-21ssh10:57:513
1243699151,12cyclictest1275-21munin-run09:50:003
12436991510,3cyclictest18870-21ssh11:17:333
12436991510,3cyclictest0-21swapper/311:51:123
12435991512,2cyclictest2180-21kworker/u8:011:38:012
12435991512,2cyclictest0-21swapper/210:30:592
1243599151,12cyclictest7471-21diskstats11:40:122
1243599150,13cyclictest20714-21kworker/2:212:30:152
1243599150,13cyclictest1969-21df_abs09:50:132
12433991512,2cyclictest27288-21kworker/u8:210:14:040
1243399151,12cyclictest8333-21ssh09:21:350
12436991411,2cyclictest0-21swapper/307:50:133
1243699140,12cyclictest21726-21ssh11:55:333
1243699140,12cyclictest10383-21kworker/u8:108:25:043
1243699140,12cyclictest0-21swapper/311:41:033
1243599141,2cyclictest25193-21cut07:40:142
12435991411,2cyclictest0-21swapper/211:07:292
12435991411,2cyclictest0-21swapper/210:20:592
1243599140,2cyclictest0-21swapper/207:45:112
1243599140,12cyclictest16259-21ssh11:50:082
1243599140,12cyclictest13687-21diskmemload10:36:562
1243599140,12cyclictest0-21swapper/209:58:442
1243599140,12cyclictest0-21swapper/209:20:102
12434991411,2cyclictest0-21swapper/110:50:101
12434991410,2cyclictest207150irq/24-eth111:40:091
12434991410,2cyclictest0-21swapper/107:50:171
1243499140,13cyclictest0-21swapper/111:10:201
1243499140,12cyclictest15657-21munin-node1
1243499140,12cyclictest0-21swapper/112:31:011
1243499140,12cyclictest0-21swapper/112:27:041
1243499140,12cyclictest0-21swapper/109:55:131
1243499140,12cyclictest0-21swapper/109:29:201
1243499140,12cyclictest0-21swapper/108:20:501
1243499140,12cyclictest0-21swapper/107:11:011
1243499140,12cyclictest0-21swapper/107:11:011
12433991411,2cyclictest27504-21kworker/u8:211:58:050
12433991411,2cyclictest27504-21kworker/u8:210:53:040
12433991411,2cyclictest10592-21kworker/u8:112:39:040
12433991411,2cyclictest0-21swapper/011:05:140
12433991411,2cyclictest0-21swapper/010:36:040
1243399140,2cyclictest17830-21ssh10:06:240
1243399140,12cyclictest5540-21ssh11:38:010
1243399140,12cyclictest28592-21diskmemload12:10:150
116412140,1sleep028592-21diskmemload09:25:170
207632130,2sleep00-21swapper/008:50:120
12436991310,2cyclictest0-21swapper/312:20:533
12436991310,2cyclictest0-21swapper/311:22:323
12436991310,2cyclictest0-21swapper/311:03:433
12436991310,2cyclictest0-21swapper/310:33:023
12436991310,2cyclictest0-21swapper/310:03:113
12436991310,2cyclictest0-21swapper/309:43:133
12436991310,2cyclictest0-21swapper/309:19:033
1243699130,2cyclictest28592-21diskmemload09:50:523
1243699130,2cyclictest0-21swapper/310:25:423
1243699130,12cyclictest0-21swapper/310:45:203
1243699130,11cyclictest6297-21copy12:15:033
1243699130,11cyclictest0-21swapper/310:11:213
1243699130,11cyclictest0-21swapper/309:11:133
12435991310,2cyclictest21315-21kworker/u8:009:45:042
12435991310,2cyclictest0-21swapper/212:20:442
12435991310,2cyclictest0-21swapper/211:30:092
12435991310,2cyclictest0-21swapper/211:22:492
12435991310,2cyclictest0-21swapper/211:11:012
12435991310,2cyclictest0-21swapper/211:00:122
12435991310,2cyclictest0-21swapper/210:56:272
12435991310,2cyclictest0-21swapper/210:45:172
12435991310,2cyclictest0-21swapper/210:40:192
12435991310,2cyclictest0-21swapper/210:40:192
12435991310,2cyclictest0-21swapper/210:16:542
12435991310,2cyclictest0-21swapper/210:10:272
12435991310,2cyclictest0-21swapper/210:05:292
12435991310,2cyclictest0-21swapper/210:02:472
12435991310,2cyclictest0-21swapper/209:40:122
12435991310,2cyclictest0-21swapper/209:15:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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