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2025-12-08 - 02:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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 rack5slot3s.osadl.org (updated Sun Dec 07, 2025 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
72602239163,24sleep20-21swapper/207:07:202
72442238163,24sleep30-21swapper/307:07:083
71582235159,24sleep00-21swapper/007:06:000
73092204170,22sleep10-21swapper/107:07:581
38172590,1sleep00-21swapper/010:40:130
175892520,3sleep230-21rcuc/211:10:172
7559993519,6cyclictest0-21swapper/010:06:340
7565993420,4cyclictest10346-21unixbench_singl12:05:271
7570993128,2cyclictest0-21swapper/211:41:062
756599311,8cyclictest0-21swapper/110:09:051
7565993118,9cyclictest0-21swapper/107:20:151
7565993023,2cyclictest0-21swapper/111:00:261
7565993016,9cyclictest0-21swapper/110:19:071
755999303,21cyclictest0-21swapper/011:49:190
756599299,2cyclictest0-21swapper/110:00:271
7565992916,8cyclictest0-21swapper/110:42:501
7565992915,9cyclictest0-21swapper/108:48:171
7565992915,9cyclictest0-21swapper/108:48:161
7565992914,9cyclictest0-21swapper/107:44:421
7565992914,9cyclictest0-21swapper/107:44:421
756599291,26cyclictest0-21swapper/111:50:291
7559992917,2cyclictest0-21swapper/009:40:170
755999291,20cyclictest0-21swapper/010:36:330
164312291,11sleep10-21swapper/112:20:221
95752281,2sleep29576-21sshd07:13:142
757099287,2cyclictest29674-21kworker/2:012:19:252
756599283,3cyclictest836-21runrttasks09:02:431
7565992815,8cyclictest0-21swapper/112:36:141
7565992815,8cyclictest0-21swapper/112:05:001
7565992815,8cyclictest0-21swapper/109:34:411
7565992815,8cyclictest0-21swapper/108:36:361
7565992814,9cyclictest0-21swapper/111:32:361
7565992814,9cyclictest0-21swapper/107:15:171
756599281,24cyclictest26037-21/usr/sbin/munin07:50:151
756599281,24cyclictest25518-21awk11:30:021
755999280,6cyclictest0-21swapper/010:32:310
23502280,4sleep02352-21timerwakeupswit09:20:280
757699272,8cyclictest29221-21df_inode09:10:143
757099272,14cyclictest0-21swapper/211:20:192
756599274,3cyclictest0-21swapper/111:48:451
7565992721,3cyclictest14634-21snmpd09:59:131
7565992716,6cyclictest0-21swapper/107:13:401
7565992714,8cyclictest0-21swapper/112:32:371
7565992714,8cyclictest0-21swapper/112:16:401
7565992714,8cyclictest0-21swapper/107:48:391
7565992714,8cyclictest0-21swapper/107:39:321
756599271,3cyclictest18917-21perf11:15:011
7565992713,8cyclictest0-21swapper/108:05:201
7565992712,4cyclictest1980-21ntp_states09:20:241
756599271,20cyclictest0-21swapper/110:28:001
756599271,12cyclictest10106-21munin-run10:55:011
755999271,9cyclictest0-21swapper/009:13:180
755999271,3cyclictest22599-21sensors11:20:250
7559992712,8cyclictest14634-21snmpd11:39:300
755999271,20cyclictest0-21swapper/010:20:300
755999271,19cyclictest0-21swapper/011:54:460
757699266,9cyclictest41-21ksoftirqd/311:20:023
757699265,6cyclictest848-21sssd_nss11:40:183
757699260,13cyclictest4075-21kworker/u8:011:55:163
757099265,5cyclictest29674-21kworker/2:011:46:252
7570992611,9cyclictest0-21swapper/209:44:312
756599262,21cyclictest3786-21hddtemp_smartct09:25:171
7565992615,7cyclictest0-21swapper/109:53:261
7565992615,6cyclictest0-21swapper/108:41:521
756599261,4cyclictest0-21swapper/108:28:571
7565992614,8cyclictest0-21swapper/108:24:181
7565992614,8cyclictest0-21swapper/108:00:121
7565992614,7cyclictest0-21swapper/111:55:251
7565992614,7cyclictest0-21swapper/111:15:291
756599261,22cyclictest2482-21/usr/sbin/munin08:10:151
7565992611,4cyclictest6261-21df10:45:131
755999267,5cyclictest0-21swapper/012:11:080
755999264,18cyclictest0-21swapper/012:24:050
755999263,2cyclictest0-21swapper/009:35:280
7559992618,2cyclictest28644-21diskmemload10:49:210
7559992618,1cyclictest0-21swapper/007:45:190
755999261,5cyclictest7-21ksoftirqd/012:36:180
755999261,19cyclictest0-21swapper/011:41:160
755999261,10cyclictest0-21swapper/012:33:440
755999260,5cyclictest0-21swapper/011:33:550
757699254,11cyclictest26085-21diskstats11:30:163
757699253,3cyclictest0-21swapper/310:50:153
757099259,3cyclictest22552-1kworker/u9:109:23:312
757099251,13cyclictest29951-21ntp_states09:10:232
7570992511,3cyclictest0-21swapper/208:40:152
757099251,11cyclictest0-21swapper/210:30:202
7565992517,3cyclictest0-21swapper/109:07:111
7565992515,6cyclictest0-21swapper/111:35:201
7565992515,3cyclictest0-21swapper/111:08:181
7565992514,7cyclictest0-21swapper/112:25:061
7565992514,7cyclictest0-21swapper/110:32:301
7565992514,6cyclictest0-21swapper/109:43:391
7565992513,3cyclictest0-21swapper/109:45:051
7565992513,3cyclictest0-21swapper/109:36:011
7565992513,3cyclictest0-21swapper/109:17:201
7565992512,7cyclictest0-21swapper/107:55:571
7565992512,2cyclictest0-21swapper/110:10:201
756599251,21cyclictest1885-21diskstats10:35:161
7565992511,8cyclictest0-21swapper/108:58:261
7565992511,8cyclictest0-21swapper/108:30:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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