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2026-04-04 - 18:50

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 Sat Apr 04, 2026 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2975729582,8sleep20-21swapper/207:06:472
2997228875,9sleep00-21swapper/007:09:360
2987628676,6sleep10-21swapper/107:08:191
2967627966,9sleep30-21swapper/307:05:443
32452570,1sleep10-21swapper/110:54:101
3010099300,29cyclictest23335-21sed11:05:262
30094992726,1cyclictest0-21swapper/011:33:010
30100992522,2cyclictest23890-21ntp_offset11:25:212
3010099250,24cyclictest0-21swapper/209:11:422
3009899250,1cyclictest0-21swapper/111:58:191
30100992311,3cyclictest32-21ksoftirqd/211:30:122
3010099222,14cyclictest2836-21hddtemp_smartct09:55:172
30100992220,2cyclictest94-21kswapd009:35:132
3010099221,20cyclictest0-21swapper/211:00:132
3010099220,1cyclictest0-21swapper/210:32:192
3009899223,10cyclictest0-21swapper/112:38:131
3009899223,10cyclictest0-21swapper/112:38:121
3009499221,6cyclictest0-21swapper/007:55:130
30104992120,1cyclictest0-21swapper/311:22:033
3009899212,17cyclictest23324-21diskmemload11:40:281
3009499211,1cyclictest0-21swapper/008:00:130
30094992111,7cyclictest0-21swapper/012:32:560
3010099200,1cyclictest0-21swapper/208:00:142
3010499190,0cyclictest0-21swapper/310:21:273
3010099191,18cyclictest0-21swapper/210:41:452
3010099190,19cyclictest0-21swapper/212:28:052
3009899190,19cyclictest0-21swapper/112:12:401
3010099186,11cyclictest0-21swapper/212:16:052
3010099180,3cyclictest0-21swapper/211:21:362
3010099180,1cyclictest0-21swapper/210:48:062
3009899181,17cyclictest23324-21diskmemload10:47:191
3010499172,13cyclictest0-21swapper/310:30:203
3010099171,1cyclictest0-21swapper/207:40:142
3010099170,0cyclictest0-21swapper/212:37:052
3010099170,0cyclictest0-21swapper/212:37:052
30098991715,1cyclictest0-21swapper/112:00:121
3009499175,6cyclictest20732-21apt-get09:05:000
3010499161,14cyclictest22624-21ssh11:25:143
3010499160,16cyclictest0-21swapper/310:03:593
3010099161,1cyclictest23324-21diskmemload10:24:092
3010099160,2cyclictest0-21swapper/209:24:062
3009899168,6cyclictest6107-21wc07:25:191
30098991614,1cyclictest0-21swapper/109:33:221
30098991613,2cyclictest0-21swapper/110:06:071
30098991613,0cyclictest0-21swapper/110:19:511
30104991512,2cyclictest27241-21turbostat.cron10:29:553
3010499151,1cyclictest30000-21memory10:50:193
3010499150,1cyclictest0-21swapper/309:49:203
3010499150,15cyclictest0-21swapper/311:06:133
3010099159,5cyclictest1892-21apache210:26:462
3010099153,9cyclictest0-21swapper/212:00:122
3010099150,15cyclictest0-21swapper/211:44:302
3010099150,15cyclictest0-21swapper/210:12:532
30098991514,1cyclictest0-21swapper/107:35:191
3009499156,8cyclictest12646-21sendmail-msp11:00:000
3009499150,8cyclictest25498-21idleruntime-cro09:49:590
3009499150,13cyclictest0-21swapper/011:54:440
3010499149,4cyclictest27702-21wc08:10:193
3010499147,6cyclictest6303-21munin-run11:35:003
3010499141,13cyclictest0-21swapper/312:39:053
3010499141,13cyclictest0-21swapper/312:39:053
3010499140,1cyclictest0-21swapper/309:35:413
30100991412,1cyclictest23324-21diskmemload10:04:232
3010099140,2cyclictest0-21swapper/211:16:432
3010099140,1cyclictest0-21swapper/210:55:382
30098991412,1cyclictest27347-21cut08:10:161
30098991410,3cyclictest10389-21grep08:40:271
3009899140,13cyclictest0-21swapper/109:15:421
3009499149,4cyclictest29404-21df10:50:150
3009499141,6cyclictest20958-21idleruntime-cro11:05:010
30094991411,3cyclictest0-21swapper/011:28:420
30094991410,3cyclictest16801-21ssh12:20:110
30094991410,2cyclictest29799-21grep10:30:250
30094991410,2cyclictest15741-21grep07:45:200
3009499140,13cyclictest5890-21cut07:25:170
3009499140,12cyclictest3463-21tail07:20:180
3010499139,3cyclictest18889-21grep10:05:153
3010499139,3cyclictest16261-21grep07:45:263
3010499139,3cyclictest14379-21munin-plugin-st07:45:003
3010499139,2cyclictest14062-21ls08:50:153
30104991310,2cyclictest30356-21tr08:15:223
30104991310,2cyclictest16289-21cron12:20:003
30104991310,2cyclictest14084-21sed10:40:253
3010499130,2cyclictest0-21swapper/310:15:153
3010499130,13cyclictest0-21swapper/311:13:493
3010099139,3cyclictest26135-21ntpq09:30:192
3010099139,3cyclictest23331-21apt09:10:002
3010099139,3cyclictest23331-21apt09:10:002
3010099139,3cyclictest11927-21tune2fs08:45:172
30100991310,2cyclictest32-21ksoftirqd/207:35:002
30100991310,2cyclictest24601-21cron12:25:012
30100991310,2cyclictest11049-21sed08:45:002
3010099130,1cyclictest0-21swapper/209:53:352
3010099130,12cyclictest1291-21tr12:30:142
3009899139,3cyclictest3205-21head09:55:201
3009899139,3cyclictest12026-21sed08:45:171
3009899139,2cyclictest8481-21wc08:40:011
3009899138,2cyclictest27312-21sh12:25:361
30098991313,0cyclictest0-21swapper/111:52:301
30098991310,2cyclictest30194-21sh12:08:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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