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2026-04-15 - 23:03

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 Wed Apr 15, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
227562237161,25sleep00-21swapper/007:06:320
227972203168,23sleep10-21swapper/107:07:061
226762202165,24sleep30-21swapper/307:05:313
230182201164,24sleep20-21swapper/207:09:572
23115999690,3cyclictest32163-21df09:55:132
23115999591,3cyclictest0-21swapper/208:01:482
23115997167,3cyclictest0-21swapper/209:49:182
23115996461,2cyclictest0-21swapper/210:07:252
32002620,1sleep10-21swapper/112:30:101
23115995653,2cyclictest0-21swapper/211:59:392
23115995148,2cyclictest0-21swapper/211:29:582
23115994745,1cyclictest0-21swapper/209:04:592
305832460,4sleep30-21swapper/307:25:013
2310199412,29cyclictest7031-21/usr/sbin/munin07:45:180
2310199400,28cyclictest0-21swapper/007:40:130
2312299391,11cyclictest23035-21/usr/sbin/munin09:35:213
2310199392,32cyclictest30141-40dnf07:22:120
2310199391,30cyclictest17678-21/usr/sbin/munin11:50:230
2310199385,29cyclictest28804-21idleruntime-cro08:35:010
2310199381,29cyclictest20837-21/usr/sbin/munin09:30:170
2310199381,17cyclictest31249-21fschecks_count12:20:150
2312299371,11cyclictest30599-21/usr/sbin/munin07:25:223
2312299371,11cyclictest30599-21/usr/sbin/munin07:25:223
2310199373,26cyclictest87550irq/128-enp1s0-07:15:170
2312299368,3cyclictest23657-21/usr/sbin/munin10:50:183
2312299361,6cyclictest4842-21diskstats11:20:123
2312299361,3cyclictest31940-21ntp_states12:20:213
2312299361,10cyclictest7646-21/usr/sbin/munin09:00:133
2310199361,5cyclictest670-21grep11:10:160
2310199361,26cyclictest6070-21/usr/sbin/munin10:10:260
2312299358,4cyclictest27819-21idleruntime-cro11:00:013
2312299357,7cyclictest0-21swapper/310:35:153
2312299351,5cyclictest0-21swapper/309:26:533
2312299351,10cyclictest0-21swapper/309:22:103
2310199352,21cyclictest87350irq/126-enp1s0-12:25:150
2310199351,25cyclictest12052-21/usr/sbin/munin09:10:260
2312299347,4cyclictest0-21swapper/312:09:503
2312299347,3cyclictest11820-21diskmemload11:13:063
2312299346,3cyclictest87350irq/126-enp1s0-12:20:023
2312299345,3cyclictest12050irq/123-ahci[0012:35:023
23122993414,17cyclictest21615-21tr10:45:143
23122993412,19cyclictest22256-21cat08:20:013
23122993412,19cyclictest12667-21/usr/sbin/munin10:25:203
2312299341,11cyclictest0-21swapper/309:51:283
2312299341,10cyclictest0-21swapper/309:41:403
2311099341,12cyclictest0-21swapper/107:38:551
23101993416,14cyclictest20813-21grep08:15:160
2312299336,3cyclictest0-21swapper/309:58:173
2312299335,3cyclictest87350irq/126-enp1s0-11:25:133
2312299333,3cyclictest7074-21latency_hist12:40:023
2312299331,9cyclictest0-21swapper/310:08:263
23122993317,13cyclictest28447-21sh12:15:013
23122993317,13cyclictest28447-21sh12:15:013
2312299331,6cyclictest28587-21/usr/sbin/munin09:45:223
2312299331,29cyclictest808-21snmpd10:32:013
23122993311,19cyclictest13623-21/usr/sbin/munin08:00:183
2312299331,10cyclictest0-21swapper/311:58:203
2312299331,10cyclictest0-21swapper/311:36:493
2310199333,3cyclictest87350irq/126-enp1s0-09:40:110
2310199330,5cyclictest0-21swapper/009:50:140
2312299323,6cyclictest11820-21diskmemload10:23:263
2312299321,7cyclictest31118-21cat08:40:013
2312299321,6cyclictest0-21swapper/309:32:123
2312299321,12cyclictest0-21swapper/312:02:083
2312299321,10cyclictest0-21swapper/310:17:383
2312299320,9cyclictest0-21swapper/312:26:473
2310199329,20cyclictest31428-21proc_pri11:05:230
2310199323,3cyclictest87550irq/128-enp1s0-10:20:140
2310199321,5cyclictest5715-21runrttasks10:08:290
2310199321,5cyclictest25026-21awk09:40:000
2310199321,5cyclictest0-21swapper/009:45:110
2310199321,3cyclictest28876-21cstates12:15:120
2312299313,3cyclictest8099-21ntpq07:45:223
2312299311,2cyclictest15317-21sh09:15:213
23122993111,3cyclictest5450-21/usr/sbin/munin08:55:233
23122993111,3cyclictest20320-21ntpq10:40:213
23122993111,17cyclictest17269-21cat08:05:263
2312299311,10cyclictest0-21swapper/310:12:433
2310199318,15cyclictest808-21snmpd11:42:140
2310199317,21cyclictest5219-21turbostat08:55:010
2310199317,20cyclictest827-21runrttasks10:40:160
2310199313,3cyclictest88950irq/132-enp2s0-11:39:170
2310199313,25cyclictest19538-21grep08:10:250
2310199312,26cyclictest491-21cpuspeed_turbos07:30:100
2310199311,5cyclictest14363-21/usr/sbin/munin08:00:170
2310199311,3cyclictest2910-21/usr/sbin/munin12:30:180
2310199311,21cyclictest87350irq/126-enp1s0-11:00:190
2310199311,21cyclictest87350irq/126-enp1s0-11:00:190
23101993112,16cyclictest1666-21/usr/sbin/munin10:00:230
23101993111,17cyclictest4489-21/usr/sbin/munin11:20:220
2312299303,5cyclictest1379-21diskstats08:45:133
2312299301,4cyclictest0-21swapper/310:00:243
2312299301,27cyclictest0-21swapper/311:00:213
2312299301,27cyclictest0-21swapper/311:00:213
2312299301,26cyclictest30260-21/usr/sbin/munin11:05:163
23122993010,17cyclictest27927-21/usr/sbin/munin08:30:223
2311099306,3cyclictest0-21swapper/111:10:431
2310199308,19cyclictest827-21runrttasks08:38:570
2310199306,1cyclictest0-21swapper/009:55:150
2310199303,3cyclictest12667-21/usr/sbin/munin10:25:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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