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2025-11-23 - 05:41

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 Sun Nov 23, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15256210187,10sleep10-21swapper/119:08:231
1421129480,9sleep30-21swapper/319:05:233
1524728164,13sleep20-21swapper/219:08:162
1507728169,8sleep00-21swapper/019:06:050
241102460,0sleep00-21swapper/022:27:280
15464992622,3cyclictest0-21swapper/122:45:141
1545799261,24cyclictest0-21swapper/022:58:340
15464992522,2cyclictest8092-21diskmemload22:55:161
15464992521,4cyclictest0-21swapper/122:20:391
15464992517,7cyclictest8092-21diskmemload23:32:381
15464992418,1cyclictest8092-21diskmemload23:36:441
15464992410,9cyclictest0-21swapper/123:40:141
1546999230,23cyclictest0-21swapper/223:14:562
1546999230,23cyclictest0-21swapper/222:44:562
1546999230,1cyclictest0-21swapper/223:41:152
15464992321,1cyclictest0-21swapper/122:02:261
15464992315,3cyclictest0-21swapper/122:28:331
1546999223,4cyclictest141rcu_preempt22:14:392
1546999220,22cyclictest0-21swapper/200:32:102
1546999220,21cyclictest0-21swapper/223:00:052
1546999220,18cyclictest0-21swapper/222:06:212
15457992221,1cyclictest0-21swapper/023:41:150
1547299210,20cyclictest0-21swapper/323:32:373
1546999210,21cyclictest0-21swapper/223:28:222
15464992117,3cyclictest0-21swapper/121:55:001
1545799215,3cyclictest0-21swapper/021:22:320
323512200,0sleep10-21swapper/122:33:371
1547299203,9cyclictest4608-21sh21:30:073
1547299200,20cyclictest0-21swapper/322:08:443
1546999200,20cyclictest0-21swapper/223:52:002
1546999200,20cyclictest0-21swapper/223:08:442
1546999200,20cyclictest0-21swapper/222:24:352
1546999200,18cyclictest0-21swapper/222:57:272
1546999200,16cyclictest0-21swapper/223:39:382
1546499207,9cyclictest0-21swapper/123:47:081
1546499207,10cyclictest13437-21processes20:10:231
1546499206,12cyclictest0-21swapper/123:19:501
15464992015,5cyclictest0-21swapper/122:09:571
15464992015,4cyclictest0-21swapper/100:20:081
15457992019,1cyclictest0-21swapper/023:35:400
1545799201,1cyclictest141rcu_preempt21:34:400
1547299198,10cyclictest7054-21unixbench-2d23:00:263
15469991913,6cyclictest0-21swapper/221:22:022
1546499198,9cyclictest0-21swapper/123:58:341
1546499196,12cyclictest0-21swapper/100:28:271
15464991916,2cyclictest0-21swapper/100:01:191
15464991916,1cyclictest8092-21diskmemload22:12:161
1546499190,18cyclictest0-21swapper/123:00:121
1545799197,7cyclictest12547-21diskstats23:50:160
15472991818,0cyclictest0-21swapper/321:42:173
1547299181,15cyclictest0-21swapper/322:32:043
1546999180,3cyclictest141rcu_preempt23:58:092
1546999180,18cyclictest0-21swapper/200:28:382
1546499187,9cyclictest0-21swapper/121:35:321
1546499187,10cyclictest0-21swapper/121:10:121
15464991814,3cyclictest0-21swapper/122:40:151
15464991814,3cyclictest0-21swapper/100:30:211
15464991812,5cyclictest0-21swapper/121:40:351
15464991811,5cyclictest0-21swapper/121:57:091
1545799180,18cyclictest0-21swapper/022:12:210
76482170,1sleep00-21swapper/023:00:530
15469991712,1cyclictest0-21swapper/221:11:502
1546499179,7cyclictest0-21swapper/121:21:061
1546499177,10cyclictest0-21swapper/123:51:181
15464991716,1cyclictest0-21swapper/123:20:331
15464991713,3cyclictest6539-21grep21:30:251
15464991713,3cyclictest0-21swapper/100:12:051
15464991711,5cyclictest0-21swapper/121:26:531
15457991717,0cyclictest0-21swapper/000:23:010
15457991716,1cyclictest0-21swapper/023:20:130
1545799170,17cyclictest0-21swapper/022:33:340
15469991615,1cyclictest0-21swapper/221:29:192
15469991615,1cyclictest0-21swapper/200:20:292
1546999160,1cyclictest0-21swapper/223:48:202
1546999160,15cyclictest0-21swapper/221:33:272
1546499165,10cyclictest0-21swapper/120:50:141
1546499164,7cyclictest0-21swapper/123:05:031
15464991613,2cyclictest8092-21diskmemload22:35:391
15464991610,5cyclictest13995-21wget00:15:141
15457991613,2cyclictest15480-21munin-plugin-st22:00:000
15457991610,6cyclictest0-21swapper/000:25:450
1547299158,7cyclictest8501-21/usr/sbin/munin21:10:213
1547299150,15cyclictest0-21swapper/321:37:303
1546999151,13cyclictest15926-21kworker/2:021:54:432
15469991510,2cyclictest32-21ksoftirqd/220:45:262
1546999150,14cyclictest0-21swapper/219:30:152
1546999150,12cyclictest0-21swapper/222:47:222
1546999150,12cyclictest0-21swapper/200:11:272
1546499159,5cyclictest6600-21fschecks_count21:05:171
1546499158,6cyclictest0-21swapper/120:25:301
1546499157,7cyclictest0-21swapper/123:13:151
1546499152,9cyclictest0-21swapper/119:30:151
15464991513,2cyclictest0-21swapper/121:45:211
15464991513,1cyclictest9432-21python00:35:261
15464991513,1cyclictest0-21swapper/120:45:151
15464991513,1cyclictest0-21swapper/120:10:001
15464991512,2cyclictest0-21swapper/121:15:141
15464991510,3cyclictest0-21swapper/119:55:261
1545799158,6cyclictest2344-21idleruntime-cro19:50:000
1547299142,1cyclictest141rcu_preempt23:15:573
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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