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2026-04-27 - 10:14

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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 rack0slot4s.osadl.org (updated Mon Apr 27, 2026 00:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15065572381366,4sleep140-21swapper/1419:07:186
15067282375366,6sleep20-21swapper/219:09:158
15065722370351,12sleep100-21swapper/1019:07:302
15066272365347,12sleep30-21swapper/319:08:129
15065822364344,13sleep150-21swapper/1519:07:357
15067082361321,32sleep60-21swapper/619:09:0312
15066542361341,13sleep80-21swapper/819:08:3314
15067972360320,14sleep50-21swapper/519:09:5011
15068072359321,30sleep110-21swapper/1119:09:563
15067892356336,13sleep00-21swapper/019:09:450
15065112354333,14sleep90-21swapper/919:06:4115
15067172353341,8sleep120-21swapper/1219:09:094
15065802353333,13sleep130-21swapper/1319:07:335
15067902351332,13sleep10-21swapper/119:09:461
15066842346326,13sleep70-21swapper/719:08:4813
15067642345325,13sleep40-21swapper/419:09:3310
150728299435,13cyclictest0-21swapper/1423:00:146
1507256993938,0cyclictest0-21swapper/521:20:1611
1507280993837,1cyclictest0-21swapper/1321:20:165
150728299364,24cyclictest0-21swapper/1422:49:156
150728299360,23cyclictest0-21swapper/1423:33:116
150728299350,22cyclictest0-21swapper/1419:20:346
1507280993433,1cyclictest1520227-21kworker/u32:5+flush-259:019:35:185
1507262993434,0cyclictest0-21swapper/720:18:5613
150725399340,32cyclictest0-21swapper/420:00:1410
150724799340,31cyclictest782-21systemd-journal21:16:228
150728299339,11cyclictest0-21swapper/1400:28:066
150727499330,30cyclictest0-21swapper/1123:25:173
1507262993333,0cyclictest1462144-21kworker/7:0-events19:19:2813
1507256993332,1cyclictest0-21swapper/523:18:0011
150724799330,32cyclictest0-21swapper/219:15:018
150728299321,30cyclictest0-21swapper/1423:14:006
1507280993232,0cyclictest0-21swapper/1323:05:205
1507280993232,0cyclictest0-21swapper/1321:42:425
150727799320,29cyclictest0-21swapper/1221:35:154
1507262993231,1cyclictest0-21swapper/720:29:0413
1507256993232,0cyclictest0-21swapper/523:53:5211
1507256993230,1cyclictest0-21swapper/523:55:3111
1507247993228,4cyclictest1774-21snmpd22:45:478
1507247993228,2cyclictest782-21systemd-journal19:11:578
150724799320,29cyclictest0-21swapper/222:30:208
150724799320,29cyclictest0-21swapper/221:07:408
150724799320,29cyclictest0-21swapper/221:07:408
150724799320,29cyclictest0-21swapper/220:06:468
150724799320,29cyclictest0-21swapper/219:40:268
150728299310,30cyclictest0-21swapper/1420:00:146
1507280993131,0cyclictest0-21swapper/1323:32:385
1507280993130,1cyclictest1774-21snmpd19:31:075
1507280993130,1cyclictest1774-21snmpd00:07:455
150727799310,30cyclictest0-21swapper/1200:05:384
150727499310,30cyclictest0-21swapper/1121:11:233
150727499310,30cyclictest0-21swapper/1100:01:193
1507271993130,1cyclictest1643646-21kworker/10:0+events22:06:342
1507271993130,1cyclictest1643646-21kworker/10:0+events22:02:232
1507271993130,1cyclictest1560952-21kworker/10:1+events20:34:262
1507271993129,1cyclictest1834577-21kworker/10:0+events00:34:082
1507271993129,1cyclictest1777050-21kworker/10:2+events23:46:462
1507271993129,1cyclictest1774-21snmpd20:14:272
1507271993129,1cyclictest1774-21snmpd19:29:402
1507271993129,1cyclictest1774-21snmpd00:03:202
1507271993129,1cyclictest1560952-21kworker/10:1+events21:17:502
1507271993129,1cyclictest1527416-21kworker/10:0+events20:06:022
150727199310,30cyclictest0-21swapper/1023:59:462
150727199310,30cyclictest0-21swapper/1023:05:152
150726899310,30cyclictest0-21swapper/920:50:5315
150726699310,30cyclictest0-21swapper/819:59:5614
1507256993131,0cyclictest0-21swapper/522:27:4611
1507256993130,1cyclictest1832367-21kworker/u32:3+events_unbound00:35:1611
150725399310,30cyclictest0-21swapper/422:49:3910
1507250993130,1cyclictest0-21swapper/323:53:289
1507247993127,3cyclictest782-21systemd-journal23:12:188
150724799310,30cyclictest0-21swapper/223:00:418
150724799310,2cyclictest782-21systemd-journal00:05:388
150724799310,28cyclictest0-21swapper/223:53:568
150724799310,28cyclictest0-21swapper/223:09:338
150724799310,28cyclictest0-21swapper/222:22:128
150724799310,28cyclictest0-21swapper/222:10:158
150724799310,28cyclictest0-21swapper/220:03:528
150724799310,28cyclictest0-21swapper/219:27:168
1507245993130,1cyclictest1774-21snmpd19:45:111
150724099310,30cyclictest0-21swapper/021:45:140
150728799300,30cyclictest0-21swapper/1523:17:577
150728799300,30cyclictest0-21swapper/1521:40:157
150728799300,29cyclictest0-21swapper/1520:33:067
1507282993029,1cyclictest1774-21snmpd19:53:476
1507282993029,1cyclictest1774-21snmpd19:32:406
1507282993019,11cyclictest0-21swapper/1421:54:206
150728299300,30cyclictest0-21swapper/1422:51:506
150728299300,30cyclictest0-21swapper/1400:02:076
150728299300,1cyclictest0-21swapper/1423:35:146
150728299300,1cyclictest0-21swapper/1420:28:126
1507280993030,0cyclictest0-21swapper/1322:04:245
1507280993028,2cyclictest1806114-21kworker/u32:2+events_unbound23:50:175
1507277993030,0cyclictest1823939-21mii-tool23:55:154
1507277993029,1cyclictest1774-21snmpd23:41:194
150727799300,29cyclictest0-21swapper/1200:02:314
150727799300,1cyclictest0-21swapper/1222:38:364
150727799300,1cyclictest0-21swapper/1222:25:154
1507274993029,1cyclictest1774-21snmpd22:43:483
1507274993029,1cyclictest1774-21snmpd20:53:293
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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