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2026-06-10 - 09:45

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 Wed Jun 10, 2026 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16196102371350,14sleep70-21swapper/719:06:5713
16197972368329,31sleep110-21swapper/1119:08:543
16196262357317,15sleep140-21swapper/1419:07:036
16197642354334,13sleep150-21swapper/1519:08:267
16195032354317,13sleep60-21swapper/619:05:3512
16197562353334,13sleep80-21swapper/819:08:1914
16163712353341,8sleep120-21swapper/1219:05:084
16195632352332,13sleep10-21swapper/119:06:191
16197532351331,13sleep50-21swapper/519:08:1511
16195252351331,13sleep100-21swapper/1019:05:562
16197232350329,14sleep30-21swapper/319:07:579
16196042350329,14sleep20-21swapper/219:06:528
16196892349328,14sleep130-21swapper/1319:07:345
16196362349329,13sleep40-21swapper/419:07:0910
16163672346326,13sleep90-21swapper/919:05:0615
16197202344322,15sleep00-21swapper/019:07:540
162031699424,25cyclictest0-21swapper/1419:56:266
16346922390,1sleep111221rcuc/1119:25:113
162031699380,25cyclictest0-21swapper/1422:30:116
1620316993736,1cyclictest1945506-21kworker/u32:4+events_unbound00:10:176
162031699360,11cyclictest0-21swapper/1423:14:086
1620276993635,1cyclictest1900434-21kworker/u32:1+events_unbound23:55:161
162031699350,10cyclictest0-21swapper/1423:36:066
162031699350,10cyclictest0-21swapper/1421:02:206
162031699350,10cyclictest0-21swapper/1400:31:016
162031699340,9cyclictest0-21swapper/1421:57:156
162031699340,9cyclictest0-21swapper/1421:57:156
162031699340,9cyclictest0-21swapper/1420:51:216
162031699340,9cyclictest0-21swapper/1420:18:236
162031699340,9cyclictest0-21swapper/1419:34:286
1620297993432,2cyclictest1939840-21kworker/u32:0+flush-259:000:30:1714
1620276993433,1cyclictest0-21swapper/100:09:191
1620276993433,0cyclictest0-21swapper/122:30:371
1620316993332,1cyclictest1900434-21kworker/u32:1+events_unbound23:30:216
162029599330,30cyclictest0-21swapper/719:25:1313
1620292993330,2cyclictest1774-21snmpd21:23:4712
1620285993324,1cyclictest1774-21snmpd00:19:1710
1620276993333,0cyclictest0-21swapper/122:39:081
1620276993333,0cyclictest0-21swapper/122:29:481
1620276993333,0cyclictest0-21swapper/121:30:081
1620274993331,2cyclictest1731023-21kworker/u32:4+events_unbound21:20:170
162031399320,29cyclictest0-21swapper/1321:15:175
162029099320,29cyclictest0-21swapper/520:35:1611
1620285993228,4cyclictest1774-21snmpd22:32:5210
162028599320,29cyclictest0-21swapper/419:10:1210
162028099320,29cyclictest0-21swapper/221:40:158
1620276993232,0cyclictest0-21swapper/100:32:051
162031399310,30cyclictest0-21swapper/1323:35:315
162031399310,30cyclictest0-21swapper/1321:30:015
162031399310,30cyclictest0-21swapper/1319:47:445
162031199310,1cyclictest0-21swapper/1223:41:104
1620304993130,1cyclictest1477369-21kworker/10:0+events20:00:172
162030499310,30cyclictest0-21swapper/1023:50:152
1620285993123,1cyclictest1640181-21ethtool19:30:1410
162028599310,30cyclictest0-21swapper/422:13:1510
162028599310,30cyclictest0-21swapper/400:33:1210
162028399310,30cyclictest0-21swapper/320:50:219
162028099310,30cyclictest0-21swapper/221:28:588
1620276993129,1cyclictest0-21swapper/121:29:291
1620318993029,1cyclictest1774-21snmpd20:14:487
162031899300,1cyclictest0-21swapper/1522:55:167
162031899300,1cyclictest0-21swapper/1521:04:377
162031699306,11cyclictest0-21swapper/1423:58:046
162031699306,11cyclictest0-21swapper/1423:03:096
162031699306,11cyclictest0-21swapper/1422:19:136
162031699306,11cyclictest0-21swapper/1421:24:186
1620316993030,0cyclictest1698705-21mii-tool20:40:146
1620316993030,0cyclictest0-21swapper/1422:46:536
1620316993030,0cyclictest0-21swapper/1421:30:086
1620316993029,1cyclictest0-21swapper/1421:50:166
1620316993029,1cyclictest0-21swapper/1421:50:156
162031399300,30cyclictest0-21swapper/1320:32:125
162031399300,29cyclictest0-21swapper/1319:54:535
162031399300,1cyclictest0-21swapper/1320:42:105
1620311993030,0cyclictest0-21swapper/1220:10:134
1620311993029,1cyclictest1942234-21kworker/u32:2+events_unbound00:00:174
1620311993029,1cyclictest1774-21snmpd22:47:324
162030699300,30cyclictest0-21swapper/1122:15:523
1620304993029,1cyclictest1886037-21kworker/10:1+events23:23:352
1620304993029,1cyclictest1786185-21kworker/10:2+events23:14:522
1620304993029,1cyclictest1786185-21kworker/10:2+events22:59:232
1620304993029,1cyclictest1786185-21kworker/10:2+events22:21:242
1620304993029,1cyclictest1774-21snmpd20:08:302
1620304993029,1cyclictest1774-21snmpd00:11:582
1620304993029,1cyclictest1477369-21kworker/10:0+events21:39:412
1620304993029,1cyclictest1477369-21kworker/10:0+events19:35:252
162030499300,30cyclictest0-21swapper/1019:59:152
1620301993029,1cyclictest1774-21snmpd23:46:3715
1620301993029,1cyclictest1774-21snmpd23:23:4515
1620301993029,1cyclictest1774-21snmpd19:26:1615
162029799300,30cyclictest0-21swapper/822:47:3414
162029799300,30cyclictest0-21swapper/821:06:2014
162029799300,1cyclictest0-21swapper/823:18:3214
1620292993029,1cyclictest1774-21snmpd22:19:1612
1620292993029,1cyclictest0-21swapper/620:57:4512
162029299300,1cyclictest0-21swapper/600:02:3412
1620290993029,1cyclictest1774-21snmpd21:34:3411
1620290993029,1cyclictest1774-21snmpd20:41:3711
1620290993029,1cyclictest1774-21snmpd19:30:1311
1620290993029,1cyclictest1730420-21ethtool21:15:1811
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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