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2026-07-09 - 01:36

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 Thu Jul 09, 2026 00:46:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7454832357316,14sleep120-21swapper/1219:08:314
7454482355339,10sleep70-21swapper/719:08:1013
7455962353333,13sleep40-21swapper/419:09:4310
7454692352332,12sleep30-21swapper/319:08:229
7454672352331,13sleep10-21swapper/119:08:201
7454052352333,13sleep90-21swapper/919:07:4015
7453032352341,7sleep50-21swapper/519:06:1511
7452462352332,12sleep100-21swapper/1019:05:332
7455662351332,13sleep140-21swapper/1419:09:216
7455562351332,13sleep80-21swapper/819:09:1614
7455622350330,13sleep110-21swapper/1119:09:183
7452812350330,13sleep20-21swapper/219:05:568
7455672345326,12sleep150-21swapper/1519:09:237
7454132345324,13sleep00-21swapper/019:07:470
7453412345325,14sleep60-21swapper/619:06:4812
7452492342322,13sleep130-21swapper/1319:05:355
7460349910973,33cyclictest1070661-21kworker/u32:1+events_unbound00:04:378
746039998785,1cyclictest741247-21kworker/u32:4+events_unbound19:10:1310
746071994845,2cyclictest788214-21kworker/u32:2+flush-259:020:15:207
746056994846,2cyclictest1057643-21kworker/u32:0+flush-259:000:05:442
746053994744,2cyclictest933699-21kworker/u32:4+events_unbound22:45:1615
746053994744,2cyclictest933699-21kworker/u32:4+events_unbound22:45:1615
746033994139,2cyclictest915692-21kworker/u32:1+events_unbound22:04:181
74606899390,14cyclictest0-21swapper/1421:44:596
74606899360,36cyclictest0-21swapper/1422:28:556
74606899360,35cyclictest0-21swapper/1422:17:566
74606899360,35cyclictest0-21swapper/1420:39:056
74606899360,23cyclictest0-21swapper/1422:50:536
746066993634,2cyclictest961211-21kworker/u32:2+events_unbound23:00:375
746066993634,2cyclictest886389-21kworker/u32:4+flush-259:021:53:165
74606899350,35cyclictest0-21swapper/1419:11:136
74606899350,0cyclictest0-21swapper/1400:29:446
746045993527,8cyclictest1774-21snmpd22:23:1712
74606899340,21cyclictest0-21swapper/1421:23:016
74604599340,31cyclictest0-21swapper/623:50:1512
746034993432,2cyclictest875590-21kworker/u32:0+flush-259:021:44:008
74604599330,32cyclictest0-21swapper/620:40:1212
74603599330,32cyclictest0-21swapper/321:05:139
746033993332,1cyclictest1084595-21kworker/u32:3+events_unbound00:22:331
746068993229,3cyclictest913950-21ethtool22:00:156
746066993230,2cyclictest1057643-21kworker/u32:0+events_unbound00:30:135
74605399320,29cyclictest0-21swapper/919:50:1415
746050993229,2cyclictest849772-21kworker/u32:0+events_unbound21:15:3914
74603599320,1cyclictest0-21swapper/320:15:099
746034993228,2cyclictest0-21swapper/223:06:558
74603499320,29cyclictest0-21swapper/223:52:278
746071993129,1cyclictest1039906-21kworker/u32:2+events_unbound23:41:357
74606899310,30cyclictest0-21swapper/1423:42:206
746066993130,1cyclictest1774-21snmpd20:19:535
746066993130,1cyclictest0-21swapper/1323:59:475
746061993130,1cyclictest1774-21snmpd20:23:174
74606199310,30cyclictest0-21swapper/1220:10:144
746060993130,1cyclictest1774-21snmpd19:12:133
74606099310,30cyclictest0-21swapper/1123:35:053
746056993130,1cyclictest1027031-21kworker/10:1+events23:53:302
746053993130,1cyclictest796661-21kworker/u32:1+events_unbound20:24:2715
746047993130,1cyclictest1774-21snmpd19:23:1013
746047993130,1cyclictest0-21swapper/720:58:1513
74604799310,30cyclictest0-21swapper/721:50:1413
74604799310,30cyclictest0-21swapper/721:18:2913
74604799310,30cyclictest0-21swapper/720:11:5413
74604799310,30cyclictest0-21swapper/719:33:5213
74604799310,30cyclictest0-21swapper/719:33:5213
74604599310,30cyclictest0-21swapper/623:41:5212
74604599310,30cyclictest0-21swapper/622:28:2012
74604199310,30cyclictest0-21swapper/520:20:0511
74603999310,30cyclictest0-21swapper/423:48:4410
746035993130,1cyclictest1774-21snmpd23:07:109
746035993128,3cyclictest1056034-21mii-tool23:50:149
746035993122,9cyclictest1774-21snmpd22:20:329
74603599310,30cyclictest0-21swapper/322:00:129
74603599310,30cyclictest0-21swapper/300:02:269
74603499310,30cyclictest0-21swapper/223:45:418
74602999316,6cyclictest1189-21rs:main0
746029993127,4cyclictest1774-21snmpd23:50:140
74602999310,30cyclictest0-21swapper/022:05:330
74602999310,30cyclictest0-21swapper/019:50:140
746071993029,1cyclictest1774-21snmpd00:19:207
74607199300,29cyclictest0-21swapper/1521:35:087
74606899305,24cyclictest0-21swapper/1423:45:486
746068993023,7cyclictest1056007-21ethtool23:50:156
74606899300,29cyclictest0-21swapper/1422:13:176
74606699300,30cyclictest0-21swapper/1319:31:415
74606699300,30cyclictest0-21swapper/1319:31:405
74606699300,1cyclictest0-21swapper/1320:08:415
746061993029,1cyclictest0-21swapper/1222:21:564
74606199300,30cyclictest0-21swapper/1222:56:094
74606199300,1cyclictest0-21swapper/1219:48:294
746060993029,1cyclictest1774-21snmpd20:51:463
746060993029,1cyclictest1774-21snmpd19:45:343
746056993029,1cyclictest991804-21kworker/10:2+events23:10:032
746056993029,1cyclictest991804-21kworker/10:2+events23:02:492
746056993029,1cyclictest966012-21kworker/10:1+events22:46:522
746056993029,1cyclictest966012-21kworker/10:1+events22:46:512
746056993029,1cyclictest1774-21snmpd22:32:232
746056993029,1cyclictest1774-21snmpd21:13:322
746056993029,1cyclictest1774-21snmpd00:04:382
74605699300,30cyclictest0-21swapper/1021:00:152
746053993029,1cyclictest1774-21snmpd21:35:0415
746053993029,1cyclictest1774-21snmpd19:27:0215
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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