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2026-06-13 - 15:45

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 Sat Jun 13, 2026 00:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21111552398378,13sleep100-21swapper/1019:09:262
21105792373365,5sleep120-21swapper/1219:05:274
21108332368327,15sleep130-21swapper/1319:06:015
21108042367326,13sleep50-21swapper/519:05:3611
21109852358323,28sleep00-21swapper/019:07:240
21109102358339,13sleep40-21swapper/419:06:3910
21107902358348,7sleep140-21swapper/1419:05:306
21109732353333,13sleep90-21swapper/919:07:1615
21110922352332,13sleep150-21swapper/1519:08:437
21111292350329,14sleep110-21swapper/1119:09:113
21109162350330,13sleep70-21swapper/719:06:4313
21108012348327,14sleep20-21swapper/219:05:338
21110822347327,13sleep60-21swapper/619:08:3512
21110522347325,15sleep30-21swapper/319:08:159
21110302347328,12sleep10-21swapper/119:07:561
21109722345324,14sleep80-21swapper/819:07:1514
24014302630,2sleep134-21ksoftirqd/123:35:161
2111627993836,2cyclictest2237828-21kworker/u32:3+flush-259:021:50:200
2111632993736,1cyclictest2279724-21kworker/u32:2+events_unbound23:02:188
2111632993635,1cyclictest2414755-21ntpq23:45:198
2111632993533,2cyclictest0-21swapper/223:53:448
2111632993532,3cyclictest0-21swapper/223:15:428
2111632993434,0cyclictest2320631-21ssh22:32:408
2111632993434,0cyclictest0-21swapper/222:52:428
2111632993431,3cyclictest0-21swapper/222:07:488
2111632993429,3cyclictest0-21swapper/221:41:278
211167299330,29cyclictest0-21swapper/1521:05:157
2111667993326,4cyclictest1774-21snmpd22:18:455
211165199330,32cyclictest0-21swapper/820:30:1514
211164899330,31cyclictest0-21swapper/719:30:1313
2111632993331,2cyclictest0-21swapper/221:53:188
2111632993330,3cyclictest0-21swapper/223:44:208
211163299330,31cyclictest2430532-21kworker/2:1-mm_percpu_wq00:06:138
211163299330,30cyclictest2213539-21kworker/2:1+mm_percpu_wq21:15:178
211163299330,30cyclictest2135917-21kworker/2:1-mm_percpu_wq19:50:138
211166799320,31cyclictest0-21swapper/1321:45:395
211166799320,1cyclictest0-21swapper/1321:25:405
2111657993230,2cyclictest2402915-21kworker/u32:0+events_unbound23:40:192
2111653993224,8cyclictest0-21swapper/921:54:5915
211164899320,1cyclictest0-21swapper/719:16:3113
2111632993231,1cyclictest1769-21arpwatch21:55:258
2111632993230,2cyclictest0-21swapper/221:26:088
2111632993230,2cyclictest0-21swapper/200:14:308
2111632993230,1cyclictest0-21swapper/223:20:478
2111632993229,2cyclictest0-21swapper/222:43:528
2111632993228,3cyclictest2282337-21kworker/2:1-events22:04:388
2111632993228,2cyclictest0-21swapper/223:37:338
2111632993227,3cyclictest0-21swapper/200:39:298
211163299320,30cyclictest0-21swapper/221:00:128
211163299320,29cyclictest411rcuc/219:25:118
211163299320,29cyclictest0-21swapper/200:27:428
211167299310,30cyclictest0-21swapper/1522:10:157
211167299310,30cyclictest0-21swapper/1520:31:397
2111667993128,3cyclictest1774-21snmpd20:17:095
211166799310,30cyclictest0-21swapper/1322:05:135
2111657993130,1cyclictest2440124-21kworker/10:1+events00:24:232
211165799310,30cyclictest0-21swapper/1020:45:142
211165799310,30cyclictest0-21swapper/1020:45:132
2111653993130,1cyclictest0-21swapper/923:53:3215
211165199310,30cyclictest0-21swapper/800:35:4514
2111648993128,3cyclictest1774-21snmpd20:19:2613
2111648993127,4cyclictest1774-21snmpd22:27:4613
211164899310,30cyclictest0-21swapper/700:25:4513
211164699310,30cyclictest0-21swapper/623:47:2212
2111641993130,1cyclictest1774-21snmpd00:04:2311
2111641993130,1cyclictest1774-21snmpd00:04:2311
211163999310,30cyclictest0-21swapper/420:43:2410
211163999310,30cyclictest0-21swapper/420:05:0910
211163999310,30cyclictest0-21swapper/420:02:5610
211163699310,30cyclictest0-21swapper/323:55:149
211163699310,30cyclictest0-21swapper/323:55:139
211163699310,30cyclictest0-21swapper/322:30:129
2111632993131,0cyclictest0-21swapper/223:27:128
2111632993129,2cyclictest2301078-21kworker/2:0-events23:06:108
2111632993129,2cyclictest2122665-21df_inode19:20:128
2111632993129,0cyclictest0-21swapper/222:35:178
2111632993129,0cyclictest0-21swapper/222:16:068
2111632993129,0cyclictest0-21swapper/200:31:498
2111632993127,4cyclictest2230984-21kworker/u32:1+events_unbound21:32:418
2111632993127,2cyclictest0-21swapper/222:22:038
211163299310,30cyclictest0-21swapper/221:20:138
211163299310,29cyclictest0-21swapper/223:31:068
211163299310,29cyclictest0-21swapper/220:10:148
211163299310,28cyclictest2212818-21diskmemload21:45:218
211162799310,30cyclictest0-21swapper/020:39:570
2111672993029,1cyclictest1774-21snmpd19:16:557
2111672993029,1cyclictest1774-21snmpd00:11:477
2111669993029,1cyclictest1774-21snmpd23:47:216
2111669993029,1cyclictest1774-21snmpd22:57:036
2111669993029,1cyclictest1774-21snmpd20:54:486
2111669993029,1cyclictest1774-21snmpd20:54:486
2111667993027,3cyclictest1774-21snmpd22:51:295
211166799300,29cyclictest0-21swapper/1319:28:495
2111662993029,1cyclictest1774-21snmpd23:08:594
2111661993029,1cyclictest1774-21snmpd22:06:393
211166199300,1cyclictest0-21swapper/1120:44:013
2111657993029,1cyclictest2198354-21mii-tool20:50:142
2111657993029,1cyclictest2198354-21mii-tool20:50:132
2111657993029,1cyclictest1774-21snmpd23:00:172
211165799300,1cyclictest0-21swapper/1019:50:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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