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2026-05-06 - 12:54

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 May 06, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20678582410390,13sleep20-21swapper/219:07:108
20679512361323,14sleep30-21swapper/319:08:009
20680262357338,13sleep80-21swapper/819:08:5214
20677372357316,14sleep70-21swapper/719:05:3813
20680512355336,13sleep100-21swapper/1019:09:112
20679222355315,32sleep00-21swapper/019:07:400
20680442354334,13sleep50-21swapper/519:09:0711
20677842354314,13sleep140-21swapper/1419:06:176
20680832353333,13sleep150-21swapper/1519:09:327
20665372353345,5sleep120-21swapper/1219:05:284
20680272352332,13sleep90-21swapper/919:08:5315
20681122351333,12sleep60-21swapper/619:09:5512
20680302351331,13sleep110-21swapper/1119:08:563
20669332350342,5sleep10-21swapper/119:05:321
20679642344324,13sleep130-21swapper/1319:08:095
20678962343326,11sleep40-21swapper/419:07:2910
20684899911224,14cyclictest0-21swapper/1020:09:582
206849999967,89cyclictest0-21swapper/1320:09:585
2068494999435,30cyclictest0-21swapper/1220:09:584
2068466999437,29cyclictest0-21swapper/320:09:589
2068491998023,29cyclictest0-21swapper/1120:09:583
2068463997820,28cyclictest0-21swapper/220:09:598
2068475996837,31cyclictest0-21swapper/620:09:5712
2068470994443,1cyclictest170-21kcompactd023:56:4210
2068501994239,2cyclictest2315310-21kworker/u32:3+flush-259:023:20:176
2068470994039,1cyclictest3318-21Xorg20:09:5810
2068501993837,1cyclictest3318-21Xorg20:09:576
206846399387,31cyclictest2200377-21kworker/u32:2+events_unbound22:12:038
2068463993531,3cyclictest2123273-21kworker/u32:4+events_unbound21:18:008
206848399340,33cyclictest0-21swapper/822:00:1514
2068475993429,5cyclictest781ktimers/623:56:4212
206846399340,32cyclictest0-21swapper/223:07:568
206848999330,29cyclictest0-21swapper/1023:37:012
206848599330,31cyclictest0-21swapper/920:09:5815
206848399330,30cyclictest0-21swapper/821:49:1414
206848399330,1cyclictest0-21swapper/820:09:5714
206847599330,32cyclictest0-21swapper/619:45:1512
206847599330,32cyclictest0-21swapper/619:45:1412
206846399330,32cyclictest782-21systemd-journal19:48:068
206846399330,32cyclictest782-21systemd-journal19:48:058
206846399330,32cyclictest782-21systemd-journal19:42:248
206846399330,32cyclictest782-21systemd-journal19:42:248
2068489993229,3cyclictest1774-21snmpd21:52:152
2068475993232,0cyclictest0-21swapper/623:45:1812
2068473993232,0cyclictest3318-21Xorg20:09:5811
2068470993232,0cyclictest0-21swapper/421:35:1210
2068463993229,1cyclictest2123273-21kworker/u32:4+events_unbound20:55:138
206846399320,29cyclictest0-21swapper/222:36:238
206846399320,29cyclictest0-21swapper/221:22:338
206846399320,29cyclictest0-21swapper/219:32:028
206846399320,29cyclictest0-21swapper/200:35:008
206846399320,29cyclictest0-21swapper/200:00:388
206850199317,11cyclictest0-21swapper/1421:21:436
206850199317,11cyclictest0-21swapper/1400:17:276
206850199310,30cyclictest0-21swapper/1422:04:246
206849499310,30cyclictest0-21swapper/1220:55:024
206849199310,30cyclictest0-21swapper/1100:25:323
2068489993129,1cyclictest1997866-21kworker/10:0+events21:30:152
2068489993124,6cyclictest1774-21snmpd20:31:492
206848999310,28cyclictest0-21swapper/1023:15:152
206848599310,30cyclictest0-21swapper/900:15:1615
206848399310,30cyclictest0-21swapper/823:55:1314
2068479993128,3cyclictest1774-21snmpd19:29:3613
2068479993128,3cyclictest1774-21snmpd00:34:3013
206847999310,30cyclictest0-21swapper/723:00:4413
2068475993131,0cyclictest0-21swapper/623:18:5112
2068475993131,0cyclictest0-21swapper/623:05:5012
2068475993131,0cyclictest0-21swapper/622:49:1812
2068475993131,0cyclictest0-21swapper/622:49:1712
2068475993131,0cyclictest0-21swapper/600:10:1512
2068470993131,0cyclictest2416946-21kworker/4:1-events00:31:0010
2068463993126,3cyclictest0-21swapper/219:57:348
2068463993126,3cyclictest0-21swapper/219:26:018
206846399310,30cyclictest782-21systemd-journal19:51:378
206846399310,30cyclictest2301394-21ps22:50:288
206846399310,30cyclictest2301394-21ps22:50:288
206846399310,30cyclictest0-21swapper/223:11:028
206846399310,30cyclictest0-21swapper/223:02:028
206846399310,30cyclictest0-21swapper/222:44:128
206846399310,30cyclictest0-21swapper/222:32:388
206846399310,28cyclictest0-21swapper/223:38:518
206846399310,28cyclictest0-21swapper/221:30:008
206846399310,28cyclictest0-21swapper/200:16:158
206845999310,30cyclictest0-21swapper/123:49:361
206845999310,30cyclictest0-21swapper/100:32:001
2068453993129,1cyclictest1774-21snmpd21:40:180
206845399310,30cyclictest0-21swapper/023:32:400
206850199306,11cyclictest0-21swapper/1423:55:296
206850199306,11cyclictest0-21swapper/1420:37:476
2068501993029,1cyclictest2125991-21ethtool20:15:136
2068501993029,1cyclictest1774-21snmpd21:38:296
2068501993029,1cyclictest1774-21snmpd00:08:416
206850199300,1cyclictest0-21swapper/1423:42:526
206850199300,1cyclictest0-21swapper/1420:55:326
206849999300,29cyclictest0-21swapper/1322:47:385
206849999300,29cyclictest0-21swapper/1322:47:385
206849999300,29cyclictest0-21swapper/1320:35:165
206849999300,27cyclictest0-21swapper/1323:40:135
206849999300,1cyclictest0-21swapper/1321:11:155
2068494993029,1cyclictest1774-21snmpd22:02:014
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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