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2026-06-30 - 18:08

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 Tue Jun 30, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
701942394373,14sleep40-21swapper/419:08:0110
701942394373,14sleep40-21swapper/419:08:0110
700972368348,13sleep50-21swapper/519:06:4111
700972368348,13sleep50-21swapper/519:06:4111
701562365345,13sleep20-21swapper/219:07:278
701562365345,13sleep20-21swapper/219:07:278
700362365323,14sleep70-21swapper/719:05:5513
700362365323,14sleep70-21swapper/719:05:5513
668802365358,5sleep90-21swapper/919:05:0915
668802365358,5sleep90-21swapper/919:05:0915
701052353335,12sleep130-21swapper/1319:06:495
701052353335,12sleep130-21swapper/1319:06:495
702732352333,12sleep60-21swapper/619:09:0712
702732352333,12sleep60-21swapper/619:09:0712
700312351334,11sleep30-21swapper/319:05:519
700312351334,11sleep30-21swapper/319:05:519
702752350330,13sleep80-21swapper/819:09:0914
702752350330,13sleep80-21swapper/819:09:0914
702642349328,14sleep140-21swapper/1419:08:596
702642349328,14sleep140-21swapper/1419:08:596
700602349328,14sleep120-21swapper/1219:06:164
700602349328,14sleep120-21swapper/1219:06:164
700632348328,13sleep150-21swapper/1519:06:197
700632348328,13sleep150-21swapper/1519:06:197
702852347328,13sleep00-21swapper/019:09:170
702852347328,13sleep00-21swapper/019:09:170
701022346326,13sleep100-21swapper/1019:06:462
701022346326,13sleep100-21swapper/1019:06:462
700422344324,13sleep110-21swapper/1119:05:593
700422344324,13sleep110-21swapper/1119:05:593
684002344334,6sleep10-21swapper/119:05:171
684002344334,6sleep10-21swapper/119:05:171
70767993330,2cyclictest357205-21kworker/u32:3+flush-259:000:25:1815
7076499330,30cyclictest0-21swapper/819:35:1514
70762993330,3cyclictest1774-21snmpd22:44:5413
7078599310,30cyclictest0-21swapper/1523:36:387
7077899310,30cyclictest0-21swapper/1323:00:465
7077899310,30cyclictest0-21swapper/1319:15:585
70773993129,2cyclictest1774-21snmpd22:16:183
70773993129,2cyclictest1774-21snmpd20:26:293
70769993130,1cyclictest384214-21kworker/10:0+events00:02:042
70769993130,1cyclictest146811-21kworker/10:0+events21:37:432
70769993129,1cyclictest402662-21kworker/10:2+events00:27:082
70769993129,1cyclictest402662-21kworker/10:2+events00:10:272
70769993129,1cyclictest273813-21kworker/10:2+events23:03:332
70769993129,1cyclictest273813-21kworker/10:2+events22:58:052
70769993129,1cyclictest218113-21kworker/10:1+events22:00:252
70769993129,1cyclictest218113-21kworker/10:1+events21:54:192
70769993129,1cyclictest146811-21kworker/10:0+events21:49:092
70769993129,1cyclictest146811-21kworker/10:0+events21:44:412
70769993129,1cyclictest146811-21kworker/10:0+events21:27:032
70769993129,1cyclictest146811-21kworker/10:0+events21:22:552
70769993129,1cyclictest146811-21kworker/10:0+events21:12:052
7076999310,30cyclictest0-21swapper/1023:35:142
7076799310,30cyclictest0-21swapper/923:07:4415
7076799310,30cyclictest0-21swapper/920:35:2715
7075799310,1cyclictest0-21swapper/621:53:4712
70755993130,1cyclictest1774-21snmpd21:29:4611
70755993129,2cyclictest1774-21snmpd21:48:5011
70755993127,4cyclictest426567-21ethtool00:25:1411
70755993127,3cyclictest420180-21ethtool00:20:1711
7075599310,30cyclictest0-21swapper/519:12:0011
7075599310,30cyclictest0-21swapper/519:12:0011
7074699310,30cyclictest0-21swapper/223:45:268
7074199310,30cyclictest0-21swapper/020:12:170
70785993029,1cyclictest0-21swapper/1523:24:567
7078599300,1cyclictest0-21swapper/1520:16:457
70783993029,1cyclictest1774-21snmpd21:53:336
70778993029,1cyclictest1774-21snmpd22:51:265
70778993029,1cyclictest1774-21snmpd21:27:015
70778993029,1cyclictest1774-21snmpd20:52:065
70778993029,1cyclictest1774-21snmpd20:06:355
70778993029,1cyclictest1774-21snmpd19:34:465
70778993029,1cyclictest0-21swapper/1321:15:375
7077899300,29cyclictest0-21swapper/1323:35:565
70776993029,1cyclictest1774-21snmpd23:48:204
7077699300,1cyclictest0-21swapper/1222:15:544
70773993029,1cyclictest1774-21snmpd00:03:073
7077399300,30cyclictest0-21swapper/1122:27:273
7077399300,1cyclictest0-21swapper/1122:38:373
70769993030,0cyclictest273813-21kworker/10:2+events23:32:092
70769993030,0cyclictest273813-21kworker/10:2+events22:36:232
70769993029,1cyclictest4190377-21kworker/10:2+events20:05:182
70769993029,1cyclictest4190377-21kworker/10:2+events20:00:132
70769993029,1cyclictest402662-21kworker/10:2+events00:37:532
70769993029,1cyclictest402662-21kworker/10:2+events00:30:212
70769993029,1cyclictest402662-21kworker/10:2+events00:20:242
70769993029,1cyclictest402662-21kworker/10:2+events00:15:592
70769993029,1cyclictest273813-21kworker/10:2+events23:50:212
70769993029,1cyclictest273813-21kworker/10:2+events23:40:102
70769993029,1cyclictest273813-21kworker/10:2+events23:20:162
70769993029,1cyclictest273813-21kworker/10:2+events23:12:512
70769993029,1cyclictest273813-21kworker/10:2+events23:07:032
70769993029,1cyclictest273813-21kworker/10:2+events22:48:352
70769993029,1cyclictest273813-21kworker/10:2+events22:43:532
70769993029,1cyclictest273813-21kworker/10:2+events22:30:252
70769993029,1cyclictest241805-21kworker/10:0+events22:25:052
70769993029,1cyclictest241805-21kworker/10:0+events22:22:212
70769993029,1cyclictest218113-21kworker/10:1+events22:06:012
70769993029,1cyclictest218113-21kworker/10:1+events22:06:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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