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2025-12-29 - 17:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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 rack0slot6s.osadl.org (updated Mon Dec 29, 2025 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40009742269262,4sleep20-21swapper/219:05:0712
40041512249242,4sleep30-21swapper/319:08:4913
40040052240192,39sleep90-21swapper/919:06:5519
40041462237229,5sleep190-21swapper/1919:08:4511
40038962235213,14sleep70-21swapper/719:05:3117
40042272234214,12sleep00-21swapper/019:09:450
40039062234213,13sleep150-21swapper/1519:05:397
40039422233212,13sleep50-21swapper/519:06:0915
40040302232212,13sleep120-21swapper/1219:07:184
40041922231212,12sleep100-21swapper/1019:09:162
40039132231211,12sleep10-21swapper/119:05:461
40040492230209,13sleep80-21swapper/819:07:3418
40040912227206,13sleep170-21swapper/1719:08:029
40039892227206,13sleep180-21swapper/1819:06:4310
40040222225204,13sleep40-21swapper/419:07:0914
40039182225204,13sleep60-21swapper/619:05:5016
40042222224205,12sleep160-21swapper/1619:09:418
40041092223204,12sleep110-21swapper/1119:08:173
40039272221201,13sleep130-21swapper/1319:05:575
40041962218196,14sleep140-21swapper/1419:09:196
400465699656,28cyclictest0-21swapper/1520:07:397
400466199646,27cyclictest0-21swapper/1723:22:389
4004658995518,36cyclictest0-21swapper/1619:15:588
4004631995018,31cyclictest0-21swapper/819:15:5818
4004666994140,1cyclictest3925-21gnome-shell23:28:5910
4004621994113,27cyclictest671irq_work/519:14:5815
400463399401,38cyclictest0-21swapper/920:40:5819
400463199408,31cyclictest0-21swapper/821:45:5918
4004641993814,0cyclictest1231irq_work/1119:47:213
4004668993710,1cyclictest40145951kworker/u80:3+i91519:29:5911
4004656993710,26cyclictest1591irq_work/1519:18:597
400463399377,29cyclictest1031irq_work/919:38:5819
194899370,0ntpd0-21swapper/1222:52:354
400466899352,28cyclictest5416-21qemu-system-x8619:41:4211
400466199350,1cyclictest0-21swapper/1719:28:599
400464599347,26cyclictest0-21swapper/1219:57:594
400463899348,25cyclictest1121irq_work/1022:03:592
400463899348,25cyclictest1121irq_work/1022:03:592
400466199333,29cyclictest0-21swapper/1719:15:589
400466199330,3cyclictest4058014-21sed20:10:189
400465899330,0cyclictest0-21swapper/1619:36:598
4004651993332,1cyclictest183150irq/150-eno122:35:456
400464899330,0cyclictest0-21swapper/1319:11:345
4004633993333,0cyclictest0-21swapper/923:28:5919
400461199335,27cyclictest0-21swapper/200:16:5912
400466899320,0cyclictest0-21swapper/1922:25:2111
400466199320,4cyclictest4070875-21swap20:25:219
400466199320,3cyclictest4180902-21latency_hist22:39:599
4004631993225,7cyclictest0-21swapper/822:49:5918
4004631993219,0cyclictest0-21swapper/823:00:4618
4004618993218,0cyclictest0-21swapper/400:09:2214
4004668993127,4cyclictest0-21swapper/1923:19:5911
400465899310,22cyclictest4070789-21ls20:25:198
4004648993131,0cyclictest0-21swapper/1300:05:075
4004621993131,0cyclictest0-21swapper/519:15:2115
4004618993131,0cyclictest0-21swapper/421:55:5914
4004618993131,0cyclictest0-21swapper/421:55:5914
4004618993131,0cyclictest0-21swapper/421:35:5914
400461899310,1cyclictest0-21swapper/400:38:4814
4004666993030,0cyclictest0-21swapper/1822:25:2110
400466199300,3cyclictest4140014-21tr21:50:139
400466199300,23cyclictest5120-21cpuspeed_turbos23:00:179
4004658993019,11cyclictest65242-21kworker/u80:6+i91500:35:588
400465899300,22cyclictest32622-21unixbench_multi23:30:268
4004651993030,0cyclictest183150irq/150-eno123:45:226
4004633993026,3cyclictest326420-21CPU19
4004618993030,0cyclictest0-21swapper/423:52:4114
4004618993030,0cyclictest0-21swapper/422:23:5914
4004618993030,0cyclictest0-21swapper/419:21:5814
4004618993030,0cyclictest0-21swapper/419:12:5814
4004618993018,0cyclictest0-21swapper/400:27:1914
400466699290,28cyclictest0-21swapper/1819:41:4210
400466199290,22cyclictest3558-21Xorg19:31:599
400466199290,1cyclictest4053079-21expr20:05:149
400466199290,1cyclictest0-21swapper/1719:39:589
4004658992924,5cyclictest0-21swapper/1619:24:588
4004658992918,10cyclictest0-21swapper/1622:25:288
400465899290,3cyclictest4121114-21switchtime21:25:248
4004631992927,2cyclictest0-21swapper/819:36:5818
400463199292,27cyclictest941irq_work/820:28:5818
400463199291,5cyclictest4175987-21worker22:31:5318
400463199290,28cyclictest0-21swapper/821:50:5918
400463199290,21cyclictest0-21swapper/821:30:1518
4004627992918,0cyclictest0-21swapper/723:27:1017
400462399290,28cyclictest0-21swapper/622:52:5916
4004618992929,0cyclictest0-21swapper/420:43:2314
4004618992927,1cyclictest581irq_work/420:19:5814
4004618992918,0cyclictest0-21swapper/400:23:3914
4004601992929,0cyclictest0-21swapper/019:30:590
400466699280,28cyclictest0-21swapper/1819:12:5910
4004661992828,0cyclictest0-21swapper/1722:34:599
400466199280,2cyclictest1862-21sshd00:35:319
400466199280,28cyclictest0-21swapper/1719:55:039
400466199280,27cyclictest0-21swapper/1700:21:219
4004658992818,9cyclictest0-21swapper/1623:35:218
4004658992818,9cyclictest0-21swapper/1621:30:148
4004658992818,10cyclictest0-21swapper/1620:10:178
4004658992818,10cyclictest0-21swapper/1600:27:598
4004658992817,7cyclictest41604311kworker/u80:3+i91522:31:598
4004658992817,3cyclictest4072868-21kworker/u80:6+i91520:39:598
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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