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2025-12-27 - 06:29

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 Sat Dec 27, 2025 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18692152250208,12sleep10-21swapper/119:08:261
18691402246239,4sleep180-21swapper/1819:07:2210
18691542243236,4sleep100-21swapper/1019:07:342
18691442243235,5sleep00-21swapper/019:07:240
18692762241200,12sleep30-21swapper/319:09:0813
18692542239218,13sleep60-21swapper/619:08:5216
18691852239200,31sleep150-21swapper/1519:08:007
18692522234215,12sleep40-21swapper/419:08:4914
18692902233214,12sleep120-21swapper/1219:09:174
18692582233212,13sleep90-21swapper/919:08:5419
18692572233213,13sleep80-21swapper/819:08:5318
18691862233211,13sleep160-21swapper/1619:08:018
18693182232212,13sleep140-21swapper/1419:09:396
18692532232212,12sleep50-21swapper/519:08:5115
18690422232212,12sleep20-21swapper/219:06:0612
18690312231211,12sleep130-21swapper/1319:05:575
18692102229209,12sleep170-21swapper/1719:08:229
18690382227206,14sleep190-21swapper/1919:06:0311
18692022217198,12sleep110-21swapper/1119:08:163
18690012214193,13sleep70-21swapper/719:05:3117
186973099487,35cyclictest0-21swapper/822:37:4018
1869711994814,32cyclictest326418-21CPU13
1869706994720,26cyclictest0-21swapper/223:08:5812
186973899464,25cyclictest0-21swapper/1019:22:392
1869728994212,27cyclictest20524431kworker/u80:2+i91523:55:5817
186970699419,31cyclictest0-21swapper/219:41:5912
1869706994010,29cyclictest0-21swapper/221:53:5912
1869730993910,28cyclictest941irq_work/821:53:5918
1869748993711,0cyclictest0-21swapper/1320:00:595
1869744993737,0cyclictest0-21swapper/1219:32:594
20149102350,0sleep20-21swapper/222:00:1812
1869740993427,6cyclictest0-21swapper/1100:15:183
1869740993427,6cyclictest0-21swapper/1100:15:183
1869768993329,1cyclictest73050usb-storage23:20:1511
186976499330,33cyclictest0-21swapper/1819:52:5010
186975099335,27cyclictest1501irq_work/1423:46:596
186972899335,27cyclictest1883360-21kworker/u80:4+i91521:35:5917
186971799330,32cyclictest0-21swapper/419:11:2514
186970099330,26cyclictest1889952-21kworker/u80:0+i91519:32:080
1869768993232,0cyclictest0-21swapper/1919:11:5911
186976099325,26cyclictest1771irq_work/1722:50:589
1869750993231,1cyclictest183150irq/150-eno120:45:296
186971799320,31cyclictest0-21swapper/419:58:1714
186970699320,31cyclictest0-21swapper/200:20:1412
186970099326,25cyclictest261irq_work/019:14:590
186976899314,0cyclictest1951irq_work/1921:35:0011
1869750993130,1cyclictest183150irq/150-eno123:03:456
1869724993131,0cyclictest0-21swapper/600:15:1216
1869724993131,0cyclictest0-21swapper/600:15:1116
1869711993127,4cyclictest0-21swapper/300:15:1813
1869711993127,4cyclictest0-21swapper/300:15:1813
186970699310,3cyclictest1900418-21/usr/sbin/munin19:45:1512
186970699310,30cyclictest326344-21qemu-system-x8619:37:5912
186970099310,31cyclictest0-21swapper/000:33:180
1869764993027,3cyclictest326420-21CPU10
1869754993030,0cyclictest0-21swapper/1500:16:137
1869754993030,0cyclictest0-21swapper/1500:16:127
1869754993028,2cyclictest73050usb-storage23:52:557
186975499300,30cyclictest0-21swapper/1500:05:017
1869750993011,18cyclictest183150irq/150-eno100:39:386
1869734993030,0cyclictest0-21swapper/919:15:1019
1869730993029,1cyclictest0-21swapper/823:25:5818
1869730993015,0cyclictest0-21swapper/800:07:3118
1869717993018,12cyclictest0-21swapper/400:31:1514
1869717993017,0cyclictest0-21swapper/400:19:2514
1869717993017,0cyclictest0-21swapper/400:19:2514
1869717993016,0cyclictest0-21swapper/400:35:3014
1869717993016,0cyclictest0-21swapper/400:05:4614
1869711993030,0cyclictest0-21swapper/300:24:3413
186971199301,1cyclictest326420-21CPU13
1869706993020,9cyclictest0-21swapper/222:31:5912
186970699300,29cyclictest0-21swapper/222:35:2212
186970699300,29cyclictest0-21swapper/219:31:5912
186970099300,30cyclictest0-21swapper/000:28:570
1869764992929,0cyclictest0-21swapper/1800:36:2910
1869758992929,0cyclictest0-21swapper/1623:56:588
1869750992929,0cyclictest183150irq/150-eno100:14:516
1869748992923,6cyclictest0-21swapper/1322:14:585
1869734992929,0cyclictest0-21swapper/922:43:5819
1869734992929,0cyclictest0-21swapper/900:33:1919
1869734992928,1cyclictest0-21swapper/900:05:2219
186973499290,28cyclictest0-21swapper/921:05:1519
1869730992929,0cyclictest0-21swapper/820:42:1218
1869730992928,1cyclictest0-21swapper/820:05:1218
1869728992928,1cyclictest0-21swapper/723:25:5817
1869724992929,0cyclictest0-21swapper/621:59:2616
1869724992929,0cyclictest0-21swapper/600:31:1416
186972499290,28cyclictest2120529-21ssh00:07:0116
1869717992917,0cyclictest0-21swapper/400:24:0814
1869717992916,0cyclictest0-21swapper/400:27:2614
1869711992920,9cyclictest0-21swapper/319:20:5913
1869706992923,6cyclictest0-21swapper/200:15:1812
1869706992923,6cyclictest0-21swapper/200:15:1812
186970699290,7cyclictest0-21swapper/223:25:2312
186970699290,28cyclictest0-21swapper/223:23:4612
186970699290,28cyclictest0-21swapper/222:56:1712
186970699290,28cyclictest0-21swapper/221:30:2312
186970699290,28cyclictest0-21swapper/200:25:1412
186970699290,1cyclictest0-21swapper/220:20:0012
1869768992826,1cyclictest0-21swapper/1919:30:0011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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