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2026-04-14 - 10:10

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 Tue Apr 14, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29083902224204,12sleep60-21swapper/619:05:3616
29088972223203,12sleep140-21swapper/1419:09:256
29086722222203,12sleep50-21swapper/519:07:5515
29087972216196,12sleep120-21swapper/1219:08:434
29089712211192,12sleep80-21swapper/819:09:5918
29086442203184,12sleep130-21swapper/1319:07:435
29087652201182,12sleep40-21swapper/419:08:3414
29086572196176,13sleep190-21swapper/1919:07:5011
29089602178168,6sleep30-21swapper/319:09:5413
29086392169162,4sleep110-21swapper/1119:07:423
29085112118111,4sleep100-21swapper/1019:06:412
290851929487,4sleep150-21swapper/1519:06:457
290891428243,12sleep00-21swapper/019:09:310
290880328166,10sleep160-21swapper/1619:08:478
290837327259,8sleep180-21swapper/1819:05:2910
290891726849,12sleep20-21swapper/219:09:3412
290842126654,7sleep70-21swapper/719:05:5717
290856826343,13sleep10-21swapper/119:07:121
290890226150,7sleep170-21swapper/1719:09:289
290839526141,12sleep90-21swapper/919:05:4019
2909513995938,19cyclictest472371-21CPU7
290952199580,0cyclictest0-21swapper/1820:30:0310
2909524995622,33cyclictest0-21swapper/1919:20:0811
290952499560,55cyclictest0-21swapper/1922:30:1811
2909521995521,33cyclictest0-21swapper/1821:45:2310
2909521995521,33cyclictest0-21swapper/1821:45:2310
2909464995553,0cyclictest0-21swapper/022:25:200
2909486995424,3cyclictest472370-21CPU17
2909513995349,1cyclictest0-21swapper/1520:55:407
2909483995348,4cyclictest7448-21qemu-system-x8619:47:2516
2909464995330,17cyclictest472370-21CPU0
2909521995221,30cyclictest0-21swapper/1820:35:2110
2909521995221,30cyclictest0-21swapper/1820:09:0410
2909521995121,29cyclictest472371-21CPU10
2909521995120,31cyclictest0-21swapper/1823:33:4910
290950899516,39cyclictest472370-21CPU5
2909524995024,25cyclictest0-21swapper/1923:37:2111
2909521995021,28cyclictest0-21swapper/1819:25:1910
2909521995016,33cyclictest0-21swapper/1800:20:2610
2909504995031,15cyclictest472371-21CPU4
2909488995047,1cyclictest472370-21CPU18
2909488995028,19cyclictest472371-21CPU18
2909524994922,26cyclictest0-21swapper/1921:54:2611
2909524994922,26cyclictest0-21swapper/1921:54:2611
2909521994921,7cyclictest0-21swapper/1821:34:4010
2909488994923,3cyclictest472370-21CPU18
2909524994824,23cyclictest2341301-21surface-HDMI-A-21:34:4711
2909524994824,23cyclictest0-21swapper/1919:35:4111
2909521994820,27cyclictest0-21swapper/1823:45:4410
2909488994821,23cyclictest472370-21CPU18
290946499482,13cyclictest16-21ksoftirqd/021:26:480
2909524994723,23cyclictest0-21swapper/1922:28:5011
2909521994719,27cyclictest0-21swapper/1822:45:1310
2909521994719,27cyclictest0-21swapper/1819:40:1210
2909515994741,3cyclictest2342571-21gmain23:55:488
2909513994747,0cyclictest0-21swapper/1521:21:327
2909510994737,9cyclictest7448-21qemu-system-x8600:07:056
2909508994737,3cyclictest472370-21CPU5
2909473994724,2cyclictest2341276-21cosmic-comp19:29:1713
2909471994743,2cyclictest472371-21CPU12
2909464994728,16cyclictest0-21swapper/020:56:040
2909521994621,24cyclictest0-21swapper/1822:15:2010
2909521994620,22cyclictest2341376-21cosmic-greeter20:04:5810
2909521994617,28cyclictest2343495-21Isolated09:56:3310
2909521994614,31cyclictest2343495-21Isolated09:56:3310
2909519994619,5cyclictest3097513-21StreamT~s9
2909504994640,5cyclictest136-21ksoftirqd/1220:55:274
2909483994644,1cyclictest0-21swapper/621:52:5116
2909483994644,1cyclictest0-21swapper/621:52:5116
290948399460,0cyclictest0-21swapper/622:09:3316
2909464994643,1cyclictest0-21swapper/023:35:120
2909524994522,1cyclictest0-21swapper/1900:20:5411
2909521994520,4cyclictest2341554-21thunderbird19:49:1610
2909521994520,24cyclictest3203135-21fw_conntrack00:35:1510
290951099450,1cyclictest0-21swapper/1423:09:006
2909504994514,27cyclictest136-21ksoftirqd/1200:38:594
2909491994514,29cyclictest3089397-21kworker/u80:1+i91522:55:4219
2909488994545,0cyclictest0-21swapper/822:57:2718
2909483994542,2cyclictest0-21swapper/623:05:3116
2909471994517,7cyclictest2341301-21surface-HDMI-A-21:02:0512
2909510994442,0cyclictest1531ktimers/1422:43:046
2909508994413,27cyclictest27548791kworker/u80:2+i91519:58:215
2909504994442,2cyclictest2341300-21surface-DP-119:41:224
2909504994441,1cyclictest472370-21CPU4
2909504994420,24cyclictest136-21ksoftirqd/1220:38:464
2909504994418,24cyclictest136-21ksoftirqd/1223:49:264
2909504994411,32cyclictest0-21swapper/1220:10:124
2909491994425,16cyclictest472370-21CPU19
2909491994425,16cyclictest472370-21CPU19
2909488994434,8cyclictest472370-21CPU18
2909488994431,10cyclictest472370-21CPU18
2909488994415,29cyclictest941irq_work/800:28:0918
2909486994411,32cyclictest0-21swapper/719:29:2117
2909471994425,0cyclictest0-21swapper/219:55:1912
2909467994418,15cyclictest472370-21CPU1
2909467994414,26cyclictest3067199-21kworker/u80:5+i91522:14:441
2909524994321,1cyclictest0-21swapper/1919:25:1611
2909524994319,22cyclictest0-21swapper/1919:42:4411
290952199439,33cyclictest0-21swapper/1819:35:5110
290951999439,28cyclictest0-21swapper/1720:54:309
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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