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2025-12-12 - 00:58

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #8

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 rackbslot8s (updated Thu Dec 11, 2025 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34871332141132,5sleep10-21swapper/107:06:121
34871332141132,5sleep10-21swapper/107:06:111
34873202135128,4sleep20-21swapper/207:08:522
34873202135128,4sleep20-21swapper/207:08:522
34871102127113,9sleep50-21swapper/507:05:525
34871102127113,9sleep50-21swapper/507:05:525
34871262126111,10sleep30-21swapper/307:06:063
34871262126111,10sleep30-21swapper/307:06:053
348764099124123,1cyclictest0-21swapper/309:44:333
34873542123107,10sleep60-21swapper/607:09:216
34873542123107,10sleep60-21swapper/607:09:216
3485283212396,23sleep00-21swapper/007:05:060
3485283212396,23sleep00-21swapper/007:05:060
34873412120106,9sleep40-21swapper/407:09:114
34873412120106,9sleep40-21swapper/407:09:104
34871122120105,10sleep70-21swapper/707:05:547
34871122120105,10sleep70-21swapper/707:05:547
34876409911328,84cyclictest3503387-21kworker/3:109:12:103
34876409911327,86cyclictest3733621-21kworker/3:012:39:063
34876409911127,84cyclictest3503387-21kworker/3:110:28:153
34876409911127,84cyclictest3503387-21kworker/3:109:18:353
34876409911026,84cyclictest3503387-21kworker/3:111:18:453
34876409911026,84cyclictest3503387-21kworker/3:110:24:443
34876409911026,84cyclictest3503387-21kworker/3:109:38:303
34876409910926,0cyclictest3503387-21kworker/3:112:16:223
34876409910925,84cyclictest3733621-21kworker/3:012:34:083
34876409910925,84cyclictest3503387-21kworker/3:111:28:423
34876409910925,84cyclictest3503387-21kworker/3:110:18:183
34876409910925,84cyclictest3503387-21kworker/3:108:54:233
34876409910925,84cyclictest3493268-21kworker/3:007:25:323
34876409910925,84cyclictest3493268-21kworker/3:007:21:163
34876409910925,0cyclictest3503387-21kworker/3:109:00:063
34876409910924,84cyclictest3503387-21kworker/3:107:56:473
34876409910924,84cyclictest3493268-21kworker/3:007:36:103
34876409910924,0cyclictest3503387-21kworker/3:112:03:333
34876409910825,83cyclictest3503387-21kworker/3:108:57:583
34876409910825,0cyclictest3503387-21kworker/3:110:58:523
34876409910825,0cyclictest3503387-21kworker/3:109:27:503
34876409910825,0cyclictest3503387-21kworker/3:108:43:443
34876409910824,84cyclictest3503387-21kworker/3:111:55:443
34876409910824,84cyclictest3503387-21kworker/3:111:37:143
34876409910824,84cyclictest3503387-21kworker/3:110:01:153
34876409910824,84cyclictest3503387-21kworker/3:108:46:353
34876409910824,84cyclictest3503387-21kworker/3:107:44:423
34876409910824,84cyclictest3493268-21kworker/3:007:34:453
34876409910724,0cyclictest3503387-21kworker/3:110:53:513
34876409910724,0cyclictest3503387-21kworker/3:109:07:563
34876519910299,3cyclictest3437785-21snmpd12:34:156
3487651991020,102cyclictest0-21swapper/607:55:166
34876439910299,2cyclictest3437785-21snmpd09:12:024
3487654991010,101cyclictest0-21swapper/712:27:457
3487654991010,100cyclictest0-21swapper/711:42:317
3487654991010,100cyclictest0-21swapper/711:36:377
3487654991010,100cyclictest0-21swapper/711:28:127
3487654991010,0cyclictest0-21swapper/711:19:167
3487654991010,0cyclictest0-21swapper/708:28:377
34876519910199,2cyclictest3437785-21snmpd07:24:356
3487651991010,101cyclictest0-21swapper/611:13:456
3487646991010,100cyclictest0-21swapper/509:23:225
3487643991010,100cyclictest0-21swapper/407:25:384
34876409910199,0cyclictest0-21swapper/311:30:443
34876359910199,2cyclictest3437785-21snmpd11:41:482
34876359910199,2cyclictest3437785-21snmpd10:53:442
34876319910199,2cyclictest3437785-21snmpd09:09:291
34876269910199,2cyclictest3437785-21snmpd10:46:580
3487626991010,100cyclictest0-21swapper/008:58:200
3487654991000,99cyclictest0-21swapper/708:47:587
3487654991000,99cyclictest0-21swapper/707:46:087
3487654991000,100cyclictest0-21swapper/712:08:117
3487654991000,100cyclictest0-21swapper/709:35:547
3487654991000,100cyclictest0-21swapper/709:18:357
34876519910099,1cyclictest3437785-21snmpd11:06:036
34876519910099,1cyclictest3437785-21snmpd08:27:366
34876519910098,2cyclictest3437785-21snmpd10:34:436
34876519910098,2cyclictest3437785-21snmpd07:40:136
34876519910097,3cyclictest3437785-21snmpd10:03:166
3487651991000,1cyclictest0-21swapper/608:05:596
3487651991000,100cyclictest0-21swapper/612:29:066
3487651991000,100cyclictest0-21swapper/612:10:146
3487651991000,100cyclictest0-21swapper/610:54:036
3487651991000,100cyclictest0-21swapper/610:12:126
34876469910099,1cyclictest3437785-21snmpd11:22:255
34876469910099,1cyclictest3437785-21snmpd11:03:085
34876469910099,1cyclictest3437785-21snmpd10:32:525
34876469910099,1cyclictest3437785-21snmpd09:30:455
34876469910099,1cyclictest3437785-21snmpd07:23:415
34876469910098,2cyclictest3437785-21snmpd12:30:085
34876469910098,2cyclictest3437785-21snmpd12:06:375
348764699100100,0cyclictest3437785-21snmpd09:52:035
3487646991000,99cyclictest0-21swapper/511:05:575
3487646991000,99cyclictest0-21swapper/510:49:575
3487646991000,100cyclictest0-21swapper/510:52:575
3487646991000,100cyclictest0-21swapper/509:45:385
3487646991000,0cyclictest0-21swapper/509:09:295
34876439910099,1cyclictest3437785-21snmpd12:25:214
34876439910099,1cyclictest3437785-21snmpd11:30:074
34876439910099,1cyclictest3437785-21snmpd09:42:444
34876439910099,1cyclictest3437785-21snmpd08:56:044
34876439910099,1cyclictest3437785-21snmpd08:38:194
34876439910099,1cyclictest3437785-21snmpd08:30:194
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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