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2025-10-19 - 22:36

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 Sun Oct 19, 2025 00:46:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26532992372355,10sleep150-21swapper/1519:07:487
26534672362341,14sleep110-21swapper/1119:09:533
26534032362346,10sleep120-21swapper/1219:09:064
26533052362342,13sleep30-21swapper/319:07:539
26533462361354,5sleep20-21swapper/219:08:248
26533562353342,7sleep60-21swapper/619:08:2712
26533322352332,13sleep70-21swapper/719:08:1313
26534052350331,12sleep140-21swapper/1419:09:076
26533122350331,12sleep90-21swapper/919:07:5915
26534662349328,14sleep100-21swapper/1019:09:522
26531572345325,13sleep130-21swapper/1319:06:105
26531422344324,13sleep50-21swapper/519:06:0111
26531502343324,13sleep80-21swapper/819:06:0514
26531962342321,14sleep10-21swapper/119:06:291
26533062341321,13sleep40-21swapper/419:07:5410
26533012341321,13sleep00-21swapper/019:07:490
265398099413,25cyclictest0-21swapper/523:34:3911
2653975993533,2cyclictest2898031-21kworker/u32:4+flush-259:000:00:289
2654007993330,1cyclictest0-21swapper/1421:52:106
2654007993329,1cyclictest1878-21snmpd19:10:276
2653991993329,3cyclictest2678005-21mii-tool19:35:1715
265396599330,32cyclictest0-21swapper/022:20:010
265401199329,23cyclictest0-21swapper/1523:34:137
265399199320,1cyclictest0-21swapper/920:21:1815
265398099328,11cyclictest0-21swapper/521:33:5011
265398099328,11cyclictest0-21swapper/521:33:5011
265398099328,11cyclictest0-21swapper/519:11:0311
2653965993228,3cyclictest1878-21snmpd19:23:500
265400799310,30cyclictest0-21swapper/1423:06:056
265400799310,1cyclictest0-21swapper/1420:41:526
2654004993130,1cyclictest0-21swapper/1300:29:185
2654004993130,1cyclictest0-21swapper/1300:29:185
265400199310,30cyclictest0-21swapper/1220:27:344
2653991993129,2cyclictest1878-21snmpd22:31:2315
2653991993125,6cyclictest0-21swapper/919:25:1715
2653990993130,1cyclictest1878-21snmpd21:01:4114
2653982993128,3cyclictest2900638-21mii-tool00:00:1612
265398299310,30cyclictest0-21swapper/621:27:5412
265398299310,30cyclictest0-21swapper/621:27:5412
265398099316,25cyclictest0-21swapper/523:01:4211
265398099310,30cyclictest0-21swapper/523:15:3011
2653977993129,1cyclictest2707739-21kworker/4:0+events20:21:2310
2653977993129,1cyclictest2587834-21kworker/4:1+events19:14:2510
265397799310,1cyclictest0-21swapper/421:17:1410
2653975993130,1cyclictest2753919-21nodev-device-ev21:05:219
265397599310,30cyclictest0-21swapper/319:30:499
2653965993128,3cyclictest1878-21snmpd23:03:420
265396599310,30cyclictest0-21swapper/022:19:310
265396599310,29cyclictest0-21swapper/021:50:170
2654011993029,1cyclictest1878-21snmpd00:39:217
2654011993029,1cyclictest1878-21snmpd00:39:217
265401199300,29cyclictest0-21swapper/1522:10:157
265401199300,1cyclictest0-21swapper/1519:17:097
2654007993029,1cyclictest1878-21snmpd23:26:006
2654007993029,1cyclictest1878-21snmpd21:38:246
2654007993029,1cyclictest1878-21snmpd19:22:266
2654004993029,1cyclictest1878-21snmpd22:07:465
265400499300,30cyclictest0-21swapper/1322:48:535
265400499300,29cyclictest0-21swapper/1322:50:295
2654001993029,1cyclictest1878-21snmpd21:51:584
2654001993029,1cyclictest1878-21snmpd21:49:394
2654001993029,1cyclictest1878-21snmpd20:40:034
2653996993029,1cyclictest1878-21snmpd20:24:452
265399699300,29cyclictest0-21swapper/1000:31:182
265399699300,29cyclictest0-21swapper/1000:31:182
2653991993029,1cyclictest0-21swapper/922:59:3015
265399199300,29cyclictest0-21swapper/923:51:1915
2653990993029,1cyclictest1878-21snmpd22:29:0814
265399099300,30cyclictest0-21swapper/822:20:3414
265399099300,30cyclictest0-21swapper/821:59:5114
265399099300,30cyclictest0-21swapper/820:11:3614
265399099300,30cyclictest0-21swapper/819:24:1614
265399099300,29cyclictest0-21swapper/823:10:4814
265399099300,1cyclictest0-21swapper/823:07:4214
2653986993029,1cyclictest2863151-21nodev-device-ev23:15:1813
265398699300,30cyclictest0-21swapper/720:57:3813
265398699300,29cyclictest0-21swapper/700:23:1413
265398699300,1cyclictest0-21swapper/720:34:4213
265398699300,1cyclictest0-21swapper/719:14:2413
2653982993029,1cyclictest1878-21snmpd23:30:0412
2653982993029,1cyclictest1878-21snmpd22:57:2712
2653982993029,1cyclictest0-21swapper/619:15:0012
2653982993026,4cyclictest1878-21snmpd22:28:5912
2653980993029,1cyclictest2921653-21ethtool00:25:1611
2653980993029,1cyclictest2921653-21ethtool00:25:1611
2653980993029,1cyclictest2658914-21ethtool19:15:0111
2653977993029,1cyclictest2707739-21kworker/4:0+events23:45:2910
2653977993029,1cyclictest2707739-21kworker/4:0+events22:50:2310
2653977993029,1cyclictest2707739-21kworker/4:0+events22:15:0510
2653977993029,1cyclictest2707739-21kworker/4:0+events22:10:1310
2653977993029,1cyclictest2707739-21kworker/4:0+events21:10:1910
2653977993029,1cyclictest2707739-21kworker/4:0+events21:05:2310
2653977993029,1cyclictest2707739-21kworker/4:0+events20:50:2510
2653977993029,1cyclictest2707739-21kworker/4:0+events20:40:1610
2653977993029,1cyclictest2707739-21kworker/4:0+events00:36:1510
2653977993029,1cyclictest2707739-21kworker/4:0+events00:36:1510
2653977993028,1cyclictest2707739-21kworker/4:0+events23:27:5510
2653975993030,0cyclictest0-21swapper/320:40:169
2653975993029,1cyclictest0-21swapper/319:45:499
2653970993029,1cyclictest1878-21snmpd00:17:208
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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