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2026-04-19 - 23:22

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 Sun Apr 19, 2026 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18960312120106,9sleep70-21swapper/707:09:467
18959162119104,10sleep40-21swapper/407:08:064
18958702118103,10sleep50-21swapper/507:07:275
1895098211499,9sleep30-21swapper/307:05:173
1895884211196,9sleep10-21swapper/107:07:391
1895793210995,9sleep20-21swapper/207:06:202
1895847210893,10sleep00-21swapper/007:07:060
1895797210894,9sleep60-21swapper/607:06:246
18964679910299,3cyclictest553-21snmpd08:46:336
18964619910299,3cyclictest553-21snmpd08:58:545
18964439910299,3cyclictest553-21snmpd11:21:321
1896443991020,101cyclictest2079324-21ssh10:59:261
1896443991020,0cyclictest0-21swapper/109:55:151
1896472991010,99cyclictest0-21swapper/712:05:267
1896472991010,99cyclictest0-21swapper/708:56:487
1896472991010,99cyclictest0-21swapper/707:51:477
1896472991010,101cyclictest0-21swapper/710:39:577
1896472991010,100cyclictest0-21swapper/711:01:017
1896472991010,100cyclictest0-21swapper/708:00:117
1896467991010,100cyclictest0-21swapper/609:14:476
18964619910199,2cyclictest553-21snmpd10:17:165
18964619910199,2cyclictest553-21snmpd09:18:165
18964619910199,2cyclictest553-21snmpd07:48:055
18964619910198,3cyclictest553-21snmpd10:44:315
18964619910198,3cyclictest553-21snmpd10:35:075
189646199101100,1cyclictest553-21snmpd12:29:305
189646199101100,1cyclictest553-21snmpd10:09:005
1896461991010,101cyclictest0-21swapper/511:56:095
1896461991010,0cyclictest0-21swapper/510:11:065
1896461991010,0cyclictest0-21swapper/509:55:175
18964519910199,2cyclictest553-21snmpd12:32:393
18964519910199,2cyclictest553-21snmpd12:07:533
18964519910199,2cyclictest553-21snmpd10:57:073
18964519910199,2cyclictest553-21snmpd07:18:163
189644899101100,1cyclictest553-21snmpd09:13:192
1896448991010,100cyclictest0-21swapper/212:15:362
1896448991010,100cyclictest0-21swapper/209:39:262
18964439910199,2cyclictest553-21snmpd12:16:241
18964439910199,2cyclictest553-21snmpd10:38:061
18964439910199,2cyclictest553-21snmpd08:17:561
1896443991010,101cyclictest0-21swapper/108:42:271
1896443991010,101cyclictest0-21swapper/108:02:471
1896443991010,100cyclictest0-21swapper/111:17:071
1896443991010,100cyclictest0-21swapper/110:08:491
1896443991010,100cyclictest0-21swapper/108:58:521
18964389910199,2cyclictest1926695-21cat08:05:160
1896438991010,99cyclictest0-21swapper/007:36:470
1896438991010,101cyclictest0-21swapper/009:58:440
1896438991010,100cyclictest0-21swapper/010:16:570
1896438991010,100cyclictest0-21swapper/009:49:320
1896438991010,100cyclictest0-21swapper/009:44:560
18964729910097,1cyclictest0-21swapper/710:20:157
1896472991000,99cyclictest0-21swapper/712:24:037
1896472991000,99cyclictest0-21swapper/709:26:387
1896472991000,99cyclictest0-21swapper/709:26:377
1896472991000,99cyclictest0-21swapper/709:10:527
1896472991000,99cyclictest0-21swapper/708:36:487
1896472991000,1cyclictest0-21swapper/710:43:247
1896472991000,100cyclictest0-21swapper/708:05:297
1896472991000,100cyclictest0-21swapper/707:40:437
18964679910099,1cyclictest553-21snmpd08:43:516
18964679910098,2cyclictest553-21snmpd12:14:486
18964679910098,2cyclictest553-21snmpd11:20:286
1896467991000,99cyclictest0-21swapper/609:56:386
1896467991000,99cyclictest0-21swapper/608:55:096
1896467991000,1cyclictest0-21swapper/609:43:536
18964619910099,1cyclictest553-21snmpd12:18:455
18964619910099,1cyclictest553-21snmpd10:23:095
18964619910098,2cyclictest553-21snmpd12:03:415
18964619910097,3cyclictest553-21snmpd11:36:325
1896461991000,99cyclictest0-21swapper/509:40:145
1896461991000,99cyclictest0-21swapper/509:10:285
1896461991000,99cyclictest0-21swapper/508:15:135
1896461991000,100cyclictest0-21swapper/511:43:535
1896461991000,100cyclictest0-21swapper/509:24:345
1896461991000,100cyclictest0-21swapper/509:24:345
18964589910099,1cyclictest553-21snmpd10:46:034
18964589910099,1cyclictest553-21snmpd08:50:244
18964589910099,1cyclictest553-21snmpd08:40:034
18964589910099,1cyclictest553-21snmpd07:36:344
18964589910099,1cyclictest553-21snmpd07:19:544
18964589910099,1cyclictest2169549-21cat12:20:144
18964589910098,2cyclictest553-21snmpd11:26:024
18964589910098,2cyclictest553-21snmpd10:56:074
1896458991000,99cyclictest0-21swapper/412:39:554
1896458991000,99cyclictest0-21swapper/409:56:174
1896458991000,99cyclictest0-21swapper/407:40:144
1896458991000,100cyclictest0-21swapper/412:13:124
18964519910099,1cyclictest553-21snmpd11:18:343
18964519910099,1cyclictest553-21snmpd08:34:093
18964519910099,1cyclictest553-21snmpd07:51:193
18964519910098,2cyclictest553-21snmpd11:07:103
18964519910098,2cyclictest553-21snmpd10:15:423
18964519910098,2cyclictest553-21snmpd09:03:433
18964519910097,3cyclictest553-21snmpd10:50:543
18964489910098,2cyclictest553-21snmpd11:31:432
1896448991000,99cyclictest0-21swapper/208:45:122
1896448991000,100cyclictest0-21swapper/209:32:132
18964439910099,1cyclictest553-21snmpd12:35:581
18964439910099,1cyclictest553-21snmpd11:14:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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