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2026-08-23 - 11:50

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 Aug 23, 2026 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1680089212798,9sleep30-21swapper/319:05:523
16802182119105,9sleep00-21swapper/019:07:400
16802012119104,10sleep10-21swapper/119:07:251
16801292119105,9sleep50-21swapper/519:06:255
16801032116101,10sleep60-21swapper/619:06:026
16803822115101,9sleep20-21swapper/219:09:592
1680269211499,9sleep40-21swapper/419:08:244
1680160210894,9sleep70-21swapper/719:06:517
1680628991030,100cyclictest0-21swapper/523:08:415
16806289910299,3cyclictest553-21snmpd20:06:325
1680636991010,100cyclictest0-21swapper/723:41:547
1680636991010,100cyclictest0-21swapper/719:58:447
16806339910199,2cyclictest553-21snmpd23:12:236
16806339910199,2cyclictest553-21snmpd19:50:026
1680633991010,100cyclictest0-21swapper/600:00:076
16806289910199,2cyclictest553-21snmpd20:18:455
16806289910199,2cyclictest1707870-21cat20:00:175
16806289910198,3cyclictest553-21snmpd21:56:425
16806289910198,3cyclictest1827937-21cat22:25:155
168062699101100,1cyclictest553-21snmpd23:29:274
16806179910199,2cyclictest553-21snmpd21:40:052
16806179910198,3cyclictest553-21snmpd22:14:392
16806179910198,3cyclictest553-21snmpd00:21:102
1680617991010,99cyclictest0-21swapper/223:25:062
16806139910199,2cyclictest553-21snmpd23:44:451
16806139910198,1cyclictest553-21snmpd22:34:071
1680608991010,100cyclictest0-21swapper/000:04:010
16806369910099,1cyclictest0-21swapper/722:06:427
1680636991000,99cyclictest0-21swapper/723:24:457
1680636991000,99cyclictest0-21swapper/723:13:597
1680636991000,99cyclictest0-21swapper/721:56:217
1680636991000,99cyclictest0-21swapper/720:22:427
1680636991000,99cyclictest0-21swapper/720:15:327
1680636991000,100cyclictest0-21swapper/721:46:487
1680636991000,100cyclictest0-21swapper/720:25:217
16806339910099,1cyclictest553-21snmpd23:07:416
16806339910099,1cyclictest553-21snmpd23:00:386
16806339910099,1cyclictest553-21snmpd22:00:396
16806339910099,1cyclictest553-21snmpd21:48:246
16806339910099,1cyclictest553-21snmpd20:42:426
16806339910099,1cyclictest553-21snmpd20:36:576
16806339910099,1cyclictest553-21snmpd19:21:436
16806339910099,1cyclictest553-21snmpd19:18:126
16806339910099,1cyclictest553-21snmpd00:32:206
16806339910099,1cyclictest1733355-21cat20:50:146
16806339910099,0cyclictest553-21snmpd20:31:346
1680633991000,99cyclictest0-21swapper/600:08:016
1680633991000,100cyclictest0-21swapper/623:22:336
1680633991000,100cyclictest0-21swapper/622:56:386
16806289910099,1cyclictest553-21snmpd21:49:155
16806289910099,1cyclictest553-21snmpd21:29:385
16806289910099,1cyclictest553-21snmpd20:14:355
16806289910099,1cyclictest553-21snmpd19:14:315
16806289910098,2cyclictest553-21snmpd21:16:225
16806289910098,2cyclictest0-21swapper/519:33:405
16806269910099,1cyclictest553-21snmpd23:03:144
16806269910099,1cyclictest553-21snmpd21:07:524
16806269910099,1cyclictest553-21snmpd19:37:494
16806269910099,1cyclictest553-21snmpd00:17:284
16806269910099,1cyclictest553-21snmpd00:00:194
16806269910098,2cyclictest553-21snmpd21:55:064
1680626991000,100cyclictest0-21swapper/423:53:014
1680626991000,100cyclictest0-21swapper/423:34:334
16806229910099,1cyclictest553-21snmpd23:48:063
16806229910099,1cyclictest553-21snmpd23:03:563
16806229910099,1cyclictest553-21snmpd22:35:583
16806229910099,1cyclictest553-21snmpd22:06:393
16806229910099,1cyclictest553-21snmpd20:45:553
16806229910099,1cyclictest553-21snmpd20:05:413
16806179910099,1cyclictest553-21snmpd22:54:112
16806179910099,1cyclictest553-21snmpd21:01:282
16806179910099,1cyclictest1833495-21cat22:30:152
16806179910098,1cyclictest553-21snmpd22:22:132
1680617991000,99cyclictest1742562-21diskmemload21:59:092
1680617991000,99cyclictest0-21swapper/223:17:412
1680617991000,99cyclictest0-21swapper/222:47:262
1680617991000,100cyclictest0-21swapper/219:50:142
1680617991000,100cyclictest0-21swapper/219:45:372
16806139910099,1cyclictest553-21snmpd23:19:081
16806139910099,1cyclictest553-21snmpd22:53:291
16806139910099,1cyclictest553-21snmpd00:12:311
1680613991000,100cyclictest0-21swapper/120:21:361
1680613991000,100cyclictest0-21swapper/119:55:131
16806089910099,1cyclictest553-21snmpd19:17:570
16806089910099,1cyclictest161rcuc/021:41:590
16806089910098,2cyclictest553-21snmpd22:05:090
16806089910098,2cyclictest553-21snmpd19:36:460
1680608991001,0cyclictest0-21swapper/019:42:310
1680608991000,99cyclictest0-21swapper/021:56:240
1680608991000,99cyclictest0-21swapper/021:35:170
1680608991000,99cyclictest0-21swapper/020:26:450
1680608991000,100cyclictest0-21swapper/023:47:570
1680608991000,100cyclictest0-21swapper/019:46:490
168063699990,99cyclictest0-21swapper/721:36:567
168063699990,99cyclictest0-21swapper/721:26:447
168063699990,99cyclictest0-21swapper/719:27:527
168063699990,99cyclictest0-21swapper/700:16:237
168063699990,98cyclictest0-21swapper/721:15:227
168063699990,98cyclictest0-21swapper/721:14:167
168063699990,98cyclictest0-21swapper/720:02:087
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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