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2026-06-26 - 18:26

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 Fri Jun 26, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35344092397378,12sleep150-21swapper/1519:07:417
35332942382376,4sleep50-21swapper/519:05:2111
35344522377370,5sleep80-21swapper/819:08:0614
35344902371351,13sleep140-21swapper/1419:08:286
35345582365328,13sleep30-21swapper/319:09:219
35344312362343,12sleep110-21swapper/1119:07:533
35342572360320,13sleep70-21swapper/719:05:5713
35343622353333,13sleep40-21swapper/419:07:1310
35310922353332,14sleep60-21swapper/619:05:0612
35345312352331,13sleep20-21swapper/219:09:058
35343402352342,7sleep90-21swapper/919:07:0315
35343042351332,12sleep100-21swapper/1019:06:322
35343062348329,13sleep120-21swapper/1219:06:334
35343572346326,13sleep10-21swapper/119:07:111
35345552345325,13sleep00-21swapper/019:09:190
35345682342321,14sleep130-21swapper/1319:09:315
3535006994140,1cyclictest3614849-21kworker/u32:4+flush-259:021:25:170
3535006993427,7cyclictest181ktimers/000:19:270
3535037993230,1cyclictest3737031-21kworker/10:1+events22:31:482
3535006993232,0cyclictest0-21swapper/023:15:220
3535006993231,1cyclictest3870466-21kworker/u32:1+events_unbound00:20:160
353505299310,30cyclictest0-21swapper/1500:09:337
3535043993130,1cyclictest1774-21snmpd23:21:234
353504399310,30cyclictest0-21swapper/1221:15:394
3535037993130,1cyclictest3856452-21kworker/10:1+events00:21:482
3535037993130,1cyclictest3835033-21kworker/10:2+events23:55:162
3535037993130,1cyclictest3835033-21kworker/10:2+events00:00:102
3535037993129,1cyclictest3835033-21kworker/10:2+events23:47:122
3535037993129,1cyclictest3712068-21kworker/10:2+events22:12:462
3535037993129,1cyclictest3705291-21kworker/10:0+events22:08:142
3535037993129,1cyclictest3705291-21kworker/10:0+events22:04:522
3535037993129,1cyclictest1774-21snmpd22:47:032
353503799310,30cyclictest0-21swapper/1022:16:182
353502799310,1cyclictest0-21swapper/721:05:1913
3535022993129,1cyclictest1774-21snmpd00:37:4311
353502299310,30cyclictest0-21swapper/521:55:3911
353502299310,30cyclictest0-21swapper/519:49:5911
353501899310,30cyclictest0-21swapper/420:44:1110
3535016993130,1cyclictest3651467-21mii-tool21:20:149
353501399310,30cyclictest0-21swapper/222:46:378
353501399310,30cyclictest0-21swapper/222:20:578
353501399310,30cyclictest0-21swapper/220:48:358
353501399310,30cyclictest0-21swapper/200:22:398
3535006993131,0cyclictest0-21swapper/023:52:480
3535006993131,0cyclictest0-21swapper/023:30:420
3535006993130,1cyclictest3772022-21kworker/u32:2+events_unbound23:00:160
3535052993029,1cyclictest1774-21snmpd23:41:487
353505299300,29cyclictest0-21swapper/1500:26:367
3535048993029,1cyclictest1774-21snmpd20:26:176
3535048993029,1cyclictest0-21swapper/1421:32:566
3535045993029,1cyclictest0-21swapper/1300:12:305
3535045993027,3cyclictest3677291-21ethtool21:40:145
3535045993027,3cyclictest3677291-21ethtool21:40:145
3535043993029,1cyclictest1774-21snmpd20:22:064
3535043993029,1cyclictest1774-21snmpd19:33:574
353504399300,30cyclictest0-21swapper/1221:24:074
3535039993030,0cyclictest0-21swapper/1100:19:283
3535037993030,0cyclictest3667594-21kworker/10:2+events21:50:582
3535037993030,0cyclictest3667594-21kworker/10:2+events21:50:572
3535037993030,0cyclictest3565142-21kworker/10:1+events21:15:052
3535037993029,1cyclictest3856452-21kworker/10:1+events00:09:502
3535037993029,1cyclictest3835033-21kworker/10:2+events23:44:292
3535037993029,1cyclictest3737031-21kworker/10:1+events23:31:502
3535037993029,1cyclictest3737031-21kworker/10:1+events23:19:242
3535037993029,1cyclictest3737031-21kworker/10:1+events23:08:302
3535037993029,1cyclictest3565142-21kworker/10:1+events21:00:132
3535037993028,1cyclictest3856452-21kworker/10:1+events00:15:262
3535037993028,1cyclictest3726342-21kworker/10:0+events22:28:272
3535037993028,1cyclictest3565142-21kworker/10:1+events21:33:052
3535037993028,1cyclictest3465263-21kworker/10:2+events19:30:192
353503799300,30cyclictest0-21swapper/1000:39:482
3535033993029,1cyclictest3563205-21mii-tool19:40:1415
3535033993029,1cyclictest1774-21snmpd22:47:0115
3535032993029,1cyclictest1774-21snmpd00:03:4214
3535032993026,4cyclictest1774-21snmpd21:33:0814
353503299300,1cyclictest0-21swapper/800:20:1614
3535027993029,1cyclictest3613353-21ethtool20:40:1313
353502799300,1cyclictest0-21swapper/721:41:1713
353502799300,1cyclictest0-21swapper/721:41:1613
3535024993029,1cyclictest3657946-21ethtool21:25:1412
3535024993029,1cyclictest1774-21snmpd21:32:5612
3535018993029,1cyclictest1774-21snmpd23:45:1510
3535018993029,1cyclictest1774-21snmpd22:42:4210
3535018993029,1cyclictest1774-21snmpd22:37:4310
3535018993029,1cyclictest1774-21snmpd21:19:5210
3535018993029,1cyclictest0-21swapper/423:33:0810
353501899300,30cyclictest0-21swapper/400:01:0610
353501899300,1cyclictest0-21swapper/421:37:1410
3535016993029,1cyclictest1774-21snmpd23:17:269
3535016993029,1cyclictest1774-21snmpd21:03:109
3535016993029,1cyclictest1774-21snmpd19:38:549
3535016993029,1cyclictest0-21swapper/323:29:299
353501699300,30cyclictest0-21swapper/322:48:259
353501699300,27cyclictest0-21swapper/322:05:179
3535013993029,1cyclictest1774-21snmpd20:16:388
3535013993029,1cyclictest0-21swapper/223:03:388
3535013993029,1cyclictest0-21swapper/220:11:288
3535010993029,1cyclictest1774-21snmpd19:38:331
3535010993029,1cyclictest0-21swapper/122:35:191
3535006993030,0cyclictest0-21swapper/020:33:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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