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2025-12-11 - 07:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #7

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 792 highest latencies:
System rack8slot7s.osadl.org (updated Thu Dec 11, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16532992019,1cyclictest55650irq/125-lan22:54:360
16532991919,0cyclictest55650irq/125-lan21:34:290
16532991918,1cyclictest55650irq/125-lan23:55:120
16532991918,1cyclictest55650irq/125-lan23:40:500
16532991918,1cyclictest55650irq/125-lan23:20:460
16532991918,1cyclictest55650irq/125-lan23:02:110
16532991918,1cyclictest55650irq/125-lan22:47:220
16532991918,1cyclictest55650irq/125-lan22:35:530
16532991918,1cyclictest55650irq/125-lan22:31:300
16532991918,1cyclictest55650irq/125-lan22:10:240
16532991918,1cyclictest55650irq/125-lan22:07:420
16532991918,1cyclictest55650irq/125-lan22:00:570
16532991918,1cyclictest55650irq/125-lan21:41:030
16532991918,1cyclictest55650irq/125-lan21:37:500
16532991918,1cyclictest55650irq/125-lan21:26:180
16532991918,1cyclictest55650irq/125-lan21:15:450
16532991918,1cyclictest55650irq/125-lan20:44:350
16532991918,1cyclictest55650irq/125-lan19:47:060
16532991918,1cyclictest55650irq/125-lan19:38:250
16532991918,1cyclictest55650irq/125-lan00:34:570
16532991918,1cyclictest55650irq/125-lan00:26:450
16532991918,1cyclictest55650irq/125-lan00:16:390
16532991918,1cyclictest55650irq/125-lan00:02:440
16532991818,0cyclictest55650irq/125-lan23:48:020
16532991818,0cyclictest55650irq/125-lan23:39:570
16532991818,0cyclictest55650irq/125-lan22:21:190
16532991818,0cyclictest55650irq/125-lan22:16:010
16532991818,0cyclictest55650irq/125-lan21:50:210
16532991818,0cyclictest55650irq/125-lan20:25:550
16532991818,0cyclictest55650irq/125-lan00:37:060
16532991818,0cyclictest55650irq/125-lan00:11:080
16532991817,1cyclictest55650irq/125-lan23:53:190
16532991817,1cyclictest55650irq/125-lan23:28:540
16532991817,1cyclictest55650irq/125-lan23:19:470
16532991817,1cyclictest55650irq/125-lan23:10:330
16532991817,1cyclictest55650irq/125-lan23:06:250
16532991817,1cyclictest55650irq/125-lan22:44:450
16532991817,1cyclictest55650irq/125-lan22:25:140
16532991817,1cyclictest55650irq/125-lan21:56:510
16532991817,1cyclictest55650irq/125-lan21:46:020
16532991817,1cyclictest55650irq/125-lan21:21:150
16532991817,1cyclictest55650irq/125-lan21:11:240
16532991817,1cyclictest55650irq/125-lan21:06:220
16532991817,1cyclictest55650irq/125-lan20:57:460
16532991817,1cyclictest55650irq/125-lan19:32:230
16532991817,1cyclictest55650irq/125-lan00:24:470
16532991717,0cyclictest55650irq/125-lan22:59:190
16532991717,0cyclictest55650irq/125-lan20:36:470
16532991717,0cyclictest55650irq/125-lan20:10:410
16532991717,0cyclictest55650irq/125-lan20:02:250
16532991716,1cyclictest55650irq/125-lan23:31:130
16532991716,1cyclictest55650irq/125-lan20:50:220
16532991716,1cyclictest55650irq/125-lan20:44:590
16532991716,1cyclictest55650irq/125-lan20:31:590
16532991716,1cyclictest55650irq/125-lan20:05:140
16532991716,1cyclictest55650irq/125-lan19:55:230
16532991716,1cyclictest55650irq/125-lan19:25:240
16532991716,1cyclictest55650irq/125-lan00:05:190
16532991616,0cyclictest703-21snmpd21:02:440
16532991616,0cyclictest703-21snmpd19:54:300
16532991616,0cyclictest703-21snmpd19:40:410
16532991616,0cyclictest55650irq/125-lan20:19:300
16532991615,1cyclictest55650irq/125-lan20:20:010
16532991515,0cyclictest703-21snmpd19:14:370
16534991311,2cyclictest703-21snmpd23:14:361
16532991313,0cyclictest55650irq/125-lan19:21:080
16532991313,0cyclictest55650irq/125-lan19:15:140
1653499106,3cyclictest703-21snmpd23:57:391
1653499106,3cyclictest703-21snmpd21:48:121
1653499106,3cyclictest703-21snmpd20:14:111
165349998,1cyclictest703-21snmpd20:38:421
165349998,1cyclictest703-21snmpd00:13:581
165349998,1cyclictest12140-21ntp_offset23:00:171
165349996,3cyclictest703-21snmpd23:34:481
165349996,3cyclictest703-21snmpd22:53:111
165349996,2cyclictest703-21snmpd22:34:491
165349996,2cyclictest703-21snmpd21:20:551
165349996,2cyclictest703-21snmpd19:33:551
165349995,3cyclictest703-21snmpd23:49:341
165349995,3cyclictest703-21snmpd22:11:131
165349988,0cyclictest703-21snmpd22:56:411
165349988,0cyclictest703-21snmpd20:21:461
165349988,0cyclictest703-21snmpd00:25:021
165349988,0cyclictest703-21snmpd00:19:561
165349988,0cyclictest703-21snmpd00:02:241
165349987,1cyclictest703-21snmpd23:16:411
165349987,1cyclictest703-21snmpd22:20:491
165349987,1cyclictest703-21snmpd19:45:261
165349987,1cyclictest478-21gmain21:52:321
165349987,1cyclictest28153-21ntp_kernel_pll_21:05:161
165349987,1cyclictest20879-21fschecks_time22:05:141
165349987,1cyclictest17377-21gltestperf19:10:151
165349987,1cyclictest13217-21sendmail_mailqu20:25:221
165349987,1cyclictest0-21swapper/123:35:171
165349986,2cyclictest703-21snmpd21:17:161
165349985,3cyclictest703-21snmpd19:51:391
165349985,2cyclictest703-21snmpd20:50:021
165349985,2cyclictest703-21snmpd20:45:511
165349985,2cyclictest703-21snmpd19:57:051
165349985,2cyclictest27375-21cat00:20:161
165349984,4cyclictest10925-21grep21:55:171
165349977,0cyclictest703-21snmpd23:09:511
165349977,0cyclictest703-21snmpd20:41:061
165349977,0cyclictest703-21snmpd20:16:281
165349977,0cyclictest703-21snmpd19:27:041
165349976,1cyclictest703-21snmpd23:40:481
165349976,1cyclictest703-21snmpd22:15:131
165349976,1cyclictest703-21snmpd19:19:491
165349976,1cyclictest703-21snmpd00:32:491
165349976,1cyclictest5060-21cat23:25:151
165349976,1cyclictest1141-21cron22:50:011
165349975,2cyclictest22571-21cat21:35:161
165349975,1cyclictest26342-21cpuspeed_turbos19:35:111
165349974,3cyclictest703-21snmpd21:13:411
165349974,2cyclictest703-21snmpd22:27:161
165349974,2cyclictest703-21snmpd22:00:451
165349974,2cyclictest703-21snmpd19:23:371
165349973,3cyclictest703-21snmpd21:28:321
165349970,2cyclictest23267-21sh22:40:001
165349966,0cyclictest703-21snmpd21:00:291
165349966,0cyclictest703-21snmpd20:08:291
165349965,1cyclictest703-21snmpd23:53:521
165349965,1cyclictest703-21snmpd21:31:421
165349965,1cyclictest703-21snmpd20:34:521
165349965,1cyclictest3330-21fschecks_time20:00:151
165349965,1cyclictest28661-21missed_timers19:40:181
165349965,1cyclictest23779-21/usr/sbin/munin20:55:191
165349965,1cyclictest16526-21cyclictest00:05:221
165349964,1cyclictest0-21swapper/123:20:131
165349963,2cyclictest0-21swapper/122:40:131
165349953,1cyclictest0-21swapper/121:40:201
165349953,1cyclictest0-21swapper/100:35:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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