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2026-04-26 - 04:31

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #6

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 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 rack8slot6s.osadl.org (updated Sun Apr 26, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3427993938,1cyclictest14864-21fwupd22:14:263
3427991818,0cyclictest65850irq/126-lan23:21:363
3427991818,0cyclictest65850irq/126-lan23:10:223
3427991818,0cyclictest65850irq/126-lan20:56:123
3427991818,0cyclictest65850irq/126-lan20:50:153
3427991818,0cyclictest65850irq/126-lan20:08:213
3427991717,0cyclictest65850irq/126-lan22:50:143
3427991717,0cyclictest65850irq/126-lan22:35:183
3427991717,0cyclictest65850irq/126-lan22:30:123
3427991717,0cyclictest65850irq/126-lan21:50:223
3427991717,0cyclictest65850irq/126-lan19:45:183
3427991717,0cyclictest65850irq/126-lan00:23:293
3427991716,1cyclictest65850irq/126-lan23:05:133
3427991716,1cyclictest65850irq/126-lan20:45:123
3427991716,1cyclictest65850irq/126-lan19:10:183
3427991716,1cyclictest65850irq/126-lan00:30:143
3427991616,0cyclictest65850irq/126-lan23:40:163
3427991616,0cyclictest65850irq/126-lan23:30:413
3427991616,0cyclictest65850irq/126-lan22:45:143
3427991616,0cyclictest65850irq/126-lan20:30:153
3427991616,0cyclictest65850irq/126-lan00:29:383
3427991616,0cyclictest65850irq/126-lan00:10:193
3427991616,0cyclictest65850irq/126-lan00:00:153
3427991515,0cyclictest65850irq/126-lan23:50:203
3427991515,0cyclictest65850irq/126-lan23:45:173
3427991515,0cyclictest65850irq/126-lan23:25:113
3427991515,0cyclictest65850irq/126-lan22:59:433
3427991515,0cyclictest65850irq/126-lan21:01:483
3427991515,0cyclictest65850irq/126-lan20:10:173
3427991515,0cyclictest65850irq/126-lan19:55:173
3427991515,0cyclictest65850irq/126-lan19:50:213
3427991414,0cyclictest65850irq/126-lan21:35:163
3427991414,0cyclictest65850irq/126-lan21:20:133
3427991414,0cyclictest65850irq/126-lan20:16:493
3427991414,0cyclictest65850irq/126-lan19:24:523
3427991413,1cyclictest65850irq/126-lan23:55:173
3427991413,1cyclictest65850irq/126-lan21:05:123
3427991413,1cyclictest65850irq/126-lan00:35:143
3427991313,0cyclictest65850irq/126-lan22:15:013
3427991313,0cyclictest65850irq/126-lan21:40:203
3427991313,0cyclictest65850irq/126-lan21:11:533
3427991313,0cyclictest65850irq/126-lan19:42:343
3427991313,0cyclictest65850irq/126-lan19:30:013
3427991313,0cyclictest65850irq/126-lan19:15:193
3427991313,0cyclictest65850irq/126-lan00:15:433
3427991313,0cyclictest65850irq/126-lan00:05:143
3427991312,1cyclictest65850irq/126-lan19:35:133
3427991212,0cyclictest65850irq/126-lan22:00:143
3427991212,0cyclictest65850irq/126-lan21:30:193
3427991212,0cyclictest65850irq/126-lan21:30:193
3427991212,0cyclictest65850irq/126-lan20:40:113
3427991212,0cyclictest65850irq/126-lan20:35:153
3427991211,1cyclictest65850irq/126-lan20:00:203
3427991111,0cyclictest65850irq/126-lan21:49:433
3427991111,0cyclictest65850irq/126-lan20:24:593
342799109,1cyclictest65850irq/126-lan23:20:003
3427991010,0cyclictest65850irq/126-lan22:43:433
3427991010,0cyclictest65850irq/126-lan22:05:173
3427991010,0cyclictest65850irq/126-lan21:55:163
34279999,0cyclictest65850irq/126-lan20:25:173
34279999,0cyclictest65850irq/126-lan19:25:183
34249998,1cyclictest743-21snmpd19:29:182
34249998,1cyclictest741-21lldpd20:17:172
34219998,1cyclictest743-21snmpd19:53:511
34219998,1cyclictest506-21systemd-resolve22:01:351
34169998,1cyclictest743-21snmpd19:11:560
34169995,3cyclictest743-21snmpd00:10:120
34279988,0cyclictest741-21lldpd22:29:233
34279988,0cyclictest65850irq/126-lan23:35:153
34279988,0cyclictest65850irq/126-lan22:20:433
34249988,0cyclictest743-21snmpd00:14:242
34249988,0cyclictest741-21lldpd22:46:532
34249988,0cyclictest741-21lldpd21:46:102
34249988,0cyclictest741-21lldpd19:56:102
34249988,0cyclictest741-21lldpd00:01:062
34249987,1cyclictest741-21lldpd22:34:112
34249987,1cyclictest741-21lldpd22:29:252
34249987,1cyclictest741-21lldpd21:55:562
34249987,1cyclictest741-21lldpd21:36:302
34249986,2cyclictest743-21snmpd22:08:292
34249986,2cyclictest17681-21cat22:20:152
34219988,0cyclictest743-21snmpd20:46:171
34219988,0cyclictest743-21snmpd19:44:151
34219988,0cyclictest741-21lldpd23:09:171
34219988,0cyclictest741-21lldpd20:11:571
34219987,1cyclictest743-21snmpd22:40:211
34219987,1cyclictest743-21snmpd21:31:581
34219987,1cyclictest743-21snmpd21:31:581
34219987,1cyclictest743-21snmpd00:05:211
34219987,1cyclictest741-21lldpd22:49:391
34219986,2cyclictest743-21snmpd23:53:241
34219986,2cyclictest743-21snmpd22:17:261
34219986,2cyclictest743-21snmpd22:07:111
34219986,2cyclictest743-21snmpd21:43:101
34219986,2cyclictest743-21snmpd19:56:521
34219986,2cyclictest743-21snmpd00:04:331
34169988,0cyclictest743-21snmpd21:53:040
34169988,0cyclictest741-21lldpd23:59:540
34169988,0cyclictest741-21lldpd21:59:000
34169988,0cyclictest741-21lldpd21:46:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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