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2026-04-22 - 04:36

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 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 rack8slot6s.osadl.org (updated Wed Apr 22, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26832991918,1cyclictest65850irq/126-lan20:45:363
26826991919,0cyclictest743-21snmpd23:37:402
26832991818,0cyclictest65850irq/126-lan19:55:123
26832991817,1cyclictest65850irq/126-lan22:25:213
26832991817,1cyclictest65850irq/126-lan21:25:123
26832991817,1cyclictest65850irq/126-lan00:00:123
26826991818,0cyclictest743-21snmpd22:36:172
26826991818,0cyclictest743-21snmpd20:04:062
26826991818,0cyclictest743-21snmpd00:22:202
26826991818,0cyclictest30815-21cat23:15:142
26826991818,0cyclictest21923-21cat00:10:152
26832991717,0cyclictest65850irq/126-lan23:30:103
26832991717,0cyclictest65850irq/126-lan22:15:293
26832991716,1cyclictest65850irq/126-lan23:25:173
26832991716,1cyclictest65850irq/126-lan23:20:003
26832991716,1cyclictest65850irq/126-lan23:02:063
26832991716,1cyclictest65850irq/126-lan22:42:183
26832991716,1cyclictest65850irq/126-lan00:20:133
26826991717,0cyclictest9915-21cat21:05:142
26826991717,0cyclictest743-21snmpd23:20:432
26826991717,0cyclictest743-21snmpd22:56:112
26826991717,0cyclictest743-21snmpd22:23:262
26826991717,0cyclictest743-21snmpd22:13:552
26826991717,0cyclictest743-21snmpd20:44:042
26826991717,0cyclictest20083-21cat20:10:152
26832991616,0cyclictest65850irq/126-lan21:50:153
26832991616,0cyclictest65850irq/126-lan20:50:203
26832991616,0cyclictest65850irq/126-lan00:30:123
26832991616,0cyclictest65850irq/126-lan00:16:363
26832991615,1cyclictest65850irq/126-lan23:50:183
26832991615,1cyclictest65850irq/126-lan23:40:163
26832991615,1cyclictest65850irq/126-lan22:52:073
26832991615,1cyclictest65850irq/126-lan20:15:153
26832991615,1cyclictest65850irq/126-lan20:10:183
26832991615,1cyclictest65850irq/126-lan20:01:063
26832991615,1cyclictest65850irq/126-lan19:45:053
26832991615,1cyclictest65850irq/126-lan00:10:183
26826991616,0cyclictest743-21snmpd20:51:342
26826991616,0cyclictest743-21snmpd00:28:272
26826991616,0cyclictest12665-21cat22:30:142
26832991515,0cyclictest65850irq/126-lan23:45:173
26832991515,0cyclictest65850irq/126-lan22:34:563
26832991515,0cyclictest65850irq/126-lan22:00:213
26832991515,0cyclictest65850irq/126-lan21:55:053
26832991515,0cyclictest65850irq/126-lan21:40:163
26832991514,1cyclictest65850irq/126-lan23:19:593
26832991514,1cyclictest65850irq/126-lan22:10:173
26832991514,1cyclictest65850irq/126-lan21:45:213
26832991514,1cyclictest65850irq/126-lan21:05:113
26832991514,1cyclictest65850irq/126-lan20:25:153
26832991514,1cyclictest65850irq/126-lan19:25:173
26832991414,0cyclictest65850irq/126-lan22:35:163
26832991414,0cyclictest65850irq/126-lan20:35:213
26832991414,0cyclictest65850irq/126-lan20:30:113
26832991413,1cyclictest65850irq/126-lan21:20:143
26832991413,1cyclictest65850irq/126-lan19:50:123
26832991413,1cyclictest65850irq/126-lan19:40:123
26832991413,1cyclictest65850irq/126-lan19:30:123
26832991413,1cyclictest65850irq/126-lan19:20:063
26832991413,1cyclictest65850irq/126-lan19:15:243
26832991413,1cyclictest65850irq/126-lan00:25:193
26832991413,1cyclictest65850irq/126-lan00:05:143
26832991313,0cyclictest65850irq/126-lan23:55:063
26832991313,0cyclictest65850irq/126-lan22:45:143
26832991313,0cyclictest65850irq/126-lan22:21:063
26832991313,0cyclictest65850irq/126-lan20:42:273
26832991312,1cyclictest65850irq/126-lan23:05:153
26832991312,1cyclictest65850irq/126-lan20:55:133
26832991312,1cyclictest65850irq/126-lan19:35:213
26832991212,0cyclictest65850irq/126-lan22:05:183
26832991212,0cyclictest65850irq/126-lan21:32:073
26832991212,0cyclictest65850irq/126-lan00:35:163
26832991211,1cyclictest65850irq/126-lan22:55:213
26832991211,1cyclictest65850irq/126-lan21:00:193
26832991111,0cyclictest65850irq/126-lan23:12:053
26832991110,1cyclictest65850irq/126-lan21:35:193
26832991110,1cyclictest65850irq/126-lan19:10:113
2683299109,1cyclictest65850irq/126-lan21:14:053
26832991010,0cyclictest65850irq/126-lan23:35:173
268329999,0cyclictest65850irq/126-lan21:15:183
268329998,1cyclictest741-21lldpd20:23:373
268229998,1cyclictest743-21snmpd23:01:291
268229998,1cyclictest741-21lldpd22:07:181
268229998,1cyclictest741-21lldpd00:15:471
268159998,1cyclictest743-21snmpd20:57:010
268159998,1cyclictest743-21snmpd19:53:180
268159998,1cyclictest741-21lldpd00:30:440
268159998,1cyclictest25744-21fschecks_count00:20:120
268329988,0cyclictest65850irq/126-lan20:05:153
268269988,0cyclictest743-21snmpd23:46:582
268269988,0cyclictest743-21snmpd00:18:082
268269988,0cyclictest741-21lldpd23:40:032
268269988,0cyclictest741-21lldpd22:40:232
268269988,0cyclictest741-21lldpd19:18:122
268269987,1cyclictest743-21snmpd20:39:252
268229988,0cyclictest743-21snmpd22:32:041
268229988,0cyclictest743-21snmpd21:37:581
268229988,0cyclictest743-21snmpd19:44:301
268229988,0cyclictest743-21snmpd19:32:321
268229988,0cyclictest743-21snmpd19:12:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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