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2026-07-04 - 10:53

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 Sat Jul 04, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19660993838,0cyclictest18602-21fwupd00:20:371
19656991918,1cyclictest65850irq/126-lan21:55:160
19669991818,0cyclictest743-21snmpd23:58:272
19669991818,0cyclictest743-21snmpd22:41:532
19669991818,0cyclictest743-21snmpd21:53:542
19669991818,0cyclictest743-21snmpd20:48:592
19669991818,0cyclictest743-21snmpd00:39:252
19656991818,0cyclictest65850irq/126-lan00:31:550
19656991817,1cyclictest65850irq/126-lan23:35:110
19656991817,1cyclictest65850irq/126-lan22:28:300
19656991817,1cyclictest65850irq/126-lan00:25:190
19656991817,1cyclictest65850irq/126-lan00:25:000
19669991717,0cyclictest743-21snmpd23:47:562
19669991717,0cyclictest743-21snmpd23:42:532
19669991717,0cyclictest743-21snmpd22:18:112
19669991717,0cyclictest743-21snmpd22:10:382
19669991717,0cyclictest743-21snmpd20:55:192
19669991717,0cyclictest743-21snmpd00:26:252
19669991717,0cyclictest743-21snmpd00:17:232
19669991716,1cyclictest743-21snmpd22:04:052
19656991717,0cyclictest65850irq/126-lan21:46:210
19656991717,0cyclictest65850irq/126-lan21:33:590
19656991716,1cyclictest65850irq/126-lan20:44:340
19656991716,1cyclictest65850irq/126-lan20:35:230
19656991716,1cyclictest65850irq/126-lan20:30:190
19656991716,1cyclictest65850irq/126-lan20:00:110
19656991616,0cyclictest65850irq/126-lan19:16:210
19656991616,0cyclictest65850irq/126-lan00:10:150
19656991615,1cyclictest65850irq/126-lan23:10:180
19656991615,1cyclictest65850irq/126-lan20:26:200
19656991615,1cyclictest65850irq/126-lan19:25:200
19656991615,1cyclictest65850irq/126-lan00:05:200
19656991515,0cyclictest65850irq/126-lan23:50:180
19656991515,0cyclictest65850irq/126-lan21:20:180
19656991514,1cyclictest65850irq/126-lan23:05:180
19656991514,1cyclictest65850irq/126-lan22:40:170
19656991514,1cyclictest65850irq/126-lan22:20:200
19656991514,1cyclictest65850irq/126-lan22:10:110
19656991514,1cyclictest65850irq/126-lan22:00:130
19656991514,1cyclictest65850irq/126-lan21:25:120
19656991514,1cyclictest65850irq/126-lan20:20:190
19656991514,1cyclictest65850irq/126-lan20:10:200
19669991414,0cyclictest743-21snmpd19:12:262
19656991414,0cyclictest65850irq/126-lan23:45:100
19656991414,0cyclictest65850irq/126-lan23:40:170
19656991414,0cyclictest65850irq/126-lan23:25:110
19656991414,0cyclictest65850irq/126-lan21:15:120
19656991414,0cyclictest65850irq/126-lan19:23:210
19656991414,0cyclictest65850irq/126-lan00:35:140
19656991413,1cyclictest65850irq/126-lan23:30:140
19656991413,1cyclictest65850irq/126-lan22:45:140
19656991413,1cyclictest65850irq/126-lan22:30:180
19656991413,1cyclictest65850irq/126-lan20:55:210
19656991413,1cyclictest65850irq/126-lan19:50:150
19656991313,0cyclictest65850irq/126-lan22:50:110
19656991313,0cyclictest65850irq/126-lan21:09:350
19656991312,1cyclictest65850irq/126-lan23:55:170
19656991312,1cyclictest65850irq/126-lan23:20:150
19656991312,1cyclictest65850irq/126-lan20:50:150
19656991312,1cyclictest65850irq/126-lan20:15:210
19656991312,1cyclictest65850irq/126-lan19:55:160
19656991312,1cyclictest65850irq/126-lan19:35:200
19656991312,1cyclictest65850irq/126-lan19:30:110
19656991211,1cyclictest65850irq/126-lan22:55:180
19656991211,1cyclictest65850irq/126-lan19:10:210
19656991111,0cyclictest65850irq/126-lan00:15:170
19656991110,1cyclictest65850irq/126-lan22:35:180
19656991110,1cyclictest65850irq/126-lan20:05:150
19656991110,1cyclictest65850irq/126-lan19:40:130
19656991110,1cyclictest65850irq/126-lan00:00:160
1965699109,1cyclictest65850irq/126-lan23:00:100
1965699109,1cyclictest65850irq/126-lan20:48:360
1965699109,1cyclictest65850irq/126-lan19:45:120
19656991010,0cyclictest65850irq/126-lan22:15:100
196769998,1cyclictest743-21snmpd21:58:113
196699998,1cyclictest743-21snmpd22:05:112
196699998,1cyclictest743-21snmpd00:23:132
196609998,1cyclictest743-21snmpd20:33:201
196569999,0cyclictest65850irq/126-lan21:36:450
196569999,0cyclictest65850irq/126-lan21:36:450
196569998,1cyclictest65850irq/126-lan23:15:220
196569998,1cyclictest65850irq/126-lan21:00:160
196769988,0cyclictest743-21snmpd22:49:483
196769988,0cyclictest741-21lldpd22:10:323
196769988,0cyclictest741-21lldpd19:37:413
196769987,1cyclictest741-21lldpd19:11:083
196769987,1cyclictest18028-21ntp_kernel_pll_23:00:143
196769986,2cyclictest743-21snmpd21:46:133
196769986,2cyclictest743-21snmpd21:29:353
196699988,0cyclictest741-21lldpd23:39:162
196699987,1cyclictest743-21snmpd23:23:412
196699987,1cyclictest743-21snmpd21:38:042
196699987,1cyclictest743-21snmpd21:38:032
196699987,1cyclictest743-21snmpd21:23:002
196699987,1cyclictest743-21snmpd20:43:222
196699987,1cyclictest22800-21fschecks_count20:35:122
196699986,2cyclictest743-21snmpd20:05:332
196699986,2cyclictest743-21snmpd19:36:232
196699985,3cyclictest717-21ntpd22:25:102
196699984,3cyclictest717-21ntpd22:50:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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