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2026-03-22 - 21:32

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 Mar 22, 2026 12:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24193991919,0cyclictest743-21snmpd11:48:092
24189991918,1cyclictest65850irq/126-lan12:04:421
24193991818,0cyclictest743-21snmpd12:21:382
24193991818,0cyclictest743-21snmpd12:18:222
24193991818,0cyclictest743-21snmpd12:02:312
24193991818,0cyclictest743-21snmpd11:57:402
24193991818,0cyclictest743-21snmpd11:52:572
24193991818,0cyclictest743-21snmpd09:58:512
24193991818,0cyclictest743-21snmpd09:31:112
24193991818,0cyclictest743-21snmpd08:58:272
24193991818,0cyclictest743-21snmpd08:52:152
24193991818,0cyclictest743-21snmpd07:57:392
24193991818,0cyclictest11361-21cat09:15:132
24189991818,0cyclictest65850irq/126-lan11:40:171
24189991818,0cyclictest65850irq/126-lan09:03:581
24189991817,1cyclictest65850irq/126-lan09:15:111
24193991717,0cyclictest743-21snmpd11:44:242
24193991717,0cyclictest743-21snmpd11:09:472
24193991717,0cyclictest743-21snmpd10:55:582
24193991717,0cyclictest743-21snmpd10:19:102
24193991717,0cyclictest743-21snmpd08:49:392
24193991717,0cyclictest743-21snmpd08:04:472
24193991717,0cyclictest743-21snmpd07:32:092
24189991717,0cyclictest65850irq/126-lan10:07:201
24189991717,0cyclictest65850irq/126-lan09:45:181
24189991717,0cyclictest65850irq/126-lan07:35:181
24189991716,1cyclictest65850irq/126-lan10:45:191
24189991716,1cyclictest65850irq/126-lan10:35:131
24189991716,1cyclictest65850irq/126-lan10:25:031
24189991716,1cyclictest65850irq/126-lan09:25:191
24189991716,1cyclictest65850irq/126-lan09:05:201
24189991716,1cyclictest65850irq/126-lan07:55:131
24189991716,1cyclictest65850irq/126-lan07:15:141
24189991616,0cyclictest65850irq/126-lan12:09:161
24189991616,0cyclictest65850irq/126-lan09:52:331
24189991616,0cyclictest65850irq/126-lan08:17:251
24189991616,0cyclictest65850irq/126-lan07:45:381
24189991616,0cyclictest65850irq/126-lan07:45:371
24189991615,1cyclictest65850irq/126-lan12:25:131
24189991615,1cyclictest65850irq/126-lan12:20:201
24189991615,1cyclictest65850irq/126-lan11:55:121
24189991615,1cyclictest65850irq/126-lan10:40:211
24189991615,1cyclictest65850irq/126-lan10:30:201
24189991615,1cyclictest65850irq/126-lan08:32:361
24189991615,1cyclictest65850irq/126-lan08:25:161
24189991615,1cyclictest65850irq/126-lan07:40:211
24189991615,1cyclictest65850irq/126-lan07:30:141
24189991515,0cyclictest65850irq/126-lan12:35:141
24189991515,0cyclictest65850irq/126-lan11:19:201
24189991515,0cyclictest65850irq/126-lan11:05:121
24189991515,0cyclictest65850irq/126-lan08:38:561
24189991515,0cyclictest65850irq/126-lan08:20:131
24189991514,1cyclictest65850irq/126-lan11:35:151
24189991514,1cyclictest65850irq/126-lan10:18:561
24189991514,1cyclictest65850irq/126-lan09:55:111
24189991514,1cyclictest65850irq/126-lan09:10:171
24189991414,0cyclictest65850irq/126-lan11:32:551
24189991414,0cyclictest65850irq/126-lan11:20:141
24189991414,0cyclictest65850irq/126-lan11:00:001
24189991414,0cyclictest65850irq/126-lan10:50:561
24189991413,1cyclictest65850irq/126-lan11:53:571
24189991413,1cyclictest65850irq/126-lan10:14:151
24189991313,0cyclictest65850irq/126-lan10:55:191
24189991313,0cyclictest65850irq/126-lan09:30:111
24189991313,0cyclictest65850irq/126-lan08:55:161
24189991313,0cyclictest65850irq/126-lan08:40:171
24189991313,0cyclictest65850irq/126-lan08:06:561
24189991313,0cyclictest65850irq/126-lan08:00:561
24189991312,1cyclictest65850irq/126-lan12:10:161
24189991312,1cyclictest65850irq/126-lan09:40:201
24189991312,1cyclictest65850irq/126-lan09:20:561
24189991312,1cyclictest65850irq/126-lan07:20:201
24189991312,1cyclictest65850irq/126-lan07:10:231
24189991212,0cyclictest65850irq/126-lan12:31:551
24189991212,0cyclictest65850irq/126-lan11:12:411
24189991212,0cyclictest65850irq/126-lan08:48:561
24189991211,1cyclictest65850irq/126-lan09:35:131
24189991211,1cyclictest65850irq/126-lan08:10:111
24189991111,0cyclictest65850irq/126-lan11:25:171
2418999109,1cyclictest65850irq/126-lan11:45:121
24189991010,0cyclictest65850irq/126-lan08:53:571
241969998,1cyclictest743-21snmpd11:18:183
241969998,1cyclictest743-21snmpd07:35:463
241899998,1cyclictest65850irq/126-lan12:19:561
241899998,1cyclictest65850irq/126-lan10:20:121
241899998,1cyclictest65850irq/126-lan07:25:161
241849998,1cyclictest743-21snmpd09:31:470
241849998,1cyclictest743-21snmpd08:11:230
241969988,0cyclictest743-21snmpd11:45:273
241969988,0cyclictest743-21snmpd09:29:103
241969988,0cyclictest743-21snmpd08:38:243
241969988,0cyclictest743-21snmpd08:27:193
241969988,0cyclictest743-21snmpd07:49:133
241969988,0cyclictest743-21snmpd07:49:133
241969988,0cyclictest741-21lldpd10:46:153
241969988,0cyclictest24603-21fschecks_time07:10:143
241969987,1cyclictest743-21snmpd08:20:023
241969987,1cyclictest741-21lldpd12:27:493
241969987,1cyclictest741-21lldpd09:57:443
241969987,1cyclictest741-21lldpd09:39:463
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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