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2025-09-17 - 05:39

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 Sep 17, 2025 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13171991919,0cyclictest66850irq/125-lan22:48:350
13171991918,1cyclictest66850irq/125-lan21:20:150
13171991918,1cyclictest66850irq/125-lan21:10:220
13171991818,0cyclictest66850irq/125-lan23:35:570
13171991818,0cyclictest66850irq/125-lan22:40:130
13171991818,0cyclictest66850irq/125-lan22:36:440
13171991818,0cyclictest66850irq/125-lan21:55:180
13171991818,0cyclictest66850irq/125-lan21:30:130
13171991818,0cyclictest66850irq/125-lan21:27:480
13171991818,0cyclictest66850irq/125-lan20:48:560
13171991818,0cyclictest66850irq/125-lan19:35:220
13171991817,1cyclictest66850irq/125-lan23:56:380
13171991817,1cyclictest66850irq/125-lan23:50:030
13171991817,1cyclictest66850irq/125-lan23:45:110
13171991817,1cyclictest66850irq/125-lan23:42:220
13171991817,1cyclictest66850irq/125-lan23:30:200
13171991817,1cyclictest66850irq/125-lan23:15:170
13171991817,1cyclictest66850irq/125-lan23:05:150
13171991817,1cyclictest66850irq/125-lan23:00:180
13171991817,1cyclictest66850irq/125-lan22:56:040
13171991817,1cyclictest66850irq/125-lan22:33:150
13171991817,1cyclictest66850irq/125-lan21:45:170
13171991817,1cyclictest66850irq/125-lan21:42:470
13171991817,1cyclictest66850irq/125-lan20:20:140
13171991817,1cyclictest66850irq/125-lan00:39:210
13171991817,1cyclictest66850irq/125-lan00:27:020
13171991817,1cyclictest66850irq/125-lan00:05:150
13171991717,0cyclictest66850irq/125-lan22:01:260
13171991717,0cyclictest66850irq/125-lan21:15:150
13171991717,0cyclictest66850irq/125-lan19:49:340
13171991717,0cyclictest66850irq/125-lan19:25:300
13171991717,0cyclictest66850irq/125-lan00:33:030
13171991717,0cyclictest66850irq/125-lan00:16:360
13171991716,1cyclictest66850irq/125-lan23:28:250
13171991716,1cyclictest66850irq/125-lan23:20:120
13171991716,1cyclictest66850irq/125-lan23:12:510
13171991716,1cyclictest66850irq/125-lan22:25:120
13171991716,1cyclictest66850irq/125-lan22:16:070
13171991716,1cyclictest66850irq/125-lan22:12:250
13171991716,1cyclictest66850irq/125-lan21:51:310
13171991716,1cyclictest66850irq/125-lan21:35:210
13171991716,1cyclictest66850irq/125-lan20:50:210
13171991716,1cyclictest66850irq/125-lan00:14:300
13171991616,0cyclictest66850irq/125-lan21:09:220
13171991616,0cyclictest66850irq/125-lan21:01:460
13171991616,0cyclictest66850irq/125-lan20:41:180
13171991616,0cyclictest66850irq/125-lan20:41:170
13171991616,0cyclictest66850irq/125-lan20:25:230
13171991616,0cyclictest66850irq/125-lan20:10:270
13171991616,0cyclictest66850irq/125-lan19:55:160
13171991616,0cyclictest66850irq/125-lan19:50:020
13171991616,0cyclictest66850irq/125-lan19:15:210
13171991615,1cyclictest66850irq/125-lan22:50:150
13171991615,1cyclictest66850irq/125-lan22:20:170
13171991615,1cyclictest66850irq/125-lan00:21:580
13171991615,1cyclictest66850irq/125-lan00:00:230
13171991515,0cyclictest66850irq/125-lan22:05:160
13171991514,1cyclictest66850irq/125-lan20:35:110
13171991514,1cyclictest66850irq/125-lan19:40:250
13171991514,1cyclictest66850irq/125-lan19:10:160
13171991414,0cyclictest66850irq/125-lan20:55:160
13171991414,0cyclictest66850irq/125-lan19:20:130
13171991212,0cyclictest66850irq/125-lan20:16:450
13171991212,0cyclictest66850irq/125-lan19:32:450
13171991211,1cyclictest66850irq/125-lan20:05:150
1317999117,3cyclictest14193-21open_inodes21:25:232
13171991111,0cyclictest66850irq/125-lan20:00:210
13171991110,1cyclictest66850irq/125-lan20:30:460
131829998,1cyclictest771-21snmpd21:59:503
131829998,1cyclictest771-21snmpd21:05:433
131829998,1cyclictest771-21snmpd20:56:153
131799998,1cyclictest771-21snmpd23:17:342
131759998,1cyclictest769-21lldpd20:52:251
131759998,1cyclictest524-21avahi-daemon21:41:261
131759998,1cyclictest28005-21cut21:40:001
131829988,0cyclictest771-21snmpd22:59:283
131829988,0cyclictest771-21snmpd00:17:423
131829988,0cyclictest771-21snmpd00:14:273
131829988,0cyclictest769-21lldpd22:12:443
131829988,0cyclictest769-21lldpd19:53:243
131829988,0cyclictest769-21lldpd19:11:553
131829987,1cyclictest771-21snmpd21:29:523
131829987,1cyclictest771-21snmpd20:02:113
131829987,1cyclictest524-21avahi-daemon22:34:393
131829986,2cyclictest771-21snmpd20:46:293
131829986,2cyclictest771-21snmpd20:08:463
131829986,2cyclictest771-21snmpd19:49:183
131799988,0cyclictest771-21snmpd22:53:022
131799988,0cyclictest771-21snmpd21:46:532
131799988,0cyclictest769-21lldpd23:47:052
131799988,0cyclictest769-21lldpd23:22:502
131799988,0cyclictest769-21lldpd22:57:452
131799987,1cyclictest25596-21fschecks_time22:10:102
131799987,0cyclictest191rcu_preempt20:45:162
131799986,2cyclictest8052-21cat20:15:172
131799986,2cyclictest771-21snmpd22:29:302
131799986,2cyclictest771-21snmpd19:48:102
131799986,2cyclictest771-21snmpd19:42:162
131799986,2cyclictest749-21ntpd23:41:022
131799986,2cyclictest749-21ntpd00:18:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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