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2026-04-10 - 00:26

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 Thu Apr 09, 2026 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7997991918,1cyclictest65850irq/126-lan11:35:203
7997991918,1cyclictest65850irq/126-lan08:40:193
7997991817,1cyclictest65850irq/126-lan11:00:193
7997991817,1cyclictest65850irq/126-lan10:20:003
7997991817,1cyclictest65850irq/126-lan09:55:133
7997991817,1cyclictest65850irq/126-lan07:20:143
7997991717,0cyclictest65850irq/126-lan10:40:123
7997991717,0cyclictest65850irq/126-lan07:35:173
7997991716,1cyclictest65850irq/126-lan10:55:133
7997991716,1cyclictest65850irq/126-lan10:25:213
7997991716,1cyclictest65850irq/126-lan09:19:463
7997991716,1cyclictest65850irq/126-lan08:45:113
7997991716,1cyclictest65850irq/126-lan08:30:103
7997991716,1cyclictest65850irq/126-lan08:05:153
7997991616,0cyclictest65850irq/126-lan12:25:183
7997991616,0cyclictest65850irq/126-lan10:05:183
7997991616,0cyclictest65850irq/126-lan08:37:353
7997991616,0cyclictest65850irq/126-lan08:28:473
7997991616,0cyclictest65850irq/126-lan08:23:153
7997991615,1cyclictest65850irq/126-lan12:05:153
7997991615,1cyclictest65850irq/126-lan10:00:143
7997991615,1cyclictest65850irq/126-lan09:40:143
7997991615,1cyclictest65850irq/126-lan07:50:133
7997991615,1cyclictest65850irq/126-lan07:30:123
7980991616,0cyclictest743-21snmpd12:21:180
7980991616,0cyclictest743-21snmpd11:53:250
7980991616,0cyclictest743-21snmpd11:27:090
7980991616,0cyclictest743-21snmpd11:06:090
7980991616,0cyclictest743-21snmpd10:03:450
7980991616,0cyclictest743-21snmpd08:49:520
7980991616,0cyclictest743-21snmpd07:52:420
7980991616,0cyclictest743-21snmpd07:24:220
7980991616,0cyclictest30110-21cat10:40:140
7997991515,0cyclictest65850irq/126-lan12:22:493
7997991515,0cyclictest65850irq/126-lan12:04:083
7997991515,0cyclictest65850irq/126-lan11:32:093
7997991515,0cyclictest65850irq/126-lan11:22:473
7997991515,0cyclictest65850irq/126-lan09:20:173
7997991515,0cyclictest65850irq/126-lan09:13:473
7997991515,0cyclictest65850irq/126-lan08:50:163
7997991515,0cyclictest65850irq/126-lan08:10:223
7997991515,0cyclictest65850irq/126-lan07:40:223
7997991514,1cyclictest65850irq/126-lan12:30:143
7997991514,1cyclictest65850irq/126-lan10:35:143
7997991514,1cyclictest65850irq/126-lan10:15:183
7997991514,1cyclictest65850irq/126-lan09:00:123
7997991514,1cyclictest65850irq/126-lan08:55:143
7997991514,1cyclictest65850irq/126-lan08:15:173
7980991515,0cyclictest743-21snmpd12:39:040
7980991515,0cyclictest743-21snmpd12:27:540
7980991515,0cyclictest743-21snmpd11:55:520
7980991515,0cyclictest743-21snmpd11:47:530
7980991515,0cyclictest743-21snmpd11:13:540
7980991515,0cyclictest743-21snmpd10:50:050
7980991515,0cyclictest743-21snmpd09:59:340
7980991515,0cyclictest743-21snmpd08:55:370
7980991515,0cyclictest743-21snmpd08:29:240
7980991515,0cyclictest743-21snmpd07:45:350
7980991515,0cyclictest17544-21cat10:10:140
7997991414,0cyclictest65850irq/126-lan12:35:453
7997991414,0cyclictest65850irq/126-lan11:55:113
7997991414,0cyclictest65850irq/126-lan11:25:143
7997991414,0cyclictest65850irq/126-lan10:30:123
7997991413,1cyclictest65850irq/126-lan11:50:153
7997991413,1cyclictest65850irq/126-lan11:10:143
7997991413,1cyclictest65850irq/126-lan09:45:153
7997991413,1cyclictest65850irq/126-lan09:30:183
7997991413,1cyclictest65850irq/126-lan08:00:143
7997991413,1cyclictest65850irq/126-lan07:45:213
7997991413,1cyclictest65850irq/126-lan07:25:133
7997991413,1cyclictest65850irq/126-lan07:25:133
7980991414,0cyclictest743-21snmpd12:17:330
7980991414,0cyclictest743-21snmpd12:13:590
7980991414,0cyclictest743-21snmpd12:08:120
7980991414,0cyclictest743-21snmpd10:56:320
7980991414,0cyclictest743-21snmpd10:48:420
7980991414,0cyclictest743-21snmpd10:28:110
7980991414,0cyclictest743-21snmpd10:18:340
7980991414,0cyclictest743-21snmpd08:53:520
7980991414,0cyclictest743-21snmpd08:14:210
7980991414,0cyclictest743-21snmpd07:55:020
7980991414,0cyclictest16706-21cat07:30:130
7980991414,0cyclictest13521-21cat08:40:130
7997991313,0cyclictest65850irq/126-lan11:40:153
7997991313,0cyclictest65850irq/126-lan10:45:123
7997991312,1cyclictest65850irq/126-lan08:00:003
7997991312,1cyclictest65850irq/126-lan07:15:203
7997991312,1cyclictest65850irq/126-lan07:10:163
7997991212,0cyclictest65850irq/126-lan12:12:493
7997991212,0cyclictest65850irq/126-lan09:28:473
7997991212,0cyclictest65850irq/126-lan09:05:143
7997991211,1cyclictest65850irq/126-lan11:45:133
7997991211,1cyclictest65850irq/126-lan09:35:183
7997991111,0cyclictest65850irq/126-lan11:05:143
7980991111,0cyclictest743-21snmpd09:26:300
799799109,1cyclictest65850irq/126-lan12:15:013
799799109,1cyclictest65850irq/126-lan10:10:143
7997991010,0cyclictest65850irq/126-lan11:16:013
79979998,1cyclictest65850irq/126-lan09:50:103
79939998,1cyclictest741-21lldpd09:19:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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