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2025-11-23 - 18:34

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 Nov 23, 2025 12:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18814994040,0cyclictest24494-21fwupd07:21:191
18821991918,1cyclictest66850irq/125-lan11:50:233
18821991918,1cyclictest66850irq/125-lan09:50:193
18821991918,1cyclictest66850irq/125-lan09:20:173
18821991918,1cyclictest66850irq/125-lan07:24:373
18821991818,0cyclictest66850irq/125-lan11:39:123
18821991818,0cyclictest66850irq/125-lan10:35:193
18821991818,0cyclictest66850irq/125-lan09:40:163
18821991817,1cyclictest66850irq/125-lan12:32:093
18821991817,1cyclictest66850irq/125-lan12:22:583
18821991817,1cyclictest66850irq/125-lan12:11:323
18821991817,1cyclictest66850irq/125-lan12:06:493
18821991817,1cyclictest66850irq/125-lan11:44:223
18821991817,1cyclictest66850irq/125-lan11:25:123
18821991817,1cyclictest66850irq/125-lan11:00:043
18821991817,1cyclictest66850irq/125-lan10:45:263
18821991817,1cyclictest66850irq/125-lan10:43:343
18821991817,1cyclictest66850irq/125-lan10:31:013
18821991817,1cyclictest66850irq/125-lan10:21:263
18821991817,1cyclictest66850irq/125-lan10:15:203
18821991817,1cyclictest66850irq/125-lan10:13:053
18821991817,1cyclictest66850irq/125-lan09:57:573
18821991817,1cyclictest66850irq/125-lan09:17:333
18821991817,1cyclictest66850irq/125-lan07:40:003
18821991717,0cyclictest66850irq/125-lan11:06:213
18821991717,0cyclictest66850irq/125-lan10:25:203
18821991717,0cyclictest66850irq/125-lan10:05:133
18821991717,0cyclictest66850irq/125-lan09:25:213
18821991717,0cyclictest66850irq/125-lan08:55:143
18821991716,1cyclictest66850irq/125-lan12:25:243
18821991716,1cyclictest66850irq/125-lan12:18:463
18821991716,1cyclictest66850irq/125-lan11:55:473
18821991716,1cyclictest66850irq/125-lan11:10:313
18821991716,1cyclictest66850irq/125-lan09:46:213
18821991716,1cyclictest66850irq/125-lan09:35:323
18821991716,1cyclictest66850irq/125-lan09:10:343
18821991616,0cyclictest66850irq/125-lan12:38:353
18821991616,0cyclictest66850irq/125-lan11:34:553
18821991616,0cyclictest66850irq/125-lan10:51:193
18821991615,1cyclictest66850irq/125-lan11:45:123
18821991615,1cyclictest66850irq/125-lan11:21:293
18821991615,1cyclictest66850irq/125-lan10:55:143
18821991615,1cyclictest66850irq/125-lan10:01:393
18821991615,1cyclictest66850irq/125-lan09:34:183
18821991615,1cyclictest66850irq/125-lan08:20:173
18821991615,1cyclictest66850irq/125-lan08:00:173
18821991615,1cyclictest66850irq/125-lan07:50:163
18821991615,1cyclictest66850irq/125-lan07:45:193
18821991615,1cyclictest66850irq/125-lan07:25:153
18821991515,0cyclictest66850irq/125-lan07:30:303
18821991515,0cyclictest66850irq/125-lan07:19:003
18821991514,1cyclictest66850irq/125-lan12:00:173
18821991514,1cyclictest66850irq/125-lan11:17:113
18821991514,1cyclictest66850irq/125-lan08:50:173
18821991414,0cyclictest66850irq/125-lan08:25:163
18821991414,0cyclictest66850irq/125-lan07:10:143
18821991413,1cyclictest66850irq/125-lan07:40:243
18821991313,0cyclictest66850irq/125-lan09:05:173
18821991313,0cyclictest66850irq/125-lan08:35:123
18821991313,0cyclictest66850irq/125-lan08:05:173
18821991211,1cyclictest66850irq/125-lan08:59:593
18821991211,1cyclictest66850irq/125-lan08:18:373
18821991211,1cyclictest66850irq/125-lan07:55:173
18821991111,0cyclictest66850irq/125-lan08:10:213
18821991010,0cyclictest66850irq/125-lan08:30:173
188219999,0cyclictest66850irq/125-lan08:49:173
188189994,5cyclictest550-21NetworkManager08:55:182
188149998,1cyclictest771-21snmpd09:38:001
188149998,1cyclictest771-21snmpd09:01:381
188099998,1cyclictest771-21snmpd12:09:310
188099998,1cyclictest517-21systemd-resolve09:22:030
188099998,1cyclictest255-20systemd-journal10:53:410
188219987,1cyclictest66850irq/125-lan08:40:173
188189988,0cyclictest771-21snmpd10:44:182
188189988,0cyclictest771-21snmpd09:14:542
188189988,0cyclictest771-21snmpd07:55:212
188189988,0cyclictest769-21lldpd10:48:212
188189988,0cyclictest769-21lldpd07:53:482
188189988,0cyclictest769-21lldpd07:26:582
188189987,1cyclictest771-21snmpd10:22:532
188189987,1cyclictest524-21avahi-daemon09:16:072
188189986,2cyclictest771-21snmpd12:15:032
188189986,2cyclictest771-21snmpd11:25:252
188189986,2cyclictest771-21snmpd08:45:522
188189986,2cyclictest771-21snmpd07:20:382
188149988,0cyclictest771-21snmpd12:06:351
188149988,0cyclictest771-21snmpd10:25:081
188149988,0cyclictest771-21snmpd08:59:561
188149988,0cyclictest771-21snmpd08:52:441
188149988,0cyclictest771-21snmpd08:30:091
188149988,0cyclictest771-21snmpd08:27:521
188149988,0cyclictest769-21lldpd11:36:591
188149988,0cyclictest769-21lldpd08:39:551
188149988,0cyclictest517-21systemd-resolve11:28:121
188149987,1cyclictest771-21snmpd09:17:301
188149987,1cyclictest771-21snmpd08:42:051
188149987,1cyclictest769-21lldpd12:17:481
188149987,1cyclictest524-21avahi-daemon11:12:101
188149987,1cyclictest524-21avahi-daemon08:45:201
188149986,2cyclictest771-21snmpd12:35:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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