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2025-11-20 - 18:58

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 Nov 20, 2025 12:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5991993838,0cyclictest1180-21fwupd11:44:051
5999992018,2cyclictest66850irq/125-lan10:22:293
5999991919,0cyclictest66850irq/125-lan12:00:213
5999991918,1cyclictest66850irq/125-lan12:10:273
5999991918,1cyclictest66850irq/125-lan11:05:363
5999991918,1cyclictest66850irq/125-lan10:36:473
5999991918,1cyclictest66850irq/125-lan10:02:533
5999991918,1cyclictest66850irq/125-lan09:55:203
5999991918,1cyclictest66850irq/125-lan09:23:513
5999991917,2cyclictest66850irq/125-lan12:30:153
5999991917,2cyclictest66850irq/125-lan12:08:133
5999991917,2cyclictest66850irq/125-lan11:04:073
5999991917,2cyclictest66850irq/125-lan10:28:353
5999991916,3cyclictest66850irq/125-lan10:05:153
5999991818,0cyclictest66850irq/125-lan11:54:003
5999991818,0cyclictest66850irq/125-lan10:57:063
5999991818,0cyclictest66850irq/125-lan09:47:153
5999991817,1cyclictest66850irq/125-lan12:35:153
5999991817,1cyclictest66850irq/125-lan11:35:433
5999991817,1cyclictest66850irq/125-lan09:44:223
5999991817,1cyclictest66850irq/125-lan08:15:363
5999991817,1cyclictest66850irq/125-lan07:25:153
5999991816,2cyclictest66850irq/125-lan11:56:323
5999991816,2cyclictest66850irq/125-lan11:25:073
5999991816,2cyclictest66850irq/125-lan11:20:193
5999991816,2cyclictest66850irq/125-lan09:19:033
5999991816,2cyclictest66850irq/125-lan09:10:313
5999991815,3cyclictest66850irq/125-lan10:15:183
5999991717,0cyclictest66850irq/125-lan12:15:143
5999991716,1cyclictest66850irq/125-lan11:45:173
5999991716,1cyclictest66850irq/125-lan11:15:123
5999991716,1cyclictest66850irq/125-lan10:40:003
5999991716,1cyclictest66850irq/125-lan10:31:293
5999991716,1cyclictest66850irq/125-lan09:39:503
5999991716,1cyclictest66850irq/125-lan09:25:043
5999991716,1cyclictest66850irq/125-lan08:05:213
5999991715,2cyclictest66850irq/125-lan12:20:113
5999991715,2cyclictest66850irq/125-lan11:30:163
5999991715,2cyclictest66850irq/125-lan10:53:533
5999991715,2cyclictest66850irq/125-lan10:10:423
5999991715,2cyclictest66850irq/125-lan08:45:193
5999991715,2cyclictest66850irq/125-lan08:20:213
5999991714,3cyclictest66850irq/125-lan12:27:183
5999991714,3cyclictest66850irq/125-lan11:10:103
5996991717,0cyclictest771-21snmpd12:21:192
5996991717,0cyclictest771-21snmpd11:25:532
5996991717,0cyclictest771-21snmpd10:54:492
5996991717,0cyclictest771-21snmpd09:51:132
5996991717,0cyclictest771-21snmpd08:30:212
5996991717,0cyclictest771-21snmpd08:22:412
5996991717,0cyclictest771-21snmpd07:57:042
5996991717,0cyclictest771-21snmpd07:31:482
5996991717,0cyclictest12303-21cat11:55:132
5999991616,0cyclictest66850irq/125-lan09:07:393
5999991616,0cyclictest66850irq/125-lan07:30:173
5999991616,0cyclictest66850irq/125-lan07:20:203
5999991615,1cyclictest66850irq/125-lan11:40:203
5999991615,1cyclictest66850irq/125-lan10:45:133
5999991615,1cyclictest66850irq/125-lan09:30:093
5999991615,1cyclictest66850irq/125-lan09:00:203
5999991615,1cyclictest66850irq/125-lan08:25:113
5999991615,1cyclictest66850irq/125-lan08:10:163
5999991615,1cyclictest66850irq/125-lan08:00:113
5999991615,1cyclictest66850irq/125-lan07:55:133
5999991615,1cyclictest66850irq/125-lan07:40:173
5999991615,1cyclictest66850irq/125-lan07:13:323
5996991616,0cyclictest771-21snmpd12:03:542
5996991616,0cyclictest771-21snmpd07:43:102
5996991616,0cyclictest32077-21cat09:20:122
5996991616,0cyclictest17222-21cat10:15:142
5999991514,1cyclictest66850irq/125-lan09:50:473
5999991514,1cyclictest66850irq/125-lan08:30:093
5999991514,1cyclictest66850irq/125-lan07:15:173
5999991513,2cyclictest66850irq/125-lan08:35:173
5999991512,3cyclictest66850irq/125-lan07:45:143
5996991414,0cyclictest771-21snmpd11:13:292
5999991312,1cyclictest66850irq/125-lan08:59:373
5999991312,1cyclictest66850irq/125-lan08:43:423
5999991312,1cyclictest66850irq/125-lan07:36:363
5996991313,0cyclictest771-21snmpd09:27:282
5999991111,0cyclictest66850irq/125-lan08:50:133
59969998,1cyclictest771-21snmpd11:37:002
59969998,1cyclictest771-21snmpd10:24:322
59969998,1cyclictest771-21snmpd08:47:032
59919998,1cyclictest771-21snmpd12:15:101
59919998,1cyclictest771-21snmpd09:17:461
59919998,1cyclictest2949-21cut09:25:001
59879998,1cyclictest524-21avahi-daemon12:15:510
59999986,2cyclictest749-21ntpd07:50:293
59969988,0cyclictest771-21snmpd11:15:052
59969988,0cyclictest769-21lldpd11:41:122
59969988,0cyclictest769-21lldpd10:42:012
59969988,0cyclictest769-21lldpd09:01:552
59969987,1cyclictest771-21snmpd07:53:462
59969987,1cyclictest524-21avahi-daemon12:12:372
59969987,1cyclictest524-21avahi-daemon12:07:072
59969987,1cyclictest524-21avahi-daemon10:59:382
59969986,2cyclictest771-21snmpd08:52:302
59969986,2cyclictest749-21ntpd12:37:562
59969986,2cyclictest749-21ntpd12:30:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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