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2026-01-11 - 18:23

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 Jan 11, 2026 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5351994241,1cyclictest19911-21fwupd10:22:112
5340992020,0cyclictest65850irq/126-lan10:50:190
5340991918,1cyclictest65850irq/126-lan12:20:110
5356991818,0cyclictest743-21snmpd11:55:413
5356991818,0cyclictest743-21snmpd11:46:023
5356991818,0cyclictest743-21snmpd10:24:393
5356991818,0cyclictest743-21snmpd09:50:493
5356991818,0cyclictest743-21snmpd08:06:553
5356991818,0cyclictest743-21snmpd07:48:183
5356991818,0cyclictest22166-21cat07:50:143
5356991818,0cyclictest15136-21cat11:30:123
5340991818,0cyclictest743-21snmpd11:09:580
5340991818,0cyclictest743-21snmpd10:14:050
5340991818,0cyclictest743-21snmpd08:45:110
5340991818,0cyclictest743-21snmpd08:29:170
5340991818,0cyclictest65850irq/126-lan11:50:450
5340991818,0cyclictest65850irq/126-lan11:33:410
5340991818,0cyclictest65850irq/126-lan09:15:220
5340991818,0cyclictest65850irq/126-lan08:40:170
5356991717,0cyclictest743-21snmpd08:14:103
5340991717,0cyclictest743-21snmpd07:21:270
5340991717,0cyclictest65850irq/126-lan12:05:170
5340991717,0cyclictest65850irq/126-lan09:53:530
5340991717,0cyclictest65850irq/126-lan09:31:270
5340991717,0cyclictest65850irq/126-lan09:20:170
5340991717,0cyclictest65850irq/126-lan08:50:110
5340991717,0cyclictest65850irq/126-lan08:36:330
5340991717,0cyclictest65850irq/126-lan08:10:120
5340991717,0cyclictest65850irq/126-lan07:15:150
5340991716,1cyclictest65850irq/126-lan10:47:450
5340991716,1cyclictest65850irq/126-lan07:41:510
5340991716,1cyclictest65850irq/126-lan07:34:170
5356991616,0cyclictest743-21snmpd08:59:573
5340991616,0cyclictest65850irq/126-lan12:25:300
5340991616,0cyclictest65850irq/126-lan11:45:270
5340991616,0cyclictest65850irq/126-lan11:14:450
5340991616,0cyclictest65850irq/126-lan11:00:220
5340991616,0cyclictest65850irq/126-lan10:05:180
5340991616,0cyclictest65850irq/126-lan09:55:180
5340991616,0cyclictest65850irq/126-lan08:08:260
5340991615,1cyclictest65850irq/126-lan12:30:140
5340991615,1cyclictest65850irq/126-lan12:00:150
5340991615,1cyclictest65850irq/126-lan11:20:000
5340991615,1cyclictest65850irq/126-lan10:25:130
5340991615,1cyclictest65850irq/126-lan08:15:220
5356991515,0cyclictest743-21snmpd08:34:533
5340991515,0cyclictest65850irq/126-lan11:40:300
5340991515,0cyclictest65850irq/126-lan11:35:120
5340991515,0cyclictest65850irq/126-lan10:39:450
5340991515,0cyclictest65850irq/126-lan10:17:010
5340991515,0cyclictest65850irq/126-lan09:25:190
5340991515,0cyclictest65850irq/126-lan09:00:180
5340991515,0cyclictest65850irq/126-lan07:59:560
5340991515,0cyclictest65850irq/126-lan07:50:120
5340991514,1cyclictest65850irq/126-lan12:10:150
5340991514,1cyclictest65850irq/126-lan11:24:430
5340991514,1cyclictest65850irq/126-lan10:22:020
5340991514,1cyclictest65850irq/126-lan08:20:230
5340991514,1cyclictest65850irq/126-lan07:35:230
5340991414,0cyclictest65850irq/126-lan11:55:220
5340991414,0cyclictest65850irq/126-lan10:55:130
5340991414,0cyclictest65850irq/126-lan10:30:190
5340991414,0cyclictest65850irq/126-lan09:45:170
5340991414,0cyclictest65850irq/126-lan08:30:060
5340991414,0cyclictest65850irq/126-lan08:00:130
5340991414,0cyclictest65850irq/126-lan07:49:390
5340991414,0cyclictest65850irq/126-lan07:25:120
5340991313,0cyclictest65850irq/126-lan12:39:460
5340991313,0cyclictest65850irq/126-lan10:40:110
5340991313,0cyclictest65850irq/126-lan09:10:270
5340991313,0cyclictest65850irq/126-lan08:55:200
5340991212,0cyclictest65850irq/126-lan12:19:480
5340991212,0cyclictest65850irq/126-lan09:35:120
5340991212,0cyclictest65850irq/126-lan09:05:140
5340991212,0cyclictest65850irq/126-lan07:10:200
5340991111,0cyclictest65850irq/126-lan09:40:110
5340991010,0cyclictest65850irq/126-lan11:25:120
53569998,1cyclictest743-21snmpd09:33:073
53569998,1cyclictest743-21snmpd07:22:513
53569998,1cyclictest741-21lldpd08:21:493
53519998,1cyclictest743-21snmpd08:53:292
53519997,1cyclictest743-21snmpd09:56:082
53459998,1cyclictest743-21snmpd12:37:371
53459998,1cyclictest743-21snmpd09:17:481
53459998,1cyclictest743-21snmpd08:46:231
53459998,1cyclictest741-21lldpd11:55:461
53459998,1cyclictest506-21systemd-resolve08:50:121
53459996,3cyclictest717-21ntpd12:00:441
53459995,3cyclictest717-21ntpd08:32:291
53569988,0cyclictest743-21snmpd10:15:053
53569988,0cyclictest743-21snmpd09:42:283
53569988,0cyclictest741-21lldpd11:10:173
53569988,0cyclictest741-21lldpd08:49:413
53569987,1cyclictest741-21lldpd09:00:233
53569987,1cyclictest26289-21cpuspeed_turbos08:00:133
53519988,0cyclictest743-21snmpd08:24:262
53519988,0cyclictest741-21lldpd09:43:382
53519988,0cyclictest741-21lldpd08:49:072
53519986,2cyclictest743-21snmpd10:52:062
53519986,2cyclictest743-21snmpd10:37:512
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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