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2026-05-26 - 22:39

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 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 Tue May 26, 2026 12:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1832992222,0cyclictest4314-21fwupd09:52:420
1840991918,1cyclictest65850irq/126-lan11:05:141
1840991918,1cyclictest65850irq/126-lan09:40:211
1840991818,0cyclictest743-21snmpd10:41:281
1840991818,0cyclictest743-21snmpd10:31:021
1840991818,0cyclictest65850irq/126-lan12:24:261
1840991818,0cyclictest65850irq/126-lan08:00:141
1840991817,1cyclictest65850irq/126-lan12:13:401
1840991817,1cyclictest65850irq/126-lan09:23:201
1840991717,0cyclictest743-21snmpd12:25:011
1840991717,0cyclictest743-21snmpd10:18:411
1840991717,0cyclictest743-21snmpd08:08:391
1840991717,0cyclictest65850irq/126-lan11:35:171
1840991717,0cyclictest65850irq/126-lan10:23:571
1840991717,0cyclictest65850irq/126-lan08:50:121
1840991717,0cyclictest65850irq/126-lan08:44:451
1840991717,0cyclictest25504-21cat09:25:141
1840991716,1cyclictest65850irq/126-lan11:55:121
1840991716,1cyclictest65850irq/126-lan11:20:181
1840991716,1cyclictest65850irq/126-lan10:45:191
1840991716,1cyclictest65850irq/126-lan07:40:181
1840991616,0cyclictest743-21snmpd12:34:261
1840991616,0cyclictest743-21snmpd11:45:061
1840991616,0cyclictest743-21snmpd11:33:051
1840991616,0cyclictest65850irq/126-lan11:40:141
1840991616,0cyclictest65850irq/126-lan10:55:001
1840991616,0cyclictest65850irq/126-lan10:03:261
1840991616,0cyclictest65850irq/126-lan09:37:011
1840991616,0cyclictest65850irq/126-lan09:00:151
1840991616,0cyclictest65850irq/126-lan08:30:201
1840991616,0cyclictest65850irq/126-lan08:25:161
1840991616,0cyclictest65850irq/126-lan07:37:361
1840991616,0cyclictest65850irq/126-lan07:20:211
1840991616,0cyclictest21115-21cat07:55:131
1840991616,0cyclictest10977-21cat07:30:151
1840991615,1cyclictest65850irq/126-lan07:45:231
1840991515,0cyclictest743-21snmpd08:16:301
1840991515,0cyclictest65850irq/126-lan11:25:181
1840991515,0cyclictest65850irq/126-lan11:15:231
1840991515,0cyclictest65850irq/126-lan09:55:121
1840991515,0cyclictest65850irq/126-lan09:50:101
1840991515,0cyclictest65850irq/126-lan09:30:111
1840991515,0cyclictest65850irq/126-lan09:10:161
1840991514,1cyclictest65850irq/126-lan12:35:141
1840991514,1cyclictest65850irq/126-lan12:00:151
1840991514,1cyclictest65850irq/126-lan11:50:121
1840991514,1cyclictest65850irq/126-lan10:05:131
1840991514,1cyclictest65850irq/126-lan09:15:181
1840991414,0cyclictest65850irq/126-lan12:15:171
1840991414,0cyclictest65850irq/126-lan11:03:261
1840991414,0cyclictest65850irq/126-lan10:36:281
1840991414,0cyclictest65850irq/126-lan10:25:161
1840991414,0cyclictest65850irq/126-lan08:55:191
1840991414,0cyclictest65850irq/126-lan08:10:181
1840991414,0cyclictest65850irq/126-lan07:10:181
1840991413,1cyclictest65850irq/126-lan10:58:341
1840991413,1cyclictest65850irq/126-lan08:35:161
1840991313,0cyclictest65850irq/126-lan07:28:271
1840991313,0cyclictest65850irq/126-lan07:15:121
1840991313,0cyclictest65850irq/126-lan07:15:111
1840991312,1cyclictest65850irq/126-lan09:45:101
1840991212,0cyclictest65850irq/126-lan11:10:191
1840991212,0cyclictest65850irq/126-lan08:20:181
1840991212,0cyclictest65850irq/126-lan07:50:171
1840991211,1cyclictest65850irq/126-lan10:10:171
1840991111,0cyclictest65850irq/126-lan12:06:081
1840991111,0cyclictest65850irq/126-lan09:05:121
1840991010,0cyclictest65850irq/126-lan08:45:201
18499998,1cyclictest743-21snmpd10:45:213
18499998,1cyclictest743-21snmpd10:13:533
18499998,1cyclictest743-21snmpd07:38:073
18499998,1cyclictest741-21lldpd08:35:483
18459998,1cyclictest743-21snmpd12:34:322
18459998,1cyclictest743-21snmpd08:53:552
18459998,1cyclictest12603-21grep10:10:212
18329998,1cyclictest743-21snmpd10:44:160
18329998,1cyclictest743-21snmpd07:44:400
18329997,0cyclictest191rcu_preempt07:20:010
18329997,0cyclictest191rcu_preempt07:20:000
18499988,0cyclictest743-21snmpd11:30:343
18499988,0cyclictest741-21lldpd11:08:403
18499988,0cyclictest741-21lldpd09:49:333
18499987,1cyclictest743-21snmpd11:26:023
18499987,1cyclictest741-21lldpd10:52:123
18499986,2cyclictest743-21snmpd12:12:013
18499986,2cyclictest743-21snmpd09:57:263
18499986,2cyclictest743-21snmpd09:19:143
18499986,2cyclictest25756-21cat12:05:153
18459988,0cyclictest743-21snmpd12:35:442
18459988,0cyclictest743-21snmpd08:37:302
18459988,0cyclictest743-21snmpd07:59:012
18459988,0cyclictest743-21snmpd07:10:302
18459988,0cyclictest741-21lldpd11:36:072
18459988,0cyclictest741-21lldpd08:21:042
18459988,0cyclictest522-21avahi-daemon11:21:472
18459987,1cyclictest743-21snmpd11:27:262
18459987,1cyclictest743-21snmpd10:26:152
18459987,1cyclictest743-21snmpd10:09:452
18459987,1cyclictest743-21snmpd09:23:412
18459987,1cyclictest743-21snmpd08:42:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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