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2026-05-01 - 05:04

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 Fri May 01, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12243992626,0cyclictest7960-21fwupd21:34:333
12232991818,0cyclictest65850irq/126-lan21:10:151
12232991818,0cyclictest65850irq/126-lan19:47:181
12232991817,1cyclictest65850irq/126-lan23:45:211
12232991817,1cyclictest65850irq/126-lan23:34:551
12232991817,1cyclictest65850irq/126-lan22:45:151
12232991817,1cyclictest65850irq/126-lan22:00:131
12232991817,1cyclictest65850irq/126-lan19:15:151
12232991817,1cyclictest65850irq/126-lan00:20:111
12232991816,2cyclictest65850irq/126-lan20:05:191
12220991818,0cyclictest743-21snmpd21:35:100
12232991717,0cyclictest65850irq/126-lan23:12:461
12232991717,0cyclictest65850irq/126-lan21:50:181
12232991716,1cyclictest65850irq/126-lan23:55:001
12232991716,1cyclictest65850irq/126-lan23:20:121
12232991716,1cyclictest65850irq/126-lan22:10:131
12232991716,1cyclictest65850irq/126-lan19:20:451
12232991715,1cyclictest65850irq/126-lan23:05:141
12220991717,0cyclictest743-21snmpd23:42:450
12220991717,0cyclictest743-21snmpd21:59:200
12220991717,0cyclictest743-21snmpd20:36:390
12220991717,0cyclictest743-21snmpd00:35:170
12220991717,0cyclictest743-21snmpd00:13:550
12220991717,0cyclictest15699-21cat19:15:140
12232991616,0cyclictest65850irq/126-lan22:35:151
12232991615,1cyclictest65850irq/126-lan21:55:171
12232991615,1cyclictest65850irq/126-lan00:30:161
12232991615,1cyclictest65850irq/126-lan00:00:171
12232991614,2cyclictest65850irq/126-lan22:40:141
12220991616,0cyclictest743-21snmpd23:26:320
12220991616,0cyclictest743-21snmpd22:44:520
12220991616,0cyclictest743-21snmpd22:30:400
12220991616,0cyclictest743-21snmpd22:01:450
12220991616,0cyclictest743-21snmpd21:45:080
12220991616,0cyclictest743-21snmpd21:15:490
12220991616,0cyclictest743-21snmpd21:10:400
12220991616,0cyclictest743-21snmpd20:18:310
12220991616,0cyclictest743-21snmpd19:23:390
12220991616,0cyclictest743-21snmpd00:09:460
12232991515,0cyclictest65850irq/126-lan23:56:461
12232991515,0cyclictest65850irq/126-lan23:00:131
12232991515,0cyclictest65850irq/126-lan22:50:461
12232991515,0cyclictest65850irq/126-lan22:30:221
12232991515,0cyclictest65850irq/126-lan21:20:141
12232991515,0cyclictest65850irq/126-lan20:57:461
12232991515,0cyclictest65850irq/126-lan19:25:121
12232991514,1cyclictest65850irq/126-lan21:37:261
12232991514,1cyclictest65850irq/126-lan21:07:461
12232991514,1cyclictest65850irq/126-lan20:40:111
12232991514,1cyclictest65850irq/126-lan20:25:151
12232991514,1cyclictest65850irq/126-lan20:10:161
12232991514,1cyclictest65850irq/126-lan20:00:211
12232991513,2cyclictest65850irq/126-lan21:34:551
12232991513,2cyclictest65850irq/126-lan21:00:161
12232991414,0cyclictest65850irq/126-lan23:40:171
12232991413,1cyclictest65850irq/126-lan23:39:001
12232991413,1cyclictest65850irq/126-lan22:25:201
12232991413,1cyclictest65850irq/126-lan22:15:211
12232991413,1cyclictest65850irq/126-lan21:45:141
12232991413,1cyclictest65850irq/126-lan19:10:141
12232991412,2cyclictest65850irq/126-lan22:05:161
12232991412,2cyclictest65850irq/126-lan21:25:191
12232991412,2cyclictest65850irq/126-lan20:15:101
12232991313,0cyclictest65850irq/126-lan20:50:151
12232991313,0cyclictest65850irq/126-lan20:23:461
12232991312,1cyclictest65850irq/126-lan21:15:201
12232991312,1cyclictest65850irq/126-lan20:36:461
12232991312,1cyclictest65850irq/126-lan19:35:111
12232991312,1cyclictest65850irq/126-lan19:30:201
12232991311,2cyclictest65850irq/126-lan23:17:431
12232991211,1cyclictest65850irq/126-lan20:45:141
12232991211,1cyclictest65850irq/126-lan19:55:161
12232991211,1cyclictest65850irq/126-lan00:10:141
1223299119,2cyclictest65850irq/126-lan00:25:161
12232991111,0cyclictest65850irq/126-lan20:30:151
12232991110,1cyclictest65850irq/126-lan22:20:201
12232991110,1cyclictest65850irq/126-lan19:50:161
1223299109,1cyclictest65850irq/126-lan22:55:461
1223299109,1cyclictest65850irq/126-lan21:40:181
1223299108,2cyclictest65850irq/126-lan23:25:111
12232991010,0cyclictest65850irq/126-lan19:42:461
122439998,1cyclictest743-21snmpd22:44:043
122439998,1cyclictest743-21snmpd22:10:093
122439998,1cyclictest743-21snmpd20:26:583
122439998,1cyclictest743-21snmpd19:25:053
122379999,0cyclictest743-21snmpd21:34:262
122379998,1cyclictest743-21snmpd22:46:042
122379998,1cyclictest743-21snmpd21:42:232
122379998,1cyclictest743-21snmpd00:39:172
122379998,1cyclictest741-21lldpd21:56:472
122329999,0cyclictest65850irq/126-lan00:37:521
122329998,1cyclictest65850irq/126-lan00:05:461
122329990,5cyclictest8089-21awk00:15:181
122439988,0cyclictest743-21snmpd22:46:223
122439988,0cyclictest743-21snmpd21:44:173
122439988,0cyclictest741-21lldpd23:37:063
122439988,0cyclictest741-21lldpd00:35:453
122439987,1cyclictest743-21snmpd21:25:043
122439987,1cyclictest743-21snmpd20:50:123
122439987,1cyclictest743-21snmpd20:49:213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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