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2025-11-30 - 16:16

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 30, 2025 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27954993333,0cyclictest3952-21fwupd07:29:390
27958991918,1cyclictest66850irq/125-lan12:14:321
27958991918,1cyclictest66850irq/125-lan11:30:111
27958991918,1cyclictest66850irq/125-lan09:58:491
27958991918,1cyclictest66850irq/125-lan09:25:131
27958991918,1cyclictest66850irq/125-lan09:22:241
27958991918,1cyclictest66850irq/125-lan09:17:201
27958991918,1cyclictest66850irq/125-lan07:40:211
27958991818,0cyclictest66850irq/125-lan12:01:391
27958991818,0cyclictest66850irq/125-lan11:06:421
27958991818,0cyclictest66850irq/125-lan09:36:131
27958991817,1cyclictest66850irq/125-lan12:25:231
27958991817,1cyclictest66850irq/125-lan12:25:231
27958991817,1cyclictest66850irq/125-lan12:15:191
27958991817,1cyclictest66850irq/125-lan11:55:001
27958991817,1cyclictest66850irq/125-lan11:40:511
27958991817,1cyclictest66850irq/125-lan11:20:561
27958991817,1cyclictest66850irq/125-lan11:11:431
27958991817,1cyclictest66850irq/125-lan10:56:221
27958991817,1cyclictest66850irq/125-lan10:48:201
27958991817,1cyclictest66850irq/125-lan10:10:271
27958991817,1cyclictest66850irq/125-lan08:48:241
27958991717,0cyclictest66850irq/125-lan10:35:271
27958991717,0cyclictest66850irq/125-lan10:30:001
27958991717,0cyclictest66850irq/125-lan10:21:591
27958991717,0cyclictest66850irq/125-lan10:15:121
27958991717,0cyclictest66850irq/125-lan10:05:521
27958991717,0cyclictest66850irq/125-lan09:41:521
27958991717,0cyclictest66850irq/125-lan08:55:121
27958991717,0cyclictest66850irq/125-lan08:10:241
27958991717,0cyclictest66850irq/125-lan07:20:211
27958991716,1cyclictest66850irq/125-lan12:36:081
27958991716,1cyclictest66850irq/125-lan12:31:061
27958991716,1cyclictest66850irq/125-lan12:05:571
27958991716,1cyclictest66850irq/125-lan11:45:401
27958991716,1cyclictest66850irq/125-lan11:36:231
27958991716,1cyclictest66850irq/125-lan11:18:231
27958991716,1cyclictest66850irq/125-lan11:00:251
27958991716,1cyclictest66850irq/125-lan10:50:241
27958991716,1cyclictest66850irq/125-lan10:40:241
27958991716,1cyclictest66850irq/125-lan10:00:161
27958991716,1cyclictest66850irq/125-lan09:50:161
27958991716,1cyclictest66850irq/125-lan09:30:161
27958991716,1cyclictest66850irq/125-lan09:10:481
27958991716,1cyclictest66850irq/125-lan08:50:131
27958991716,1cyclictest66850irq/125-lan07:55:181
27958991716,1cyclictest66850irq/125-lan07:10:151
27958991616,0cyclictest66850irq/125-lan10:27:181
27958991615,1cyclictest66850irq/125-lan12:20:111
27958991615,1cyclictest66850irq/125-lan11:55:061
27958991615,1cyclictest66850irq/125-lan11:25:171
27958991615,1cyclictest66850irq/125-lan08:24:391
27958991615,1cyclictest66850irq/125-lan08:00:191
27958991615,1cyclictest66850irq/125-lan07:35:231
27958991615,1cyclictest66850irq/125-lan07:30:141
27963991515,0cyclictest771-21snmpd11:57:422
27963991515,0cyclictest2665-21cat07:25:152
27958991515,0cyclictest66850irq/125-lan08:40:151
27958991514,1cyclictest66850irq/125-lan09:46:191
27958991514,1cyclictest66850irq/125-lan08:30:171
27963991414,0cyclictest771-21snmpd08:10:152
27958991414,0cyclictest66850irq/125-lan07:15:131
27958991413,1cyclictest66850irq/125-lan08:15:151
27958991413,1cyclictest66850irq/125-lan07:25:171
27963991313,0cyclictest771-21snmpd07:58:242
27963991312,1cyclictest2415-21kworker/2:1+events10:32:502
27958991312,1cyclictest66850irq/125-lan09:00:121
27958991312,1cyclictest66850irq/125-lan07:50:141
27958991312,1cyclictest66850irq/125-lan07:45:181
27963991212,0cyclictest771-21snmpd12:05:592
27963991212,0cyclictest771-21snmpd08:03:252
27963991212,0cyclictest771-21snmpd07:45:172
27963991111,0cyclictest9230-21cat07:40:172
27963991111,0cyclictest771-21snmpd10:40:472
27963991111,0cyclictest771-21snmpd09:57:462
27963991111,0cyclictest771-21snmpd07:11:402
27963991111,0cyclictest3358-21cat09:35:152
27963991110,1cyclictest771-21snmpd10:19:592
27963991110,1cyclictest2415-21kworker/2:1+events11:42:392
27963991110,1cyclictest2415-21kworker/2:1+events09:26:552
27958991111,0cyclictest66850irq/125-lan08:05:141
27963991010,0cyclictest771-21snmpd12:15:362
27963991010,0cyclictest771-21snmpd11:25:472
27963991010,0cyclictest771-21snmpd10:52:152
27963991010,0cyclictest771-21snmpd10:12:042
27963991010,0cyclictest771-21snmpd09:11:082
27963991010,0cyclictest771-21snmpd08:26:102
27958991010,0cyclictest66850irq/125-lan09:07:401
279669998,1cyclictest769-21lldpd09:46:473
279669998,1cyclictest524-21avahi-daemon12:00:063
279669998,1cyclictest524-21avahi-daemon09:55:283
279669997,2cyclictest771-21snmpd09:29:393
279639999,0cyclictest771-21snmpd09:01:202
279639999,0cyclictest771-21snmpd08:45:192
279639999,0cyclictest771-21snmpd07:51:512
279639998,1cyclictest771-21snmpd10:21:482
279589998,1cyclictest66850irq/125-lan08:25:151
279549998,1cyclictest771-21snmpd11:58:030
279549998,1cyclictest771-21snmpd10:00:010
279549998,1cyclictest771-21snmpd09:41:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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