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2024-11-11 - 22:09

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #8

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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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 50 highest latencies:
System rackbslot8s (updated Mon Nov 11, 2024 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31329682136108,23sleep60-21swapper/607:07:456
31330112129116,8sleep40-21swapper/407:08:234
31329732127113,9sleep20-21swapper/207:07:502
31310142126111,10sleep30-21swapper/307:05:113
31329202119101,13sleep50-21swapper/507:07:045
31328422117103,9sleep10-21swapper/107:05:571
31330072116102,9sleep00-21swapper/007:08:200
31329602115100,10sleep70-21swapper/707:07:387
313338399112111,1cyclictest573-21snmpd09:41:384
3133391991030,100cyclictest0-21swapper/610:35:156
3133391991020,102cyclictest0-21swapper/607:25:306
31333879910299,3cyclictest573-21snmpd07:28:365
31333879910298,4cyclictest3363489-21cat12:00:165
313338099102100,2cyclictest573-21snmpd10:26:393
3133376991020,100cyclictest0-21swapper/210:17:512
31333719910299,3cyclictest573-21snmpd12:15:561
3133367991020,101cyclictest0-21swapper/011:12:320
3133395991010,99cyclictest0-21swapper/710:25:547
3133395991010,101cyclictest0-21swapper/709:00:137
3133395991010,0cyclictest0-21swapper/709:54:247
31333919910199,2cyclictest573-21snmpd10:14:466
31333919910198,3cyclictest573-21snmpd12:27:156
3133391991010,101cyclictest0-21swapper/612:13:286
31333879910199,2cyclictest573-21snmpd10:58:055
31333879910199,2cyclictest573-21snmpd09:35:535
313338799101100,1cyclictest573-21snmpd11:46:395
3133387991010,101cyclictest0-21swapper/511:01:515
3133387991010,101cyclictest0-21swapper/509:47:205
3133387991010,101cyclictest0-21swapper/508:40:145
3133387991010,100cyclictest0-21swapper/509:04:175
31333839910199,2cyclictest573-21snmpd12:34:264
31333839910199,2cyclictest573-21snmpd11:06:334
31333839910198,3cyclictest573-21snmpd10:58:444
31333839910198,3cyclictest573-21snmpd09:12:134
31333839910197,3cyclictest573-21snmpd11:11:384
3133376991010,101cyclictest0-21swapper/209:27:312
3133376991010,100cyclictest0-21swapper/208:05:362
3133376991010,0cyclictest0-21swapper/211:35:242
3133376991010,0cyclictest0-21swapper/209:13:052
31333719910199,2cyclictest573-21snmpd11:00:591
31333719910199,2cyclictest573-21snmpd10:36:561
31333719910199,2cyclictest573-21snmpd09:31:381
31333719910199,1cyclictest573-21snmpd08:39:031
31333719910198,3cyclictest573-21snmpd12:38:331
3133371991010,99cyclictest0-21swapper/107:48:191
3133371991010,100cyclictest0-21swapper/112:05:381
3133371991010,0cyclictest0-21swapper/109:53:111
313336799101100,1cyclictest573-21snmpd10:45:070
3133395991000,100cyclictest0-21swapper/712:24:087
3133395991000,100cyclictest0-21swapper/711:02:057
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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