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2026-05-01 - 17:48

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Fri May 01, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14597211995,19sleep00-21swapper/007:08:330
14636211794,17sleep20-21swapper/207:09:022
14635211194,12sleep10-21swapper/107:09:021
14456210796,6sleep30-21swapper/307:06:433
298922850,0sleep00-21swapper/011:26:350
261552740,1sleep2301ktimersoftd/210:48:252
218222730,0sleep00-21swapper/012:28:240
182482730,0sleep30-21swapper/308:36:003
55442680,0sleep00-21swapper/009:50:590
55442680,0sleep00-21swapper/009:50:590
189862250,1sleep00-21swapper/009:30:380
1474599213,2cyclictest31003-21diskmemload10:39:041
14745992017,2cyclictest20957-21kworker/u8:007:49:041
14748991916,2cyclictest31938-21kworker/u8:210:39:043
14746991916,2cyclictest30733-21kworker/u8:111:42:042
14746991916,2cyclictest16166-21kworker/u8:212:25:042
14746991916,2cyclictest13168-21kworker/u8:209:03:042
14745991916,2cyclictest993-21kworker/u8:108:02:011
14745991916,2cyclictest29573-21kworker/u8:010:52:041
14745991916,2cyclictest29549-21kworker/u8:012:10:011
14745991916,2cyclictest23026-21kworker/u8:112:19:041
14745991916,2cyclictest20234-21kworker/u8:010:15:041
14745991916,2cyclictest18291-21kworker/u8:111:14:041
14745991916,2cyclictest16991-21kworker/u8:207:23:041
1474599191,16cyclictest0-21swapper/112:39:041
14746991815,2cyclictest7057-21kworker/u8:009:20:052
14746991815,2cyclictest20957-21kworker/u8:007:42:052
1474599184,12cyclictest207150irq/24-eth110:25:291
14745991815,2cyclictest7057-21kworker/u8:009:24:051
14745991815,2cyclictest30733-21kworker/u8:111:34:051
14745991815,2cyclictest23160-21kworker/u8:108:59:051
14745991815,2cyclictest22501-21kworker/u8:110:04:041
14745991815,2cyclictest20885-21kworker/u8:012:30:051
14745991815,2cyclictest2037-21kworker/u8:109:17:041
14745991815,2cyclictest2037-21kworker/u8:109:14:051
14745991815,2cyclictest15604-21kworker/u8:209:34:041
14745991815,2cyclictest13168-21kworker/u8:209:09:041
14745991814,3cyclictest20957-21kworker/u8:008:07:051
1474599181,2cyclictest31003-21diskmemload10:40:051
1474599180,13cyclictest0-21swapper/109:27:041
14744991815,2cyclictest7057-21kworker/u8:009:23:050
14744991815,2cyclictest13382-21kworker/u8:210:05:050
14746991714,2cyclictest4403-21kworker/u8:311:49:042
14746991714,2cyclictest3168-21kworker/u8:211:05:052
14746991714,2cyclictest18291-21kworker/u8:111:15:042
1474699170,2cyclictest0-21swapper/210:39:042
1474699170,15cyclictest0-21swapper/210:05:042
14745991714,2cyclictest9139-21kworker/u8:011:20:051
14745991714,2cyclictest4403-21kworker/u8:311:57:051
14745991714,2cyclictest3168-21kworker/u8:211:03:041
14745991714,2cyclictest20957-21kworker/u8:008:13:041
14745991714,2cyclictest20957-21kworker/u8:007:41:051
14745991714,2cyclictest20957-21kworker/u8:007:39:041
14745991714,2cyclictest20234-21kworker/u8:010:45:041
14745991714,2cyclictest16991-21kworker/u8:207:17:051
14745991714,2cyclictest15747-21kworker/u8:011:53:041
14745991714,2cyclictest13168-21kworker/u8:209:01:041
1474599170,2cyclictest0-21swapper/109:59:041
14744991714,2cyclictest31674-21kworker/u8:209:46:050
14744991714,2cyclictest30733-21kworker/u8:111:40:050
14744991714,2cyclictest23026-21kworker/u8:112:32:010
1474499170,2cyclictest0-21swapper/010:39:040
21802160,0sleep20-21swapper/207:56:002
14748991613,2cyclictest7057-21kworker/u8:009:21:043
14748991613,2cyclictest31938-21kworker/u8:210:40:063
14748991613,2cyclictest2037-21kworker/u8:109:14:013
14748991613,2cyclictest15604-21kworker/u8:209:27:043
1474699161,3cyclictest0-21swapper/210:03:442
14746991613,2cyclictest9139-21kworker/u8:011:12:052
14746991613,2cyclictest31674-21kworker/u8:209:49:042
14746991613,2cyclictest23026-21kworker/u8:112:32:052
14746991613,2cyclictest20957-21kworker/u8:008:36:042
14746991613,2cyclictest16991-21kworker/u8:207:16:052
1474699161,13cyclictest18837-21hddtemp_smartct11:50:142
1474699160,3cyclictest3649-21snmpd11:59:352
1474699160,2cyclictest0-21swapper/210:40:062
1474699160,14cyclictest3895-21cpuspeed_turbos09:15:132
1474699160,14cyclictest10869-21sh10:31:052
14745991613,2cyclictest4403-21kworker/u8:311:47:051
14745991613,2cyclictest23026-21kworker/u8:112:23:051
14745991613,2cyclictest13168-21kworker/u8:208:29:041
1474599160,2cyclictest0-21swapper/110:34:061
14744991613,2cyclictest9139-21kworker/u8:011:30:050
14744991613,2cyclictest22501-21kworker/u8:110:10:010
14744991613,2cyclictest20957-21kworker/u8:007:50:040
14744991613,2cyclictest20234-21kworker/u8:010:30:020
14744991613,2cyclictest15747-21kworker/u8:011:51:040
14748991512,2cyclictest3201-21ssh10:58:463
14748991512,2cyclictest3168-21kworker/u8:211:01:043
14748991512,2cyclictest31511-21kworker/u8:112:39:043
14748991512,2cyclictest22501-21kworker/u8:109:59:043
14748991511,2cyclictest0-21swapper/310:16:033
1474899150,13cyclictest15068-21ssh12:20:263
1474899150,13cyclictest0-21swapper/310:46:563
14746991512,2cyclictest9139-21kworker/u8:011:23:042
14746991512,2cyclictest29549-21kworker/u8:012:08:042
14746991512,2cyclictest23160-21kworker/u8:108:58:052
14746991512,2cyclictest20957-21kworker/u8:008:14:012
14746991512,2cyclictest20957-21kworker/u8:007:29:042
14746991512,2cyclictest13168-21kworker/u8:208:54:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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