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2025-12-05 - 09:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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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Click here to display the system's profile data or here to proceed to next system.
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 rack0slot8s.osadl.org (updated Fri Dec 05, 2025 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275991830,73ptp4l0-21swapper/119:08:361
2905726956,10sleep50-21swapper/519:05:197
2996026654,9sleep110-21swapper/1119:06:263
3007226455,7sleep70-21swapper/719:07:589
3001726452,10sleep60-21swapper/619:07:098
2993226452,10sleep00-21swapper/019:06:030
2992926453,9sleep100-21swapper/1019:06:012
2886326452,9sleep40-21swapper/419:05:186
162932570,0sleep70-21swapper/700:25:209
162932570,0sleep70-21swapper/700:25:209
100172560,0sleep70-21swapper/719:20:229
325852540,0sleep20-21swapper/222:40:154
14772540,0sleep40-21swapper/420:35:166
3056799253,16cyclictest0-21swapper/422:35:006
3056799243,17cyclictest0-21swapper/400:04:596
3056799212,14cyclictest0-21swapper/420:15:006
3056799202,14cyclictest0-21swapper/422:50:006
3056099200,19cyclictest0-21swapper/321:35:165
3058599183,8cyclictest0-21swapper/819:50:0110
3058099184,8cyclictest0-21swapper/719:15:019
3055599183,10cyclictest0-21swapper/222:55:004
3055599183,10cyclictest0-21swapper/220:20:004
3055599183,10cyclictest0-21swapper/220:00:014
3055199181,13cyclictest12773-21kworker/u24:023:35:011
3058099173,8cyclictest0-21swapper/721:10:009
3058099171,12cyclictest12773-21kworker/u24:023:00:009
3057699173,8cyclictest0-21swapper/621:45:008
3057199173,8cyclictest0-21swapper/500:05:007
3056099173,8cyclictest0-21swapper/322:59:595
3056099173,8cyclictest0-21swapper/320:55:005
3055599173,9cyclictest0-21swapper/223:05:014
3055599173,9cyclictest0-21swapper/221:24:594
3055599173,8cyclictest0-21swapper/200:35:004
3055599173,8cyclictest0-21swapper/200:34:594
3055199173,8cyclictest0-21swapper/100:30:001
3055199173,8cyclictest0-21swapper/100:29:591
3055199172,9cyclictest0-21swapper/120:45:001
3055199172,10cyclictest0-21swapper/123:25:001
3054699173,8cyclictest0-21swapper/021:15:000
3054699172,9cyclictest0-21swapper/020:50:000
3054699172,8cyclictest0-21swapper/019:40:010
3059899163,7cyclictest0-21swapper/1122:10:003
3058599163,8cyclictest0-21swapper/823:57:1110
30585991614,1cyclictest0-21swapper/822:59:5510
3057699163,8cyclictest0-21swapper/619:25:018
3056099162,9cyclictest0-21swapper/322:10:005
3056099162,9cyclictest0-21swapper/321:25:275
3055599164,7cyclictest0-21swapper/220:45:004
3055199162,8cyclictest0-21swapper/120:49:591
3054699163,8cyclictest0-21swapper/021:55:280
3054699161,3cyclictest0-21swapper/023:15:180
292532167,6sleep80-21swapper/819:05:2310
275991160,1ptp4l21-21ksoftirqd/120:15:191
275991160,0ptp4l0-21swapper/119:40:201
3058999151,9cyclictest0-21swapper/900:10:2611
3058599152,8cyclictest0-21swapper/821:05:0010
3058099151,8cyclictest0-21swapper/722:40:279
3057699152,7cyclictest0-21swapper/621:05:288
3057699152,7cyclictest0-21swapper/600:10:008
3056799153,7cyclictest0-21swapper/420:05:256
3056799153,7cyclictest0-21swapper/419:35:246
3056099154,7cyclictest0-21swapper/322:05:005
3056099152,8cyclictest0-21swapper/323:30:005
3055599153,8cyclictest0-21swapper/223:55:004
3055599153,7cyclictest0-21swapper/219:15:014
3055199154,8cyclictest9446-21kworker/u24:221:35:001
3055199152,7cyclictest0-21swapper/123:45:261
3055199152,7cyclictest0-21swapper/119:50:241
30551991512,2cyclictest0-21swapper/120:10:191
3054699152,7cyclictest0-21swapper/021:15:000
3054699152,7cyclictest0-21swapper/000:10:000
275991150,0ptp4l0-21swapper/121:15:261
3059899143,7cyclictest0-21swapper/1122:44:593
3059899143,7cyclictest0-21swapper/1119:45:013
30598991410,3cyclictest0-21swapper/1122:10:193
3058999143,7cyclictest0-21swapper/920:15:2511
3058599142,7cyclictest0-21swapper/823:05:0010
3058599141,9cyclictest12773-21kworker/u24:000:05:0110
3058099143,7cyclictest0-21swapper/722:25:009
3058099141,2cyclictest0-21swapper/720:45:179
3057699143,7cyclictest0-21swapper/623:25:008
3057699142,8cyclictest0-21swapper/619:55:018
3057199143,7cyclictest0-21swapper/523:39:597
3057199142,7cyclictest0-21swapper/500:15:017
3057199141,7cyclictest0-21swapper/519:30:007
3056099142,7cyclictest0-21swapper/323:50:235
3055599142,8cyclictest0-21swapper/200:00:014
3055199143,6cyclictest0-21swapper/121:55:001
3055199142,7cyclictest0-21swapper/122:09:591
3055199142,7cyclictest0-21swapper/121:00:001
3055199141,8cyclictest12773-21kworker/u24:000:10:001
3054699143,7cyclictest0-21swapper/020:05:010
3054699142,7cyclictest0-21swapper/021:10:000
3054699140,2cyclictest0-21swapper/022:35:180
275991140,1ptp4l21-21ksoftirqd/122:41:281
275991140,0ptp4l0-21swapper/119:15:141
3059899131,7cyclictest0-21swapper/1100:20:003
3059899131,7cyclictest0-21swapper/1100:20:003
3059899131,12cyclictest0-21swapper/1100:05:003
3059499130,1cyclictest0-21swapper/1000:10:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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