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2026-08-04 - 03:57

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 Tue Aug 04, 2026 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2834911050,97ptp4l0-21swapper/119:05:551
2143226856,10sleep100-21swapper/1019:07:032
2147826554,9sleep40-21swapper/419:07:456
2161926353,8sleep110-21swapper/1119:09:523
2161326052,6sleep50-21swapper/519:09:477
1835125647,7sleep70-21swapper/719:05:129
2145425443,9sleep60-21swapper/619:07:238
2150225342,9sleep00-21swapper/019:08:050
2203199310,1cyclictest0-21swapper/1022:02:192
2199599193,11cyclictest0-21swapper/219:10:004
2199599193,11cyclictest0-21swapper/200:10:014
2199099192,11cyclictest0-21swapper/122:55:011
156422190,1sleep111009-21runrttasks19:40:193
283491180,1ptp4l21-21ksoftirqd/121:50:101
283491180,0ptp4l0-21swapper/120:10:221
2199599184,9cyclictest0-21swapper/221:05:014
2199599183,10cyclictest0-21swapper/220:35:004
2199599183,10cyclictest0-21swapper/220:25:004
2199599183,10cyclictest0-21swapper/219:55:004
2199099183,8cyclictest0-21swapper/122:25:011
2199099183,8cyclictest0-21swapper/122:25:001
283491170,1ptp4l21-21ksoftirqd/122:05:161
22031991713,2cyclictest0-21swapper/1019:35:162
2202299173,8cyclictest0-21swapper/819:45:0010
2200899172,8cyclictest0-21swapper/519:45:387
2199599174,8cyclictest0-21swapper/222:10:014
2199599173,9cyclictest0-21swapper/222:00:014
2199599173,10cyclictest0-21swapper/223:40:014
2199099173,8cyclictest0-21swapper/120:40:001
2199099173,8cyclictest0-21swapper/100:25:011
283491160,1ptp4l21-21ksoftirqd/122:50:011
2203599164,8cyclictest0-21swapper/1120:24:593
2203599163,7cyclictest0-21swapper/1120:30:003
2203199162,9cyclictest0-21swapper/1023:30:012
2202699160,1cyclictest0-21swapper/922:02:1911
2201799163,8cyclictest0-21swapper/722:55:019
2201399163,8cyclictest0-21swapper/620:45:018
2200499160,4cyclictest0-21swapper/423:30:016
2199599164,8cyclictest0-21swapper/219:15:264
2199599163,8cyclictest0-21swapper/223:40:224
2199599163,8cyclictest0-21swapper/200:40:014
2199099164,7cyclictest0-21swapper/100:10:011
2199099163,8cyclictest0-21swapper/123:50:001
2199099163,8cyclictest0-21swapper/121:30:001
2199099161,14cyclictest0-21swapper/100:35:151
2198699163,8cyclictest0-21swapper/023:40:010
2198699163,8cyclictest0-21swapper/000:30:010
2198699163,8cyclictest0-21swapper/000:05:010
214562167,7sleep80-21swapper/819:07:2510
283491150,1ptp4l21-21ksoftirqd/119:20:201
283491150,0ptp4l0-21swapper/121:35:131
2201799153,7cyclictest0-21swapper/722:20:009
2199599153,8cyclictest0-21swapper/222:05:264
2199599150,9cyclictest0-21swapper/220:05:004
2198699153,7cyclictest0-21swapper/022:26:550
2198699153,7cyclictest0-21swapper/022:26:550
2198699153,7cyclictest0-21swapper/022:15:010
2198699153,7cyclictest0-21swapper/019:26:140
2198699152,7cyclictest0-21swapper/021:15:000
2203599142,7cyclictest0-21swapper/1100:25:013
2201399141,8cyclictest0-21swapper/623:45:018
2200899143,8cyclictest0-21swapper/519:55:007
2199099142,7cyclictest0-21swapper/121:45:011
2199099142,7cyclictest0-21swapper/120:50:001
2199099142,7cyclictest0-21swapper/119:35:231
2198699143,7cyclictest0-21swapper/019:20:000
2198699143,6cyclictest0-21swapper/020:05:000
2198699142,7cyclictest0-21swapper/020:00:000
2198699141,8cyclictest0-21swapper/019:45:000
166552140,0sleep30-21swapper/321:05:195
283491130,4ptp4l0-21swapper/122:30:241
283491130,4ptp4l0-21swapper/122:30:241
283491130,1ptp4l21-21ksoftirqd/121:30:151
283491130,0ptp4l0-21swapper/123:55:201
283491130,0ptp4l0-21swapper/123:50:201
283491130,0ptp4l0-21swapper/122:45:251
283491130,0ptp4l0-21swapper/122:45:251
283491130,0ptp4l0-21swapper/122:00:131
283491130,0ptp4l0-21swapper/120:25:131
283491130,0ptp4l0-21swapper/119:15:141
283491130,0ptp4l0-21swapper/100:00:181
2203199132,7cyclictest0-21swapper/1019:25:232
2202299132,7cyclictest0-21swapper/820:20:0010
2201399132,7cyclictest0-21swapper/620:55:018
2200899130,1cyclictest0-21swapper/523:20:147
2200899130,1cyclictest0-21swapper/522:20:127
2200899130,1cyclictest0-21swapper/522:20:127
2200499132,7cyclictest0-21swapper/423:50:236
2199599133,7cyclictest0-21swapper/221:45:004
2199599132,8cyclictest0-21swapper/200:20:014
2199599132,7cyclictest18046-21diskmemload22:45:014
2199599132,7cyclictest18046-21diskmemload22:45:014
2198699130,8cyclictest0-21swapper/000:25:010
283491120,4ptp4l21-21ksoftirqd/121:10:151
283491120,3ptp4l3657-21cstates20:50:131
283491120,1ptp4l21-21ksoftirqd/122:10:131
283491120,1ptp4l21-21ksoftirqd/120:56:181
283491120,0ptp4l0-21swapper/123:25:251
283491120,0ptp4l0-21swapper/123:15:221
283491120,0ptp4l0-21swapper/122:15:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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