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2025-12-03 - 01:30

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 Wed Dec 03, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2759911260,115ptp4l0-21swapper/119:08:131
2277726856,10sleep50-21swapper/519:07:227
2282126655,9sleep100-21swapper/1019:08:042
2281726554,9sleep60-21swapper/619:07:598
2276826556,7sleep110-21swapper/1119:07:173
2266926454,8sleep40-21swapper/419:05:586
2265226452,10sleep00-21swapper/019:05:420
2273026351,10sleep70-21swapper/719:06:499
40572600,0sleep60-21swapper/622:55:128
169802580,0sleep90-21swapper/921:05:1411
71472560,0sleep60-21swapper/622:15:208
121112550,0sleep100-21swapper/1022:20:242
2329699243,16cyclictest0-21swapper/419:45:016
232192220,0chrt0-21swapper/221:55:144
2330599213,10cyclictest0-21swapper/621:20:018
94980190,5rtkit-daemon0-21swapper/819:09:1610
2328699193,10cyclictest0-21swapper/222:35:004
2328699191,13cyclictest11990-21kworker/u24:022:45:004
2331599183,9cyclictest0-21swapper/822:20:0010
2331099181,16cyclictest0-21swapper/721:40:189
2329299183,9cyclictest0-21swapper/319:40:015
23292991813,3cyclictest0-21swapper/323:40:165
2328699183,9cyclictest0-21swapper/219:10:014
2327999183,9cyclictest0-21swapper/120:50:011
275991170,1ptp4l21-21ksoftirqd/120:10:191
2332699173,9cyclictest0-21swapper/1019:45:232
2331999171,12cyclictest8094-21kworker/u24:119:30:0111
2330199172,10cyclictest0-21swapper/519:30:017
2327999171,2cyclictest0-21swapper/120:15:191
2327399173,9cyclictest0-21swapper/023:54:590
275991160,0ptp4l0-21swapper/122:40:191
275991160,0ptp4l0-21swapper/122:15:231
275991160,0ptp4l0-21swapper/120:55:141
2331999162,8cyclictest0-21swapper/922:55:0011
2331599162,9cyclictest0-21swapper/819:35:0110
2331599162,8cyclictest0-21swapper/821:10:0010
2331099164,7cyclictest0-21swapper/722:14:599
2331099163,8cyclictest0-21swapper/723:40:249
2331099163,8cyclictest0-21swapper/722:20:249
2331099163,8cyclictest0-21swapper/719:40:259
2330599163,8cyclictest0-21swapper/623:35:008
2330599163,8cyclictest0-21swapper/621:05:018
2330199162,9cyclictest0-21swapper/500:10:007
2330199162,8cyclictest0-21swapper/523:15:007
23292991612,3cyclictest0-21swapper/300:10:155
2328699162,10cyclictest0-21swapper/220:20:004
2327999160,4cyclictest0-21swapper/120:20:171
224422160,0sleep00-21swapper/021:55:120
98352150,0sleep100-21swapper/1020:55:152
275991150,1ptp4l21-21ksoftirqd/119:40:191
275991150,1ptp4l21-21ksoftirqd/100:30:121
2333099153,8cyclictest0-21swapper/1119:50:013
2333099153,7cyclictest0-21swapper/1100:40:013
2331599152,8cyclictest0-21swapper/822:15:0010
2331599150,3cyclictest0-21swapper/800:15:1710
2331599150,2cyclictest29774-21expr20:40:1210
2331099152,8cyclictest0-21swapper/721:35:249
2331099151,7cyclictest0-21swapper/720:35:019
2330599152,8cyclictest0-21swapper/621:25:008
2330599152,8cyclictest0-21swapper/620:25:018
2329299153,7cyclictest0-21swapper/300:05:005
2329299152,8cyclictest0-21swapper/322:55:005
2328699153,9cyclictest0-21swapper/223:50:004
2328699153,8cyclictest0-21swapper/222:30:004
2327999154,7cyclictest0-21swapper/121:29:591
2327999153,7cyclictest0-21swapper/122:35:001
191591150,0getstats0-21swapper/219:20:324
275991140,0ptp4l0-21swapper/123:55:191
275991140,0ptp4l0-21swapper/123:55:191
2333099143,7cyclictest0-21swapper/1122:05:003
2333099142,7cyclictest0-21swapper/1123:47:093
2333099142,7cyclictest0-21swapper/1122:00:003
2331999142,8cyclictest0-21swapper/923:15:0011
2331999142,7cyclictest0-21swapper/922:40:0011
2331599142,8cyclictest0-21swapper/821:30:0010
2331599142,8cyclictest0-21swapper/821:05:0110
2331099142,7cyclictest0-21swapper/722:45:249
2330599143,7cyclictest0-21swapper/600:34:598
2329299143,7cyclictest0-21swapper/320:35:265
2327999143,7cyclictest0-21swapper/121:10:251
2327999142,7cyclictest0-21swapper/123:30:001
275991130,4ptp4l18115-21latency_hist21:49:591
275991130,1ptp4l21-21ksoftirqd/122:20:411
275991130,1ptp4l21-21ksoftirqd/122:11:281
275991130,1ptp4l21-21ksoftirqd/119:29:221
2333099132,7cyclictest0-21swapper/1123:10:003
2332699132,7cyclictest0-21swapper/1023:55:242
2332699132,7cyclictest0-21swapper/1023:55:242
2331999132,7cyclictest0-21swapper/920:15:0111
2331999132,6cyclictest0-21swapper/920:40:0111
2331599130,6cyclictest17303-21grep23:54:5910
2331099131,8cyclictest0-21swapper/721:50:009
2331099130,12cyclictest0-21swapper/722:45:009
2330199133,6cyclictest0-21swapper/520:40:017
2330199132,7cyclictest0-21swapper/522:30:237
2329299133,6cyclictest0-21swapper/320:46:285
2329299132,7cyclictest0-21swapper/319:15:255
2328699131,8cyclictest0-21swapper/219:40:004
2327399133,6cyclictest0-21swapper/000:15:000
2327399132,6cyclictest0-21swapper/020:00:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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