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2026-01-11 - 00:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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 rack5slot3s.osadl.org (updated Sat Jan 10, 2026 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
302712237164,25sleep20-21swapper/207:07:142
302712237164,25sleep20-21swapper/207:07:142
302072203165,25sleep10-21swapper/107:06:241
302072203165,25sleep10-21swapper/107:06:241
303862200164,24sleep00-21swapper/007:08:460
303862200164,24sleep00-21swapper/007:08:450
302722199163,25sleep30-21swapper/307:07:153
302722199163,25sleep30-21swapper/307:07:153
200921650,5sleep23058199cyclictest10:55:202
296152550,1sleep10-21swapper/110:45:161
168332530,1sleep00-21swapper/010:15:210
117352530,4sleep011-21rcuc/010:05:140
51062520,4sleep25108-21needreboot08:35:192
79792500,1sleep00-21swapper/009:55:180
67592440,1sleep30-21swapper/308:40:173
3056799378,13cyclictest2312-21munin-run09:45:020
3056799335,13cyclictest25273-21perf08:10:010
3056799333,14cyclictest6091-21munin-run08:40:010
3056799323,13cyclictest24296-21munin-run10:35:010
30567993210,10cyclictest9545-21perf11:15:010
3056799312,16cyclictest20516-21munin-run11:40:010
3058199302,11cyclictest31139-21kworker/2:208:45:032
30588992915,8cyclictest0-21swapper/312:19:193
30588992914,9cyclictest0-21swapper/310:28:563
30588992913,9cyclictest0-21swapper/311:55:493
3058899291,20cyclictest0-21swapper/310:04:013
3058899291,19cyclictest0-21swapper/310:05:543
3056799296,11cyclictest13937-21perf11:25:010
3058899281,19cyclictest0-21swapper/309:56:273
3056799289,16cyclictest19904-21munin-run10:25:000
30588992713,8cyclictest0-21swapper/310:17:263
30588992713,5cyclictest0-21swapper/311:14:313
30588992712,9cyclictest0-21swapper/311:40:073
3058899271,19cyclictest0-21swapper/309:25:303
3058899271,18cyclictest0-21swapper/311:06:423
3058899271,18cyclictest0-21swapper/311:04:093
327172260,1sleep10-21swapper/112:05:181
30588992614,2cyclictest24000-21ntp_states11:45:193
3058899261,19cyclictest0-21swapper/310:34:233
3058899261,18cyclictest0-21swapper/311:22:123
3058899261,17cyclictest0-21swapper/312:02:063
3058899261,17cyclictest0-21swapper/309:16:403
3058899260,19cyclictest0-21swapper/310:20:413
3058899260,17cyclictest0-21swapper/310:35:443
3056799263,11cyclictest11121-21awk10:05:010
3056799261,12cyclictest4523-21basename09:50:010
3056799261,12cyclictest27455-21munin-run08:15:010
83192250,4sleep011-21rcuc/007:30:150
30588992517,2cyclictest0-21swapper/311:15:313
30588992514,3cyclictest0-21swapper/312:10:123
3058899251,18cyclictest0-21swapper/311:38:413
3058899251,17cyclictest0-21swapper/312:34:533
3058899251,17cyclictest0-21swapper/310:41:103
3058899251,17cyclictest0-21swapper/309:52:373
3058899250,19cyclictest0-21swapper/309:11:293
3058899250,17cyclictest0-21swapper/309:41:383
30581992521,3cyclictest0-21swapper/211:44:172
3058199251,12cyclictest31139-21kworker/2:211:05:382
3057599252,9cyclictest19287-21diskmemload12:10:591
3056799251,21cyclictest16686-21/usr/sbin/munin07:50:220
3056799251,21cyclictest10097-21/usr/sbin/munin07:35:220
3056799251,20cyclictest11519-21pmu-power12:30:240
3058899244,13cyclictest31103-21kworker/u8:210:55:433
3058899244,12cyclictest14636-21kworker/u8:010:48:303
30588992412,3cyclictest0-21swapper/309:34:463
30588992412,3cyclictest0-21swapper/309:34:463
3058899241,10cyclictest8710-21grep12:25:173
3057599247,9cyclictest8075-21grep11:10:141
3056799241,20cyclictest0-21swapper/009:05:570
30567992411,3cyclictest87350irq/128-enp1s0-09:29:040
3056799241,11cyclictest30775-21/usr/sbin/munin07:10:250
3056799241,11cyclictest14144-21/usr/sbin/munin11:25:090
3056799240,21cyclictest6698-21basename12:20:150
71312231,3sleep37289-21users07:25:263
4342231,18sleep1540-21memory08:25:191
314092230,1sleep00-21swapper/010:50:120
3058899231,16cyclictest0-21swapper/311:31:593
3058899231,15cyclictest0-21swapper/311:53:403
3058899231,15cyclictest0-21swapper/310:50:303
3058899231,15cyclictest0-21swapper/309:39:183
3058899231,15cyclictest0-21swapper/309:24:263
3058899231,14cyclictest26994-21kworker/u8:112:22:333
3058899231,11cyclictest26994-21sed08:10:233
3058899230,14cyclictest0-21swapper/312:38:393
3058199235,2cyclictest31139-21kworker/2:212:35:022
3057599238,4cyclictest0-21swapper/110:07:381
3057599234,12cyclictest0-21swapper/110:25:221
3057599231,3cyclictest5756-21munin-run12:20:011
3057599231,17cyclictest0-21swapper/109:33:591
3057599231,17cyclictest0-21swapper/109:33:591
3057599231,15cyclictest0-21swapper/110:54:171
3057599231,14cyclictest0-21swapper/109:55:101
3056799231,2cyclictest12892-21grep07:40:150
3056799231,19cyclictest814-21snmpd10:13:120
3056799231,10cyclictest814-21snmpd12:08:340
30567992310,3cyclictest0-21swapper/009:30:560
30567992310,3cyclictest0-21swapper/009:30:560
114502231,18sleep311644-21grep07:35:253
3058899229,3cyclictest12903-21/usr/sbin/munin08:55:233
3058899222,15cyclictest87150irq/126-enp1s0-10:10:413
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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