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2024-07-27 - 14:27

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 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 Jul 27, 2024 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
187262242165,25sleep10-21swapper/107:06:271
189382237164,22sleep30-21swapper/307:09:113
188262204166,25sleep20-21swapper/207:07:452
186382201166,23sleep00-21swapper/007:05:290
1121021780,4sleep31910799cyclictest10:30:133
19101999794,2cyclictest0-21swapper/211:15:012
318252750,2sleep00-21swapper/008:50:110
42872650,4sleep230-21rcuc/210:15:122
184612620,4sleep218465-21fschecks_time12:00:172
225372580,4sleep20-21swapper/212:10:132
19088993610,12cyclictest23166-21idleruntime-cro09:45:010
1908899313,13cyclictest26963-21awk08:40:010
1909699301,21cyclictest0-21swapper/109:58:361
1909699301,18cyclictest31862-21hddtemp_smartct12:30:181
1908899301,14cyclictest6793-21awk11:35:010
1908899291,12cyclictest12398-21/usr/sbin/munin09:20:280
1910199283,8cyclictest7034-40dnf07:53:332
1909699286,3cyclictest0-21swapper/109:35:191
1909699286,3cyclictest0-21swapper/109:35:191
1909699281,12cyclictest0-21swapper/109:44:301
1908899280,13cyclictest1806-21awk10:10:020
1909699272,11cyclictest17169-21awk10:45:011
1909699271,18cyclictest2880-21taskset12:38:471
1909699271,18cyclictest0-21swapper/109:53:511
1909699271,17cyclictest20855-21smart_sda10:50:271
1909699270,21cyclictest0-21swapper/110:00:191
1908899272,13cyclictest26568-21munin-run12:20:010
1908899271,9cyclictest0-21swapper/009:50:160
19096992620,3cyclictest28762-21idleruntime-cro12:25:021
1909699261,6cyclictest18771-21/usr/sbin/munin12:00:201
1909699261,17cyclictest0-21swapper/112:06:061
1909699261,17cyclictest0-21swapper/110:45:201
1909699261,17cyclictest0-21swapper/110:45:201
1908899261,13cyclictest12170-21munin-run09:20:010
7402250,2sleep00-21swapper/007:40:100
1910199250,23cyclictest0-21swapper/207:15:302
1909699251,18cyclictest0-21swapper/111:54:451
1908899251,12cyclictest11574-21munin-run08:05:020
315402240,4sleep121-21rcuc/107:35:141
1910199246,10cyclictest0-21swapper/210:00:192
1909699249,9cyclictest0-21swapper/111:18:331
1909699241,17cyclictest0-21swapper/111:48:261
1909699241,17cyclictest0-21swapper/111:48:261
1909699241,17cyclictest0-21swapper/111:31:031
1909699241,16cyclictest0-21swapper/111:06:361
1909699241,16cyclictest0-21swapper/110:26:551
1909699241,16cyclictest0-21swapper/109:49:151
1909699241,16cyclictest0-21swapper/109:24:231
1909699241,16cyclictest0-21swapper/109:05:321
1909699241,10cyclictest24096-21cpuspeed_turbos11:00:121
1909699240,15cyclictest0-21swapper/112:15:281
1908899241,9cyclictest9356-21sh08:00:010
1909699237,10cyclictest0-21swapper/110:23:591
19096992319,3cyclictest0-21swapper/110:38:391
19096992319,3cyclictest0-21swapper/107:19:471
19096992318,4cyclictest0-21swapper/108:25:161
19096992318,3cyclictest0-21swapper/111:40:281
1909699231,5cyclictest0-21swapper/112:27:201
1909699231,5cyclictest0-21swapper/111:56:131
1909699231,19cyclictest15266-21hddtemp_smartct09:25:171
1909699231,19cyclictest14333-21df08:10:131
1909699231,17cyclictest0-21swapper/110:30:511
1909699231,16cyclictest0-21swapper/111:14:121
1909699231,16cyclictest0-21swapper/110:08:421
1909699231,16cyclictest0-21swapper/109:15:261
1909699231,16cyclictest0-21swapper/108:45:151
1909699230,16cyclictest0-21swapper/111:22:121
19088992316,4cyclictest30594-21tail10:00:150
1908899231,3cyclictest0-21swapper/011:02:000
1908899231,10cyclictest291972interrupts11:10:200
1910799222,12cyclictest12995-21/usr/sbin/munin10:35:133
19107992216,3cyclictest6766-21head07:50:263
1910799221,5cyclictest0-21swapper/312:34:193
1910199229,4cyclictest0-21swapper/209:54:342
1910199221,11cyclictest0-21swapper/212:38:462
1909699221,15cyclictest0-21swapper/111:35:331
1909699221,15cyclictest0-21swapper/110:11:091
1909699221,15cyclictest0-21swapper/109:12:201
1909699221,15cyclictest0-21swapper/108:55:251
1909699221,15cyclictest0-21swapper/108:50:081
1909699221,12cyclictest9359-21latency_hist08:00:021
1909699221,12cyclictest24974-21munin-node08:35:121
1909699221,11cyclictest0-21swapper/110:55:031
1909699220,6cyclictest0-21swapper/110:18:071
1909699220,20cyclictest0-21swapper/108:06:451
227392211,2sleep00-21swapper/007:15:190
21542211,3sleep00-21swapper/011:22:100
1910799216,6cyclictest0-21swapper/312:10:193
19107992110,5cyclictest0-21swapper/310:16:093
19107992110,3cyclictest13469-21ntp_states09:20:223
1910199211,8cyclictest23379-21/usr/sbin/munin09:45:292
1910199211,8cyclictest0-21swapper/212:20:142
1910199211,7cyclictest0-21swapper/208:50:552
19096992117,3cyclictest0-21swapper/108:22:461
19096992117,3cyclictest0-21swapper/107:50:191
19096992117,3cyclictest0-21swapper/107:23:191
19096992113,3cyclictest0-21swapper/109:31:201
1909699211,2cyclictest0-21swapper/107:25:171
1909699211,19cyclictest0-21swapper/107:12:251
1909699211,15cyclictest0-21swapper/111:25:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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