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2026-06-11 - 18:28

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 Thu Jun 11, 2026 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
69312234161,60sleep00-21swapper/007:06:370
70272233158,24sleep30-21swapper/307:07:543
69952232164,55sleep20-21swapper/207:07:282
69122203166,24sleep10-21swapper/107:06:221
218821540,5sleep3729899cyclictest09:20:253
7292991060,2cyclictest0-21swapper/207:59:212
7292999693,2cyclictest0-21swapper/211:09:162
7302610,1sleep20-21swapper/209:20:122
194822460,1sleep10-21swapper/107:35:121
7292993431,2cyclictest0-21swapper/212:12:182
7288993327,3cyclictest32687-21df08:05:121
282862330,4sleep3729899cyclictest07:55:133
728899301,8cyclictest0-21swapper/111:34:171
729899291,13cyclictest0-21swapper/310:00:203
728899295,11cyclictest0-21swapper/109:21:291
728899294,22cyclictest32601-21gltestperf11:45:141
728899291,17cyclictest0-21swapper/109:50:101
728199290,3cyclictest8519-21switchtime09:35:240
729899281,12cyclictest0-21swapper/312:24:213
7298992810,11cyclictest0-21swapper/311:15:593
728899282,18cyclictest9766-21kworker/u8:211:02:041
728899282,18cyclictest13789-21kworker/u8:110:07:311
728899281,11cyclictest0-21swapper/110:27:021
729899276,3cyclictest0-21swapper/310:05:143
729899270,15cyclictest0-21swapper/308:09:203
729899270,13cyclictest0-21swapper/309:50:223
728899271,4cyclictest24288-21ntp_states11:25:211
728899271,12cyclictest1-21systemd08:30:021
728899271,12cyclictest0-21swapper/112:33:301
728899271,12cyclictest0-21swapper/112:33:301
728899271,11cyclictest0-21swapper/112:23:471
728199277,17cyclictest29925-21munin-run08:00:010
728199271,14cyclictest8567-21munin-run08:25:020
729899261,13cyclictest0-21swapper/308:45:133
729899261,12cyclictest9318-21chrt07:13:273
729899261,12cyclictest0-21swapper/312:19:343
729899261,12cyclictest0-21swapper/307:48:483
729899261,10cyclictest23105-21cut11:25:013
7298992610,3cyclictest11322-21df08:30:133
728899263,9cyclictest28348-21diskmemload11:39:081
728899263,9cyclictest0-21swapper/110:22:041
728899263,12cyclictest9801-21latency_hist10:55:021
728899262,11cyclictest0-21swapper/109:55:331
728899262,11cyclictest0-21swapper/109:05:361
728899261,4cyclictest0-21swapper/110:19:351
728899261,4cyclictest0-21swapper/110:19:351
728899261,22cyclictest909-21sssd_nss10:10:311
728899261,16cyclictest0-21swapper/111:23:031
728899261,11cyclictest0-21swapper/110:04:141
728899261,11cyclictest0-21swapper/109:46:141
728899261,10cyclictest0-21swapper/110:30:511
728199261,13cyclictest27389-21munin-run11:35:000
729899259,3cyclictest0-21swapper/308:41:273
729899258,3cyclictest0-21swapper/311:36:243
729899258,3cyclictest0-21swapper/307:40:283
729899251,12cyclictest0-21swapper/308:20:593
729899251,11cyclictest0-21swapper/309:08:203
729899251,11cyclictest0-21swapper/308:29:073
729899251,11cyclictest0-21swapper/307:39:203
729899251,10cyclictest0-21swapper/312:25:593
729899251,10cyclictest0-21swapper/309:17:563
729899250,2cyclictest26835-21latency_hist10:20:023
729899250,2cyclictest26835-21latency_hist10:20:023
728899257,3cyclictest0-21swapper/111:05:141
728899257,3cyclictest0-21swapper/107:26:271
728899256,3cyclictest28298-21diskstats07:55:131
728899252,9cyclictest9373-21memory12:05:181
728899252,11cyclictest0-21swapper/108:35:211
728899251,9cyclictest0-21swapper/108:14:541
728899251,9cyclictest0-21swapper/107:46:381
728899251,6cyclictest0-21swapper/109:44:121
728899251,5cyclictest17593-21diskstats12:25:141
728899251,21cyclictest31244-21/usr/sbin/munin09:15:151
728899251,21cyclictest14815-21latency_hist12:20:011
728899251,21cyclictest12961-21ls08:35:021
728899251,12cyclictest0-21swapper/107:40:141
728899251,11cyclictest0-21swapper/112:11:151
728899251,11cyclictest0-21swapper/111:17:011
728899251,11cyclictest0-21swapper/110:40:141
728899251,11cyclictest0-21swapper/110:36:261
728899250,6cyclictest0-21swapper/111:41:421
729899249,3cyclictest7156-21memory12:00:203
729899249,3cyclictest0-21swapper/307:32:363
729899248,3cyclictest0-21swapper/311:30:243
729899248,3cyclictest0-21swapper/310:43:113
729899247,3cyclictest0-21swapper/307:54:083
729899241,10cyclictest0-21swapper/308:51:153
729899241,10cyclictest0-21swapper/308:36:553
729899240,12cyclictest0-21swapper/311:28:203
729899240,12cyclictest0-21swapper/309:13:563
729899240,11cyclictest0-21swapper/310:14:363
729299241,5cyclictest0-21swapper/210:52:142
729299241,4cyclictest0-21swapper/212:25:202
728899249,3cyclictest7125-21sed09:35:011
728899247,3cyclictest0-21swapper/107:20:241
728899241,9cyclictest0-21swapper/108:51:161
728899241,7cyclictest0-21swapper/112:00:321
728899241,5cyclictest0-21swapper/111:57:391
728899241,5cyclictest0-21swapper/109:37:501
728899241,4cyclictest0-21swapper/109:26:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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