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2026-09-20 - 12:16

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 Sun Sep 20, 2026 00:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
294822229162,54sleep20-21swapper/219:05:092
312072212183,19sleep10-21swapper/119:07:011
312702202164,25sleep00-21swapper/019:07:490
313252201165,24sleep30-21swapper/319:08:323
2739021440,3sleep13152799cyclictest21:25:141
325052800,1sleep30-21swapper/300:05:013
123122560,3sleep33153999cyclictest19:35:253
157232540,1sleep20-21swapper/222:10:262
132122520,4sleep33153999cyclictest00:33:583
31522994010,14cyclictest11113-21munin-run00:30:010
3152299377,14cyclictest28406-21munin-run20:15:010
49562350,1sleep00-21swapper/020:35:010
3152799351,26cyclictest0-21swapper/120:35:171
3152799351,11cyclictest0-21swapper/120:49:371
31522993510,12cyclictest20852-21munin-run22:25:010
3152299346,13cyclictest23057-21awk22:30:010
3152299334,13cyclictest16456-21munin-run22:15:010
3152299331,22cyclictest13950-21kworker/0:122:42:010
3152299314,12cyclictest12073-21awk22:05:010
3152299311,10cyclictest25536-21kworker/0:000:23:410
3152299301,19cyclictest13950-21kworker/0:122:36:090
3152799291,12cyclictest0-21swapper/122:31:491
3152799290,5cyclictest0-21swapper/100:12:531
3152799290,13cyclictest0-21swapper/121:11:591
3152799290,11cyclictest0-21swapper/121:18:411
93832280,4sleep09386-21fschecks_time19:30:160
93832280,4sleep09386-21fschecks_time19:30:160
3152799281,12cyclictest0-21swapper/121:30:331
3152799281,11cyclictest0-21swapper/120:19:451
3152799281,11cyclictest0-21swapper/119:40:491
3152299281,18cyclictest13950-21kworker/0:123:19:490
166822280,3chrt16681-21gltestperf21:00:170
3153999271,16cyclictest0-21swapper/321:53:253
3152799272,17cyclictest0-21swapper/100:22:251
3152799271,11cyclictest0-21swapper/123:42:571
3152799271,11cyclictest0-21swapper/123:06:211
3152799271,11cyclictest0-21swapper/123:01:011
3152799270,13cyclictest0-21swapper/121:37:451
3152799270,11cyclictest0-21swapper/122:09:331
3152299272,15cyclictest31578-21kworker/0:221:22:450
3152299271,9cyclictest13950-21kworker/0:123:30:570
3152299271,11cyclictest13950-21kworker/0:122:32:330
3153999260,12cyclictest0-21swapper/319:40:473
3152799261,9cyclictest0-21swapper/119:14:571
3152799261,8cyclictest0-21swapper/119:39:131
3152799261,8cyclictest0-21swapper/119:33:291
3152799261,8cyclictest0-21swapper/119:33:291
3152799261,7cyclictest0-21swapper/120:58:491
3152799261,11cyclictest0-21swapper/122:26:251
3152799261,11cyclictest0-21swapper/121:07:211
3152799260,10cyclictest0-21swapper/121:02:091
3152299260,20cyclictest13950-21kworker/0:123:21:170
316122251,3sleep10-21swapper/122:47:181
3153299251,8cyclictest2324-21munin-run00:10:012
3152799251,9cyclictest0-21swapper/123:21:331
3152799251,9cyclictest0-21swapper/122:17:021
3152799251,9cyclictest0-21swapper/119:52:051
31527992519,3cyclictest9919-21/usr/sbin/munin00:25:201
3152799251,8cyclictest0-21swapper/121:47:491
3152799251,7cyclictest0-21swapper/100:09:451
3152799251,22cyclictest0-21swapper/122:13:451
3152799251,17cyclictest0-21swapper/123:35:011
3152799251,11cyclictest0-21swapper/121:55:531
3152799251,11cyclictest0-21swapper/120:32:351
3152799251,11cyclictest0-21swapper/119:57:331
3152799251,11cyclictest0-21swapper/119:19:211
3152799251,10cyclictest0-21swapper/122:52:091
3152799251,10cyclictest0-21swapper/120:52:451
3152799251,10cyclictest0-21swapper/120:44:371
3152799251,10cyclictest0-21swapper/100:16:571
3152299251,9cyclictest13950-21kworker/0:123:03:090
3152299251,8cyclictest5430-21kworker/0:221:58:410
31539992413,6cyclictest12923-21sensors20:50:233
3153999240,2cyclictest0-21swapper/323:21:463
3153299249,3cyclictest0-21swapper/222:36:292
3153299243,5cyclictest0-21swapper/222:27:022
3153299241,5cyclictest0-21swapper/221:25:172
3152799242,19cyclictest27827-40dnf23:52:201
3152799241,9cyclictest0-21swapper/122:20:141
3152799241,9cyclictest0-21swapper/121:54:051
3152799241,14cyclictest0-21swapper/123:55:071
3152799241,11cyclictest0-21swapper/119:28:471
3152799241,10cyclictest11958-21chrt22:03:511
3152799241,10cyclictest0-21swapper/120:13:311
3152799241,10cyclictest0-21swapper/120:00:591
3152799240,12cyclictest0-21swapper/122:36:491
3152799240,11cyclictest0-21swapper/123:48:171
3152799240,11cyclictest0-21swapper/119:24:511
3152799240,10cyclictest0-21swapper/122:40:291
3152299242,9cyclictest8222-21kworker/0:019:13:150
3152299241,9cyclictest13950-21kworker/0:123:25:330
3152299240,9cyclictest13950-21kworker/0:122:48:210
3153999236,3cyclictest0-21swapper/322:30:393
3153999235,3cyclictest0-21swapper/323:08:303
3153999232,13cyclictest12628-21df_inode22:05:143
3152799237,8cyclictest0-21swapper/123:38:221
3152799231,9cyclictest0-21swapper/100:04:371
3152799231,8cyclictest0-21swapper/120:23:331
3152799231,4cyclictest0-21swapper/100:37:361
3152799231,14cyclictest0-21swapper/121:43:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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