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2026-05-03 - 18:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Sun May 03, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2922099974,86cyclictest25077-21awk09:22:331
2922099944,68cyclictest12063-21tr09:52:181
2922099934,54cyclictest28482-21open_files09:27:351
2922099924,81cyclictest18691-21kworker/1:008:37:071
2922099915,66cyclictest2825-21fschecks_time08:02:271
2922099914,80cyclictest25606-21cpuspeed_turbos10:12:191
2922099914,80cyclictest25606-21cpuspeed_turbos10:12:191
2922099914,68cyclictest23873-21seq10:08:071
2922099914,64cyclictest15204-21switchtime09:07:381
2922099913,68cyclictest8212-21netstat08:57:331
2922099913,68cyclictest28860-21fschecks_count06:02:321
2922099913,68cyclictest28860-21fschecks_count06:02:321
29220999121,44cyclictest23973-21crond07:47:091
2922099905,65cyclictest1419-21runrttasks08:38:481
29220999010,47cyclictest0-21swapper/110:17:151
2922099895,60cyclictest0-21swapper/107:28:141
2922099895,60cyclictest0-21swapper/107:28:141
2922099894,79cyclictest0-21swapper/107:55:251
2922099894,78cyclictest1419-21runrttasks07:05:481
2922099894,78cyclictest0-21swapper/109:37:271
2922099894,78cyclictest0-21swapper/107:08:041
2922099894,64cyclictest0-21swapper/105:37:151
2922099894,47cyclictest0-21swapper/105:42:411
2922099886,76cyclictest0-21swapper/107:37:261
2922099886,51cyclictest0-21swapper/107:23:301
2922099884,78cyclictest0-21swapper/109:35:091
2922099884,78cyclictest0-21swapper/109:35:091
2922099884,65cyclictest6793-21chrt07:21:081
2922099884,65cyclictest4543-21if_err_eth008:52:291
2922099875,65cyclictest8597-21taskset05:19:041
2922099875,65cyclictest8597-21taskset05:19:041
2922099874,67cyclictest0-21swapper/109:07:071
2922099874,66cyclictest32601-21cat07:57:401
2922099874,66cyclictest0-21swapper/110:00:131
2922099874,65cyclictest0-21swapper/108:42:241
29220998710,54cyclictest1026-21ssh07:12:311
29216998725,55cyclictest0-21swapper/007:02:290
2922099866,63cyclictest0-21swapper/109:50:001
2922099865,75cyclictest0-21swapper/109:42:401
2922099864,63cyclictest0-21swapper/109:12:181
2922099864,58cyclictest1419-21runrttasks09:20:531
2922099855,59cyclictest0-21swapper/104:57:511
2922099854,75cyclictest0-21swapper/110:22:211
2922099854,74cyclictest0-21swapper/108:27:221
2922099854,66cyclictest1128-21crond08:12:091
2922099854,66cyclictest1128-21crond08:12:091
2922099854,63cyclictest1838-21awk08:47:411
2922099854,63cyclictest1838-21awk08:47:411
2922099854,63cyclictest0-21swapper/108:12:271
2922099854,62cyclictest23863-21df_abs05:52:291
2922099853,52cyclictest16347-21fschecks_time08:22:281
29216998538,40cyclictest1419-21runrttasks09:34:270
29216998538,40cyclictest1419-21runrttasks09:34:270
29216998532,46cyclictest0-21swapper/007:42:370
29216998532,32cyclictest0-21swapper/008:17:350
2922099844,73cyclictest19660-21memory10:02:281
2922099844,56cyclictest0-21swapper/107:47:331
2922099843,75cyclictest0-21swapper/108:22:011
29216998432,45cyclictest0-21swapper/009:42:290
2922099834,50cyclictest14916-21sort07:32:291
29216998336,41cyclictest26495-21grep05:57:310
29216998332,44cyclictest31246-21sshd07:08:220
29216998332,44cyclictest0-21swapper/007:32:460
2922099824,72cyclictest0-21swapper/105:57:261
2922099823,73cyclictest0-21swapper/105:12:471
29216998235,40cyclictest32119-21ssh10:22:170
29216998226,49cyclictest0-21swapper/009:47:350
2922099815,58cyclictest0-21swapper/106:42:131
2922099814,71cyclictest0-21swapper/105:22:461
2922099814,54cyclictest0-21swapper/106:27:251
2922099813,47cyclictest10807-21diskstats06:32:301
29216998132,42cyclictest31008-21munin-node07:57:400
29216998130,44cyclictest0-21swapper/010:08:200
29216998128,47cyclictest0-21swapper/008:43:120
29216998122,53cyclictest0-21swapper/008:52:300
2922099803,57cyclictest0-21swapper/106:58:341
29216998035,39cyclictest819-21df_abs07:12:280
29216998033,41cyclictest27496-21cpuspeed_turbos09:27:210
29216998033,17cyclictest0-21swapper/009:18:010
29216998031,43cyclictest0-21swapper/010:02:210
29216998031,42cyclictest0-21swapper/008:12:420
29216998030,43cyclictest0-21swapper/009:22:230
29216998030,26cyclictest0-21swapper/008:42:070
29216998028,46cyclictest0-21swapper/008:36:190
29216998025,38cyclictest0-21swapper/007:52:230
2922099794,57cyclictest0-21swapper/105:37:491
29216997941,32cyclictest3041-21wc08:02:300
29216997934,39cyclictest10486-21sshd07:27:060
29216997934,38cyclictest15097-21munin-node09:57:310
29216997934,22cyclictest0-21swapper/007:27:420
29216997934,22cyclictest0-21swapper/007:27:420
29216997930,14cyclictest0-21swapper/007:21:210
29216997929,44cyclictest137951kworker/0:110:16:110
29216997929,44cyclictest137951kworker/0:110:16:110
29216997929,43cyclictest0-21swapper/009:08:310
29216997924,49cyclictest0-21swapper/008:49:550
29216997924,49cyclictest0-21swapper/008:49:550
2922099785,52cyclictest0-21swapper/105:07:471
2922099784,55cyclictest0-21swapper/106:22:251
29216997838,33cyclictest32672-21sed05:02:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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