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2026-09-08 - 16:28

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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 rack7slot7s.osadl.org (updated Tue Sep 08, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1220729066,8sleep20-21swapper/207:08:522
1204128774,9sleep00-21swapper/007:06:410
1223328666,9sleep30-21swapper/307:09:133
1209927958,6sleep10-21swapper/107:07:261
15922570,0sleep10-21swapper/110:24:561
1240599260,26cyclictest0-21swapper/210:21:402
1240599240,23cyclictest0-21swapper/212:13:042
1240599230,1cyclictest0-21swapper/209:34:062
1240599220,22cyclictest0-21swapper/209:19:562
1240399220,1cyclictest0-21swapper/111:12:441
12408992120,1cyclictest5386-21diskmemload10:19:113
1239999210,1cyclictest0-21swapper/011:41:410
1240599200,20cyclictest0-21swapper/212:01:282
1240399200,3cyclictest22726-21latency_hist07:30:001
12408991916,2cyclictest0-21swapper/311:00:163
1240599190,18cyclictest0-21swapper/211:37:122
1239999190,1cyclictest0-21swapper/012:15:290
1239999190,19cyclictest0-21swapper/012:24:120
1240899180,1cyclictest0-21swapper/309:27:393
12405991717,0cyclictest0-21swapper/209:25:132
12405991717,0cyclictest0-21swapper/208:10:192
12403991716,1cyclictest0-21swapper/109:30:581
12399991712,4cyclictest13-21ksoftirqd/010:45:130
12399991712,4cyclictest13-21ksoftirqd/009:34:190
12399991712,1cyclictest13-21ksoftirqd/010:13:050
1239999170,12cyclictest0-21swapper/008:20:160
1240399161,14cyclictest5386-21diskmemload10:39:391
12403991611,3cyclictest0-21swapper/111:40:421
1240399160,12cyclictest0-21swapper/112:15:501
1239999165,7cyclictest24252-21apt-get11:55:130
12408991514,1cyclictest0-21swapper/312:20:133
1240899150,1cyclictest0-21swapper/309:00:123
12405991515,0cyclictest0-21swapper/210:12:202
12405991514,1cyclictest0-21swapper/210:54:482
1240599150,1cyclictest0-21swapper/211:24:572
12403991510,5cyclictest38150irq/131-snd_hda11:04:431
1240399150,2cyclictest0-21swapper/111:37:441
1240399150,14cyclictest0-21swapper/110:43:181
1239999150,1cyclictest141rcu_preempt12:10:240
12408991412,1cyclictest1969-21sh11:22:123
1240899141,1cyclictest141rcu_preempt11:48:163
12408991410,3cyclictest29303-21wc10:40:263
1240599148,6cyclictest8314-21apache211:26:482
1240599141,5cyclictest0-21swapper/208:40:162
12405991411,2cyclictest23496-21cron08:40:002
1240599141,12cyclictest0-21swapper/212:29:272
1240599141,12cyclictest0-21swapper/211:55:152
12405991411,2cyclictest0-21swapper/210:08:322
12405991411,2cyclictest0-21swapper/210:08:312
1240599140,2cyclictest0-21swapper/211:10:132
1240599140,14cyclictest0-21swapper/209:12:382
1240599140,13cyclictest0-21swapper/211:50:372
1240599140,12cyclictest0-21swapper/209:37:172
1240399141,8cyclictest10114-21ssh10:10:191
12403991412,2cyclictest0-21swapper/112:05:351
1240399141,11cyclictest0-21swapper/109:35:211
12403991410,2cyclictest17036-21wc11:50:191
1240399140,13cyclictest0-21swapper/111:55:251
1239999148,5cyclictest181irq_work/010:19:500
12399991412,1cyclictest161rcuc/012:00:150
12399991411,2cyclictest16347-21wc11:30:250
12399991410,3cyclictest2528-21grep07:55:150
12399991410,3cyclictest21667-21grep08:35:150
12399991410,1cyclictest13-21ksoftirqd/012:07:400
12399991410,1cyclictest13-21ksoftirqd/011:35:240
1239999140,8cyclictest6818-21awk08:05:000
1240899139,3cyclictest26174-21grep11:55:273
1240899139,3cyclictest22843-21basename09:20:143
1240899133,6cyclictest39-21ksoftirqd/311:35:133
1240899131,3cyclictest141rcu_preempt09:45:183
12408991310,2cyclictest4922-21sed09:05:263
12408991310,2cyclictest4097-21cat10:25:243
12408991310,2cyclictest29257-21grep07:40:273
12408991310,2cyclictest23477-21grep07:30:213
12408991310,2cyclictest23462-21cron09:40:003
12408991310,2cyclictest17679-21sed11:50:253
12408991310,2cyclictest15453-21cat09:15:203
12408991310,2cyclictest12794-21grep10:30:283
1240899130,12cyclictest21202-21grep10:35:283
1240899130,12cyclictest2022-21cron07:55:003
1240899130,10cyclictest6046-21apache_processe11:25:113
1240599139,3cyclictest1510-21grep09:00:152
1240599135,4cyclictest225-21systemd-journal10:30:042
12405991310,2cyclictest29736-21cat11:20:002
12405991310,2cyclictest25859-21ls12:35:002
12405991310,2cyclictest24820-21grep09:40:182
12405991310,2cyclictest19201-21tr07:20:222
1240599130,2cyclictest0-21swapper/207:11:172
1240399139,2cyclictest24065-21cut09:40:141
1240399139,2cyclictest15387-21wc07:15:011
1240399138,3cyclictest5364-21cron09:10:001
1240399131,3cyclictest225-21systemd-journal09:55:001
12403991312,1cyclictest0-21swapper/110:19:111
12403991310,2cyclictest7996-21grep11:25:251
12403991310,2cyclictest7958-21sed11:45:171
12403991310,2cyclictest29286-21grep08:50:161
12403991310,2cyclictest27275-21head08:45:211
12403991310,2cyclictest24629-21wc10:00:001
12403991310,2cyclictest1925-21wc12:40:001
12403991310,2cyclictest12969-21grep08:15:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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