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2026-08-18 - 00:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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 highest latencies:
System rack9slot4s (updated Mon Aug 17, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94379911581143,12cyclictest0-21swapper/107:25:081
94379911581136,18cyclictest23129-21apt-get07:58:411
79722615560,32sleep00-21swapper/007:20:160
89592463418,30sleep10-21swapper/107:20:351
943699124100,19cyclictest0-21swapper/007:25:080
94369910583,19cyclictest0-21swapper/007:58:400
104442470,8sleep10-21swapper/108:50:151
197122441,27sleep119840-21grep07:50:121
9436993911,14cyclictest2225-21dbus-daemon12:20:200
100492370,4sleep081rcu_preempt08:50:000
943799361,23cyclictest0-21swapper/112:23:441
943699368,13cyclictest19236-21fschecks_time12:05:160
225802361,4sleep122674-21/usr/sbin/munin12:15:121
159832365,4sleep181rcu_preempt07:40:141
943799352,4cyclictest81rcu_preempt08:16:031
943699351,22cyclictest6121-21grep10:05:120
12032351,29sleep11208-21iostat_ios08:25:211
943699341,21cyclictest12608-21irqstats08:55:200
51712341,4sleep111564-21packagekitd11:26:471
943799336,4cyclictest81rcu_preempt09:36:021
943799332,17cyclictest17503-21munin-plugin-st09:10:001
299392331,4sleep129957-21munin-run12:35:001
242702331,28sleep124353-21memory08:00:221
220112331,4sleep122028-21iostat_ios09:20:191
216672330,21sleep10-21swapper/110:45:211
943699327,11cyclictest26150-21mailstats09:30:270
943699324,24cyclictest111rcuc/009:13:470
943699324,12cyclictest11565-21gdbus07:37:440
943699321,18cyclictest16563-21awk09:05:220
79232321,27sleep18013-21hddtemp_smartct11:35:161
943799316,4cyclictest81rcu_preempt09:10:431
943799316,4cyclictest81rcu_preempt08:44:371
943799316,4cyclictest81rcu_preempt08:44:371
943799313,4cyclictest81rcu_preempt12:11:271
9437993122,5cyclictest12469-21/usr/sbin/munin10:20:231
9437993121,7cyclictest28680-21users08:10:291
9436993124,5cyclictest0-21swapper/010:25:120
943699312,16cyclictest28074-21python09:35:280
943699312,14cyclictest23602-21diskstats09:25:150
943699311,4cyclictest81rcu_preempt10:13:140
943699311,4cyclictest81rcu_preempt08:29:390
9436993112,6cyclictest17887-21iostat_ios10:35:190
9436993112,6cyclictest1752-21diskstats12:45:140
943699311,18cyclictest30376-21cstates12:35:130
164772311,26sleep116481-21pidof11:56:591
123232310,2sleep012322-21sensors11:45:280
943799306,4cyclictest81rcu_preempt11:06:251
943799303,9cyclictest81rcu_preempt08:24:521
943799301,4cyclictest81rcu_preempt10:00:021
943799301,4cyclictest81rcu_preempt07:33:001
943699309,10cyclictest28326-21aten_r4power_vo12:30:110
943699303,4cyclictest81rcu_preempt11:58:350
943699303,14cyclictest2695-21snmpd08:20:230
9436993012,6cyclictest5315-21/usr/sbin/munin08:35:260
9436993012,5cyclictest31428-21iostat_ios09:45:190
943699301,16cyclictest21794-21ls12:10:290
9436993011,5cyclictest19706-21/usr/sbin/munin10:40:200
9436993011,5cyclictest10682-21/usr/sbin/munin08:50:190
943699301,15cyclictest0-21swapper/007:45:150
9436993010,7cyclictest0-21swapper/012:15:070
943699300,3cyclictest81rcu_preempt09:23:090
305772301,5sleep00-21swapper/009:44:060
168892301,5sleep10-21swapper/110:32:311
110922301,5sleep00-21swapper/011:44:330
9437992920,5cyclictest17912-21aten_r4power_vo07:45:111
9437992918,7cyclictest19242-21wget10:40:141
9437992918,7cyclictest15251-21grep07:35:281
9437992912,13cyclictest0-21swapper/110:55:151
943699299,5cyclictest15608-21cron09:05:000
943699292,23cyclictest11564-21packagekitd07:54:240
943699292,14cyclictest6246-21irqstats11:30:200
943699292,14cyclictest6246-21irqstats11:30:200
943699292,14cyclictest26758-21/usr/sbin/munin08:05:300
943699292,14cyclictest25644-21ntp_states10:55:240
943699291,9cyclictest0-21swapper/009:50:100
9436992912,5cyclictest29424-21ntp_states11:05:260
9436992911,5cyclictest4136-21/usr/sbin/munin10:00:120
943699291,15cyclictest3510-21/usr/sbin/munin09:55:310
9436992911,5cyclictest17249-21diskstats12:00:160
943699291,11cyclictest0-21swapper/010:21:420
9436992910,7cyclictest23548-21uname10:50:230
9436992910,6cyclictest13541-21cron07:31:590
91452291,5sleep00-21swapper/011:39:030
71432291,5sleep10-21swapper/111:32:481
71432291,5sleep10-21swapper/111:32:471
320002291,5sleep00-21swapper/012:40:080
319442291,5sleep00-21swapper/011:12:360
287412291,5sleep00-21swapper/008:10:580
247502291,5sleep10-21swapper/109:27:141
224742291,5sleep00-21swapper/010:46:540
201162291,5sleep10-21swapper/112:05:371
15182291,5sleep00-21swapper/011:19:060
149822291,5sleep10-21swapper/110:27:101
112322291,5sleep10-21swapper/110:17:261
943799289,5cyclictest0-21swapper/112:53:501
943799284,4cyclictest81rcu_preempt12:41:391
943799284,4cyclictest81rcu_preempt10:06:211
943799284,4cyclictest81rcu_preempt09:52:531
943799284,4cyclictest81rcu_preempt09:01:311
943799284,18cyclictest23541-21iostat_ios10:50:221
943799283,4cyclictest81rcu_preempt12:26:331
9437992819,5cyclictest30569-21fschecks_time12:35:151
9437992816,7cyclictest27009-21diskstats11:00:151
9437992815,7cyclictest1451-21/usr/sbin/munin12:45:311
943799281,4cyclictest81rcu_preempt08:46:321
943799280,4cyclictest81rcu_preempt11:23:401
943699288,6cyclictest4457-21python12:50:260
943699282,13cyclictest0-21swapper/011:54:100
943699282,12cyclictest28119-21wc12:30:010
943699282,12cyclictest16220-21df_inode07:40:150
9436992811,5cyclictest24225-21/usr/sbin/munin08:00:180
59922281,5sleep10-21swapper/108:38:001
54602281,5sleep00-21swapper/011:29:460
36302281,5sleep10-21swapper/109:56:421
323342281,5sleep10-21swapper/109:47:521
265942281,4sleep10-21swapper/109:31:571
25102281,5sleep00-21swapper/008:30:050
167762281,5sleep00-21swapper/010:31:190
13202281,5sleep10-21swapper/111:17:081
94802271,3sleep10-21swapper/110:13:451
943799277,8cyclictest270092chrt08:07:291
943799275,4cyclictest81rcu_preempt08:34:301
9437992718,5cyclictest31086-21uname11:10:231
9437992710,5cyclictest40250irq/92-i91510:35:301
943799270,3cyclictest81rcu_preempt11:45:461
943699271,23cyclictest0-21swapper/011:03:530
943699271,14cyclictest10086-21fschecks_count10:15:150
943699271,13cyclictest29943-21sort08:15:230
9436992710,5cyclictest6686-21awk08:40:170
9436992710,5cyclictest6686-21awk08:40:160
183452271,5sleep10-21swapper/112:01:411
17852271,5sleep00-21swapper/011:20:100
133262271,5sleep10-21swapper/108:55:581
943799261,12cyclictest29795-21ntp_states09:40:291
943699261,12cyclictest20361-21/usr/sbin/munin09:15:230
943799254,4cyclictest81rcu_preempt11:41:441
943799252,8cyclictest13464-21df11:50:131
943799248,5cyclictest40250irq/92-i91509:15:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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