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2026-07-02 - 10:43

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 Thu Jul 02, 2026 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
49069911751165,7cyclictest0-21swapper/019:26:490
45832769724,29sleep10-21swapper/119:22:101
34432559511,33sleep00-21swapper/019:20:150
490799219210,6cyclictest0-21swapper/119:26:491
982421550,2sleep09821-21grep22:25:270
1489421150,9sleep1490799cyclictest22:40:161
310542800,8sleep10-21swapper/121:55:321
320122500,8sleep1490799cyclictest22:00:141
125972480,8sleep0490699cyclictest22:35:110
96422470,8sleep1490799cyclictest23:50:281
490699419,5cyclictest81rcu_preempt19:55:150
262222410,6sleep126215-21pidof20:20:001
302772380,23sleep03-21ksoftirqd/023:20:260
490699359,11cyclictest0-21swapper/019:40:150
88702341,29sleep08887-21wget23:50:160
4906993412,8cyclictest26679-21df_inode20:20:120
490699341,13cyclictest20865-21fschecks_time21:30:160
253822343,4sleep081rcu_preempt20:15:280
153072340,3sleep1211ktimersoftd/119:50:121
4907993316,5cyclictest4806-21sh22:15:001
4907993310,7cyclictest2225-21dbus-daemon20:24:211
490699336,17cyclictest32487-21fschecks_time20:35:170
490699336,17cyclictest32487-21fschecks_time20:35:160
4906993314,6cyclictest8396-21ntp_states19:30:230
232062331,3sleep023278-21python21:35:280
490799328,5cyclictest81rcu_preempt22:45:191
490699322,13cyclictest0-21swapper/022:05:240
490699322,13cyclictest0-21swapper/022:05:240
4906993213,6cyclictest26162-21hddtemp_smartct23:10:160
4906993210,11cyclictest21415-21basename00:24:590
245542321,5sleep124696-21users00:30:291
92882310,2sleep19285-21pidof19:35:001
490799316,4cyclictest81rcu_preempt21:28:121
490799315,4cyclictest81rcu_preempt21:05:581
4907993110,16cyclictest2225-21dbus-daemon21:49:581
490699317,19cyclictest10268-21ntp_states19:35:250
490699312,26cyclictest25866-21cron21:45:010
4906993113,6cyclictest32511-21ntp_states22:00:230
219282311,5sleep10-21swapper/121:33:151
490799305,4cyclictest81rcu_preempt00:48:001
4907993013,5cyclictest24329-21idleruntime-cro20:15:011
490699302,12cyclictest0-21swapper/022:40:210
490699301,4cyclictest81rcu_preempt00:15:460
47892301,5sleep00-21swapper/020:46:100
269512301,5sleep00-21swapper/000:39:190
241412301,5sleep00-21swapper/020:13:060
173452301,4sleep117431-21/usr/sbin/munin21:20:221
173452301,4sleep117431-21/usr/sbin/munin21:20:221
490799297,4cyclictest81rcu_preempt23:22:241
490799295,4cyclictest81rcu_preempt00:44:031
490799294,4cyclictest81rcu_preempt23:38:381
490799294,4cyclictest81rcu_preempt19:57:181
490799292,4cyclictest81rcu_preempt22:24:271
490799291,4cyclictest81rcu_preempt22:36:021
4907992912,14cyclictest24743-21sendmail_mailqu23:05:271
490799291,15cyclictest9854-21ls22:25:281
490699297,7cyclictest13686-21ntp_states21:10:240
490699297,5cyclictest81rcu_preempt00:45:010
490699292,14cyclictest7803-21/usr/sbin/munin20:55:200
490699292,14cyclictest10837-21latency_hist21:05:000
490699291,4cyclictest81rcu_preempt22:10:320
490699291,17cyclictest0-21swapper/000:30:230
4906992910,6cyclictest2537-21ls23:35:010
31542291,5sleep10-21swapper/120:43:531
309762291,5sleep00-21swapper/000:50:070
177282291,5sleep00-21swapper/022:47:180
166302291,5sleep00-21swapper/021:20:090
166302291,5sleep00-21swapper/021:20:080
145492291,5sleep00-21swapper/019:46:060
123182291,5sleep00-21swapper/021:06:090
115482291,5sleep10-21swapper/123:55:421
67322281,4sleep00-21swapper/020:51:510
64482281,5sleep10-21swapper/122:17:311
490799286,4cyclictest81rcu_preempt23:17:411
490799285,4cyclictest81rcu_preempt00:01:341
490799284,4cyclictest81rcu_preempt20:59:291
490799283,18cyclictest4924-21diskstats23:40:131
490799282,22cyclictest14525-21hddtemp_smartct00:05:211
490799281,5cyclictest81rcu_preempt21:38:251
490799281,4cyclictest81rcu_preempt20:46:551
490799281,3cyclictest81rcu_preempt21:00:211
490699282,14cyclictest7886-21python22:20:280
490699282,13cyclictest22202-21df23:00:150
490699282,13cyclictest20319-21diskstats22:55:130
490699282,13cyclictest0-21swapper/022:50:230
490699282,13cyclictest0-21swapper/022:50:230
4906992813,4cyclictest2225-21dbus-daemon20:06:140
490699281,22cyclictest11355-21taskset22:30:220
490699281,14cyclictest11565-21gdbus21:52:300
490699281,14cyclictest11565-21gdbus20:27:120
490699281,13cyclictest29838-21wget21:55:110
490699281,13cyclictest16775-21chrt19:54:460
490699281,12cyclictest2502-21smartctl-wrappe20:40:270
4906992810,7cyclictest31926-21uname23:25:190
4906992810,6cyclictest11564-21packagekitd20:00:300
288312281,5sleep00-21swapper/023:15:360
26172281,5sleep10-21swapper/122:07:391
26172281,5sleep10-21swapper/122:07:391
251562281,5sleep00-21swapper/023:06:210
228752281,5sleep10-21swapper/100:25:561
222202281,5sleep10-21swapper/120:07:391
192972281,5sleep10-21swapper/100:18:001
184642281,5sleep10-21swapper/122:50:181
184642281,5sleep10-21swapper/122:50:171
163772281,5sleep10-21swapper/121:19:141
147272281,5sleep10-21swapper/119:48:001
490799279,5cyclictest3286-21runrttasks00:24:281
490799275,4cyclictest81rcu_preempt23:49:301
490799275,4cyclictest81rcu_preempt00:50:481
490799274,3cyclictest81rcu_preempt20:36:021
490799274,3cyclictest81rcu_preempt20:36:021
490799273,4cyclictest81rcu_preempt20:04:591
4907992719,5cyclictest15906-21/usr/sbin/munin00:10:231
490699274,8cyclictest16201-21diskstats00:10:160
490699273,11cyclictest0-21swapper/000:00:270
490699271,17cyclictest0-21swapper/023:45:130
490699271,13cyclictest30493-21fschecks_count20:30:150
490699271,13cyclictest14833-21ntpdc00:05:280
490699271,11cyclictest18837-21grep21:25:160
4906992710,6cyclictest0-21swapper/021:45:200
299612271,5sleep10-21swapper/120:29:541
272482271,5sleep10-21swapper/123:13:381
257112271,5sleep10-21swapper/121:43:211
24492271,4sleep10-21swapper/123:34:461
232212271,5sleep10-21swapper/123:00:471
230252271,5sleep00-21swapper/000:27:280
164212271,5sleep00-21swapper/021:19:430
144102271,5sleep10-21swapper/121:13:201
127972271,5sleep10-21swapper/119:42:231
490799263,4cyclictest81rcu_preempt22:56:331
490799262,20cyclictest0-21swapper/119:35:261
490799262,10cyclictest29636-21munin-run21:55:001
490799261,4cyclictest81rcu_preempt23:28:291
4907992613,7cyclictest10919-21diskstats22:30:151
490799261,13cyclictest5327-21/usr/sbin/munin20:50:111
490699262,12cyclictest2225-21dbus-daemon22:17:460
490699261,12cyclictest3363-21kernelversion23:35:210
4906992515,6cyclictest29693-21iostat00:45:160
268822251,5sleep10-21swapper/100:38:341
4907992416,5cyclictest22-21ksoftirqd/120:30:421
490699242,17cyclictest11268-21python23:55:290
490699231,6cyclictest4910-21chrt23:40:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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