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2025-12-23 - 05:35

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 376 highest latencies:
System rack9slot4s (updated Tue Dec 23, 2025 00:59:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
161539912711,1244cyclictest24916-21tune2fs19:45:151
161529912521217,24cyclictest9766-21kworker/0:219:25:120
161539911291090,14cyclictest0-21swapper/119:25:111
157852602557,30sleep10-21swapper/119:21:451
149932485439,30sleep00-21swapper/019:20:220
1615299217199,13cyclictest0-21swapper/019:45:150
3230621000,22sleep03-21ksoftirqd/000:38:370
221012960,4sleep0111rcuc/023:20:290
66842840,8sleep01615299cyclictest23:05:140
187872680,7sleep01615299cyclictest19:30:070
288162590,8sleep11615399cyclictest21:47:421
1615399461,15cyclictest0-21swapper/100:39:401
134492450,4sleep1211ktimersoftd/120:40:211
1615399404,5cyclictest22-21ksoftirqd/122:10:271
1615299401,7cyclictest3302-21runrttasks00:24:550
131332401,35sleep013147-21ssh00:18:480
1615299393,32cyclictest0-21swapper/021:12:350
16152993914,9cyclictest16408-21df23:15:160
295292380,8sleep11615399cyclictest22:21:271
16153993824,10cyclictest0-21swapper/123:55:351
136932380,2sleep013695-21grep23:45:230
1615299373,30cyclictest0-21swapper/023:14:350
1615399364,4cyclictest22-21ksoftirqd/121:50:311
1615399361,6cyclictest5094-21kworker/1:121:10:301
41962351,29sleep14303-21awk21:55:271
1615399356,4cyclictest81rcu_preempt23:03:021
1615399353,28cyclictest0-21swapper/121:30:151
16153993529,4cyclictest138250irq/90-eth021:35:271
1615399351,5cyclictest3136-21seq00:08:161
16153993514,7cyclictest2658-21sed20:10:301
16153993513,4cyclictest81rcu_preempt23:30:301
1615299352,30cyclictest0-21swapper/023:57:550
1615299352,30cyclictest0-21swapper/021:51:150
1615299351,31cyclictest0-21swapper/019:39:360
49802341,29sleep05052-21df22:30:140
33132341,29sleep13324-21ssh00:41:261
201532341,5sleep120229-21cat21:00:001
1615399345,25cyclictest12494-21cat23:44:561
1615399343,5cyclictest0-21swapper/123:20:181
1615399342,29cyclictest0-21swapper/123:50:161
1615399342,28cyclictest0-21swapper/123:17:361
1615399341,4cyclictest81rcu_preempt00:50:211
1615399341,15cyclictest0-21swapper/100:47:011
16153993410,4cyclictest81rcu_preempt22:17:541
16153993410,4cyclictest81rcu_preempt22:17:531
1615299347,5cyclictest1582-21cpu23:00:130
1615299345,5cyclictest81rcu_preempt21:24:090
1615299342,5cyclictest0-21swapper/022:59:150
1615299341,4cyclictest21528-21ssh22:13:560
16152993414,6cyclictest15126-21iostat22:40:190
1615299341,12cyclictest0-21swapper/022:29:550
64802331,5sleep00-21swapper/023:38:160
64802331,5sleep00-21swapper/023:38:150
253822331,5sleep00-21swapper/022:17:310
253822331,5sleep00-21swapper/022:17:310
1615399338,21cyclictest0-21swapper/122:51:191
1615399337,5cyclictest0-21swapper/100:13:201
16153993327,4cyclictest22-21ksoftirqd/122:45:001
1615399331,5cyclictest26104-21ssh00:31:351
1615399331,5cyclictest0-21swapper/120:29:161
16153993314,4cyclictest81rcu_preempt20:05:251
1615399331,29cyclictest5094-21kworker/1:120:46:161
1615399331,13cyclictest0-21swapper/100:03:121
1615299338,11cyclictest0-21swapper/023:52:320
1615299337,4cyclictest0-21swapper/022:00:440
1615299332,7cyclictest0-21swapper/000:27:560
16152993326,4cyclictest2645-21snmpd21:35:150
16152993324,5cyclictest3667-21ssh00:41:550
1615299332,18cyclictest0-21swapper/021:42:160
1615299332,18cyclictest0-21swapper/021:42:160
1615299331,19cyclictest12398-21sh00:52:230
151442331,4sleep015155-21ssh21:33:590
1615399328,13cyclictest40550irq/92-i91500:28:231
1615399325,4cyclictest81rcu_preempt22:55:281
1615399323,4cyclictest81rcu_preempt21:25:011
1615399323,4cyclictest81rcu_preempt21:19:041
1615399323,4cyclictest81rcu_preempt00:23:551
16153993224,5cyclictest0-21swapper/122:02:561
1615399322,18cyclictest0-21swapper/122:27:581
16153993218,8cyclictest20939-21iostat_ios21:00:211
1615399321,5cyclictest1968-21lldpad23:08:591
1615399321,5cyclictest1968-21lldpad22:46:581
1615399321,4cyclictest81rcu_preempt22:08:291
1615399321,29cyclictest0-21swapper/100:16:561
16153993212,4cyclictest81rcu_preempt21:42:241
16153993212,4cyclictest81rcu_preempt21:42:241
1615299325,8cyclictest0-21swapper/000:10:060
1615299324,4cyclictest81rcu_preempt21:19:180
1615299323,4cyclictest81rcu_preempt22:46:370
1615299323,4cyclictest81rcu_preempt00:46:510
1615299323,4cyclictest81rcu_preempt00:01:310
1615299322,19cyclictest0-21swapper/022:22:460
1615299321,5cyclictest0-21swapper/022:09:550
16152993210,10cyclictest0-21swapper/023:32:180
16152993210,10cyclictest0-21swapper/021:59:500
29482311,5sleep00-21swapper/020:12:170
294752311,5sleep00-21swapper/021:48:410
1615399318,6cyclictest30497-21gdbus19:44:321
1615399318,6cyclictest30497-21gdbus19:44:321
16153993116,4cyclictest22-21ksoftirqd/122:32:411
1615399311,4cyclictest81rcu_preempt22:39:051
16153993112,10cyclictest22-21ksoftirqd/123:25:131
1615299319,12cyclictest0-21swapper/000:05:480
1615299314,4cyclictest81rcu_preempt23:40:480
1615299313,4cyclictest81rcu_preempt21:28:510
1615299312,4cyclictest81rcu_preempt23:27:320
16152993124,4cyclictest0-21swapper/000:34:360
1615299311,28cyclictest0-21swapper/020:41:360
47422301,5sleep00-21swapper/020:16:190
1615399302,24cyclictest0-21swapper/123:38:531
1615399302,24cyclictest0-21swapper/123:38:531
1615399301,8cyclictest13758-21ssh23:12:031
16153993016,8cyclictest2172-21iostat_ios21:20:201
1615299302,15cyclictest27255-21/usr/sbin/munin19:50:270
16152993014,12cyclictest0-21swapper/022:51:410
1615299301,11cyclictest0-21swapper/022:38:100
103452301,5sleep00-21swapper/020:30:480
66432291,5sleep00-21swapper/020:21:190
314412291,5sleep00-21swapper/020:01:090
242832291,5sleep00-21swapper/019:44:580
242832291,5sleep00-21swapper/019:44:580
235432291,5sleep00-21swapper/021:06:030
235432291,5sleep00-21swapper/021:06:020
179462291,5sleep10-21swapper/120:51:341
1615399293,4cyclictest81rcu_preempt19:56:021
16153992919,7cyclictest22-21ksoftirqd/120:20:291
1615299292,14cyclictest15717-21/usr/sbin/munin20:45:270
1615299292,13cyclictest7995-21ntp_states20:25:240
16152992912,5cyclictest1104-21seq20:08:430
201392281,5sleep00-21swapper/020:59:520
180332281,4sleep00-21swapper/020:52:280
1615399284,13cyclictest40550irq/92-i91520:00:181
1615399281,23cyclictest11195-21df20:35:131
1615299281,15cyclictest0-21swapper/021:03:120
148262281,5sleep10-21swapper/123:46:191
105122281,5sleep10-21swapper/120:32:331
228972271,4sleep10-21swapper/121:05:221
228972271,4sleep10-21swapper/121:05:221
1615399275,11cyclictest81rcu_preempt19:35:301
1615399273,15cyclictest0-21swapper/120:19:081
16153992715,7cyclictest26818-21hddtemp_smartct19:50:171
1615299271,13cyclictest29139-21awk19:55:280
1615399264,4cyclictest40550irq/92-i91519:30:561
1615299231,14cyclictest0-21swapper/020:35:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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