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2026-03-21 - 23:43

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 Sat Mar 21, 2026 12:59:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
239679912581229,26cyclictest0-21swapper/007:26:380
239689911221113,6cyclictest0-21swapper/107:26:491
236802576530,32sleep10-21swapper/107:22:351
237702555508,32sleep00-21swapper/007:23:310
382821100,7sleep02396799cyclictest09:13:580
68952730,4sleep0111rcuc/009:16:230
2396799644,29cyclictest0-21swapper/011:27:160
23967996028,6cyclictest0-21swapper/011:31:150
2396799602,28cyclictest0-21swapper/011:06:350
250982560,4sleep1211ktimersoftd/110:09:341
250982560,4sleep1211ktimersoftd/110:09:331
2396799561,26cyclictest14734-21ls09:25:140
2396799552,28cyclictest0-21swapper/011:13:150
2396799552,19cyclictest25611-21users09:35:300
2396799541,6cyclictest30614-21fschecks_count11:55:160
2396799541,23cyclictest13276-21ssh11:04:010
2396799511,19cyclictest6076-21taskset10:22:480
2396899464,33cyclictest0-21swapper/108:49:151
103522460,23sleep122-21ksoftirqd/111:00:241
2396899453,15cyclictest3302-21runrttasks09:48:471
128732440,8sleep02396799cyclictest11:36:150
23968994017,7cyclictest22-21ksoftirqd/110:53:371
23968994017,7cyclictest22-21ksoftirqd/110:53:361
253982391,34sleep025408-21ssh12:23:120
2396799398,28cyclictest24260-21grep11:15:150
2396799393,21cyclictest28347-21sort09:00:000
2396799391,12cyclictest8782-21sh10:59:320
300792380,4sleep1201rcuc/109:40:261
2396899386,4cyclictest81rcu_preempt10:59:321
2396899373,30cyclictest0-21swapper/109:10:151
23968993727,6cyclictest0-21swapper/110:13:351
23968993713,14cyclictest22-21ksoftirqd/109:52:101
2396799379,16cyclictest5191-21unixbench_singl07:55:300
2396799378,16cyclictest32027-21diskmemload10:48:570
2396799375,4cyclictest81rcu_preempt12:50:120
2396899363,29cyclictest0-21swapper/111:58:151
23968993627,5cyclictest0-21swapper/111:54:561
2396899361,12cyclictest212482rm11:45:201
23967993612,8cyclictest16083-21ntp_states08:25:260
2396799361,22cyclictest23497-21sh09:34:240
2396899356,5cyclictest81rcu_preempt12:50:301
2396899355,4cyclictest29138-21fschecks_count11:20:151
2396799352,22cyclictest0-21swapper/009:44:270
2396799351,22cyclictest1777-21cron12:32:000
65952341,29sleep16606-21ssh10:23:341
265392341,29sleep132027-21diskmemload11:17:171
2396899344,4cyclictest81rcu_preempt10:27:521
2396899341,19cyclictest22322-21ssh11:13:091
23967993424,6cyclictest8375-21ssh09:51:210
23967993424,6cyclictest14287-21hddtemp_smartct12:45:160
23967993424,6cyclictest14287-21hddtemp_smartct12:45:150
2396799342,19cyclictest5186-21ntp_states12:35:240
2396799342,11cyclictest0-21swapper/010:41:160
2396799341,31cyclictest0-21swapper/010:50:360
2396799341,31cyclictest0-21swapper/010:50:360
2396799341,20cyclictest18611-21ssh11:42:330
2396899338,5cyclictest40550irq/92-i91511:30:211
2396899335,15cyclictest0-21swapper/112:00:501
2396899334,4cyclictest81rcu_preempt10:45:521
2396899333,4cyclictest81rcu_preempt12:42:271
2396899333,4cyclictest81rcu_preempt12:42:271
2396899333,4cyclictest81rcu_preempt12:25:111
2396899333,4cyclictest81rcu_preempt11:36:241
2396899333,4cyclictest81rcu_preempt10:37:381
23968993327,3cyclictest0-21swapper/112:15:361
23968993324,6cyclictest0-21swapper/110:16:551
23968993322,7cyclictest0-21swapper/109:16:151
2396899331,4cyclictest81rcu_preempt07:44:421
2396899331,30cyclictest0-21swapper/108:56:561
2396799332,27cyclictest0-21swapper/011:52:570
2396799331,5cyclictest81rcu_preempt10:30:010
2396799331,30cyclictest0-21swapper/010:16:350
2396799331,30cyclictest0-21swapper/008:49:350
2396799331,29cyclictest0-21swapper/008:21:360
23967993312,6cyclictest30170-21users11:20:300
261002321,9sleep10-21swapper/108:52:151
2396899326,5cyclictest81rcu_preempt09:20:241
2396899325,4cyclictest81rcu_preempt11:06:181
2396899324,4cyclictest81rcu_preempt11:28:241
2396899323,3cyclictest81rcu_preempt09:32:291
2396899322,8cyclictest0-21swapper/112:36:071
23968993224,6cyclictest0-21swapper/108:25:161
2396899321,5cyclictest81rcu_preempt10:03:501
23968993213,15cyclictest22-21ksoftirqd/110:43:171
2396899321,10cyclictest0-21swapper/111:41:181
2396799323,12cyclictest0-21swapper/011:45:140
23967993222,6cyclictest6667-21ssh12:04:040
2396799322,18cyclictest0-21swapper/009:05:240
2396799321,13cyclictest29184-21ssh10:13:300
2396799321,13cyclictest19443-21taskset12:16:350
2396899311,4cyclictest81rcu_preempt12:11:371
2396899311,4cyclictest81rcu_preempt07:57:271
2396899311,11cyclictest0-21swapper/112:46:311
2396899311,11cyclictest0-21swapper/112:46:311
2396799314,13cyclictest9455-21tune2fs12:40:150
2396799314,13cyclictest9455-21tune2fs12:40:150
23967993125,3cyclictest0-21swapper/010:31:160
2396799311,4cyclictest81rcu_preempt10:04:010
2396899305,4cyclictest81rcu_preempt08:40:111
2396899305,4cyclictest81rcu_preempt08:03:241
23968993016,11cyclictest22-21ksoftirqd/112:24:411
2396899301,4cyclictest0-21swapper/108:15:561
2396899301,27cyclictest0-21swapper/108:05:151
2396899301,15cyclictest14530-21taskset10:31:031
2396899301,15cyclictest11937-21sed09:55:231
2396799304,4cyclictest81rcu_preempt12:07:420
2396799302,4cyclictest81rcu_preempt09:23:210
2396799302,18cyclictest0-21swapper/009:04:180
2396799302,16cyclictest0-21swapper/010:05:140
2396799302,16cyclictest0-21swapper/010:05:140
2396799302,15cyclictest8413-21memory08:05:220
2396799302,13cyclictest7114-21users08:00:310
2396799301,4cyclictest81rcu_preempt12:12:430
23967993012,6cyclictest26291-21sensors_temp07:30:040
23967993012,5cyclictest11764-21df_inode08:15:130
2396799301,25cyclictest0-21swapper/012:26:310
23967993012,14cyclictest11207-21cut09:55:120
23967993011,6cyclictest21967-21ssh10:39:490
33292291,5sleep00-21swapper/007:52:250
258732291,5sleep10-21swapper/109:35:511
2396899296,4cyclictest81rcu_preempt08:35:011
23968992924,2cyclictest0-21swapper/107:37:461
23968992917,9cyclictest22-21ksoftirqd/112:07:261
2396899291,4cyclictest81rcu_preempt12:34:561
2396899291,24cyclictest15792-21seq09:25:301
2396799292,15cyclictest0-21swapper/009:48:010
2396799292,13cyclictest25249-21iostat_ios08:50:200
2396799291,13cyclictest0-21swapper/007:35:260
186642291,5sleep10-21swapper/108:33:141
150112291,5sleep10-21swapper/108:24:151
14772291,5sleep00-21swapper/007:48:500
2396899283,12cyclictest0-21swapper/107:45:271
2396899282,4cyclictest81rcu_preempt09:04:191
23968992822,3cyclictest3567-21copy07:54:361
2396899281,18cyclictest0-21swapper/108:13:571
23967992811,5cyclictest10395-21ntpq08:10:220
2396799281,14cyclictest18199-21grep08:30:260
2396799281,13cyclictest30918-21taskset07:40:150
206442281,5sleep00-21swapper/008:39:200
23968992713,10cyclictest0-21swapper/107:30:331
2396799269,5cyclictest21404-21wget08:40:180
23968992512,10cyclictest22-21ksoftirqd/109:05:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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