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2026-03-25 - 23:19

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 Wed Mar 25, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204459912271195,22cyclictest0-21swapper/007:26:150
204469911521142,7cyclictest0-21swapper/107:26:361
201872598516,67sleep00-21swapper/007:22:540
199752464417,32sleep10-21swapper/107:20:391
315472920,4sleep041ktimersoftd/009:12:230
274422810,4sleep16787-21kworker/1:409:41:131
97752790,4sleep041ktimersoftd/012:44:540
210372730,3sleep121038-21sh12:22:091
2044599601,29cyclictest2309-21cron10:20:000
2044599601,13cyclictest22478-21diskstats10:10:140
2044599571,13cyclictest17154-21cpuspeed_turbos11:45:120
2044599567,13cyclictest3302-21runrttasks09:43:430
20445995612,13cyclictest28519-21diskmemload10:00:340
20445995611,6cyclictest21219-21hddtemp_smartct09:35:160
2044599553,16cyclictest6710-21kernelversion08:10:210
20445995510,12cyclictest0-21swapper/009:31:040
2044599533,19cyclictest0-21swapper/011:18:580
2044599533,14cyclictest30497-21gdbus11:25:190
20445995326,5cyclictest0-21swapper/012:27:150
2044599532,13cyclictest7389-21munin-run09:54:590
20445995317,5cyclictest4671-21diskstats10:25:150
20445995317,5cyclictest4671-21diskstats10:25:150
2044599531,14cyclictest9339-21ssh12:10:170
2044599531,13cyclictest1468-21ssh09:15:130
2044599531,13cyclictest12354-21cstates11:40:110
2044599531,13cyclictest11842-21awk11:40:010
2044599531,13cyclictest11842-21awk11:40:010
2044599531,12cyclictest20541-21ssh12:21:240
20445995310,5cyclictest31191-21ssh12:32:520
20445995310,11cyclictest0-21swapper/010:31:540
2044599528,13cyclictest0-21swapper/007:58:110
2044599523,16cyclictest0-21swapper/012:39:480
2044599521,13cyclictest363-21ntp_states10:20:280
2044599521,13cyclictest17286-21seq12:52:570
20445995211,3cyclictest0-21swapper/010:07:420
20445995111,5cyclictest16448-21awk08:35:250
2044599511,13cyclictest31011-21grep09:45:190
2044599511,12cyclictest31982-21sh12:00:160
2044599502,7cyclictest15039-21users12:15:300
2044599502,12cyclictest24428-21memory10:45:220
20445995018,5cyclictest2403-21irqbalance11:01:560
20445995011,6cyclictest28575-21/usr/sbin/munin10:50:110
2044599501,11cyclictest28609-21wc09:10:010
2044599493,7cyclictest10755-21munin-run09:25:000
2044599492,12cyclictest23616-21irqstats08:55:200
2044599491,6cyclictest15421-21users10:35:300
20445994916,5cyclictest22675-21runrttasks11:50:240
20445994911,6cyclictest11811-21/usr/sbin/munin08:25:130
2044599491,11cyclictest21772-21ssh10:42:390
2044599488,6cyclictest8063-21/usr/sbin/munin08:15:110
2044599482,15cyclictest0-21swapper/009:01:250
2044599481,13cyclictest11634-21ssh11:05:250
322442470,7sleep12044699cyclictest09:46:091
2044599471,27cyclictest0-21swapper/011:57:220
2044599471,26cyclictest0-21swapper/011:13:220
2044599471,13cyclictest21636-21sh08:50:180
2044599471,12cyclictest29174-21fschecks_count07:45:150
2044599462,12cyclictest23954-21ntp_states07:30:220
2044599461,12cyclictest25876-21ntpq07:35:250
20445994610,5cyclictest11375-21fschecks_count09:25:150
20445994419,5cyclictest3-21ksoftirqd/012:45:550
2044599441,11cyclictest1124-21ssh10:55:130
131022440,8sleep12044699cyclictest12:48:051
60922430,4sleep0111rcuc/011:33:420
20445994111,7cyclictest14008-21fschecks_count08:30:160
2044599411,12cyclictest6372-21ssh12:06:540
2044699396,4cyclictest81rcu_preempt09:34:501
20446993922,6cyclictest22-21ksoftirqd/111:43:091
20446993910,15cyclictest19992-21diskmemload11:15:001
230622381,14sleep123075-21sh11:17:301
20446993710,4cyclictest81rcu_preempt10:07:561
2044699361,7cyclictest14788-21ssh09:28:511
93172351,30sleep19323-21ssh12:44:081
52282354,4sleep15269-21switchtime08:05:291
237252351,30sleep123729-21irqstats07:30:201
2044699356,5cyclictest81rcu_preempt10:20:221
2044699353,5cyclictest81rcu_preempt09:21:341
2044699352,29cyclictest0-21swapper/109:55:361
20446993513,12cyclictest40550irq/92-i91512:26:471
28692341,4sleep16787-21kworker/1:410:56:131
262822341,29sleep126296-21ssh10:47:151
2044699346,4cyclictest81rcu_preempt11:51:371
2044699344,4cyclictest81rcu_preempt12:30:171
2044699342,29cyclictest0-21swapper/109:39:361
2044699341,5cyclictest10612-21ssh11:38:161
2044699341,5cyclictest10612-21ssh11:38:151
2044699341,21cyclictest0-21swapper/111:00:461
2044699341,20cyclictest7967-21ssh12:09:141
149082341,4sleep114918-21ssh10:01:551
2044699335,25cyclictest3062-21cron12:37:001
2044699334,5cyclictest81rcu_preempt12:03:471
2044699334,4cyclictest81rcu_preempt11:07:461
2044699334,4cyclictest81rcu_preempt09:18:281
2044699333,5cyclictest81rcu_preempt12:51:121
20446993323,6cyclictest19290-21aten_r4power_en08:45:121
2044699332,28cyclictest0-21swapper/110:10:561
2044699332,18cyclictest0-21swapper/110:52:071
2044699331,6cyclictest1968-21lldpad10:32:191
2044699331,6cyclictest0-21swapper/110:25:351
2044699331,6cyclictest0-21swapper/110:25:351
2044699331,5cyclictest29141-21ssh11:24:151
2044699331,4cyclictest81rcu_preempt12:17:261
2044699331,30cyclictest0-21swapper/109:09:351
2044699331,16cyclictest7823-21basename08:15:001
20446993310,8cyclictest2206-21dbus-daemon10:43:231
2044599335,15cyclictest0-21swapper/007:54:130
2044699323,4cyclictest81rcu_preempt11:55:381
2044699322,4cyclictest81rcu_preempt11:45:431
2044699322,4cyclictest81rcu_preempt07:57:231
2044699322,27cyclictest0-21swapper/109:53:351
2044699322,18cyclictest0-21swapper/110:15:251
2044599324,4cyclictest81rcu_preempt11:23:200
2044699315,4cyclictest81rcu_preempt08:28:321
2044699315,12cyclictest0-21swapper/107:45:271
2044699313,4cyclictest81rcu_preempt10:39:051
2044699312,4cyclictest81rcu_preempt12:11:521
2044699311,4cyclictest81rcu_preempt07:37:431
2044699311,13cyclictest29472rm11:30:161
20446993110,6cyclictest28933-21cpu09:10:121
2044599318,5cyclictest81rcu_preempt09:55:240
2044599311,4cyclictest81rcu_preempt08:05:540
12692311,5sleep10-21swapper/111:28:551
2044699304,4cyclictest81rcu_preempt08:37:481
20445993012,5cyclictest20281-21/usr/sbin/munin08:45:280
282302291,5sleep10-21swapper/107:40:391
225352291,5sleep10-21swapper/108:51:431
2044699298,7cyclictest3302-21runrttasks08:20:231
2044699293,4cyclictest81rcu_preempt08:02:071
2044699284,18cyclictest23312-21diskstats08:55:131
2044699283,10cyclictest18401-21python08:40:271
2044599282,13cyclictest17874-21hddtemp_smartct08:40:170
2044599281,15cyclictest0-21swapper/008:20:120
149182281,6sleep10-21swapper/108:30:471
249082271,5sleep10-21swapper/109:00:091
2044699273,15cyclictest0-21swapper/107:50:591
2044699271,4cyclictest81rcu_preempt08:19:341
20445992710,5cyclictest3604-21users08:00:290
20445992710,5cyclictest27243-21forks07:40:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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