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2026-08-15 - 23:12

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 Aug 15, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
79699911941160,23cyclictest0-21swapper/007:25:120
79709911721146,22cyclictest21859-21munin-run08:00:011
78902603517,70sleep00-21swapper/007:24:440
75912513418,32sleep10-21swapper/107:21:361
797099210202,5cyclictest0-21swapper/107:25:111
796999126103,5cyclictest21878-21sendmail-msp08:00:000
250352620,2sleep025036-21mailstats08:05:280
250352620,2sleep025036-21mailstats08:05:270
241202460,4sleep024122-21timerandwakeup12:20:290
797099431,19cyclictest10939-21df07:30:141
7969993727,6cyclictest9254-21/usr/sbin/munin08:50:210
796999362,14cyclictest3684-21munin-run12:55:000
256632362,30sleep125815-21ls09:35:141
78252351,9sleep00-21swapper/010:11:590
69722341,5sleep10-21swapper/111:35:271
204482341,4sleep020522-21/usr/sbin/munin09:20:190
159022341,10sleep00-21swapper/009:09:000
797099331,11cyclictest81rcu_preempt08:47:581
797099331,11cyclictest81rcu_preempt08:47:581
796999335,14cyclictest25609-21aten_r4power_en09:35:110
797099326,4cyclictest81rcu_preempt10:44:131
796999327,13cyclictest11565-21gdbus08:35:420
796999324,3cyclictest81rcu_preempt11:46:540
796999323,26cyclictest3-21ksoftirqd/010:00:120
796999321,22cyclictest0-21swapper/009:47:450
796999321,17cyclictest23906-21pidof08:05:000
171882321,4sleep017270-21/usr/sbin/munin09:10:290
797099317,13cyclictest40250irq/92-i91510:45:151
797099314,4cyclictest81rcu_preempt11:28:431
7970993117,11cyclictest5893-21awk11:35:011
796999319,10cyclictest0-21swapper/011:35:270
796999312,15cyclictest31523-21diskstats09:50:150
7969993117,4cyclictest3-21ksoftirqd/007:30:130
7969993116,8cyclictest8886-21iostat_ios10:15:200
796999311,4cyclictest81rcu_preempt10:40:270
797099309,6cyclictest0-21swapper/112:49:161
797099308,5cyclictest6752cut09:55:121
797099305,4cyclictest81rcu_preempt11:45:391
797099304,9cyclictest2475-21iostat_ios12:50:191
797099301,9cyclictest81rcu_preempt11:23:271
796999301,20cyclictest0-21swapper/007:53:140
796999301,15cyclictest642-21/usr/sbin/munin09:55:160
59842301,5sleep10-21swapper/110:07:201
311872301,5sleep00-21swapper/008:22:400
306642301,5sleep00-21swapper/011:14:410
304552301,5sleep10-21swapper/111:12:311
303282301,5sleep00-21swapper/012:39:540
292152301,5sleep00-21swapper/008:16:540
265562301,5sleep00-21swapper/012:29:400
254432301,4sleep111564-21packagekitd08:06:401
254432301,4sleep111564-21packagekitd08:06:391
249582301,5sleep00-21swapper/010:59:030
122502300,9sleep0796999cyclictest11:50:190
95762291,5sleep00-21swapper/011:44:080
797099297,12cyclictest40250irq/92-i91510:50:271
797099295,4cyclictest81rcu_preempt12:13:531
797099295,4cyclictest81rcu_preempt08:53:561
7970992919,6cyclictest15651-21cron10:35:011
797099291,4cyclictest0-21swapper/107:46:251
797099291,3cyclictest81rcu_preempt07:41:361
796999296,11cyclictest32705-21cat08:25:290
7969992912,5cyclictest17431-21wget12:05:110
7969992912,5cyclictest11565-21gdbus11:03:540
7969992911,6cyclictest3111-21ntp_states11:25:240
796999291,10cyclictest0-21swapper/012:10:120
77092291,5sleep10-21swapper/110:10:461
284982291,5sleep00-21swapper/011:06:390
282682291,4sleep10-21swapper/112:33:001
259182291,5sleep00-21swapper/008:10:020
196262291,5sleep00-21swapper/009:18:370
161672291,5sleep00-21swapper/012:00:240
139032291,5sleep00-21swapper/007:36:020
132692291,5sleep10-21swapper/111:53:311
131022291,5sleep00-21swapper/009:00:220
797099285,3cyclictest81rcu_preempt08:10:091
797099284,18cyclictest29229-21iostat_ios12:35:221
797099284,17cyclictest22477-21diskstats08:00:161
797099283,4cyclictest81rcu_preempt09:23:091
797099283,4cyclictest81rcu_preempt08:35:431
797099282,7cyclictest24303-21iostat_ios09:30:211
7970992818,6cyclictest11688-21/usr/sbin/munin08:55:291
797099281,7cyclictest0-21swapper/107:50:161
7970992813,4cyclictest22-21ksoftirqd/107:35:121
796999286,11cyclictest40250irq/92-i91512:30:170
796999285,11cyclictest0-21swapper/010:45:260
796999282,14cyclictest16945-21irqstats07:45:210
796999281,4cyclictest81rcu_preempt09:41:290
796999281,14cyclictest22803-21seq12:19:530
796999281,14cyclictest10788-21iostat_ios10:20:200
796999281,13cyclictest464-21wc11:20:120
796999281,13cyclictest21815-21grep10:50:160
324712281,5sleep10-21swapper/111:18:571
322262281,5sleep00-21swapper/011:16:240
320612281,4sleep00-21swapper/012:43:110
308562281,5sleep10-21swapper/109:47:541
302002281,5sleep10-21swapper/108:20:201
218252281,5sleep00-21swapper/009:25:100
188562281,5sleep10-21swapper/112:07:521
178152281,5sleep10-21swapper/109:14:201
174522281,5sleep10-21swapper/110:39:151
173672281,5sleep00-21swapper/010:38:210
158322281,5sleep10-21swapper/109:08:141
152392281,5sleep00-21swapper/010:30:430
151932281,5sleep00-21swapper/011:59:000
148962281,5sleep10-21swapper/111:55:541
138672281,5sleep10-21swapper/109:02:201
118992281,5sleep00-21swapper/008:56:340
116792281,5sleep10-21swapper/110:22:431
99832271,5sleep10-21swapper/110:19:511
797099279,5cyclictest40250irq/92-i91512:25:261
797099277,4cyclictest81rcu_preempt11:05:131
797099274,4cyclictest81rcu_preempt08:33:371
797099273,4cyclictest81rcu_preempt11:44:011
797099273,4cyclictest81rcu_preempt10:56:221
797099273,4cyclictest81rcu_preempt09:50:501
797099271,22cyclictest12067-21/usr/sbin/munin10:25:121
796999279,4cyclictest25054-21taskset09:31:150
796999271,23cyclictest1045-21aten_r4power_en08:30:120
7969992712,12cyclictest4546-21fschecks_count11:30:160
796999271,15cyclictest0-21swapper/007:42:070
796999271,14cyclictest12123-21/usr/sbin/munin10:25:120
796999271,13cyclictest5717-21tail10:05:290
7042271,5sleep10-21swapper/108:28:451
292352271,5sleep10-21swapper/108:17:031
242992271,5sleep10-21swapper/112:20:411
232822271,4sleep10-21swapper/109:27:231
226472271,5sleep10-21swapper/112:18:131
193232271,5sleep10-21swapper/109:15:301
797099261,4cyclictest81rcu_preempt12:41:381
796999261,13cyclictest11565-21gdbus12:49:160
64062261,5sleep10-21swapper/108:43:031
797099259,5cyclictest40250irq/92-i91509:40:231
797099258,5cyclictest40250irq/92-i91510:00:271
796999251,14cyclictest0-21swapper/008:40:210
266952251,5sleep10-21swapper/111:02:251
169792251,5sleep10-21swapper/112:02:521
796999241,11cyclictest6812-21wget08:45:120
796999241,11cyclictest6812-21wget08:45:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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