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2026-06-08 - 08:01

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 Mon Jun 08, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
219609912761236,35cyclictest22123-21aten_r4power_cu19:25:121
219599910961076,17cyclictest27941-21kworker/0:119:25:090
215582579534,29sleep10-21swapper/119:21:231
217992565517,33sleep00-21swapper/019:23:540
435721270,9sleep02195999cyclictest21:25:280
1091721130,3sleep110921-21ls23:10:181
249142580,2sleep024913-21latency20:55:220
322642490,3sleep1201rcuc/100:05:291
2195999411,13cyclictest22831-21ntp_kernel_pll_22:15:230
2195999394,13cyclictest81rcu_preempt20:07:370
2195999394,11cyclictest81rcu_preempt00:48:290
174162391,4sleep017546-21sort22:00:290
2195999361,12cyclictest109212ls23:10:190
2195999351,13cyclictest0-21swapper/023:22:290
2195999341,12cyclictest81rcu_preempt23:40:530
2195999341,10cyclictest81rcu_preempt19:47:330
188612341,29sleep118869-21iostat_ios22:05:221
170002341,30sleep117083-21memory22:00:221
101192341,4sleep19197-21/usr/sbin/munin20:15:271
318122331,5sleep10-21swapper/119:48:181
28962331,5sleep00-21swapper/021:23:310
2195999338,13cyclictest9418-21users00:30:300
2195999335,25cyclictest1974-21lldpad23:37:060
21959993311,7cyclictest4892-21hddtemp_smartct00:20:180
8622321,5sleep10-21swapper/122:45:091
295452321,9sleep00-21swapper/022:35:060
21959993222,6cyclictest7779-21grep23:00:290
8192310,8sleep02195999cyclictest00:10:160
80242311,5sleep10-21swapper/123:01:401
313762311,5sleep10-21swapper/121:12:281
31252311,5sleep10-21swapper/119:57:251
21960993122,6cyclictest22-21ksoftirqd/123:22:291
21959993112,14cyclictest22542chrt22:46:270
2195999311,11cyclictest81rcu_preempt21:47:060
21959993110,6cyclictest128182chrt20:25:000
187422311,26sleep118750-21open_files23:30:251
144882314,5sleep00-21swapper/021:55:050
9092304,3sleep00-21swapper/021:18:390
60472301,25sleep16130-21memory20:05:221
51972301,5sleep10-21swapper/120:04:081
2196099303,20cyclictest20792-21diskstats20:45:151
21960993022,5cyclictest22-21ksoftirqd/121:23:141
2195999304,4cyclictest81rcu_preempt23:05:280
2195999303,22cyclictest0-21swapper/000:05:120
21959993021,5cyclictest2627-21cat19:55:270
21959993019,6cyclictest9275-21wget20:15:110
2195999301,4cyclictest81rcu_preempt23:58:350
2195999301,4cyclictest81rcu_preempt23:52:270
2195999301,4cyclictest81rcu_preempt22:43:370
2195999301,4cyclictest81rcu_preempt21:36:350
2195999301,4cyclictest81rcu_preempt20:42:160
189292301,4sleep019011-21/usr/sbin/munin23:30:270
125672301,5sleep10-21swapper/120:22:301
57832291,5sleep10-21swapper/121:30:231
307812291,5sleep10-21swapper/100:03:321
306882291,5sleep00-21swapper/000:02:350
233142291,5sleep10-21swapper/123:44:061
2196099299,15cyclictest0-21swapper/120:35:291
2196099294,19cyclictest30152-21iostat_ios22:35:201
2196099293,19cyclictest24551-21diskstats20:55:141
21960992920,5cyclictest22-21ksoftirqd/122:25:431
21960992913,12cyclictest0-21swapper/120:25:191
2196099291,15cyclictest1037-21cron21:20:001
2195999299,15cyclictest162812chrt20:32:040
2195999295,3cyclictest81rcu_preempt19:32:440
2195999293,3cyclictest81rcu_preempt21:44:280
2195999292,22cyclictest15991-21df00:50:140
2195999292,14cyclictest7908-21iostat20:10:180
21959992920,5cyclictest21598-21cat20:45:290
21959992919,7cyclictest0-21swapper/022:10:110
2195999291,4cyclictest81rcu_preempt21:03:190
2195999291,10cyclictest0-21swapper/020:36:280
213472291,5sleep10-21swapper/123:38:251
196302291,5sleep00-21swapper/022:06:230
135912291,5sleep10-21swapper/123:16:011
11342291,5sleep00-21swapper/019:52:200
94472281,5sleep10-21swapper/100:30:401
4792281,5sleep10-21swapper/122:42:431
38152281,5sleep10-21swapper/100:15:531
300102281,5sleep10-21swapper/119:44:041
286722281,5sleep10-21swapper/123:56:181
277852281,5sleep10-21swapper/119:35:421
252702281,5sleep00-21swapper/023:49:560
252172281,5sleep10-21swapper/122:20:401
236852281,5sleep10-21swapper/120:50:501
236232281,5sleep10-21swapper/122:18:481
2196099287,17cyclictest0-21swapper/121:25:111
2196099283,19cyclictest5033-21diskstats22:55:161
21960992820,5cyclictest2221-21cron23:10:001
2195999283,16cyclictest0-21swapper/022:54:060
2195999281,13cyclictest11785-21awk00:40:010
21959992810,5cyclictest24752-21ntp_states22:20:240
21959992810,5cyclictest0-21swapper/019:37:310
202802281,5sleep10-21swapper/120:44:271
173872281,5sleep10-21swapper/123:26:141
141342281,5sleep00-21swapper/021:52:580
132472281,5sleep00-21swapper/000:40:570
125222281,4sleep112529-21iostat_ios00:40:211
124542281,5sleep10-21swapper/121:49:591
76822271,5sleep00-21swapper/000:26:470
75562271,4sleep10-21swapper/100:25:321
62822271,3sleep00-21swapper/022:58:160
45162271,5sleep10-21swapper/122:54:271
294842271,5sleep00-21swapper/021:07:210
271302271,5sleep10-21swapper/123:54:471
261822271,5sleep10-21swapper/119:33:331
2196099273,18cyclictest27974-21diskstats22:30:151
21960992718,6cyclictest22-21ksoftirqd/100:23:011
21960992717,6cyclictest22-21ksoftirqd/121:42:181
21960992715,7cyclictest15097-21iostat_ios21:55:221
2195999279,16cyclictest0-21swapper/000:19:120
2195999274,4cyclictest81rcu_preempt22:33:590
2195999271,4cyclictest81rcu_preempt21:32:460
2195999271,4cyclictest81rcu_preempt20:52:130
21959992712,6cyclictest0-21swapper/019:40:110
144632271,5sleep00-21swapper/020:27:420
21960992617,6cyclictest22-21ksoftirqd/121:53:071
2196099261,21cyclictest20171-21wget22:10:121
21959992617,6cyclictest16783-21needreboot23:25:230
313452251,5sleep00-21swapper/021:12:070
21960992517,5cyclictest22-21ksoftirqd/121:05:141
21960992516,5cyclictest22-21ksoftirqd/121:00:261
21960992510,12cyclictest0-21swapper/120:30:161
21959992517,5cyclictest26338-21basename22:25:180
2196099243,16cyclictest7267-21diskstats21:35:151
2196099243,16cyclictest32636-21hddtemp_smartct19:50:171
21960992414,6cyclictest24223-21latency23:45:201
21960992413,7cyclictest16304-21iostat00:50:201
2195999241,11cyclictest12558-21diskstats23:15:150
2196099232,17cyclictest14127-21diskstats00:45:141
21960992314,5cyclictest7421-21cut20:10:111
21959992311,8cyclictest3625-21aten_r4power_en20:00:130
2196099222,15cyclictest1582-21sed00:10:291
21960992211,7cyclictest114952chrt00:37:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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