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2026-06-22 - 03:41

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 Mon Jun 22, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
246319912141205,6cyclictest0-21swapper/119:27:261
241362563516,31sleep00-21swapper/019:20:320
243182561517,29sleep10-21swapper/119:22:171
2463099193170,20cyclictest0-21swapper/019:27:270
240752500,8sleep12463199cyclictest22:10:301
2463099395,19cyclictest1161-21memory19:45:220
23762371,32sleep12432-21wget19:50:121
2463099369,8cyclictest0-21swapper/020:05:150
2463099351,22cyclictest12446-21/usr/sbin/munin20:15:170
2463099351,20cyclictest5576-21fschecks_time00:15:140
317352341,29sleep031774-21wc19:40:210
2463199349,13cyclictest40250irq/92-i91519:45:111
24631993425,6cyclictest17502-21fschecks_count21:55:141
24630993418,6cyclictest3-21ksoftirqd/022:56:270
24630993418,5cyclictest3-21ksoftirqd/023:07:540
24630993418,5cyclictest3-21ksoftirqd/022:29:140
24630993418,5cyclictest3-21ksoftirqd/000:04:440
24630993417,6cyclictest3-21ksoftirqd/023:53:250
2463199339,13cyclictest40250irq/92-i91521:45:151
2463099339,13cyclictest2115-21fschecks_time22:40:160
2463099333,14cyclictest14364-21seq23:10:560
24630993319,4cyclictest3-21ksoftirqd/000:38:510
24630993317,6cyclictest3-21ksoftirqd/020:02:120
24630993317,5cyclictest3-21ksoftirqd/021:03:310
24630993317,5cyclictest3-21ksoftirqd/021:03:300
2463099331,28cyclictest13485-21cut21:45:110
234172332,27sleep123452-21df_inode20:45:111
155732331,28sleep115582-21df_inode21:50:151
85262321,4sleep011564-21packagekitd00:22:320
4162321,4sleep0492-21fschecks_count21:10:160
266452321,27sleep126713-21hddtemp_smartct23:45:171
2463199321,4cyclictest81rcu_preempt20:36:591
2463199321,18cyclictest12375-21ntp_states21:40:251
2463099326,13cyclictest0-21swapper/023:45:290
2463099322,18cyclictest2225-21dbus-daemon20:12:580
24630993216,5cyclictest3-21ksoftirqd/023:37:070
24630993216,5cyclictest3-21ksoftirqd/021:27:550
2463099321,17cyclictest26426-21pidof22:20:000
137012321,27sleep113819-21timerwakeupswit00:35:281
76862311,26sleep17692-21diskstats22:55:141
2463199315,4cyclictest81rcu_preempt20:57:021
24631993123,5cyclictest26127-21threads20:50:291
2463199311,4cyclictest81rcu_preempt19:40:311
24630993116,5cyclictest3-21ksoftirqd/022:00:200
2463099311,4cyclictest81rcu_preempt20:58:360
24630993114,6cyclictest3-21ksoftirqd/019:30:170
24630993113,5cyclictest9893-21iostat_ios23:00:200
2463099311,18cyclictest28202-21taskset22:23:580
24630993110,11cyclictest3-21ksoftirqd/022:09:370
205632311,9sleep10-21swapper/122:02:501
297702301,5sleep10-21swapper/122:25:471
296062301,5sleep10-21swapper/123:52:551
2463199309,4cyclictest40250irq/92-i91500:20:161
2463199305,4cyclictest81rcu_preempt21:32:221
2463199301,8cyclictest22448-21/usr/sbin/munin23:35:171
2463199300,3cyclictest81rcu_preempt23:17:061
2463099309,10cyclictest3-21ksoftirqd/000:33:380
2463099308,4cyclictest81rcu_preempt23:55:200
2463099308,11cyclictest40250irq/92-i91500:25:170
2463099304,4cyclictest81rcu_preempt23:33:310
2463099302,15cyclictest19396-21/usr/sbin/munin20:35:230
2463099301,16cyclictest25904-21/usr/sbin/munin20:50:250
2463099301,15cyclictest19600-21grep00:50:290
24630993010,6cyclictest5723-21cron21:25:000
212202301,25sleep121229-21diskstats22:05:141
47532291,5sleep00-21swapper/000:12:320
2463199296,4cyclictest81rcu_preempt23:10:111
2463199296,4cyclictest81rcu_preempt19:36:131
2463199295,4cyclictest81rcu_preempt20:03:001
2463199294,19cyclictest3945-21diskstats22:45:141
2463199294,19cyclictest11404-21iostat_ios00:30:201
2463199293,19cyclictest9530-21iostat_ios00:25:211
2463199293,10cyclictest10483-21hddtemp_smartct20:10:171
2463199291,7cyclictest25487-21timerwakeupswit23:40:291
2463199291,4cyclictest81rcu_preempt23:00:201
2463199291,15cyclictest0-21swapper/119:56:181
2463099296,12cyclictest7988-21cstates21:30:120
2463099292,14cyclictest2541-21/usr/sbin/munin19:50:120
24630992911,5cyclictest6022-21hddtemp_smartct22:50:180
180232291,5sleep00-21swapper/000:48:080
177602291,5sleep10-21swapper/123:20:281
161082291,5sleep00-21swapper/021:50:280
160842291,5sleep00-21swapper/000:42:550
154482291,5sleep10-21swapper/120:24:401
139922291,24sleep014055-21df20:20:130
117322291,5sleep10-21swapper/120:15:011
288222281,5sleep10-21swapper/119:33:111
2463199287,4cyclictest81rcu_preempt21:16:291
2463199285,4cyclictest81rcu_preempt23:31:591
2463199283,9cyclictest5282-21users21:20:321
2463199283,4cyclictest81rcu_preempt00:15:541
2463199283,19cyclictest32166-21diskstats00:00:141
24631992819,5cyclictest2362-21cat00:05:311
24631992818,6cyclictest6088-21tr21:25:121
2463199281,7cyclictest19071-21fschecks_count23:25:141
2463199281,22cyclictest31051-21awk23:55:281
2463099289,6cyclictest2628-21iostat21:15:200
2463099288,10cyclictest3-21ksoftirqd/019:35:090
2463099286,13cyclictest0-21swapper/020:31:570
2463099282,14cyclictest32516-21diskstats22:35:150
2463099282,13cyclictest19103-21cut23:25:150
2463099281,7cyclictest0-21swapper/021:57:480
2463099281,14cyclictest31193-21hddtemp_smartct21:05:180
2463099281,14cyclictest11830-21df21:40:140
171502281,5sleep10-21swapper/120:27:521
166252281,5sleep00-21swapper/023:19:550
111222281,5sleep00-21swapper/021:37:370
96362271,5sleep10-21swapper/121:35:071
94312271,5sleep10-21swapper/120:05:541
47152271,5sleep10-21swapper/100:12:081
316512271,5sleep10-21swapper/122:30:491
2463199276,4cyclictest81rcu_preempt22:37:141
2463199276,4cyclictest81rcu_preempt00:46:461
2463199275,4cyclictest81rcu_preempt00:50:431
2463199274,4cyclictest81rcu_preempt22:21:171
2463199273,4cyclictest81rcu_preempt20:31:341
2463199272,21cyclictest0-21swapper/100:40:221
2463099278,6cyclictest16876-21grep20:25:310
2463099278,5cyclictest0-21swapper/020:48:370
2463099272,13cyclictest21579-21df_inode20:40:120
2463099272,12cyclictest30632-21df_inode22:30:140
2463099271,23cyclictest0-21swapper/023:42:060
2463099271,13cyclictest2883-21chrt00:07:440
2463199265,4cyclictest81rcu_preempt22:51:141
2463199263,4cyclictest81rcu_preempt20:41:011
2463199262,4cyclictest81rcu_preempt21:10:391
24631992617,5cyclictest31346-21cat21:05:221
2463099261,21cyclictest17185-21fschecks_count23:20:160
2463099261,13cyclictest5699-21taskset19:56:180
2463099261,13cyclictest5164-21chrt22:47:590
2463199254,18cyclictest0-21swapper/122:40:191
2463199252,4cyclictest81rcu_preempt22:16:121
24631992514,6cyclictest12263-21sort23:05:281
2463199251,11cyclictest29932-21timerandwakeup21:00:271
2463199251,11cyclictest29932-21timerandwakeup21:00:271
24630992415,6cyclictest3-21ksoftirqd/022:14:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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