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2026-06-24 - 18:36

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 792 highest latencies:
System rack9slot4s (updated Wed Jun 24, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
259719912801228,31cyclictest6878-21users09:20:311
259719911901180,7cyclictest0-21swapper/107:26:591
259709911011071,18cyclictest7626-21smartctl10:50:180
242032563515,31sleep10-21swapper/107:20:101
256552503456,31sleep00-21swapper/007:22:140
2597099226201,10cyclictest0-21swapper/009:20:310
2597099175144,14cyclictest0-21swapper/007:27:000
2110221380,8sleep12597199cyclictest11:25:231
259719910899,6cyclictest0-21swapper/110:50:181
364721010,3sleep12597199cyclictest12:05:221
311872780,6sleep00-21swapper/007:35:210
30852530,7sleep02597099cyclictest07:45:270
39142470,6sleep13910-21munin-run07:50:011
25970994122,6cyclictest3-21ksoftirqd/008:21:390
25970994023,6cyclictest3-21ksoftirqd/011:22:570
25970993922,6cyclictest3-21ksoftirqd/011:04:530
25970993922,6cyclictest3-21ksoftirqd/009:16:420
25970993922,6cyclictest3-21ksoftirqd/007:44:350
18502390,4sleep00-21swapper/012:00:260
25970993821,6cyclictest3-21ksoftirqd/012:23:530
25970993821,5cyclictest3-21ksoftirqd/010:03:220
25970993721,5cyclictest3-21ksoftirqd/011:09:050
25970993720,6cyclictest3-21ksoftirqd/009:09:440
225612370,4sleep02597099cyclictest10:05:110
25970993620,6cyclictest3-21ksoftirqd/009:10:060
25970993620,5cyclictest3-21ksoftirqd/012:18:090
25970993613,7cyclictest3-21ksoftirqd/008:10:400
53242351,4sleep05480-21/usr/sbin/munin10:45:110
25970993513,11cyclictest3-21ksoftirqd/011:19:080
25970993418,6cyclictest3-21ksoftirqd/011:47:460
25970993418,5cyclictest3-21ksoftirqd/009:04:550
25970993417,6cyclictest3-21ksoftirqd/010:20:570
25970993413,4cyclictest17245-21/usr/sbin/munin08:25:290
2597199331,12cyclictest167052cpuspeed_turbos11:15:121
25970993318,5cyclictest3-21ksoftirqd/012:44:550
25970993318,5cyclictest3-21ksoftirqd/010:34:560
25970993317,5cyclictest3-21ksoftirqd/007:51:340
25970993316,5cyclictest3-21ksoftirqd/009:45:040
2597099329,5cyclictest11202-21latency_hist09:35:010
25970993218,5cyclictest3-21ksoftirqd/010:16:180
25970993217,5cyclictest3-21ksoftirqd/012:26:130
25970993217,5cyclictest3-21ksoftirqd/009:36:520
25970993217,5cyclictest3-21ksoftirqd/008:42:360
25970993217,5cyclictest3-21ksoftirqd/008:36:340
25970993216,6cyclictest3-21ksoftirqd/012:46:390
25970993216,5cyclictest3-21ksoftirqd/007:59:360
98682311,4sleep19917-21users12:20:301
260632311,5sleep10-21swapper/108:45:411
25971993120,7cyclictest1569-21sh09:10:001
2597199311,11cyclictest81rcu_preempt10:23:471
25971993111,11cyclictest3669-21diskstats10:40:151
2597099312,25cyclictest8121-21df08:00:130
25970993117,4cyclictest3-21ksoftirqd/011:39:380
25970993116,5cyclictest3-21ksoftirqd/010:43:540
89032301,5sleep00-21swapper/009:26:570
53522301,5sleep10-21swapper/107:50:381
2597199307,9cyclictest2225-21dbus-daemon09:35:011
2597199304,4cyclictest81rcu_preempt09:51:331
2597199304,19cyclictest4008-21diskstats09:15:151
2597199301,4cyclictest81rcu_preempt10:04:081
25970993015,5cyclictest3-21ksoftirqd/011:59:440
25970993015,5cyclictest3-21ksoftirqd/010:26:460
25970993013,6cyclictest3-21ksoftirqd/012:12:150
25970993013,5cyclictest0-21swapper/009:50:140
25970993012,6cyclictest2205-21ntp_states10:35:240
2597099301,15cyclictest13964-21/usr/sbin/munin09:40:240
220012301,5sleep00-21swapper/011:29:570
205402301,25sleep120555-21iostat12:50:191
204872301,6sleep00-21swapper/008:31:280
38332291,5sleep00-21swapper/012:05:270
309902291,5sleep10-21swapper/111:50:391
275862291,5sleep00-21swapper/011:44:150
267812291,4sleep126845-21processes11:40:261
2597199297,4cyclictest81rcu_preempt08:29:241
2597199295,4cyclictest81rcu_preempt12:49:041
2597199294,4cyclictest81rcu_preempt12:11:261
2597199293,4cyclictest81rcu_preempt09:49:411
2597199293,4cyclictest81rcu_preempt07:55:451
25971992921,5cyclictest14719-21sed08:15:291
2597199291,4cyclictest81rcu_preempt09:03:431
2597199291,4cyclictest81rcu_preempt08:51:511
2597199291,12cyclictest3286-21runrttasks11:49:571
25970992914,5cyclictest3-21ksoftirqd/010:55:370
25970992914,5cyclictest3-21ksoftirqd/008:48:430
2597099291,14cyclictest29839-21grep07:30:280
254802291,5sleep10-21swapper/111:37:061
237432291,5sleep00-21swapper/011:33:350
237432291,5sleep00-21swapper/011:33:350
216292291,5sleep00-21swapper/012:54:350
201672291,5sleep00-21swapper/009:56:530
111162291,5sleep00-21swapper/008:06:510
93332281,5sleep10-21swapper/108:02:481
281692281,5sleep00-21swapper/008:53:030
2597199286,4cyclictest81rcu_preempt10:30:141
2597199284,17cyclictest0-21swapper/111:12:191
2597199283,19cyclictest19057-21diskstats09:55:141
2597199283,18cyclictest7352-21iostat_ios12:15:191
25971992818,6cyclictest12646-21cat08:10:281
2597199281,4cyclictest81rcu_preempt12:42:511
2597199281,4cyclictest81rcu_preempt10:49:431
2597199281,14cyclictest22533-21/usr/sbin/munin10:05:181
2597099285,8cyclictest3-21ksoftirqd/011:51:380
2597099285,13cyclictest25968-21cyclictest11:13:480
25970992813,5cyclictest3-21ksoftirqd/010:12:040
2597099281,15cyclictest15491-21/usr/sbin/munin12:35:280
243772281,5sleep10-21swapper/108:42:441
134642281,5sleep00-21swapper/008:15:100
120002281,5sleep10-21swapper/112:27:311
313762271,5sleep10-21swapper/110:25:521
300552271,4sleep10-21swapper/108:58:101
2597199277,4cyclictest81rcu_preempt11:59:261
2597199275,4cyclictest81rcu_preempt12:33:131
2597199273,5cyclictest40250irq/92-i91507:35:291
2597199273,4cyclictest81rcu_preempt11:03:551
2597199273,17cyclictest22256-21users08:35:311
2597199272,5cyclictest40250irq/92-i91511:20:231
2597199270,4cyclictest81rcu_preempt11:31:251
2597199270,4cyclictest81rcu_preempt11:31:251
24572271,5sleep10-21swapper/112:02:001
205872271,5sleep10-21swapper/108:32:331
158282271,5sleep10-21swapper/112:38:171
145432271,5sleep10-21swapper/109:41:501
141062271,5sleep10-21swapper/111:06:041
113012271,5sleep10-21swapper/108:08:461
110442271,4sleep10-21swapper/109:34:421
106402271,5sleep10-21swapper/110:59:171
2597199266,17cyclictest15681-21grep08:20:141
2597199262,9cyclictest3286-21runrttasks09:26:571
2597199262,10cyclictest25006-21iostat_ios10:10:191
2597199261,9cyclictest1654-21df_inode10:35:131
2597099262,20cyclictest28804-21df08:55:130
2597099261,16cyclictest0-21swapper/012:31:430
16172261,5sleep10-21swapper/107:43:541
2597199259,5cyclictest40250irq/92-i91507:30:291
25971992515,6cyclictest27814-21runrttasks10:18:001
25971992515,6cyclictest1745-21cut09:10:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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