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2026-07-13 - 01:35

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 Sun Jul 12, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
213339911791145,30cyclictest23198-21/usr/sbin/munin07:30:011
204192797748,32sleep10-21swapper/107:20:261
209352564517,31sleep00-21swapper/007:21:240
2133299230177,34cyclictest23306-21munin-node07:30:010
1055221270,8sleep02133299cyclictest12:35:270
2747221110,7sleep02133299cyclictest07:38:140
69302660,21sleep03-21ksoftirqd/011:00:210
30932450,7sleep12133399cyclictest10:50:221
279162430,6sleep02133299cyclictest10:30:210
58502420,5sleep0111rcuc/009:30:300
80282361,31sleep02401-21NetworkManager09:36:540
21333993619,6cyclictest22-21ksoftirqd/111:59:281
21333993619,6cyclictest22-21ksoftirqd/110:00:511
21333993619,6cyclictest22-21ksoftirqd/108:22:081
2133299361,5cyclictest81rcu_preempt08:00:160
21333993520,5cyclictest22-21ksoftirqd/108:55:441
21333993519,6cyclictest22-21ksoftirqd/111:51:581
21333993517,6cyclictest22-21ksoftirqd/109:11:031
21333993419,5cyclictest22-21ksoftirqd/112:32:201
21333993418,6cyclictest22-21ksoftirqd/108:37:381
181492340,6sleep12133399cyclictest10:05:131
21333993317,6cyclictest22-21ksoftirqd/109:09:381
21333993316,6cyclictest22-21ksoftirqd/111:38:511
21333993316,6cyclictest22-21ksoftirqd/109:25:421
2133299336,13cyclictest27672-21/usr/sbin/munin11:55:230
2133299332,15cyclictest28262-21/usr/sbin/munin09:05:180
21332993310,10cyclictest0-21swapper/011:08:140
295902321,4sleep129652-21ntpq12:00:231
21333993215,6cyclictest22-21ksoftirqd/111:02:521
21332993211,8cyclictest13226-21iostat_ios08:25:200
24932311,3sleep111565-21gdbus09:23:481
240742311,26sleep00-21swapper/007:30:120
21333993117,4cyclictest22-21ksoftirqd/110:46:321
21333993116,5cyclictest22-21ksoftirqd/112:05:071
21333993115,5cyclictest22-21ksoftirqd/111:06:481
21333993112,14cyclictest2695-21snmpd09:58:211
2133299314,19cyclictest0-21swapper/012:34:040
2133299312,14cyclictest25805-21/usr/sbin/munin09:00:280
2133299311,15cyclictest8809-21diskstats09:40:160
2133399306,4cyclictest81rcu_preempt09:17:171
2133399305,4cyclictest81rcu_preempt09:44:041
21333993014,6cyclictest22-21ksoftirqd/110:43:461
21333993013,6cyclictest22-21ksoftirqd/107:56:381
21333993010,6cyclictest0-21swapper/109:50:381
2133299307,5cyclictest16770-21sshd12:52:000
2133299306,4cyclictest40250irq/92-i91512:20:260
2133299304,18cyclictest0-21swapper/008:42:110
2133299304,18cyclictest0-21swapper/008:06:520
21332993019,7cyclictest25755-21sort11:50:220
2133299301,4cyclictest81rcu_preempt12:06:140
2133299301,4cyclictest81rcu_preempt09:50:530
21332993011,7cyclictest7389-21fschecks_time08:10:180
21332993011,6cyclictest30823-21users09:10:290
2133299301,15cyclictest21671-21/usr/sbin/munin10:15:210
2133299301,13cyclictest15168-21latency08:30:210
21332993010,16cyclictest16666-21mailstats11:25:260
21332993010,12cyclictest0-21swapper/007:49:090
2133299300,4cyclictest81rcu_preempt08:57:130
8572291,5sleep00-21swapper/009:20:020
73692291,5sleep00-21swapper/012:27:170
4782291,5sleep00-21swapper/009:17:540
34862291,24sleep03553-21memory09:25:210
244972291,5sleep00-21swapper/011:45:360
228802291,5sleep00-21swapper/011:43:190
228122291,5sleep10-21swapper/111:42:381
2133399297,6cyclictest40250irq/92-i91512:10:251
2133399296,4cyclictest81rcu_preempt09:34:021
2133399296,4cyclictest81rcu_preempt08:41:221
2133399294,8cyclictest22-21ksoftirqd/108:00:161
2133399294,19cyclictest10627-21iostat_ios11:10:201
2133399293,4cyclictest81rcu_preempt12:36:091
2133399293,10cyclictest12123-21cpuspeed_turbos11:15:121
2133399292,14cyclictest0-21swapper/112:51:591
21333992920,5cyclictest11853-21df12:40:141
21333992913,6cyclictest22-21ksoftirqd/107:47:061
21333992911,4cyclictest25802-21fschecks_count10:25:141
2133299299,6cyclictest1553-21grep10:45:280
2133299295,4cyclictest81rcu_preempt11:12:400
2133299295,12cyclictest12104-21expr11:15:130
2133299294,18cyclictest336-21python07:50:270
2133299294,16cyclictest0-21swapper/011:30:490
2133299293,4cyclictest81rcu_preempt08:18:430
2133299293,18cyclictest0-21swapper/012:18:180
2133299292,14cyclictest1498-21df_inode07:55:140
2133299291,20cyclictest0-21swapper/010:06:020
21332992911,6cyclictest0-21swapper/010:10:210
2133299291,10cyclictest0-21swapper/009:45:260
154972291,5sleep00-21swapper/009:56:180
130072291,5sleep00-21swapper/012:42:090
307062281,4sleep00-21swapper/010:37:570
292992281,5sleep00-21swapper/007:42:330
268252281,5sleep00-21swapper/010:26:350
248262281,5sleep10-21swapper/111:49:021
2133399287,8cyclictest25327-21seq07:30:521
2133399286,4cyclictest81rcu_preempt12:20:581
2133399286,4cyclictest81rcu_preempt10:58:231
2133399283,4cyclictest81rcu_preempt10:30:441
2133399282,8cyclictest15169-21latency08:30:211
21333992812,6cyclictest22-21ksoftirqd/109:46:391
21333992812,6cyclictest22-21ksoftirqd/108:14:551
2133399281,13cyclictest27696-21ls07:40:001
21333992810,5cyclictest22-21ksoftirqd/108:07:201
2133299286,10cyclictest0-21swapper/010:50:080
2133299283,16cyclictest0-21swapper/010:40:380
2133299282,11cyclictest0-21swapper/012:14:000
2133299281,23cyclictest18091-21cron08:40:000
2133299281,18cyclictest0-21swapper/008:51:090
21332992811,5cyclictest14094-21uname12:45:210
2133299281,13cyclictest29592-21/usr/sbin/munin12:00:230
21332992810,6cyclictest20441-21df_inode08:45:140
208972281,5sleep00-21swapper/011:37:280
148952281,5sleep10-21swapper/112:47:001
122322281,5sleep00-21swapper/008:22:370
103142281,5sleep10-21swapper/108:17:241
10122280,8sleep12133399cyclictest07:54:461
80092271,5sleep10-21swapper/109:36:431
58252271,5sleep00-21swapper/010:57:150
217232271,4sleep10-21swapper/108:48:331
2133399274,8cyclictest6518-21iostat_ios12:25:211
2133399272,10cyclictest22322-21df_inode08:50:151
2133399271,7cyclictest20457-21latency10:10:211
2133399271,14cyclictest14559-21strings11:20:241
2133399271,13cyclictest22407-21grep10:15:231
2133399271,12cyclictest26193-21fschecks_count09:00:161
140432271,5sleep10-21swapper/108:26:581
2133399264,7cyclictest28429-21iostat_ios07:40:201
2133399263,17cyclictest23871-21diskstats10:20:161
21333992616,6cyclictest22-21ksoftirqd/110:39:051
2133399261,12cyclictest2225-21dbus-daemon11:32:031
2133299269,6cyclictest16548-21wget10:00:190
2133299269,6cyclictest14090-21df11:20:140
2133299262,17cyclictest23858-21df10:20:160
2133399253,4cyclictest81rcu_preempt11:26:351
2133399242,6cyclictest2369-21fschecks_count12:15:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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