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2026-07-11 - 22:45

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 all highest latencies:
System rack9slot4s (updated Sat Jul 11, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
262509911241087,30cyclictest28257-21munin-node07:30:001
261452654551,30sleep10-21swapper/107:24:301
259662578531,31sleep00-21swapper/007:22:370
303512550,4sleep10-21swapper/111:50:161
155442410,28sleep00-21swapper/008:20:010
218472400,8sleep02624999cyclictest10:00:260
218472400,8sleep02624999cyclictest10:00:260
3552380,3sleep0111rcuc/007:40:110
2625099372,15cyclictest19770-21fschecks_count08:30:141
2625099371,22cyclictest0-21swapper/110:18:341
47002361,31sleep14854-21sed10:40:291
26249993419,5cyclictest3-21ksoftirqd/008:43:480
26249993414,6cyclictest12557-21python09:35:280
78622331,9sleep00-21swapper/007:59:030
2625099333,17cyclictest0-21swapper/112:05:281
26250993314,7cyclictest8781-21sh12:20:001
26250993310,7cyclictest20588-21/usr/sbin/munin11:25:201
2624999339,12cyclictest3230-21taskset10:37:280
2624999339,12cyclictest2225-21dbus-daemon09:30:060
26249993324,5cyclictest2221-21cron08:39:590
26249993324,5cyclictest2221-21cron08:39:590
26249993318,5cyclictest3-21ksoftirqd/012:24:280
26249993317,5cyclictest3-21ksoftirqd/007:54:240
26249993316,6cyclictest3-21ksoftirqd/012:33:330
252852331,28sleep025357-21python11:35:280
2625099325,4cyclictest81rcu_preempt09:28:451
2624999329,20cyclictest28263-21cat07:30:000
2624999324,8cyclictest24197-21munin-run11:35:000
26249993217,4cyclictest3-21ksoftirqd/010:47:140
26249993217,4cyclictest3-21ksoftirqd/010:47:130
2624999321,14cyclictest0-21swapper/009:09:080
2624999321,14cyclictest0-21swapper/009:04:330
26249993211,10cyclictest0-21swapper/007:30:240
26249993210,11cyclictest3-21ksoftirqd/010:30:070
26249993210,11cyclictest3-21ksoftirqd/009:41:020
237612321,4sleep111564-21packagekitd11:30:411
58662311,5sleep10-21swapper/107:52:501
2625099318,9cyclictest2225-21dbus-daemon08:59:061
2625099315,4cyclictest81rcu_preempt11:49:321
2625099314,12cyclictest29627-21memory07:30:231
26250993112,5cyclictest155452cut08:20:001
26249993117,4cyclictest3-21ksoftirqd/008:01:480
26249993116,5cyclictest3-21ksoftirqd/009:15:150
26249993113,5cyclictest31139-21df07:35:140
26249993113,5cyclictest2703-21df07:45:160
26249993113,5cyclictest25507-21ntpdc10:10:250
2624999311,27cyclictest0-21swapper/012:25:090
2624999311,18cyclictest0-21swapper/012:00:270
2624999311,18cyclictest0-21swapper/008:15:000
180182311,4sleep118083-21users11:15:321
2625099305,4cyclictest81rcu_preempt07:46:221
26250993015,12cyclictest22-21ksoftirqd/112:35:231
2625099301,4cyclictest81rcu_preempt10:33:131
2625099301,16cyclictest18378-21chrt08:25:241
2624999303,23cyclictest0-21swapper/009:45:190
2624999302,16cyclictest2225-21dbus-daemon11:44:290
2624999302,14cyclictest18913-21munin-run09:55:000
26249993016,4cyclictest3-21ksoftirqd/008:55:490
26249993015,5cyclictest3-21ksoftirqd/011:45:050
26249993015,4cyclictest3-21ksoftirqd/010:21:430
26249993014,13cyclictest3-21ksoftirqd/010:29:530
26249993013,5cyclictest3-21ksoftirqd/010:41:300
26249993012,5cyclictest17284-21perl11:15:170
26249993012,5cyclictest15396-21ntpdc12:35:230
26249993011,7cyclictest17836-21df_inode08:25:130
26249993011,6cyclictest17306-21ntp_states12:40:250
26249993011,6cyclictest15948-21df08:20:130
2624999301,14cyclictest19063-21/usr/sbin/munin09:55:120
26249993010,7cyclictest15922-21mailstats11:10:270
202232301,5sleep00-21swapper/011:22:570
163252301,5sleep10-21swapper/111:11:381
113472301,5sleep00-21swapper/008:06:030
91782291,5sleep00-21swapper/009:26:430
35042291,5sleep10-21swapper/109:11:261
34402291,5sleep00-21swapper/009:10:470
298132290,8sleep12625099cyclictest10:21:001
266572291,5sleep10-21swapper/108:48:441
2625099295,4cyclictest81rcu_preempt11:03:471
2625099295,4cyclictest81rcu_preempt07:58:001
2625099294,9cyclictest30962-21iostat_ios10:25:221
2625099294,3cyclictest81rcu_preempt12:11:371
2625099294,18cyclictest13004-21diskstats12:30:171
2625099293,11cyclictest32435-21munin-run09:05:011
2625099291,15cyclictest32073-21cut11:55:131
2625099290,4cyclictest81rcu_preempt10:38:591
2624999299,5cyclictest3692-21grep12:05:170
2624999292,13cyclictest13903-21ntp_states11:05:260
26249992915,4cyclictest3-21ksoftirqd/010:52:110
26249992913,5cyclictest3-21ksoftirqd/011:51:460
2624999291,15cyclictest18678-21diskstats12:45:140
2624999291,15cyclictest11483-21diskstats11:00:140
215442291,5sleep10-21swapper/112:50:341
128372291,5sleep10-21swapper/109:35:431
107002291,5sleep10-21swapper/110:56:531
106062291,5sleep00-21swapper/010:55:520
9982281,5sleep00-21swapper/011:58:460
285062281,5sleep10-21swapper/108:53:261
277302281,5sleep10-21swapper/111:42:431
27242281,5sleep10-21swapper/112:01:331
2625099286,4cyclictest81rcu_preempt09:22:451
2625099285,4cyclictest81rcu_preempt10:07:061
2625099284,4cyclictest81rcu_preempt09:52:591
2625099283,19cyclictest9962-21diskstats09:30:151
26250992815,8cyclictest8435-21diskstats08:00:141
26250992811,13cyclictest2225-21dbus-daemon08:37:121
26250992811,13cyclictest2225-21dbus-daemon08:37:121
26249992817,7cyclictest0-21swapper/011:29:160
26249992811,4cyclictest27416-21ntp_states10:15:250
2624999281,13cyclictest6207-21sshd09:20:150
223982281,5sleep10-21swapper/110:02:131
223982281,5sleep10-21swapper/110:02:131
149082281,5sleep10-21swapper/109:42:321
135592281,4sleep113570-21smartctl11:05:181
122162281,5sleep10-21swapper/112:26:371
69842271,5sleep10-21swapper/110:47:131
69842271,5sleep10-21swapper/110:47:121
53422271,5sleep10-21swapper/109:16:021
2625099274,4cyclictest81rcu_preempt10:53:351
2625099274,17cyclictest10615-21iostat_ios08:05:201
2625099271,8cyclictest0-21swapper/112:45:161
2624999276,10cyclictest3-21ksoftirqd/010:06:520
26249992710,4cyclictest6223-21switchtime12:10:300
245222271,5sleep10-21swapper/108:41:051
171502271,5sleep10-21swapper/108:22:391
170002271,5sleep10-21swapper/109:49:501
16462271,4sleep10-21swapper/107:41:161
324312261,5sleep10-21swapper/107:38:421
264092261,4sleep10-21swapper/110:14:561
2625099268,5cyclictest40250irq/92-i91509:55:221
2625099263,9cyclictest0-21swapper/112:21:251
2625099263,7cyclictest429-21diskstats09:05:151
26250992617,6cyclictest22-21ksoftirqd/108:10:151
26250992617,5cyclictest18927-21cpuspeed_turbos11:20:121
26250992612,10cyclictest0-21swapper/112:40:261
2624999266,8cyclictest25466-21fschecks_time08:45:180
2624999262,13cyclictest8746-21taskset12:19:480
2624999261,16cyclictest0-21swapper/012:51:100
2624999261,14cyclictest19766-21cut08:30:150
2624999261,13cyclictest28222-21/usr/sbin/munin08:50:300
26250992414,6cyclictest24417-21cut11:35:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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