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2026-05-16 - 20:06

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 May 16, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300539911991154,41cyclictest30629-21grep07:25:160
300549911701140,26cyclictest30486-21df_inode07:25:141
298362576531,30sleep10-21swapper/107:23:181
296542571524,32sleep00-21swapper/007:21:230
59162840,5sleep05872-21apt-get07:44:410
40872710,8sleep03005399cyclictest11:55:230
164972520,3sleep041ktimersoftd/008:10:250
203592470,7sleep13005499cyclictest12:40:111
30053993819,6cyclictest18782-21sed08:15:300
3005399372,23cyclictest25421-21python11:25:260
91832351,30sleep09245-21/usr/sbin/munin07:50:280
276892351,31sleep027844-21unixbench_multi10:05:300
246762348,22sleep10-21swapper/108:32:221
159092340,7sleep03005399cyclictest12:25:300
30054993324,6cyclictest8025-21/usr/sbin/munin10:40:191
3005399334,26cyclictest3-21ksoftirqd/012:35:410
30053993317,5cyclictest3-21ksoftirqd/011:33:540
30053993312,5cyclictest30335-21runrttasks08:47:240
227052331,28sleep122784-21iostat12:45:181
138422331,4sleep113962-21hddtemp_smartct09:30:171
91672321,9sleep00-21swapper/010:44:450
3005399322,16cyclictest15717-21/usr/sbin/munin11:00:230
30053993212,6cyclictest10337-21df_inode07:55:150
30053993210,11cyclictest12673-21taskset10:52:070
261152321,4sleep126136-21munin-run11:30:011
3005499316,11cyclictest40250irq/92-i91509:40:161
30054993113,14cyclictest22-21ksoftirqd/112:12:371
3005399314,14cyclictest26250-21sshd10:02:400
3005399313,15cyclictest0-21swapper/010:30:260
3005399312,5cyclictest81rcu_preempt12:45:120
3005399312,15cyclictest1560-21/usr/sbin/munin07:30:310
30053993117,4cyclictest3-21ksoftirqd/010:23:320
30053993116,5cyclictest3-21ksoftirqd/008:44:390
30053993116,4cyclictest3-21ksoftirqd/007:48:320
30053993113,5cyclictest7944-21ntp_states12:05:250
3005399311,20cyclictest0-21swapper/011:42:180
226802311,5sleep10-21swapper/109:54:481
69362301,5sleep10-21swapper/112:04:511
320682301,5sleep10-21swapper/110:19:351
3005499305,4cyclictest81rcu_preempt11:08:421
3005499305,4cyclictest81rcu_preempt10:34:121
3005499305,4cyclictest81rcu_preempt08:48:051
30054993022,5cyclictest26562-21df11:30:131
30054993021,5cyclictest2748-21latency09:00:211
3005499301,4cyclictest81rcu_preempt08:03:311
3005499301,4cyclictest81rcu_preempt07:31:271
30053993013,13cyclictest14122-21runrttasks08:05:160
3005399301,27cyclictest0-21swapper/008:29:380
3005399301,26cyclictest0-21swapper/009:50:080
3005399301,15cyclictest20294-21sed09:45:290
3005399301,15cyclictest19067-21grep11:10:130
314072291,5sleep10-21swapper/111:41:121
3005499295,4cyclictest81rcu_preempt08:27:591
3005499293,24cyclictest0-21swapper/108:21:541
3005499293,19cyclictest23162-21diskstats09:55:131
3005499292,12cyclictest2225-21dbus-daemon07:51:401
30054992920,6cyclictest6251-21runrttasks07:45:011
30054992919,6cyclictest6360-21cut09:10:171
30054992915,8cyclictest18692-21diskstats12:35:141
30054992915,7cyclictest14121-21diskstats08:05:161
3005499291,4cyclictest81rcu_preempt11:45:471
3005399298,7cyclictest28666-21wget11:35:180
3005399298,6cyclictest9385-21grep12:10:150
3005399293,13cyclictest0-21swapper/010:35:170
3005399292,15cyclictest0-21swapper/008:57:260
30053992915,4cyclictest3-21ksoftirqd/008:39:410
30053992914,5cyclictest3-21ksoftirqd/009:42:370
30053992913,6cyclictest3-21ksoftirqd/009:14:420
30053992912,6cyclictest3-21ksoftirqd/008:52:370
3005399291,14cyclictest15120-21runrttasks09:34:220
3005399291,14cyclictest11565-21gdbus11:07:320
219772291,5sleep00-21swapper/011:16:120
219292291,5sleep10-21swapper/111:15:421
199602291,25sleep019971-21http_loadtime08:20:170
145182291,5sleep00-21swapper/010:56:500
144522291,5sleep10-21swapper/110:56:081
142772291,5sleep00-21swapper/012:22:540
119482291,24sleep011988-21aten_r4power_en08:00:120
113022291,5sleep10-21swapper/109:23:441
106602291,5sleep10-21swapper/110:45:451
55182281,5sleep10-21swapper/109:07:251
47992281,5sleep10-21swapper/111:57:191
38022281,5sleep10-21swapper/107:37:411
3005499285,4cyclictest81rcu_preempt09:36:531
3005499284,4cyclictest81rcu_preempt12:30:021
3005499284,18cyclictest6897-21iostat_ios07:45:211
3005499284,17cyclictest22826-21diskstats11:20:151
3005499283,9cyclictest15303-21diskstats11:00:151
3005499283,4cyclictest81rcu_preempt12:28:251
3005499282,12cyclictest3286-21runrttasks09:29:091
30054992812,5cyclictest40250irq/92-i91510:35:271
3005499281,14cyclictest302292sleep110:15:001
3005499281,14cyclictest19010-21taskset08:17:071
3005399289,4cyclictest1194-21ls11:49:590
3005399288,8cyclictest20374-21tr12:40:110
3005399287,12cyclictest0-21swapper/009:37:340
3005399282,13cyclictest5536-21diskstats12:00:130
3005399282,13cyclictest3200-21/usr/sbin/munin09:00:290
3005399282,13cyclictest17871-21taskset12:31:120
30053992811,5cyclictest9635-21cat09:20:010
3005399281,14cyclictest11565-21gdbus12:16:100
3005399281,13cyclictest10540-21tail10:45:290
297262281,5sleep10-21swapper/111:38:331
247312281,5sleep00-21swapper/008:32:570
14512281,5sleep10-21swapper/108:55:341
144262281,5sleep10-21swapper/112:24:281
14412281,5sleep10-21swapper/110:23:531
132702281,5sleep00-21swapper/009:29:390
113392281,5sleep10-21swapper/107:55:401
110732281,4sleep00-21swapper/009:21:180
33722271,5sleep10-21swapper/110:28:121
323542271,5sleep10-21swapper/108:53:551
3005499274,7cyclictest8113-21diskstats09:15:151
30054992719,5cyclictest28208-21unixbench_singl08:40:281
30054992717,6cyclictest24677-21/usr/sbin/munin12:50:201
3005399272,13cyclictest0-21swapper/011:50:210
30053992712,5cyclictest3-21ksoftirqd/011:22:040
30053992711,4cyclictest40250irq/92-i91510:15:020
27852271,4sleep10-21swapper/111:51:421
266932271,5sleep10-21swapper/108:38:511
254372271,4sleep00-21swapper/012:51:230
243732271,5sleep00-21swapper/009:57:520
170612271,5sleep10-21swapper/108:11:251
3005499268,6cyclictest2225-21dbus-daemon12:15:481
30054992617,6cyclictest22-21ksoftirqd/109:46:441
3005399261,13cyclictest5161-21timerandwakeup09:05:300
3005399261,13cyclictest11565-21gdbus10:14:080
3005399261,12cyclictest2632-21proc_pri10:25:260
3005499253,8cyclictest11834-21iostat_ios10:50:201
3005499253,7cyclictest19049-21diskstats11:10:131
3005499253,6cyclictest7406-21df_inode12:05:141
30054992516,6cyclictest22-21ksoftirqd/110:08:501
30054992513,8cyclictest24820-21aten_r4power_en10:00:121
30053992517,5cyclictest3-21ksoftirqd/007:38:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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