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2026-04-02 - 07:26

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 376 highest latencies:
System rack9slot4s (updated Thu Apr 02, 2026 00:59:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
297109912691225,27cyclictest30609-21strings19:25:210
297119912151191,20cyclictest30609-21strings19:25:211
289462598545,32sleep10-21swapper/119:20:261
292652592494,30sleep00-21swapper/019:20:540
96922810,8sleep00-21swapper/000:35:050
157652720,4sleep1211ktimersoftd/123:00:221
305202700,5sleep1201rcuc/122:09:221
2971199704,18cyclictest22244-21iostat_ios22:00:201
2971199631,14cyclictest16496-21taskset20:11:491
2971199621,56cyclictest2003-21rs:main1
2971199621,14cyclictest18255-21taskset20:15:361
87102590,8sleep02971099cyclictest21:13:050
2971199599,10cyclictest0-21swapper/121:31:231
2971199594,9cyclictest31594-21iostat_ios23:50:201
29711995914,5cyclictest22-21ksoftirqd/123:21:381
29711995825,28cyclictest776-21/usr/sbin/munin20:55:301
180062580,2sleep10-21swapper/100:10:091
2971199574,10cyclictest18255-21/usr/sbin/munin22:30:311
2971199572,11cyclictest0-21swapper/121:47:201
2971199568,8cyclictest28935-21latency20:45:201
2971199564,7cyclictest23698-21ntp_states00:15:261
2971199562,15cyclictest20723-21iostat_ios21:25:211
2971199561,51cyclictest26450-21ssh22:38:161
2971199561,11cyclictest0-21swapper/123:47:361
2971199552,49cyclictest0-21swapper/123:44:531
2971199551,3cyclictest0-21swapper/122:51:351
2971199541,7cyclictest15734-21hddtemp_smartct21:20:171
45942530,8sleep02971099cyclictest23:22:140
2971199539,3cyclictest0-21swapper/123:32:441
2971199539,12cyclictest0-21swapper/100:20:491
2971199532,13cyclictest10896-21hddtemp_smartct21:15:191
29711995313,4cyclictest0-21swapper/122:57:231
29711995313,4cyclictest0-21swapper/120:32:031
29711995312,4cyclictest0-21swapper/119:30:381
2971199531,19cyclictest0-21swapper/123:38:381
2971199531,10cyclictest8755-21tail19:50:301
29711995310,3cyclictest0-21swapper/121:36:521
2971199528,11cyclictest0-21swapper/123:16:151
2971199526,12cyclictest0-21swapper/121:40:431
2971199526,12cyclictest0-21swapper/121:40:431
2971199524,8cyclictest2206-21dbus-daemon23:14:151
2971199522,6cyclictest3957-21hddtemp_smartct21:05:161
2971199522,17cyclictest0-21swapper/122:12:381
2971199522,11cyclictest5037-21munin-run22:50:001
2971199521,8cyclictest10114-21fschecks_count00:35:151
29711995214,5cyclictest15216-21seq22:25:581
29711995212,3cyclictest0-21swapper/100:51:531
2971199521,18cyclictest0-21swapper/122:18:071
2971199521,18cyclictest0-21swapper/122:18:061
2971199519,12cyclictest0-21swapper/100:08:421
2971199519,11cyclictest0-21swapper/121:11:341
2971199517,11cyclictest0-21swapper/121:55:581
2971199516,5cyclictest0-21swapper/100:28:061
2971199516,11cyclictest0-21swapper/123:27:241
2971199512,13cyclictest2906-21/usr/sbin/munin19:35:251
2971199511,17cyclictest4588-21sensors23:55:281
197152510,5sleep119709-21ssh00:45:151
2971199507,3cyclictest0-21swapper/100:00:551
2971199504,9cyclictest26982-21iostat_ios20:40:191
2971199502,7cyclictest0-21swapper/120:50:211
2971199502,16cyclictest0-21swapper/123:06:551
2971199502,15cyclictest0-21swapper/122:20:471
2971199501,17cyclictest0-21swapper/121:51:281
2971199501,14cyclictest7262-21taskset19:48:321
2971199501,14cyclictest0-21swapper/100:31:201
2971199494,8cyclictest25179-21memory20:35:231
2971199492,15cyclictest4749-21/usr/sbin/munin19:40:251
2971199484,7cyclictest2318-21ntp_states21:00:251
2971199482,15cyclictest15510-21/usr/sbin/munin00:40:221
2971199482,14cyclictest14024-21/usr/sbin/munin20:05:241
2971199481,15cyclictest10709-21/usr/sbin/munin19:55:301
29711994711,6cyclictest2206-21dbus-daemon20:25:361
29711994711,6cyclictest2206-21dbus-daemon20:25:351
2971199471,15cyclictest19308-21/usr/sbin/munin20:20:171
29711994710,6cyclictest2206-21dbus-daemon20:01:501
2971099433,36cyclictest0-21swapper/022:07:590
151572430,5sleep041ktimersoftd/000:40:170
2971099419,28cyclictest0-21swapper/021:53:160
2971099408,28cyclictest0-21swapper/022:53:150
29710994010,9cyclictest31991-21gzip23:50:270
29710993911,12cyclictest30497-21gdbus23:39:310
19132390,4sleep00-21swapper/022:12:550
2971099386,5cyclictest81rcu_preempt23:00:280
29710993812,13cyclictest21979-21ssh00:47:360
291282381,33sleep029138-21ssh23:47:500
2971099379,4cyclictest0-21swapper/021:39:270
29710993711,9cyclictest0-21swapper/023:41:190
29710993711,5cyclictest236442basename00:50:080
2971099366,19cyclictest0-21swapper/000:10:200
2971099365,27cyclictest3859-21fschecks_count21:05:160
2971099361,13cyclictest21266-21/usr/sbin/munin21:25:280
2971099352,29cyclictest0-21swapper/021:49:150
2971099351,5cyclictest6875-21ssh22:17:560
2971099351,5cyclictest6875-21ssh22:17:560
67092341,5sleep00-21swapper/019:45:290
2971099349,4cyclictest81rcu_preempt22:45:270
2971099343,5cyclictest0-21swapper/020:55:360
2971099342,5cyclictest81rcu_preempt21:15:070
2971099342,29cyclictest0-21swapper/022:37:550
29710993419,8cyclictest21895-21diskstats22:00:150
2971099341,5cyclictest29468-21ssh22:40:350
2971099341,29cyclictest15754-21ssh00:07:150
2971099341,21cyclictest30109-21/usr/sbin/munin23:15:200
24382340,8sleep02971099cyclictest21:00:250
141322341,29sleep014145-21sh22:59:150
2971099333,4cyclictest81rcu_preempt21:55:340
2971099332,4cyclictest81rcu_preempt00:26:470
2971099331,30cyclictest0-21swapper/020:11:150
2971099331,19cyclictest11437-21grep23:30:010
2971099329,6cyclictest11155-21cron19:59:590
2971099325,24cyclictest0-21swapper/022:22:000
2971099324,4cyclictest81rcu_preempt23:06:470
29710993225,5cyclictest0-21swapper/020:23:550
2971099321,5cyclictest81rcu_preempt22:32:010
2971099321,4cyclictest81rcu_preempt00:30:540
2971099321,29cyclictest0-21swapper/020:40:350
2971099321,19cyclictest25545-21/usr/sbin/munin20:35:300
78302311,27sleep07842-21ssh23:59:490
304342311,25sleep030438-21diskstats20:50:140
2971099317,13cyclictest16320-21mailstats21:20:280
2971099316,4cyclictest81rcu_preempt21:41:540
2971099316,4cyclictest81rcu_preempt21:41:530
2971099312,4cyclictest81rcu_preempt23:12:010
2971099311,5cyclictest1968-21lldpad23:33:570
2971099311,4cyclictest81rcu_preempt22:28:070
290672311,5sleep00-21swapper/000:20:330
2971099305,4cyclictest81rcu_preempt19:36:000
2971099301,4cyclictest81rcu_preempt20:34:230
2971099301,4cyclictest81rcu_preempt00:15:330
176982301,5sleep017769-21grep20:15:230
2971099291,15cyclictest32108-21iostat19:30:040
2971099291,14cyclictest8769-21sed19:50:300
29710992910,6cyclictest9672-21grep00:00:290
296192291,5sleep00-21swapper/020:46:200
267142291,5sleep00-21swapper/021:31:040
36752281,5sleep00-21swapper/019:40:020
2971099285,6cyclictest22083-21seq20:26:090
2971099285,6cyclictest22083-21seq20:26:090
2971099282,13cyclictest12979-21seq20:04:180
29710992810,5cyclictest13241-21wget20:05:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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