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2026-06-19 - 06:18

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 Fri Jun 19, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271599911851160,11cyclictest0-21swapper/019:28:210
266802575518,40sleep00-21swapper/019:20:320
267332563518,29sleep10-21swapper/119:21:051
2716099180172,6cyclictest0-21swapper/119:28:211
2929121190,2sleep129287-21cron20:55:001
101922430,3sleep1211ktimersoftd/120:01:591
27159993714,12cyclictest13564-21munin-run23:04:590
27159993616,7cyclictest2980-21ls19:45:010
75322341,29sleep07608-21date00:15:010
27160993323,5cyclictest0-21swapper/121:20:281
27159993317,5cyclictest8527-21ntp_states00:15:250
27159993316,6cyclictest24124-21python23:30:270
27159993316,6cyclictest22853-21users22:00:290
27159993316,6cyclictest12460-21df_inode21:35:130
27159993315,6cyclictest24107-21df_inode20:40:120
27159993315,6cyclictest20711-21python21:55:290
186202330,4sleep181rcu_preempt21:50:221
37762321,26sleep10-21swapper/122:36:251
2715999324,11cyclictest0-21swapper/020:38:140
27159993216,5cyclictest31280-21df22:25:130
27159993215,6cyclictest3400-21df19:45:110
27159993215,6cyclictest2004-21cut00:00:110
27159993215,6cyclictest14988-21iostat20:15:180
27159993214,6cyclictest27289-21aten_r4power_po22:15:110
27159993214,5cyclictest11198-21users22:55:300
27159993212,11cyclictest0-21swapper/023:23:380
18602321,5sleep00-21swapper/022:32:100
2716099312,25cyclictest111-21usb-storage19:36:131
27160993120,8cyclictest15351-21sshd23:09:171
27159993115,6cyclictest11565-21gdbus23:25:580
27159993115,5cyclictest14364-21diskstats21:40:140
27159993114,6cyclictest3229-21ntp_states22:35:260
27159993114,5cyclictest9019-21irqstats21:25:220
27159993114,5cyclictest8329-21latency_hist21:25:000
27159993114,5cyclictest25472-21perl23:35:170
2715999311,10cyclictest0-21swapper/000:22:360
27159993110,7cyclictest18287-21/usr/sbin/munin23:15:240
21282311,25sleep12182-21grep19:40:271
188922311,5sleep10-21swapper/123:17:031
157182311,5sleep10-21swapper/120:15:581
135812311,4sleep113629-21df00:30:121
2715999307,12cyclictest1902-21ls00:00:010
2715999302,24cyclictest0-21swapper/000:40:310
27159993015,4cyclictest27385-21hddtemp_smartct23:40:180
27159993015,4cyclictest27385-21hddtemp_smartct23:40:180
27159993014,5cyclictest3286-21runrttasks23:10:540
27159993014,5cyclictest11795-21fschecks_count00:25:160
27159993013,6cyclictest11009-21grep20:05:160
27159993013,5cyclictest7166-21diskstats19:55:140
27159993012,7cyclictest0-21swapper/021:10:290
27159993012,6cyclictest13727-21unixbench_multi20:10:270
27159993012,5cyclictest10448-21cpu21:30:120
2715999301,24cyclictest29227-21taskset20:54:220
27159993012,10cyclictest0-21swapper/023:52:290
27159993011,4cyclictest21764-21idleruntime-cro20:35:000
2715999301,12cyclictest32745-21runrttasks21:01:430
27159993010,6cyclictest1795-21swap21:05:280
27159993010,11cyclictest0-21swapper/022:51:230
23552301,5sleep10-21swapper/121:08:291
226092301,5sleep122656-21needreboot20:35:231
187322301,5sleep10-21swapper/100:43:591
77762291,5sleep00-21swapper/022:48:490
57252291,5sleep00-21swapper/022:41:590
313202291,5sleep00-21swapper/019:32:500
2716099294,17cyclictest4601-21diskstats22:40:141
27160992919,6cyclictest31540-21sh19:35:001
2716099291,24cyclictest19653-21diskstats23:20:151
2715999299,11cyclictest0-21swapper/019:50:240
27159992914,5cyclictest0-21swapper/000:30:290
27159992914,4cyclictest3286-21runrttasks00:06:070
27159992913,6cyclictest16286-21grep21:45:150
2715999291,12cyclictest2225-21dbus-daemon22:20:130
27159992911,10cyclictest0-21swapper/022:05:510
27159992910,9cyclictest0-21swapper/021:15:300
266592291,5sleep00-21swapper/022:10:570
209102291,5sleep10-21swapper/100:50:091
204992291,5sleep00-21swapper/000:47:220
177282291,5sleep00-21swapper/020:22:040
66772281,5sleep10-21swapper/119:54:421
44112281,5sleep10-21swapper/119:45:381
3652281,5sleep10-21swapper/121:02:371
2716099284,19cyclictest12468-21diskstats21:35:151
2716099284,17cyclictest12523-21memory23:00:201
2716099281,23cyclictest24056-21iostat22:05:171
2715999289,10cyclictest0-21swapper/020:25:200
2715999284,4cyclictest40250irq/92-i91521:51:420
27159992813,4cyclictest0-21swapper/020:55:260
27159992811,7cyclictest25955-21cstates20:45:140
27159992811,6cyclictest9207-21fschecks_time20:00:140
27159992811,5cyclictest30000-21unixbench_singl23:45:300
27159992810,9cyclictest0-21swapper/019:36:250
267892281,5sleep10-21swapper/122:12:171
266782281,5sleep10-21swapper/123:39:511
251412281,5sleep10-21swapper/120:41:001
224482281,5sleep00-21swapper/000:53:090
213942281,5sleep10-21swapper/121:59:551
213782281,5sleep10-21swapper/120:31:021
19912281,5sleep10-21swapper/122:33:321
167242281,5sleep10-21swapper/100:37:491
159322281,5sleep10-21swapper/121:45:041
119792281,5sleep10-21swapper/121:34:441
96282271,5sleep10-21swapper/122:53:321
92632271,5sleep10-21swapper/100:18:271
305742271,5sleep10-21swapper/122:22:171
287592271,3sleep10-21swapper/123:45:101
27160992717,6cyclictest2770-21aten_r4power_po21:10:121
27160992717,6cyclictest22-21ksoftirqd/121:15:231
27160992715,8cyclictest30467-21sensors_temp20:55:281
27160992711,12cyclictest0-21swapper/121:40:271
27159992710,8cyclictest0-21swapper/023:05:220
179362271,5sleep10-21swapper/120:24:171
97262261,5sleep10-21swapper/121:25:511
34632261,4sleep10-21swapper/100:01:431
324082261,5sleep10-21swapper/122:26:551
2716099269,14cyclictest10955-21fschecks_count20:05:151
27160992622,2cyclictest0-21swapper/100:13:521
2716099262,20cyclictest0-21swapper/120:45:261
27160992616,6cyclictest22-21ksoftirqd/122:47:061
27160992616,6cyclictest22-21ksoftirqd/100:20:061
27160992614,6cyclictest40250irq/92-i91522:15:211
2715999268,9cyclictest0-21swapper/000:35:190
170212261,4sleep10-21swapper/123:12:091
16202261,4sleep10-21swapper/123:58:251
2716099259,12cyclictest0-21swapper/122:00:221
2716099258,13cyclictest0-21swapper/123:50:201
2716099253,17cyclictest20148-21sort00:45:291
27160992516,6cyclictest22-21ksoftirqd/120:26:371
27160992516,5cyclictest22-21ksoftirqd/100:27:181
227862251,5sleep10-21swapper/123:28:211
2716099249,11cyclictest3964-21aten_r4power_cu00:05:111
27160992416,5cyclictest22-21ksoftirqd/123:34:131
27160992415,6cyclictest22-21ksoftirqd/119:59:231
2716099241,19cyclictest10525-21iostat22:55:191
2716099232,17cyclictest0-21swapper/123:44:081
2716099232,17cyclictest0-21swapper/123:44:081
2716099232,16cyclictest0-21swapper/120:10:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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