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2026-04-04 - 14:25

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 Sat Apr 04, 2026 00:59:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
45589911911162,25cyclictest5452-21strings19:25:211
42602619573,32sleep10-21swapper/119:22:261
44742562517,29sleep00-21swapper/019:24:410
455799173153,17cyclictest0-21swapper/019:25:210
2926721230,3sleep03-21ksoftirqd/022:00:170
1921721110,7sleep0455799cyclictest22:56:280
297242910,7sleep0455799cyclictest00:48:590
237492810,5sleep0455799cyclictest00:08:460
35182790,3sleep0111rcuc/022:06:480
185252770,3sleep1211ktimersoftd/120:00:101
74892760,4sleep1201rcuc/122:10:331
248692750,7sleep00-21swapper/023:35:320
289452420,5sleep0455799cyclictest23:40:200
289452420,5sleep0455799cyclictest23:40:200
4558994116,15cyclictest22-21ksoftirqd/123:04:521
4558994116,15cyclictest22-21ksoftirqd/100:36:031
455799412,9cyclictest0-21swapper/000:40:160
4557994114,8cyclictest23432-21ssh22:27:390
4557994113,16cyclictest0-21swapper/023:49:540
455799411,18cyclictest0-21swapper/021:50:120
455799409,14cyclictest30497-21gdbus20:19:420
4557994014,8cyclictest32623-21ssh21:30:180
4557994014,8cyclictest28167-21ssh21:59:420
4557994014,8cyclictest11468-21ntp_states21:05:240
4557994013,9cyclictest23088-21ntp_states20:10:230
455799392,6cyclictest3302-21runrttasks21:29:570
4557993918,6cyclictest3-21ksoftirqd/023:05:120
455799391,7cyclictest32767-21timerandwakeup20:35:290
4557993916,6cyclictest3-21ksoftirqd/022:20:190
4557993916,11cyclictest0-21swapper/021:16:190
4557993914,8cyclictest32222-21iostat23:10:170
4557993913,8cyclictest9609-21irqstats23:20:210
4557993913,8cyclictest17216-21irqstats19:55:190
4557993913,7cyclictest4643-21ssh22:41:160
142172391,34sleep114227-21ssh21:10:431
4558993828,7cyclictest0-21swapper/123:39:361
4558993815,6cyclictest22-21ksoftirqd/121:36:531
455799387,12cyclictest12202-21ssh00:30:130
455799383,31cyclictest0-21swapper/023:51:560
4557993817,6cyclictest3-21ksoftirqd/023:02:270
4557993815,11cyclictest0-21swapper/021:20:280
4557993814,7cyclictest17683-21ntp_states00:35:250
4557993813,8cyclictest12597-21df22:50:140
4557993813,16cyclictest0-21swapper/000:24:290
4557993812,9cyclictest8814-21ssh00:25:560
4558993727,6cyclictest30724-21ssh22:01:211
4558993714,6cyclictest22-21ksoftirqd/122:35:181
455799379,12cyclictest7669-21fschecks_time19:30:150
4557993713,8cyclictest26008-21irqstats22:30:200
4557993713,7cyclictest5596-21irqstats20:50:210
4557993713,7cyclictest1705-21iostat20:40:190
4558993623,9cyclictest4624-21ssh22:41:151
4558993623,9cyclictest11880-21/usr/sbin/munin00:30:181
455799361,6cyclictest8401-21tr22:45:230
4557993613,7cyclictest13414-21ssh23:57:460
4557993613,7cyclictest10764-21taskset22:15:060
455799361,33cyclictest0-21swapper/020:27:360
4557993612,8cyclictest31835-21cat00:50:280
4557993612,8cyclictest31835-21cat00:50:280
4557993611,5cyclictest1936-21sort00:20:010
4557993610,7cyclictest0-21swapper/021:41:470
202952361,32sleep12645-21snmpd23:30:551
136382360,8sleep00-21swapper/023:25:010
109862361,5sleep10-21swapper/119:40:111
455899357,5cyclictest40550irq/92-i91521:16:091
455899352,7cyclictest0-21swapper/100:25:351
455899352,29cyclictest0-21swapper/122:25:351
4558993520,12cyclictest29338-21mailstats23:40:261
4558993520,12cyclictest29338-21mailstats23:40:261
455799355,12cyclictest6979-21cpu20:55:110
455799353,4cyclictest0-21swapper/021:13:150
455799352,15cyclictest0-21swapper/021:45:100
455799351,5cyclictest30902-21wc22:35:210
4557993512,7cyclictest18639-21wget23:30:110
455899348,5cyclictest40550irq/92-i91522:55:151
455899347,5cyclictest40550irq/92-i91500:10:091
455899345,26cyclictest1968-21lldpad21:27:381
455899343,28cyclictest0-21swapper/119:53:151
455899342,5cyclictest0-21swapper/100:23:351
455899342,29cyclictest0-21swapper/121:58:161
455899342,28cyclictest10027-21ssh22:47:051
455899342,15cyclictest0-21swapper/123:52:141
4558993411,5cyclictest31171-21hwlatdetect00:50:181
4558993411,5cyclictest31171-21hwlatdetect00:50:181
4558993410,11cyclictest0-21swapper/121:23:241
455799349,21cyclictest0-21swapper/021:00:120
455799342,14cyclictest0-21swapper/000:03:420
455799341,16cyclictest27685-21taskset20:24:220
193382341,29sleep019342-21ntp_states20:00:240
455899339,5cyclictest40550irq/92-i91523:10:291
455899337,22cyclictest0-21swapper/100:47:221
455899331,15cyclictest8225-21sensors_temp19:30:251
4557993326,5cyclictest0-21swapper/019:43:350
4557993314,6cyclictest0-21swapper/000:10:100
4557993314,5cyclictest0-21swapper/023:18:220
455799331,13cyclictest6360-21fschecks_count22:10:160
132052331,3sleep113216-21ssh23:24:371
455899323,12cyclictest17405-21ssh00:01:331
455899321,29cyclictest0-21swapper/121:32:561
455899321,28cyclictest15023-21kworker/1:122:23:351
4558993212,4cyclictest242202sleep120:15:121
4558993211,6cyclictest22-21ksoftirqd/120:53:541
455899321,15cyclictest20887-21ssh21:51:051
455799324,11cyclictest0-21swapper/020:47:490
4557993224,6cyclictest0-21swapper/019:45:150
4557993214,5cyclictest0-21swapper/020:33:520
4557993214,5cyclictest0-21swapper/019:37:030
455799321,14cyclictest7115-21seq21:37:070
455899317,5cyclictest2206-21dbus-daemon20:36:211
455899316,5cyclictest81rcu_preempt23:58:351
455899316,5cyclictest40550irq/92-i91523:08:521
455899312,17cyclictest0-21swapper/122:16:111
4558993116,11cyclictest12368-21diskmemload00:08:231
455899311,5cyclictest0-21swapper/120:13:171
4558993113,4cyclictest40550irq/92-i91521:08:481
455899311,28cyclictest0-21swapper/123:45:361
455899311,14cyclictest9008-21cstates21:00:121
4557993114,5cyclictest0-21swapper/020:07:420
455899309,6cyclictest4566-21kworker/1:020:30:161
455899307,6cyclictest17676-21sh23:29:071
455899302,9cyclictest1370-21diskstats22:05:141
455899301,27cyclictest0-21swapper/123:16:551
455899301,26cyclictest0-21swapper/122:32:561
455899301,12cyclictest0-21swapper/100:41:201
455799301,13cyclictest15318-21cat19:50:190
455899297,4cyclictest40550irq/92-i91500:15:211
455899292,9cyclictest10098-21mailstats19:35:271
4558992922,5cyclictest0-21swapper/120:41:161
455899291,26cyclictest0-21swapper/122:51:351
4558992910,15cyclictest181142chrt19:57:501
217492291,5sleep10-21swapper/120:06:211
93472281,5sleep10-21swapper/121:40:091
455899281,7cyclictest15811-21rm21:45:431
44122281,5sleep10-21swapper/120:45:471
455899271,7cyclictest26325-21df_inode20:20:141
295042271,5sleep10-21swapper/120:28:491
455899264,5cyclictest40550irq/92-i91520:55:221
4558992618,6cyclictest0-21swapper/119:46:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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