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2026-08-04 - 09:35

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 792 highest latencies:
System rack9slot4s (updated Tue Aug 04, 2026 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138439912501219,28cyclictest17184-21kworker/0:219:27:350
135252666620,30sleep10-21swapper/119:22:131
136682657610,32sleep00-21swapper/019:23:460
1384499233225,5cyclictest0-21swapper/119:27:351
2205221190,5sleep0111rcuc/021:10:130
317702940,3sleep10-21swapper/120:10:111
14762600,5sleep0111rcuc/021:40:270
13843994224,8cyclictest0-21swapper/021:32:390
90923910,4sleep081rcu_preempt00:30:290
13843993929,6cyclictest19389-21ls22:30:000
13843993923,6cyclictest27626-21pidof20:00:000
13843993912,8cyclictest32374-21ntp_states20:10:240
1384399389,17cyclictest7826-21/usr/sbin/munin20:30:280
1384399374,14cyclictest31775-21awk23:00:280
1384399373,28cyclictest18324-21python23:50:270
1384399373,28cyclictest18324-21python23:50:270
13843993713,7cyclictest14860-21irqstats20:50:210
13843993712,8cyclictest6653-21df21:55:140
13843993712,15cyclictest0-21swapper/020:16:400
1384399371,15cyclictest4672-21cpuspeed_turbos21:50:130
1384499361,16cyclictest19944-21taskset19:38:301
13843993623,4cyclictest26560-21munin-run00:15:010
13843993618,6cyclictest20740-21ntp_states21:05:240
13843993611,8cyclictest29434-21hddtemp_smartct22:55:150
13843993611,7cyclictest9886-21wget23:30:120
1384399361,14cyclictest16218-21tr20:55:120
13843993610,16cyclictest0-21swapper/019:42:470
44132351,4sleep04420-21df_inode23:15:140
13843993521,5cyclictest0-21swapper/022:04:320
13843993517,6cyclictest16306-21df19:30:050
1384399351,5cyclictest5293-21runrttasks00:42:470
13843993514,5cyclictest0-21swapper/000:54:260
13843993510,15cyclictest0-21swapper/020:23:070
103102351,4sleep110320-21cron20:40:001
1384399349,8cyclictest29292-21memory00:20:230
1384399349,16cyclictest0-21swapper/020:08:250
1384399348,5cyclictest22519-21fschecks_count19:45:300
1384399347,6cyclictest28466-21/usr/sbin/munin21:25:290
1384399341,13cyclictest0-21swapper/021:00:130
13843993411,14cyclictest0-21swapper/023:36:180
13843993411,14cyclictest0-21swapper/020:47:080
13843993411,13cyclictest0-21swapper/023:44:110
13843993411,13cyclictest0-21swapper/023:26:050
13843993410,7cyclictest14995-21/usr/sbin/munin22:15:290
13843993410,6cyclictest12509-21hddtemp_smartct22:10:170
13843993410,15cyclictest0-21swapper/023:08:530
13843993410,15cyclictest0-21swapper/023:08:520
13843993410,15cyclictest0-21swapper/022:20:300
205642331,27sleep120571-21diskstats19:40:161
183362331,4sleep118497-21perl21:00:161
1384499338,5cyclictest3286-21runrttasks23:49:441
1384399338,7cyclictest26535-21grep21:20:280
13843993322,8cyclictest0-21swapper/000:45:280
13843993321,9cyclictest0-21swapper/021:19:450
1384399332,12cyclictest6672-21latency23:20:220
13843993313,5cyclictest0-21swapper/022:51:090
1384399331,14cyclictest0-21swapper/023:45:370
1384399331,13cyclictest21395-21ls22:35:010
13843993311,13cyclictest0-21swapper/020:41:020
13843993311,13cyclictest0-21swapper/019:36:210
13843993310,14cyclictest0-21swapper/022:38:360
13843993310,14cyclictest0-21swapper/000:26:280
13844993221,6cyclictest675-21wget21:40:131
13844993216,12cyclictest22-21ksoftirqd/100:40:261
1384499321,15cyclictest22670-21ps21:10:251
1384499321,14cyclictest27356-21df22:50:151
13843993221,7cyclictest11690-21taskset22:08:190
13843993213,5cyclictest0-21swapper/023:56:010
13843993212,6cyclictest3-21ksoftirqd/000:08:230
1384399321,12cyclictest479-21sshd21:40:000
13843993211,12cyclictest0-21swapper/022:45:140
13843993211,12cyclictest0-21swapper/020:26:530
13843993211,12cyclictest0-21swapper/019:52:080
13843993210,7cyclictest3-21ksoftirqd/000:16:030
30092311,5sleep00-21swapper/023:10:240
2313323111,7sleep122-21ksoftirqd/122:40:011
1384499312,11cyclictest0-21swapper/123:25:001
13844993119,7cyclictest12226-21cpuspeed_turbos22:10:131
13844993110,5cyclictest9117-21open_inodes22:00:251
1384399319,12cyclictest0-21swapper/022:42:430
13843993114,6cyclictest21078-21chrt00:00:080
1384399311,26cyclictest28407-21kernelversion20:00:220
13843993111,11cyclictest0-21swapper/021:45:540
13843993110,12cyclictest0-21swapper/020:39:040
13843993110,12cyclictest0-21swapper/000:35:270
110822311,5sleep10-21swapper/123:30:501
1384499308,5cyclictest40250irq/92-i91500:10:211
1384499307,5cyclictest40250irq/92-i91500:05:301
1384499303,6cyclictest31787-21irqstats21:35:201
13844993013,5cyclictest28954-21fschecks_count00:20:161
133462301,25sleep111565-21gdbus23:39:521
71122291,5sleep10-21swapper/100:46:571
249322291,5sleep10-21swapper/121:15:331
148562291,5sleep10-21swapper/123:40:451
1384499299,4cyclictest40250irq/92-i91521:25:191
1384499298,5cyclictest40250irq/92-i91522:40:021
1384499298,5cyclictest40250irq/92-i91522:30:211
1384499298,5cyclictest40250irq/92-i91521:45:231
1384499298,5cyclictest40250irq/92-i91521:05:571
1384499297,5cyclictest40250irq/92-i91520:55:021
1384499297,5cyclictest40250irq/92-i91520:30:271
1384499297,5cyclictest40250irq/92-i91519:50:201
1384499296,5cyclictest40250irq/92-i91519:48:531
1384499292,8cyclictest8582-21load23:25:221
1384499291,8cyclictest5339-21perl20:25:161
1384499291,8cyclictest1851-21seq23:08:431
1384499291,8cyclictest1851-21seq23:08:421
1384499291,7cyclictest30467-21ntp_kernel_pll_20:05:241
13844992913,5cyclictest40250irq/92-i91521:50:121
309562281,5sleep10-21swapper/121:34:191
308342281,5sleep10-21swapper/123:00:061
270982281,5sleep10-21swapper/121:23:111
268862281,5sleep10-21swapper/122:49:491
22992281,5sleep10-21swapper/120:15:571
1384499289,5cyclictest40250irq/92-i91500:50:291
1384499287,5cyclictest40250irq/92-i91523:10:301
1384499287,5cyclictest40250irq/92-i91519:55:201
1384499286,6cyclictest40250irq/92-i91519:30:251
1384499286,5cyclictest40250irq/92-i91522:55:161
1384499285,5cyclictest40250irq/92-i91522:15:281
1384499283,19cyclictest21681-21iostat_ios00:00:211
1384499283,18cyclictest19681-21hddtemp_smartct23:55:171
1384499282,7cyclictest30759-21df00:25:141
1384499281,7cyclictest7772-21chrt21:56:511
1384499281,7cyclictest4321-21chrt20:21:091
1384499281,7cyclictest3472-21chrt00:38:391
1384499281,7cyclictest29107-21taskset20:00:541
1384499281,13cyclictest0-21swapper/123:51:211
1384499281,13cyclictest0-21swapper/123:51:211
13602281,5sleep10-21swapper/100:32:271
1384499277,5cyclictest40250irq/92-i91523:15:201
1384499276,5cyclictest40250irq/92-i91520:41:561
1384499273,5cyclictest16821-21memory20:55:221
1384499273,17cyclictest16091-21diskstats22:20:141
114292271,5sleep10-21swapper/122:05:411
191622261,5sleep10-21swapper/122:27:421
1384499262,20cyclictest27309-21irqstats00:15:221
13844992517,5cyclictest12592-21tr20:45:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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