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2026-06-12 - 18:27

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 Fri Jun 12, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8139911031079,21cyclictest0-21swapper/107:25:141
8129910881054,15cyclictest0-21swapper/007:25:140
322442577531,30sleep00-21swapper/007:20:230
5422452363,74sleep10-21swapper/107:22:451
812994111,17cyclictest0-21swapper/010:29:470
5672381,32sleep0645-21python08:45:290
81299366,5cyclictest81rcu_preempt11:46:000
81299366,5cyclictest81rcu_preempt11:45:590
81299358,12cyclictest11568-21unixbench_singl12:05:280
39172341,28sleep03972-21fschecks_count07:30:170
81299335,5cyclictest81rcu_preempt11:00:010
812993216,13cyclictest3-21ksoftirqd/008:38:580
812993212,6cyclictest5243-21munin-run09:00:010
81299321,13cyclictest0-21swapper/010:19:480
298992321,4sleep129994-21hddtemp_smartct11:30:161
286062321,27sleep128610-21diskstats08:35:151
81399313,25cyclictest17538-21smartctl08:05:181
81399313,25cyclictest17538-21smartctl08:05:181
81399312,24cyclictest3909-21df_inode07:30:161
81299312,14cyclictest13773-21ntp_states09:20:260
812993112,5cyclictest31240-21munin-run11:35:010
812993112,16cyclictest0-21swapper/011:19:360
44982311,5sleep10-21swapper/111:49:421
44982311,5sleep10-21swapper/111:49:421
128822311,26sleep113045-21perl10:45:161
88282301,5sleep10-21swapper/107:41:461
86852301,5sleep00-21swapper/010:35:010
81399304,19cyclictest31675-21diskstats11:35:141
813993020,6cyclictest6929-21/usr/sbin/munin10:30:121
813993015,8cyclictest20698-21iostat_ios11:05:181
813993015,8cyclictest20698-21iostat_ios11:05:171
81299309,8cyclictest6674-21users09:00:320
81299309,6cyclictest4309-21ls10:20:280
81299309,6cyclictest4309-21ls10:20:280
81299306,18cyclictest7721-21df_inode07:40:160
81299305,12cyclictest30694-21open_files10:05:240
812993017,8cyclictest18528-21diskstats11:00:160
812993017,10cyclictest3-21ksoftirqd/009:19:000
812993012,15cyclictest0-21swapper/010:11:080
812993011,14cyclictest17985-21cpu12:25:110
279422301,5sleep00-21swapper/008:32:530
269422301,5sleep10-21swapper/112:48:031
261512301,5sleep00-21swapper/008:28:440
161822301,5sleep10-21swapper/109:26:261
126032301,4sleep112566-21apt-get07:51:391
123932301,5sleep10-21swapper/109:16:171
108262301,5sleep00-21swapper/009:14:310
86412291,5sleep00-21swapper/009:06:220
81399294,9cyclictest26736-21diskstats08:30:141
813992921,5cyclictest2401-21NetworkManager12:00:001
813992919,6cyclictest22356-21tr12:35:211
813992917,6cyclictest19213-21diskstats08:10:171
81399291,14cyclictest29011-21munin-run12:55:001
813992910,15cyclictest0-21swapper/110:00:221
81299299,6cyclictest28557-21users12:50:270
81299297,6cyclictest22211-21cron08:17:000
81299295,5cyclictest0-21swapper/009:57:100
812992922,5cyclictest0-21swapper/012:17:400
81299292,14cyclictest4984-21df_inode11:50:150
812992919,6cyclictest2221-21cron08:15:000
812992912,5cyclictest11565-21gdbus12:10:080
812992911,5cyclictest28263-21df10:00:120
81299291,15cyclictest24047-21cron09:50:000
81299291,15cyclictest15750-21/usr/sbin/munin09:25:270
81299291,14cyclictest27652-21wget11:25:090
81299291,14cyclictest10727-21wget10:40:110
81299291,11cyclictest0-21swapper/010:49:510
70182291,5sleep00-21swapper/007:37:390
313192291,5sleep10-21swapper/110:07:241
198882291,5sleep10-21swapper/111:04:301
187962291,24sleep118869-21mailstats12:25:271
182882291,5sleep00-21swapper/009:33:500
97662281,5sleep10-21swapper/112:00:441
81399282,22cyclictest21067-21irqstats09:40:211
813992815,8cyclictest5832-21diskstats07:35:161
81299288,7cyclictest21061-21/usr/sbin/munin09:40:200
81299288,5cyclictest11565-21gdbus12:32:320
81299288,5cyclictest11565-21gdbus12:32:320
81299285,12cyclictest81rcu_preempt12:35:090
81299283,18cyclictest9293-21ntp_states12:00:250
81299282,21cyclictest13559-21diskstats07:55:120
81299282,14cyclictest1046-21cstates11:40:130
81299281,21cyclictest25769-21grep12:45:140
812992812,14cyclictest0-21swapper/011:37:530
81299281,15cyclictest21325-21grep11:05:270
81299281,15cyclictest21325-21grep11:05:260
812992810,5cyclictest18828-21cat08:10:000
812992810,5cyclictest18828-21cat08:09:590
60852281,5sleep10-21swapper/111:51:421
32832281,5sleep10-21swapper/108:54:291
316692281,5sleep10-21swapper/108:42:221
31622281,5sleep10-21swapper/110:20:081
31622281,5sleep10-21swapper/110:20:081
29432281,5sleep00-21swapper/008:51:000
274822281,5sleep10-21swapper/109:56:451
259472281,5sleep10-21swapper/108:26:361
242002281,5sleep10-21swapper/108:22:581
235842281,5sleep10-21swapper/111:13:571
221312281,5sleep10-21swapper/108:16:101
202712281,5sleep10-21swapper/109:39:571
159342281,5sleep10-21swapper/110:52:351
122862281,5sleep10-21swapper/110:43:401
107862281,5sleep10-21swapper/107:47:371
103312281,5sleep10-21swapper/112:05:051
101122281,5sleep10-21swapper/110:35:491
813992717,6cyclictest24460-21sendmail_mailqu12:40:271
813992717,6cyclictest24269-21aten_r4power_en09:50:131
81299279,5cyclictest12611-21chrt07:51:430
81299279,5cyclictest0-21swapper/010:54:520
72802271,5sleep10-21swapper/109:05:111
70952271,5sleep10-21swapper/109:04:481
66022271,5sleep10-21swapper/110:28:181
6412271,5sleep10-21swapper/110:11:261
47892271,5sleep10-21swapper/108:55:311
289482271,5sleep10-21swapper/111:25:571
271332271,5sleep00-21swapper/011:21:340
270562271,5sleep10-21swapper/111:20:471
26532271,5sleep10-21swapper/110:17:211
25182271,5sleep10-21swapper/111:44:291
240242271,5sleep10-21swapper/109:49:461
176442271,5sleep10-21swapper/110:55:541
175182271,5sleep10-21swapper/112:23:041
153992271,4sleep10-21swapper/112:15:481
146412271,5sleep10-21swapper/109:24:551
146052271,5sleep10-21swapper/107:56:081
81299268,8cyclictest0-21swapper/009:52:310
81299266,16cyclictest17713-21cron12:25:000
81299261,16cyclictest0-21swapper/009:38:110
81299261,13cyclictest7585-21python11:55:260
212272261,4sleep10-21swapper/112:32:391
212272261,4sleep10-21swapper/112:32:381
107592261,5sleep10-21swapper/109:13:501
81399253,16cyclictest12815-21iostat_ios12:10:181
813992515,5cyclictest24985-21sort11:15:281
81299251,12cyclictest7539-21kernelversion10:30:190
81299251,12cyclictest31221-21mailstats08:40:280
81299251,12cyclictest16748-21runrttasks08:03:440
81299251,12cyclictest10285-21mailstats07:45:270
813992412,8cyclictest3286-21runrttasks09:30:031
81299249,11cyclictest23544-21aten_r4power_en12:40:110
81299249,11cyclictest0-21swapper/008:20:180
81299248,14cyclictest0-21swapper/011:14:130
813992314,5cyclictest3286-21runrttasks08:00:021
813992213,5cyclictest22-21ksoftirqd/108:47:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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