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2026-01-12 - 10:41

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 Mon Jan 12, 2026 00:59:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
230199912301179,30cyclictest23211-21wget19:25:101
230199911081073,31cyclictest31815-21hddtemp_smartct19:45:161
212582662616,31sleep10-21swapper/119:20:101
227372561517,29sleep00-21swapper/019:22:350
2301899241232,6cyclictest0-21swapper/019:45:160
2301899151137,11cyclictest0-21swapper/019:25:110
851221100,2sleep00-21swapper/022:25:520
2518921080,7sleep12301999cyclictest22:43:571
216402870,6sleep121637-21fschecks_count00:20:161
123942830,8sleep02301899cyclictest23:36:560
30312820,8sleep12301999cyclictest22:54:401
158872481,35sleep115929-21sh22:00:271
67452450,8sleep02301899cyclictest21:17:580
47102410,7sleep00-21swapper/021:49:410
171752401,35sleep017185-21ssh22:01:410
2301899392,13cyclictest0-21swapper/023:17:480
2301999386,28cyclictest0-21swapper/121:56:151
23018993816,6cyclictest1391-21cat23:25:290
111982381,33sleep130497-21gdbus00:09:571
52942371,32sleep15304-21ssh22:23:141
52942371,32sleep15304-21ssh22:23:131
23018993729,5cyclictest0-21swapper/000:23:160
2301899372,17cyclictest14668-21ssh00:46:150
23018993720,5cyclictest3-21ksoftirqd/023:20:500
2301999367,15cyclictest14528-21turbostat.cron23:40:001
2301999363,29cyclictest0-21swapper/122:32:161
2301999362,30cyclictest0-21swapper/123:10:561
23018993629,4cyclictest0-21swapper/022:16:360
23018993629,4cyclictest0-21swapper/022:16:350
2301899361,31cyclictest0-21swapper/000:40:360
196332361,4sleep119643-21ssh00:52:521
2301999358,24cyclictest0-21swapper/100:38:541
2301999352,5cyclictest0-21swapper/121:17:361
2301999352,30cyclictest0-21swapper/121:20:551
2301899359,13cyclictest3302-21runrttasks20:35:360
2301899354,3cyclictest0-21swapper/022:30:350
2301899353,4cyclictest81rcu_preempt23:43:480
2301899352,16cyclictest25957-21df19:30:120
2301899351,30cyclictest2403-21irqbalance23:49:160
2301899351,22cyclictest11533-21ssh21:55:320
129962351,31sleep013007-21ssh00:10:320
100932351,30sleep010112-21munin-run20:15:000
2301999343,6cyclictest0-21swapper/123:47:361
2301999343,5cyclictest81rcu_preempt23:21:161
2301999342,29cyclictest0-21swapper/123:25:361
2301999342,29cyclictest0-21swapper/123:09:361
23019993411,4cyclictest40550irq/92-i91523:32:401
23019993410,10cyclictest7302-21fschecks_time22:25:171
2301899348,13cyclictest20063-21df_inode22:05:130
2301899342,28cyclictest0-21swapper/022:12:360
2301899342,20cyclictest18582-21hddtemp_smartct23:10:150
23018993418,5cyclictest3-21ksoftirqd/021:10:290
2301899341,4cyclictest31094-21ssh23:55:560
23018993413,7cyclictest31601-21irqstats00:30:220
2301899341,30cyclictest0-21swapper/020:48:160
219612341,5sleep00-21swapper/021:33:550
193542341,5sleep00-21swapper/000:52:210
37482331,28sleep03761-21ssh22:21:000
37482331,28sleep03761-21ssh22:21:000
2301999335,4cyclictest81rcu_preempt22:10:251
2301999334,4cyclictest81rcu_preempt22:56:201
2301999334,4cyclictest81rcu_preempt00:45:521
2301999333,4cyclictest81rcu_preempt22:35:351
2301999331,5cyclictest0-21swapper/119:56:161
2301899338,12cyclictest26741-21sh00:25:210
2301899337,5cyclictest81rcu_preempt00:00:110
23018993325,4cyclictest4636-21/usr/sbin/munin20:00:150
2301899332,28cyclictest0-21swapper/023:08:360
2301899331,5cyclictest1968-21lldpad23:32:050
2301899331,30cyclictest0-21swapper/020:41:550
2301899331,29cyclictest0-21swapper/021:00:360
2301899331,29cyclictest0-21swapper/021:00:360
2301899331,28cyclictest1968-21lldpad00:16:360
254132321,5sleep00-21swapper/022:44:160
2301999326,22cyclictest0-21swapper/123:15:261
2301999324,4cyclictest81rcu_preempt21:43:561
23019993225,3cyclictest0-21swapper/123:50:551
23019993223,5cyclictest16025-21cat00:14:551
23019993222,6cyclictest15713-21netstat23:40:221
2301999322,16cyclictest2095-21diskstats00:00:161
2301999321,4cyclictest81rcu_preempt22:17:091
2301999321,4cyclictest81rcu_preempt22:17:081
2301899327,12cyclictest5170-21ssh22:55:450
23018993223,5cyclictest1968-21lldpad22:48:030
2301899321,5cyclictest0-21swapper/019:37:560
2301899321,4cyclictest2403-21irqbalance22:39:560
23018993213,7cyclictest8767-21df_inode21:20:130
23018993213,5cyclictest24807-21df_inode23:50:130
2301899321,28cyclictest0-21swapper/020:30:360
110862321,27sleep011098-21rm23:02:180
110862321,27sleep011098-21rm23:02:180
2301999319,19cyclictest2645-21snmpd20:21:311
2301999315,4cyclictest81rcu_preempt21:10:161
2301999315,4cyclictest81rcu_preempt20:38:441
2301999315,4cyclictest81rcu_preempt20:16:151
2301999314,4cyclictest81rcu_preempt00:30:171
2301999313,5cyclictest81rcu_preempt23:00:231
2301999313,5cyclictest81rcu_preempt23:00:221
2301999312,4cyclictest81rcu_preempt21:30:171
2301999311,4cyclictest81rcu_preempt00:29:061
2301999311,26cyclictest30322-21sh23:55:261
2301899314,4cyclictest81rcu_preempt21:36:060
23018993124,5cyclictest0-21swapper/021:51:170
2301899312,16cyclictest12441-21df_inode20:20:130
2301899311,26cyclictest1968-21lldpad22:52:050
23018993111,4cyclictest81rcu_preempt00:35:230
2301899311,14cyclictest7858-21grep00:05:270
178302311,5sleep10-21swapper/100:15:321
2301999303,4cyclictest81rcu_preempt20:27:271
2301999303,4cyclictest81rcu_preempt00:41:151
23019993023,5cyclictest0-21swapper/121:39:351
23019993022,5cyclictest9774-21cron21:55:001
2301999301,7cyclictest20060-21ssh22:05:131
2301999301,4cyclictest81rcu_preempt21:45:081
2301999301,4cyclictest81rcu_preempt20:58:191
2301999301,4cyclictest81rcu_preempt19:35:421
2301999301,26cyclictest0-21swapper/120:51:241
23018993023,5cyclictest0-21swapper/021:40:450
2301899301,11cyclictest81rcu_preempt21:27:020
271782291,5sleep10-21swapper/119:32:491
268982291,4sleep00-21swapper/020:58:400
2301999291,4cyclictest81rcu_preempt21:25:151
2301999291,3cyclictest81rcu_preempt22:45:361
2301899291,14cyclictest29088-21/usr/sbin/munin21:05:210
23018992910,6cyclictest1740-21mailstats19:50:270
98312281,5sleep10-21swapper/120:12:171
81292281,4sleep00-21swapper/020:09:040
2301999285,4cyclictest81rcu_preempt20:41:251
2301999283,4cyclictest81rcu_preempt20:01:581
2301899281,14cyclictest3793-21switchtime19:55:290
23018992810,5cyclictest10432-21cat20:15:100
22292281,5sleep10-21swapper/119:52:271
155112281,5sleep00-21swapper/020:27:330
294392271,5sleep10-21swapper/119:40:051
231192271,5sleep10-21swapper/120:48:241
2301999271,4cyclictest81rcu_preempt20:30:421
2301999271,22cyclictest28662-21sshd21:02:171
2301999271,22cyclictest28662-21sshd21:02:161
23018992717,6cyclictest24189-21grep20:50:220
23018992710,5cyclictest29913-21perl19:40:140
67912261,5sleep10-21swapper/120:05:151
307902261,5sleep10-21swapper/121:09:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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