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2026-08-03 - 10:42

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 Mon Aug 03, 2026 00:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24339912141177,30cyclictest4266-21sshd19:28:541
20992591544,32sleep10-21swapper/119:22:121
19762509461,31sleep00-21swapper/019:21:000
132032850,3sleep041ktimersoftd/022:40:280
2432997552,20cyclictest0-21swapper/019:28:540
320602740,4sleep00-21swapper/023:30:290
243299492,15cyclictest41ktimersoftd/022:48:430
243299471,15cyclictest41ktimersoftd/000:32:060
243299471,14cyclictest41ktimersoftd/019:33:290
243299452,14cyclictest41ktimersoftd/021:14:120
243299452,14cyclictest20884-21taskset23:01:180
243299427,5cyclictest7194-21ntpq22:25:280
243299424,12cyclictest41ktimersoftd/022:35:000
243299422,25cyclictest17919-21df22:55:150
243299418,5cyclictest8040-21mailstats19:35:260
243299411,9cyclictest0-21swapper/021:56:520
243299405,15cyclictest29287-21/usr/sbin/munin22:00:140
243299403,10cyclictest0-21swapper/020:20:360
243299402,8cyclictest0-21swapper/023:49:090
243299402,8cyclictest0-21swapper/020:33:190
243299402,8cyclictest0-21swapper/000:01:560
243299401,9cyclictest0-21swapper/023:10:130
243299401,9cyclictest0-21swapper/021:40:120
243299401,9cyclictest0-21swapper/021:00:170
243299401,8cyclictest0-21swapper/023:59:400
243299401,8cyclictest0-21swapper/023:39:480
243299401,8cyclictest0-21swapper/021:45:180
243299401,8cyclictest0-21swapper/019:45:160
243299395,6cyclictest3-21ksoftirqd/000:36:510
243299395,5cyclictest13537-21ntpq19:50:260
243299391,9cyclictest0-21swapper/020:45:280
243299391,8cyclictest0-21swapper/023:41:320
243299391,8cyclictest0-21swapper/020:37:180
243299391,8cyclictest0-21swapper/020:25:100
243299385,14cyclictest41ktimersoftd/020:43:080
243299382,8cyclictest0-21swapper/021:50:280
243299381,8cyclictest0-21swapper/021:37:360
243299381,8cyclictest0-21swapper/021:22:320
243299381,8cyclictest0-21swapper/000:50:210
243299377,6cyclictest3-21ksoftirqd/022:06:000
243299374,5cyclictest13178-21ntpq21:15:260
243299372,8cyclictest0-21swapper/019:55:260
243299372,20cyclictest0-21swapper/022:37:200
243299371,8cyclictest0-21swapper/023:25:490
243299371,8cyclictest0-21swapper/022:24:520
243299371,8cyclictest0-21swapper/022:16:070
243299371,8cyclictest0-21swapper/021:30:180
243299371,8cyclictest0-21swapper/021:25:360
243299371,8cyclictest0-21swapper/000:11:250
243299371,18cyclictest0-21swapper/023:50:240
243299371,17cyclictest0-21swapper/020:50:210
2433993612,7cyclictest2225-21dbus-daemon21:00:331
243299365,13cyclictest3-21ksoftirqd/020:01:310
243299364,14cyclictest3-21ksoftirqd/000:40:530
243299363,5cyclictest23607-21sshd20:17:540
243299361,8cyclictest0-21swapper/023:15:210
243299361,8cyclictest0-21swapper/023:07:000
243299361,8cyclictest0-21swapper/019:40:210
243299356,6cyclictest3-21ksoftirqd/000:19:010
243299352,13cyclictest20554-21taskset00:26:390
243299351,8cyclictest0-21swapper/000:06:520
243299347,6cyclictest18125-21ntpq00:20:230
243299344,5cyclictest21057-21ntpq20:10:250
189272341,29sleep118944-21iostat_ios20:05:201
2433993324,6cyclictest21861-21ntpq00:30:251
243299331,8cyclictest0-21swapper/020:08:400
243299331,19cyclictest0-21swapper/000:45:040
243299331,15cyclictest0-21swapper/020:55:210
19362331,27sleep11960-21munin-run23:40:011
174002331,28sleep117569-21df00:20:121
243399329,19cyclictest3286-21runrttasks22:10:481
2433993218,8cyclictest31101-21diskstats23:30:141
243399321,7cyclictest12346-21/usr/sbin/munin21:15:261
243299326,5cyclictest27886-21ntpq23:20:260
243299324,4cyclictest81rcu_preempt21:05:290
243399314,4cyclictest81rcu_preempt00:40:011
243399313,6cyclictest40250irq/92-i91519:55:311
243299311,8cyclictest0-21swapper/022:53:220
243299311,8cyclictest0-21swapper/022:10:180
243399307,12cyclictest40250irq/92-i91500:05:191
243399305,4cyclictest81rcu_preempt00:35:421
243399304,19cyclictest23577-21diskstats23:10:161
243399304,14cyclictest81rcu_preempt22:10:001
2433993023,4cyclictest28042-21diskstats20:30:161
2433993015,5cyclictest40250irq/92-i91522:30:201
243399301,4cyclictest81rcu_preempt19:33:231
243399301,15cyclictest19720-21munin-run21:35:001
105022301,5sleep10-21swapper/119:43:231
93122291,4sleep10-21swapper/123:57:111
36882291,5sleep10-21swapper/123:42:131
285162291,5sleep10-21swapper/123:22:261
272372291,5sleep10-21swapper/120:26:271
269022291,5sleep10-21swapper/121:51:411
243399296,3cyclictest81rcu_preempt23:53:101
243399295,6cyclictest22393-21kernelversion21:40:211
243399295,4cyclictest81rcu_preempt20:00:131
243399294,9cyclictest28898-21diskstats00:50:151
243399293,4cyclictest81rcu_preempt23:25:581
243399293,4cyclictest81rcu_preempt19:51:031
243399291,5cyclictest81rcu_preempt00:03:001
2433992915,8cyclictest27687-21diskstats21:55:171
243399291,4cyclictest81rcu_preempt23:08:101
243399291,4cyclictest81rcu_preempt22:45:391
243399291,4cyclictest81rcu_preempt21:06:511
243399291,15cyclictest18331-21missed_timers22:55:241
216752291,5sleep10-21swapper/120:12:201
161082291,5sleep10-21swapper/121:25:041
150202291,5sleep10-21swapper/100:12:521
77992281,5sleep10-21swapper/122:27:111
6402281,5sleep10-21swapper/120:43:421
59892281,5sleep10-21swapper/122:22:551
243399287,3cyclictest40250irq/92-i91500:25:231
2433992814,8cyclictest1232-21diskstats20:45:171
2433992813,3cyclictest0-21swapper/100:48:011
243399281,24cyclictest116172sleep122:37:521
243399281,15cyclictest4418-21diskstats23:45:151
2433992811,4cyclictest81rcu_preempt23:15:261
243399281,14cyclictest3541-21irqstats20:50:211
121672281,5sleep10-21swapper/119:46:081
250222271,5sleep10-21swapper/121:46:381
243399275,7cyclictest2225-21dbus-daemon22:02:021
243399275,7cyclictest10762-21diskstats21:10:141
243399273,8cyclictest19827-21diskstats23:00:161
243399271,4cyclictest81rcu_preempt21:38:121
2433992711,4cyclictest81rcu_preempt22:50:261
243399271,14cyclictest81rcu_preempt19:35:261
243399269,14cyclictest201rcuc/120:19:561
243399264,16cyclictest29915-21diskstats20:35:161
243399262,20cyclictest15669-21chrt00:15:141
2433992617,6cyclictest22-21ksoftirqd/121:20:131
2433992617,6cyclictest22-21ksoftirqd/120:23:451
2433992611,10cyclictest12061-21wget22:40:111
243399253,16cyclictest3259-21memory22:15:221
2433992414,6cyclictest5173-21cut20:55:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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