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2026-06-25 - 22:37

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 Thu Jun 25, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
325589911501137,10cyclictest0-21swapper/007:26:200
325589911491133,13cyclictest28173-21kworker/0:210:35:220
325599911151104,8cyclictest0-21swapper/109:40:171
320832555510,30sleep10-21swapper/107:20:351
321552517461,39sleep00-21swapper/007:21:170
3255999186178,6cyclictest0-21swapper/107:26:191
3255999184177,4cyclictest8888-21ntp_states10:35:231
2142121060,8sleep03255899cyclictest09:44:570
87322560,8sleep03255899cyclictest09:10:150
274472430,3sleep1211ktimersoftd/110:00:131
134002430,3sleep10-21swapper/112:15:131
267102400,3sleep1211ktimersoftd/112:50:131
265622400,4sleep0111rcuc/009:55:300
32558993917,5cyclictest3-21ksoftirqd/008:14:420
4922380,4sleep041ktimersoftd/010:15:110
64182361,5sleep16421-21irqstats11:55:201
32558993518,6cyclictest3-21ksoftirqd/012:48:010
154152351,30sleep115451-21sort10:55:001
32559993419,8cyclictest18776-21iostat_ios08:10:201
32559993413,7cyclictest27422-21cron08:35:001
3255899345,4cyclictest81rcu_preempt08:10:000
3255899343,5cyclictest31367-21aten_r4power_cu08:45:110
3255899342,19cyclictest0-21swapper/012:50:290
3255899341,21cyclictest3723-21taskset11:49:240
3255899332,18cyclictest0-21swapper/012:10:100
32558993314,6cyclictest3918-21python07:30:260
3255899331,13cyclictest0-21swapper/009:09:350
318212331,28sleep131826-21ntpq10:10:241
133442330,4sleep041ktimersoftd/009:20:280
3255999327,13cyclictest4989-21load10:25:201
3255999323,5cyclictest81rcu_preempt08:00:001
3255999323,5cyclictest81rcu_preempt08:00:001
3255999321,10cyclictest19444-21grep12:30:151
3255899321,23cyclictest0-21swapper/008:44:380
164192321,27sleep016454-21proc_pri10:55:280
3255999316,4cyclictest81rcu_preempt08:08:061
3255999315,4cyclictest81rcu_preempt08:51:251
32559993118,7cyclictest15540-21diskstats12:20:151
3255899317,5cyclictest6035-21basename10:30:000
3255899317,12cyclictest15137-21taskset10:52:030
3255899312,15cyclictest0-21swapper/011:17:080
32558993112,6cyclictest18508-21memory09:35:210
3255899311,25cyclictest24852chrt08:54:400
32558993111,16cyclictest3-21ksoftirqd/009:16:320
32558993111,16cyclictest3-21ksoftirqd/009:16:310
141132311,5sleep00-21swapper/007:58:410
141132311,5sleep00-21swapper/007:58:410
63262301,5sleep00-21swapper/009:04:320
3255999306,10cyclictest0-21swapper/111:39:321
3255999303,11cyclictest5490-21ntp_states09:00:251
3255999302,24cyclictest0-21swapper/109:30:161
3255999301,4cyclictest81rcu_preempt11:08:211
32559993012,14cyclictest10293-21/usr/sbin/munin09:15:251
32559993012,14cyclictest10293-21/usr/sbin/munin09:15:251
32558993023,4cyclictest3-21ksoftirqd/007:50:220
32558993021,6cyclictest32347-21cron11:40:000
3255899302,16cyclictest0-21swapper/009:32:180
3255899301,4cyclictest81rcu_preempt12:42:290
32558993012,6cyclictest11320-21munin-run12:09:590
32558993012,5cyclictest81rcu_preempt12:20:000
32558993011,6cyclictest28172-21iostat_ios08:35:180
222542301,5sleep00-21swapper/012:36:370
215912301,25sleep121685-21/usr/sbin/munin09:45:111
158852301,5sleep00-21swapper/008:02:230
55522291,5sleep10-21swapper/111:53:581
4742291,4sleep10-21swapper/108:48:391
43272291,5sleep10-21swapper/108:58:261
35532291,6sleep10-21swapper/111:47:381
3255999296,4cyclictest81rcu_preempt11:44:541
3255999295,4cyclictest81rcu_preempt08:24:521
3255999294,4cyclictest81rcu_preempt10:19:511
3255999293,4cyclictest81rcu_preempt10:44:151
3255999291,4cyclictest81rcu_preempt10:20:281
32559992913,12cyclictest17681-21cut11:00:121
3255899299,6cyclictest3001-21sshd08:55:130
3255899294,4cyclictest81rcu_preempt11:32:210
3255899293,5cyclictest81rcu_preempt10:05:200
3255899293,14cyclictest12127-21diskstats10:45:130
3255899292,14cyclictest0-21swapper/009:46:060
3255899291,7cyclictest6379-21tr10:30:120
3255899291,4cyclictest81rcu_preempt07:42:170
32558992912,5cyclictest24299-21ntp_states09:50:240
32558992911,6cyclictest8979-21users12:00:300
3255899291,15cyclictest11565-21gdbus08:16:300
3255899291,14cyclictest16416-21tail12:20:290
325332291,6sleep00-21swapper/010:13:120
305782291,5sleep10-21swapper/110:07:231
285722291,5sleep00-21swapper/010:01:020
273232291,5sleep00-21swapper/008:34:070
263212291,5sleep10-21swapper/111:20:561
234652291,5sleep123471-21aten_r4power_cu09:50:101
186232291,5sleep10-21swapper/112:27:541
174682291,3sleep02225-21dbus-daemon11:00:040
113202291,5sleep00-21swapper/010:41:240
92572281,5sleep10-21swapper/112:03:141
71592281,4sleep00-21swapper/011:56:070
3255999289,15cyclictest0-21swapper/110:30:301
3255999286,6cyclictest11565-21gdbus07:36:001
3255999286,4cyclictest81rcu_preempt12:42:331
3255999285,4cyclictest81rcu_preempt09:20:491
3255999285,4cyclictest81rcu_preempt09:06:541
3255999285,4cyclictest81rcu_preempt08:25:081
3255999283,4cyclictest81rcu_preempt07:49:091
3255999282,10cyclictest7210-21hddtemp_smartct07:40:181
32559992819,5cyclictest26987-21tr11:25:121
32559992818,6cyclictest29793-21cat11:30:291
32559992818,6cyclictest12637-21tail12:10:271
3255999281,4cyclictest81rcu_preempt08:40:221
3255899289,5cyclictest25106-21aten_r4power_vo11:20:110
3255899282,4cyclictest81rcu_preempt11:10:210
32558992815,7cyclictest364-21diskstats11:40:140
3255899281,18cyclictest0-21swapper/009:25:080
283872281,5sleep00-21swapper/011:27:550
232432281,5sleep00-21swapper/008:20:410
208202281,5sleep00-21swapper/011:07:290
204862281,5sleep00-21swapper/012:32:450
192762281,5sleep10-21swapper/109:37:191
164562281,5sleep10-21swapper/110:55:291
157232281,5sleep10-21swapper/108:00:431
3255999273,18cyclictest24956-21df12:45:131
3255999271,6cyclictest20868-21/usr/sbin/munin12:35:271
32558992710,5cyclictest24839-21python08:25:270
269112271,5sleep10-21swapper/109:58:301
215262271,5sleep10-21swapper/108:17:331
131912271,5sleep10-21swapper/110:46:201
119732271,5sleep10-21swapper/107:50:561
3255999263,4cyclictest81rcu_preempt09:12:111
3255999263,3cyclictest81rcu_preempt09:25:421
32559992617,5cyclictest22-21ksoftirqd/108:35:311
32559992615,7cyclictest10925-21runrttasks12:06:061
3255899267,6cyclictest4912-21mailstats11:50:280
3255899266,12cyclictest0-21swapper/010:21:130
3255899262,7cyclictest11565-21gdbus07:45:300
3255899261,14cyclictest0-21swapper/007:36:000
187252261,5sleep00-21swapper/012:28:570
3255999253,16cyclictest23790-21memory11:15:211
32559992515,6cyclictest4053-21sort07:30:281
32559992510,11cyclictest3286-21runrttasks11:14:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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