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2026-06-05 - 13:14

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 Fri Jun 05, 2026 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146589911701133,19cyclictest15297-21smartctl19:25:170
146599911281075,39cyclictest15221-21fschecks_time19:25:151
143742646598,32sleep00-21swapper/019:22:330
143782460417,29sleep10-21swapper/119:22:371
52572830,9sleep11465999cyclictest23:15:141
33972430,3sleep0111rcuc/023:10:140
137792400,5sleep01465899cyclictest20:45:170
250882382,32sleep125092-21irqstats21:15:221
1465899384,4cyclictest81rcu_preempt22:15:100
98902372,31sleep19925-21ntp_states22:00:261
147942360,9sleep11465999cyclictest22:15:101
307062341,5sleep129781-21/usr/sbin/munin22:55:281
178312331,28sleep117905-21iostat19:30:181
170722331,28sleep117239-21df20:55:111
14659993323,6cyclictest29693-21cstates00:20:131
1465899331,8cyclictest0-21swapper/021:05:180
1465899331,28cyclictest32324-21mailstats00:25:290
1465899331,28cyclictest32324-21mailstats00:25:290
14659993218,7cyclictest5622-21diskstats21:50:161
14659993215,13cyclictest31349-21cut00:25:131
14659993215,13cyclictest31349-21cut00:25:121
71002311,5sleep00-21swapper/020:26:590
1465999316,22cyclictest40250irq/92-i91500:55:001
1465899315,14cyclictest26493-21perl22:45:170
1465899313,4cyclictest81rcu_preempt22:50:130
1465899313,4cyclictest81rcu_preempt22:50:120
114922310,9sleep01465899cyclictest22:05:180
17492301,4sleep11757-21diskstats21:40:141
1465899306,12cyclictest24410-21tr00:05:230
1465899303,14cyclictest19869-21python21:00:270
14658993020,6cyclictest11565-21gdbus00:10:150
1465899301,5cyclictest0-21swapper/023:38:240
7712291,5sleep10-21swapper/123:03:251
65112291,5sleep10-21swapper/100:45:031
311732291,5sleep00-21swapper/022:56:450
303532291,5sleep00-21swapper/020:05:010
239842291,5sleep00-21swapper/021:11:290
225282291,5sleep00-21swapper/019:42:070
222902291,5sleep10-21swapper/121:08:261
202382290,6sleep11465999cyclictest22:30:001
186762291,5sleep00-21swapper/019:31:220
178772291,5sleep00-21swapper/023:49:000
166972291,4sleep10-21swapper/120:54:001
1465999293,19cyclictest32314-21diskstats21:35:151
14659992918,6cyclictest3823-21tune2fs21:45:161
14659992916,10cyclictest22-21ksoftirqd/123:11:051
14659992916,10cyclictest22-21ksoftirqd/121:55:301
14659992911,14cyclictest255232chrt22:41:291
1465899299,6cyclictest11003-21grep23:30:160
1465899298,6cyclictest5178-21grep23:15:120
1465899297,4cyclictest81rcu_preempt21:30:240
1465899297,11cyclictest23063-21aten_r4power_vo19:45:110
1465899295,17cyclictest20673-21diskstats22:30:140
1465899293,3cyclictest81rcu_preempt21:29:280
1465899292,14cyclictest7149-21df_inode23:20:130
14658992913,5cyclictest21755-21munin-run00:00:000
14658992911,5cyclictest22016-21aten_r4power_vo00:00:120
1465899291,15cyclictest15716-21watchsnmpd23:41:010
14658992911,5cyclictest10115-21python22:00:290
1465899291,13cyclictest18660-21grep22:25:130
14658992911,13cyclictest28112-21munin-run21:25:000
14658992910,7cyclictest0-21swapper/022:36:410
109732291,5sleep10-21swapper/122:05:121
9582281,5sleep00-21swapper/021:36:480
85622281,5sleep00-21swapper/021:56:220
68682281,5sleep00-21swapper/021:53:140
42952281,5sleep10-21swapper/100:38:341
32092281,5sleep00-21swapper/021:44:190
304822281,5sleep10-21swapper/120:05:041
294412281,5sleep10-21swapper/122:53:141
294412281,5sleep10-21swapper/122:53:131
291762281,5sleep10-21swapper/100:19:151
260342281,5sleep00-21swapper/021:18:130
216932281,5sleep10-21swapper/122:30:541
207712281,5sleep00-21swapper/019:38:370
165612281,5sleep00-21swapper/020:52:330
15822281,5sleep00-21swapper/020:14:300
1465999288,16cyclictest0-21swapper/119:35:171
1465999285,8cyclictest23264-21diskstats19:45:151
1465999284,17cyclictest18438-21diskstats23:50:161
14659992813,12cyclictest22-21ksoftirqd/123:35:171
1465899289,6cyclictest3745-21diskstats21:45:150
1465899289,6cyclictest10454-21sh23:30:010
1465899285,7cyclictest3286-21runrttasks20:35:180
1465899282,13cyclictest29443-21ntp_states20:00:250
1465899281,8cyclictest0-21swapper/019:50:120
1465899281,3cyclictest81rcu_preempt00:33:510
1465899281,14cyclictest9011-21runrttasks20:32:180
1465899281,13cyclictest17426-21ntpdc22:20:220
146282281,3sleep10-21swapper/120:47:001
126222281,5sleep00-21swapper/020:40:410
108872281,5sleep10-21swapper/120:37:211
8892271,5sleep00-21swapper/023:04:380
84052271,5sleep10-21swapper/123:23:161
80362271,4sleep00-21swapper/000:47:510
72222271,5sleep10-21swapper/120:28:141
42222271,5sleep00-21swapper/000:37:480
38012271,5sleep10-21swapper/120:20:081
318322271,4sleep10-21swapper/121:34:491
280882271,5sleep10-21swapper/119:56:281
24732271,5sleep00-21swapper/020:15:210
233172271,5sleep10-21swapper/100:01:521
22962271,5sleep10-21swapper/100:33:171
14659992720,4cyclictest22308-21unixbench_singl19:40:291
14659992718,5cyclictest29835-21unixbench_singl20:00:301
14659992716,7cyclictest1080-21tail20:10:261
14659992715,7cyclictest26075-21sed19:50:281
14659992715,7cyclictest22823-21cpuspeed_turbos21:10:121
14659992712,11cyclictest22-21ksoftirqd/122:45:311
14658992716,7cyclictest2966-21grep23:10:000
1465899271,4cyclictest81rcu_preempt23:52:250
279752261,4sleep10-21swapper/121:23:431
1465999264,7cyclictest28560-21diskstats21:25:161
1465999263,8cyclictest16561-21diskstats23:45:161
1465999263,17cyclictest25957-21diskstats00:10:151
14659992618,4cyclictest22-21ksoftirqd/123:55:151
14659992618,4cyclictest22-21ksoftirqd/123:44:001
14659992618,4cyclictest22-21ksoftirqd/122:20:231
14659992618,4cyclictest22-21ksoftirqd/120:35:011
14659992611,12cyclictest0-21swapper/120:15:271
1465899262,10cyclictest6332-21cron00:45:000
1465899261,13cyclictest24597-21cut22:40:150
14659992518,4cyclictest22-21ksoftirqd/122:35:251
14659992518,4cyclictest22-21ksoftirqd/100:41:451
14659992517,4cyclictest22-21ksoftirqd/123:30:171
14659992517,4cyclictest22-21ksoftirqd/123:05:231
14659992517,4cyclictest22-21ksoftirqd/122:10:141
14659992517,4cyclictest22-21ksoftirqd/122:10:141
14659992510,11cyclictest18951-21cut21:00:111
1465899257,2cyclictest0-21swapper/000:50:110
1465899252,4cyclictest81rcu_preempt00:20:130
1465899252,18cyclictest11565-21gdbus20:55:090
14658992513,8cyclictest27000-21df19:55:120
1465999247,13cyclictest0-21swapper/100:05:191
14659992417,4cyclictest22-21ksoftirqd/123:25:171
14659992417,4cyclictest22-21ksoftirqd/120:40:121
1465899249,11cyclictest27539-21aten_r4power_cu00:15:120
1465899241,15cyclictest0-21swapper/022:13:440
1465899241,15cyclictest0-21swapper/022:13:440
1465899241,15cyclictest0-21swapper/020:23:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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