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2026-05-30 - 08:10

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 Sat May 30, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81589911791168,7cyclictest0-21swapper/019:26:410
64312559510,32sleep00-21swapper/019:20:100
79722554509,30sleep10-21swapper/119:23:371
8159999082,5cyclictest0-21swapper/119:26:411
815999719,41cyclictest4386-21df23:30:121
142512700,31sleep00-21swapper/022:30:130
8159996910,38cyclictest12200-21if_eth023:50:181
815999652,5cyclictest0-21swapper/121:50:221
815999616,4cyclictest0-21swapper/123:55:101
815999611,7cyclictest21509-21aten_r4power_vo22:50:121
815999611,40cyclictest27397-21taskset20:13:091
815999601,41cyclictest32380-21aten_r4power_cu00:45:111
815999601,40cyclictest28924-21/usr/sbin/munin23:10:201
8159996012,34cyclictest15181-21runrttasks19:40:181
815999591,45cyclictest1698-21taskset23:22:191
815999591,45cyclictest12171-21seq19:31:171
8159995911,35cyclictest1803-21cut00:50:081
815999582,7cyclictest3286-21runrttasks22:00:121
815999581,38cyclictest22282-21cpuspeed_turbos20:00:091
815999581,37cyclictest16514-21uname22:35:231
8159995811,39cyclictest25173-21/usr/sbin/munin23:00:131
815999579,5cyclictest31036-21cut21:50:011
815999573,9cyclictest1533-21irqstats20:30:211
815999572,6cyclictest18265-21df21:15:131
8159995714,38cyclictest16164-21strings00:00:231
78462570,2sleep07847-21sort20:45:290
815999567,6cyclictest23353-21seq21:28:451
815999563,9cyclictest0-21swapper/120:44:051
815999563,46cyclictest23872-21iostat_ios22:55:181
815999561,7cyclictest19346-21taskset22:44:541
815999561,6cyclictest26968-21df_inode00:30:131
8159995610,32cyclictest3286-21runrttasks00:25:141
815999552,7cyclictest5982-21/usr/sbin/munin23:35:201
815999552,6cyclictest24477-21hddtemp_smartct20:05:181
815999551,8cyclictest7878-21/usr/sbin/munin23:40:201
815999551,7cyclictest12043-21taskset20:58:431
815999548,5cyclictest2244-21sshd21:59:221
815999547,5cyclictest23740-21awk00:20:231
815999542,7cyclictest3517-21iostat_ios20:35:201
815999542,7cyclictest3517-21iostat_ios20:35:191
815999542,6cyclictest30941-21hddtemp_smartct00:40:161
815999541,7cyclictest25516-21/usr/sbin/munin21:35:231
815999541,7cyclictest16486-21wget19:45:101
815999541,5cyclictest207812sleep100:14:041
815999534,42cyclictest28006-21iostat_ios21:40:191
815999532,7cyclictest14445-21munin-run19:40:011
815999531,7cyclictest6775-21tune2fs22:10:151
815999531,6cyclictest31523-21cut20:25:101
815999531,6cyclictest19341-21mailstats19:50:261
815999531,6cyclictest159052sleep121:09:401
815999529,4cyclictest40250irq/92-i91521:10:161
815999525,5cyclictest40250irq/92-i91500:36:101
815999523,6cyclictest17776-21hddtemp_smartct00:05:181
815999521,8cyclictest25096-21taskset21:32:221
815999521,4cyclictest20213-21/usr/sbin/munin19:55:151
8159995213,35cyclictest2908-21memory23:25:211
815999517,4cyclictest6696-21/usr/sbin/munin20:45:211
815999514,40cyclictest27648-21iostat_ios23:05:221
815999512,6cyclictest8867-21df_inode20:50:141
815999512,6cyclictest8514-21df_inode22:15:141
815999512,6cyclictest31628-21ntp_states23:15:221
815999512,6cyclictest13368-21smart_sda21:00:271
815999512,6cyclictest11389-21users22:20:301
8159995113,25cyclictest14686-21grep22:30:221
815999504,40cyclictest10446-21memory23:45:211
815999504,39cyclictest28032-21diskstats20:15:141
815999502,6cyclictest12295-21diskstats22:25:131
815999501,8cyclictest20508-21/usr/sbin/munin22:45:251
8159995013,33cyclictest3286-21runrttasks20:20:101
815999492,6cyclictest5066-21irqstats22:05:201
815999491,6cyclictest22671-21taskset00:19:111
815999491,6cyclictest20177-21df_inode21:20:141
815899468,29cyclictest40250irq/92-i91522:55:270
815899352,11cyclictest81rcu_preempt20:02:150
8158993515,8cyclictest27243-21awk21:40:000
815899351,13cyclictest20057-21sh19:55:000
265162341,29sleep026542-21munin-run00:30:000
8158993311,7cyclictest14519-21df_inode21:05:140
815899329,6cyclictest291472chrt20:16:520
815899321,12cyclictest0-21swapper/023:05:290
206302321,27sleep011564-21packagekitd00:12:320
96212311,5sleep00-21swapper/022:16:460
8158993123,5cyclictest3-21ksoftirqd/020:05:250
815899312,15cyclictest11565-21gdbus19:31:000
815899311,12cyclictest2042-21latency_hist23:25:010
61162311,5sleep00-21swapper/020:40:430
319952311,5sleep00-21swapper/000:43:170
313962311,26sleep031454-21latency23:15:190
210772311,5sleep00-21swapper/022:48:220
173892311,5sleep00-21swapper/022:39:140
13592311,9sleep00-21swapper/000:47:250
815899303,13cyclictest9374-21ntpdc20:50:220
8158993016,11cyclictest2568-21needreboot00:50:210
815899301,4cyclictest81rcu_preempt00:01:250
815899301,3cyclictest0-21swapper/023:59:040
8158993013,15cyclictest0-21swapper/022:50:050
815899301,25cyclictest132932chrt23:54:240
8158993012,4cyclictest5480-21python22:05:270
8158993011,6cyclictest30650-21python20:20:260
815899301,14cyclictest15180-21iostat_ios19:40:180
8158993010,6cyclictest19014-21/usr/sbin/munin21:15:270
77412301,5sleep00-21swapper/022:11:470
326842301,5sleep00-21swapper/021:53:030
303082301,5sleep00-21swapper/023:11:370
275362301,5sleep00-21swapper/020:14:360
264892301,5sleep00-21swapper/023:00:560
250962301,5sleep00-21swapper/021:32:230
232862301,5sleep00-21swapper/021:28:020
215162301,5sleep00-21swapper/021:24:100
186542301,5sleep00-21swapper/000:06:270
178972301,5sleep00-21swapper/019:47:060
133532301,5sleep00-21swapper/022:26:170
815899295,4cyclictest81rcu_preempt23:35:120
815899291,5cyclictest81rcu_preempt21:48:240
815899291,4cyclictest81rcu_preempt00:30:220
815899291,24cyclictest8813-21uname23:40:260
8158992910,5cyclictest2077-21taskset20:30:280
5232291,5sleep00-21swapper/020:27:320
299542291,5sleep00-21swapper/000:36:460
191562291,5sleep00-21swapper/022:42:560
177752291,5sleep00-21swapper/021:14:330
815899289,5cyclictest4937-21ntp_states23:30:240
815899285,12cyclictest40250irq/92-i91520:58:470
8158992821,5cyclictest3-21ksoftirqd/000:20:000
815899281,13cyclictest2354-21tr23:25:120
8158992810,6cyclictest4267-21taskset20:36:130
8158992810,6cyclictest4267-21taskset20:36:120
5652281,5sleep00-21swapper/021:55:070
138562281,5sleep00-21swapper/021:02:530
115092281,3sleep00-21swapper/022:21:380
815899272,12cyclictest28098-21sshd21:40:220
815899271,4cyclictest81rcu_preempt23:50:010
815899271,21cyclictest21228-21python19:55:270
815899261,13cyclictest13192-21http_loadtime19:35:170
815899261,11cyclictest2973-21fschecks_time22:00:150
815899251,15cyclictest0-21swapper/000:22:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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