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2026-09-01 - 12:48

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 Tue Sep 01, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146219912491240,6cyclictest0-21swapper/119:25:071
146219912191191,22cyclictest26065-21users19:50:291
143152633587,31sleep00-21swapper/019:22:210
142672462418,29sleep10-21swapper/119:21:521
1462099129104,22cyclictest0-21swapper/019:25:070
211682950,8sleep01462099cyclictest22:30:250
211452860,5sleep1211ktimersoftd/119:40:121
14620997855,20cyclictest0-21swapper/019:50:300
174402740,4sleep00-21swapper/022:20:270
1462199731,42cyclictest3537-21chrt20:19:411
1462199722,34cyclictest16904-21memory23:45:211
1462199721,40cyclictest22995-21basename19:45:121
1462199721,39cyclictest21787-21taskset21:05:291
1462199721,36cyclictest5074-21chrt20:20:581
1462199721,36cyclictest10171-21ntp_kernel_err20:35:231
1462199711,37cyclictest32019-21chrt20:08:331
1462199711,36cyclictest5056-21chrt21:49:271
1462199711,36cyclictest29718-21chrt00:23:371
1462199711,36cyclictest23198-21chrt00:01:031
1462199711,36cyclictest10460-21chrt22:01:581
249262700,3sleep024106-21/usr/sbin/munin22:40:230
1462199702,35cyclictest17078-21hddtemp_smartct22:20:181
1462199701,38cyclictest32465-21hddtemp_smartct21:35:161
1462199701,36cyclictest18631-21chrt19:31:171
1462199701,35cyclictest25951-21chrt00:13:421
1462199701,35cyclictest18502-21chrt20:58:411
1462199692,33cyclictest9273-21iostat23:25:181
1462199692,33cyclictest31919-21df_inode23:00:131
1462199691,38cyclictest8474-21chrt23:24:311
1462199691,38cyclictest6544-21chrt23:19:091
1462199691,37cyclictest26079-21chrt21:19:101
1462199691,37cyclictest14113-21chrt22:10:531
1462199691,35cyclictest20495-21chrt19:36:091
1462199691,34cyclictest16847-21cat20:55:011
1462199682,32cyclictest19402-21iostat21:00:191
1462199681,38cyclictest6947-21seq21:54:391
1462199681,37cyclictest27457-21chrt22:47:321
1462199671,37cyclictest31782-21chrt21:34:471
1462199671,34cyclictest1317-21hostname00:35:131
1462199671,33cyclictest12512-21chrt22:08:421
14621996713,32cyclictest3286-21runrttasks22:53:541
1462199662,31cyclictest5528-21df_inode00:45:151
1462199661,33cyclictest12737-21chrt23:35:151
1462199661,32cyclictest1197-21seq20:11:051
14621996513,31cyclictest3286-21runrttasks22:59:301
1462199651,32cyclictest20432-21grep23:55:171
1462199651,31cyclictest4629-21seq00:40:511
1462199647,37cyclictest30191-21cpuspeed_turbos00:25:121
1462199641,41cyclictest28575-21/usr/sbin/munin20:00:331
14621996413,30cyclictest3286-21runrttasks23:31:131
1462199631,39cyclictest3286-21runrttasks19:56:431
1462199631,37cyclictest29213-21tr21:25:271
1462199631,33cyclictest7436-21df_inode21:55:141
1462199621,39cyclictest7614-21chrt20:30:111
1462199621,39cyclictest3286-21runrttasks23:51:581
1462199621,39cyclictest3286-21runrttasks22:40:101
1462199621,39cyclictest3286-21runrttasks22:19:301
1462199621,38cyclictest3286-21runrttasks23:08:541
1462199621,35cyclictest1977-21if_eth021:40:171
1462199612,38cyclictest26715-21fschecks_count21:20:151
1462199611,38cyclictest3286-21runrttasks20:43:441
1462199611,38cyclictest3286-21runrttasks00:18:231
1462199601,39cyclictest4418-21chrt23:11:351
1462199601,39cyclictest4418-21chrt23:11:341
1462199601,39cyclictest18459-21/usr/sbin/munin22:25:211
1462199591,37cyclictest798-21seq00:31:261
1462199591,37cyclictest24016-21chrt21:12:151
1462199581,38cyclictest7171-21chrt20:28:131
1462199581,38cyclictest14803-21runrttasks20:49:151
1462199581,36cyclictest24059-21chrt00:08:281
1462199581,35cyclictest22199-21chrt22:35:031
1462199581,35cyclictest21804-21chrt22:32:271
1462199581,33cyclictest7109-21chrt00:50:091
1462199551,36cyclictest15824-21seq23:42:381
1462099401,23cyclictest2019-21/usr/sbin/munin21:40:200
1462099391,13cyclictest4029-21kernelversion21:45:210
1462099372,22cyclictest9893-21/usr/sbin/munin22:00:230
1462099351,22cyclictest3936-21wc20:20:130
1462099349,13cyclictest2225-21dbus-daemon20:13:140
1462099349,13cyclictest1974-21lldpad20:41:000
14620993425,6cyclictest28639-21smartctl00:20:180
1462099341,21cyclictest8462-21mailstats20:30:250
1462099341,20cyclictest22864-21diskstats21:10:130
16142331,4sleep01770-21fschecks_time00:35:170
1462099339,12cyclictest2225-21dbus-daemon22:37:400
1462099331,5cyclictest0-21swapper/021:50:210
1462099331,21cyclictest13694-21basename20:45:190
1462099331,20cyclictest5528-21df_inode00:45:150
1462099331,20cyclictest31946-21cut00:30:130
185222321,10sleep00-21swapper/020:58:550
1462099322,25cyclictest16984-21users19:30:020
1462099322,13cyclictest0-21swapper/022:05:130
14620993213,6cyclictest13097-21diskstats22:10:160
14620993213,6cyclictest11164-21irqstats23:30:210
1462099321,19cyclictest9869-21hddtemp_smartct20:35:170
1462099321,19cyclictest16507-21df_inode23:45:140
14620993112,6cyclictest31050-21irqstats20:05:210
14620993110,5cyclictest12493-21aten_r4power_en23:35:110
1462099308,11cyclictest22391-21seq19:41:100
1462099302,15cyclictest0-21swapper/023:15:170
1462099302,14cyclictest30023-21df_inode22:55:140
1462099302,14cyclictest28684-21perl21:25:170
1462099301,4cyclictest81rcu_preempt22:20:000
1462099301,4cyclictest81rcu_preempt20:54:210
14620993012,5cyclictest22360-21hddtemp_smartct00:00:160
1462099301,21cyclictest0-21swapper/023:21:020
1462099301,18cyclictest30043-21taskset20:02:280
14620993011,6cyclictest7151-21aten_r4power_cu21:55:120
14620993011,6cyclictest28140-21df22:50:130
1462099301,13cyclictest26711-21fschecks_count21:20:150
1462099299,17cyclictest111rcuc/000:12:280
1462099296,14cyclictest0-21swapper/021:35:180
1462099292,15cyclictest7602-21hddtemp_smartct00:50:160
1462099292,14cyclictest2010-21/usr/sbin/munin23:05:270
1462099292,14cyclictest0-21swapper/021:30:290
14620992914,11cyclictest8900-21cpuspeed_turbos23:25:130
14620992911,6cyclictest6949-21chrt20:25:570
1462099291,14cyclictest18959-21/usr/sbin/munin23:50:250
1462099291,13cyclictest25784-21runrttasks21:16:080
14620992910,6cyclictest3266-21cron20:17:000
206852281,6sleep00-21swapper/021:05:090
1462099282,4cyclictest81rcu_preempt00:05:140
1462099282,13cyclictest4115-21/usr/sbin/munin23:10:280
1462099282,13cyclictest4115-21/usr/sbin/munin23:10:270
1462099282,13cyclictest30017-21munin-node00:25:110
1462099281,4cyclictest81rcu_preempt00:40:230
14620992812,5cyclictest595-21taskset23:02:020
1462099281,23cyclictest19820-21sshd22:26:230
14620992811,6cyclictest27188-21hostname19:55:180
1462099281,15cyclictest26924-21/usr/sbin/munin00:15:190
14620992811,5cyclictest25982-21/usr/sbin/munin22:45:110
14620992811,5cyclictest19987-21ntp_states19:35:260
14620992811,5cyclictest14568-21/usr/sbin/munin23:40:120
1462099281,14cyclictest3286-21runrttasks19:45:160
14620992810,6cyclictest20855-21ps23:55:260
1462099271,13cyclictest11565-21gdbus21:03:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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