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2026-08-23 - 23:52

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 Sun Aug 23, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
229749912441211,29cyclictest27843-21strings10:25:230
229759912221207,12cyclictest0-21swapper/107:25:111
227062673627,30sleep00-21swapper/007:22:460
227062673627,30sleep00-21swapper/007:22:460
229052561518,29sleep10-21swapper/107:24:511
229052561518,29sleep10-21swapper/107:24:501
2297599149140,6cyclictest0-21swapper/110:25:221
22974998979,7cyclictest0-21swapper/007:25:110
22975996810,4cyclictest0-21swapper/109:05:241
172722660,7sleep02297499cyclictest08:30:300
2297599642,8cyclictest17481-21hddtemp_smartct12:50:191
22975996417,30cyclictest32232-21sshd10:36:411
22975996316,30cyclictest22-21ksoftirqd/110:19:271
2297599593,48cyclictest25815-21iostat_ios10:20:201
2297599592,8cyclictest14759-21hddtemp_smartct08:25:151
2297599582,8cyclictest3286-21runrttasks08:36:471
2297599572,13cyclictest0-21swapper/111:45:331
2297599569,5cyclictest2256-21cut12:10:161
2297599563,5cyclictest40250irq/92-i91507:59:401
2297599563,46cyclictest4748-21iostat_ios10:50:211
22975995610,5cyclictest24505-21ntpq08:50:251
151442560,3sleep0111rcuc/012:45:110
2297599557,5cyclictest179392uname11:25:211
22975995512,36cyclictest1362-21iostat_ios07:50:201
22975995510,40cyclictest0-21swapper/108:30:191
2297599542,8cyclictest9110-21hddtemp_smartct08:10:171
2297599542,8cyclictest15714-21iostat_ios12:45:191
2297599542,7cyclictest11096-21irqstats08:15:221
2297599541,3cyclictest0-21swapper/111:37:351
22975995411,38cyclictest0-21swapper/112:40:251
2297599534,8cyclictest1457-21ntp_states09:15:281
2297599533,6cyclictest16392-21irqstats09:55:211
22975995313,8cyclictest2225-21dbus-daemon12:05:271
2297599523,8cyclictest28050-21iostat_ios09:00:201
2297599523,7cyclictest0-21swapper/112:20:261
2297599521,7cyclictest6686-21df_inode09:30:141
22975995211,4cyclictest0-21swapper/111:01:571
2297599514,8cyclictest22031-21iostat_ios10:10:181
2297599514,7cyclictest32181-21ntp_states07:45:271
2297599512,44cyclictest0-21swapper/110:45:181
22975995111,4cyclictest0-21swapper/111:16:401
2297599511,10cyclictest0-21swapper/109:50:301
2297599504,10cyclictest31899-21memory09:10:221
2297599502,8cyclictest21096-21runrttasks10:08:101
2297599502,5cyclictest29655-21memory10:30:221
2297599502,13cyclictest6710-21memory10:55:211
22975995012,33cyclictest0-21swapper/109:45:511
2297599501,11cyclictest32219-21idleruntime-cro12:05:001
22975995010,7cyclictest2225-21dbus-daemon12:15:041
2297599498,5cyclictest40250irq/92-i91509:40:231
2297599495,4cyclictest0-21swapper/108:40:191
2297599495,39cyclictest0-21swapper/107:35:251
2297599492,8cyclictest22484-21memory08:45:221
2297599492,7cyclictest3286-21runrttasks12:25:481
2297599491,8cyclictest8332-21cut09:35:121
2297599491,8cyclictest3286-21runrttasks07:41:561
22975994916,29cyclictest4860-21cpuspeed_turbos08:00:131
22975994912,32cyclictest0-21swapper/111:23:311
2297599489,4cyclictest0-21swapper/111:31:211
2297599487,5cyclictest40250irq/92-i91510:40:151
2297599483,7cyclictest0-21swapper/107:30:131
2297599483,13cyclictest0-21swapper/111:10:201
2297599482,8cyclictest28458-21munin-run11:55:001
2297599482,7cyclictest25847-21df_inode08:55:141
2297599482,12cyclictest0-21swapper/108:07:321
2297599482,12cyclictest0-21swapper/108:07:321
2297599481,8cyclictest23916-21grep11:40:271
2297599481,5cyclictest9439-21/usr/sbin/munin12:30:331
22975994813,6cyclictest29436-21ntp_states11:55:251
22975994813,31cyclictest6161-21runrttasks09:29:181
22975994813,31cyclictest6161-21runrttasks09:29:181
22975994810,4cyclictest0-21swapper/112:35:161
2297599473,8cyclictest10621-21ntp_states11:05:241
2297599472,6cyclictest17689-21/usr/sbin/munin10:00:311
2297599472,6cyclictest12998-21irqstats08:20:211
22975994712,5cyclictest2560-21/usr/sbin/munin09:20:261
22974994016,8cyclictest31102-21iostat_ios12:00:210
206092401,35sleep020675-21head08:40:220
2297499357,13cyclictest11565-21gdbus12:21:500
2297499353,16cyclictest18255-21users12:50:310
2297499353,10cyclictest81rcu_preempt07:39:090
2297499351,13cyclictest20504-21runrttasks11:30:460
2297499351,11cyclictest81rcu_preempt11:12:310
85162348,22sleep08520-21/usr/sbin/munin11:00:210
2297499347,13cyclictest11565-21gdbus12:44:160
2297499343,16cyclictest14147-21iostat_ios11:15:210
2297499341,20cyclictest14867-21iostat_ios08:25:180
2297499341,14cyclictest32197-21sendmail_mailtr09:10:290
2297499341,12cyclictest0-21swapper/010:10:320
2297499339,12cyclictest6244-21cron09:30:000
2297499339,12cyclictest6244-21cron09:30:000
2297499337,14cyclictest2225-21dbus-daemon11:42:470
2297499334,4cyclictest81rcu_preempt12:39:220
2297499333,17cyclictest0-21swapper/007:45:530
2297499331,20cyclictest15647-21grep11:20:130
2297499331,14cyclictest2225-21dbus-daemon10:08:520
2297499329,10cyclictest1800-21/usr/sbin/munin12:10:110
2297499321,19cyclictest4935-21df08:00:130
2297499321,11cyclictest81rcu_preempt09:18:200
144602322,26sleep014510-21iostat09:50:200
280522311,5sleep00-21swapper/011:50:590
266312311,4sleep026782-21grep08:55:300
2297499319,6cyclictest4021-21cstates12:15:140
2297499313,3cyclictest40250irq/92-i91511:35:150
2297499312,14cyclictest532-21/usr/sbin/munin12:05:220
22974993113,6cyclictest28341-21/usr/sbin/munin09:00:260
2297499311,18cyclictest25238-21fschecks_count11:45:180
2297499303,4cyclictest81rcu_preempt10:35:100
2297499302,15cyclictest8959-21memory09:35:220
2297499302,15cyclictest12323-21df09:45:140
2297499302,13cyclictest18638-21/usr/sbin/munin08:35:210
2297499301,17cyclictest11564-21packagekitd09:40:450
22974993010,15cyclictest23914-21iostat_ios10:15:200
109652301,5sleep00-21swapper/012:33:050
80842291,5sleep00-21swapper/009:34:460
2297499299,7cyclictest27026-21date10:25:000
2297499297,12cyclictest29642-21/usr/sbin/munin09:05:160
2297499294,13cyclictest81rcu_preempt10:45:280
2297499293,13cyclictest0-21swapper/012:25:160
2297499292,14cyclictest3229-21iostat_ios09:20:190
2297499292,14cyclictest18697-21sensors_temp10:00:280
2297499292,14cyclictest17608-21df11:25:130
22974992915,3cyclictest0-21swapper/010:55:290
2297499291,4cyclictest81rcu_preempt08:23:230
2297499291,14cyclictest29072-21aten_r4power_vo10:30:120
22974992911,14cyclictest97902chrt11:05:080
2297499282,14cyclictest0-21swapper/008:54:300
2297499282,13cyclictest29900-21sshd11:55:410
2297499282,12cyclictest1129-21/usr/sbin/munin10:40:250
2297499281,4cyclictest81rcu_preempt08:46:020
2297499281,13cyclictest7028-21/usr/sbin/munin08:05:150
2297499281,13cyclictest7028-21/usr/sbin/munin08:05:140
22974992810,6cyclictest2710-21/usr/sbin/munin07:55:130
22974992810,6cyclictest1454-21taskset07:50:210
22974992810,4cyclictest0-21swapper/009:59:550
2297499278,6cyclictest9518-21processes08:10:260
2297499272,12cyclictest0-21swapper/008:15:270
2297499271,14cyclictest30141-21sed07:40:200
2297499271,14cyclictest26640-21mailstats07:30:280
2297499270,4cyclictest81rcu_preempt10:50:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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