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2026-04-04 - 16:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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.

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 100 highest latencies:
System rackbslot5s.osadl.org (updated Sat Apr 04, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
435367995951,5cyclictest515623-21munin-plugin-st11:00:000
435371995545,6cyclictest457884-21grep08:10:251
435371995137,10cyclictest231ktimers/112:20:121
435371994835,10cyclictest231ktimers/111:20:101
435380994736,7cyclictest391ktimers/310:55:123
43536799464,11cyclictest11-21ksoftirqd/012:20:120
435367994623,5cyclictest131rcu_preempt07:30:130
435371994535,6cyclictest506415-21unixbench_multi10:30:241
435376994437,4cyclictest444626-21cron07:35:002
435380994336,4cyclictest439455-21latency_hist07:20:013
435376994330,10cyclictest311ktimers/208:15:142
435367994337,3cyclictest501569-21sendmail10:20:010
435367994336,5cyclictest482354-21kworker/u8:2+events_unbound09:30:400
435367994335,4cyclictest539917-21sh12:10:010
435367994236,4cyclictest487477-21cron09:40:000
43536799423,10cyclictest11-21ksoftirqd/007:35:130
435367994224,6cyclictest498013-21kworker/u8:2+events_unbound10:10:130
435380994133,4cyclictest0-21swapper/307:40:003
435376994132,6cyclictest491122-21munin-plugin-st09:50:002
435371994133,5cyclictest442939-21ls07:30:001
435367994134,4cyclictest491119-21latency_hist09:50:000
435367994133,6cyclictest492760-21kworker/u8:1+events_unbound10:05:430
43538099408,15cyclictest40-21ksoftirqd/310:15:153
435380994032,4cyclictest539921-21sh12:10:003
435380994031,6cyclictest391ktimers/310:05:123
435380994018,12cyclictest131rcu_preempt10:40:113
435380994013,7cyclictest131rcu_preempt08:00:133
435380994013,7cyclictest131rcu_preempt08:00:133
435376994034,4cyclictest439279-21kworker/u8:3+events_unbound07:20:052
435376994031,6cyclictest464636-21unixbench_multi08:30:242
435380993933,4cyclictest524053-21kworker/u8:0+events_unbound12:01:083
435380993933,4cyclictest477207-21kworker/u8:3+events_unbound09:50:423
435380993931,6cyclictest503324-21kworker/u8:0+events_unbound10:30:473
435376993930,6cyclictest514338-21fschecks_time10:55:182
435371993929,7cyclictest501828-21latency_hist10:20:011
435371993928,7cyclictest0-21swapper/108:55:011
43536799394,10cyclictest11-21ksoftirqd/008:40:130
435367993932,4cyclictest480691-21sendmail09:20:010
435380993826,5cyclictest131rcu_preempt12:30:263
435376993828,6cyclictest0-21swapper/209:05:362
435371993831,4cyclictest473825-21cron09:00:011
435371993831,4cyclictest473825-21cron09:00:001
435371993829,4cyclictest0-21swapper/111:10:011
435371993828,5cyclictest0-21swapper/110:00:001
435367993831,4cyclictest483630-21unixbench_multi09:25:280
435367993830,5cyclictest0-21swapper/009:45:000
435380993729,4cyclictest0-21swapper/311:15:003
435380993729,4cyclictest0-21swapper/309:20:243
435380993727,7cyclictest546280-21grep12:25:263
435376993731,4cyclictest492760-21kworker/u8:1+events_unbound10:15:442
435376993728,6cyclictest503900-21fschecks_time10:25:152
435376993727,6cyclictest0-21swapper/209:25:012
435371993729,4cyclictest0-21swapper/112:05:151
435367993727,6cyclictest0-21swapper/011:15:250
435367993727,6cyclictest0-21swapper/011:15:240
435367993721,9cyclictest131rcu_preempt10:29:290
435380993629,3cyclictest0-21swapper/309:55:173
435380993615,12cyclictest480636-21kworker/u8:1-events_freezable_power_09:37:353
43538099360,15cyclictest505177-21cron10:30:003
435376993630,4cyclictest496044-21kworker/u8:0+events_unbound10:10:442
435376993627,6cyclictest487051-21unixbench_singl09:35:272
435376993625,5cyclictest477207-21kworker/u8:3+events_unbound09:32:412
435371993628,5cyclictest0-21swapper/111:05:001
435371993627,5cyclictest0-21swapper/110:10:141
435371993626,6cyclictest0-21swapper/109:45:011
435371993625,7cyclictest0-21swapper/107:20:001
435367993626,6cyclictest0-21swapper/007:40:250
435380993526,4cyclictest0-21swapper/309:20:013
435380993525,6cyclictest0-21swapper/312:40:003
435380993515,5cyclictest444538-21kworker/u8:3+events_unbound07:40:133
435376993524,6cyclictest0-21swapper/207:55:272
435371993526,5cyclictest459995-21sendmail08:20:001
435367993528,4cyclictest439321-21sendmail07:20:000
435367993527,6cyclictest520477-21unixbench_multi11:10:240
435367993525,6cyclictest546267-21grep12:25:260
435367993522,4cyclictest131rcu_preempt07:15:010
435367993520,11cyclictest121ktimers/008:05:140
435367993520,11cyclictest121ktimers/008:05:130
435367993519,9cyclictest131rcu_preempt08:10:140
435380993423,7cyclictest523076-21tune2fs11:20:143
435380993416,5cyclictest131rcu_preempt11:40:123
435380993415,13cyclictest131rcu_preempt11:36:123
435380993413,13cyclictest40-21ksoftirqd/307:50:113
435380993413,13cyclictest40-21ksoftirqd/307:50:113
435376993425,5cyclictest0-21swapper/210:20:162
435371993424,5cyclictest0-21swapper/108:20:171
435367993428,4cyclictest470230-21cut08:50:000
435367993427,4cyclictest503011-21unixbench_multi10:20:250
435367993427,4cyclictest449300-21grep07:45:260
435367993427,4cyclictest449300-21grep07:45:260
435367993419,6cyclictest449893-21kworker/u8:0+events_unbound07:59:120
43536799341,5cyclictest11-21ksoftirqd/008:50:130
435380993327,4cyclictest428162-21kworker/u8:3+events_unbound07:10:033
435380993326,3cyclictest0-21swapper/310:05:003
435380993314,11cyclictest477207-21kworker/u8:3+events_unbound10:35:563
435380993313,13cyclictest131rcu_preempt07:25:173
435380993310,11cyclictest40-21ksoftirqd/308:35:253
435376993325,4cyclictest0-21swapper/212:15:272
435376993325,4cyclictest0-21swapper/207:45:262
435376993325,4cyclictest0-21swapper/207:45:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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