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2026-05-05 - 11:05

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 Tue May 05, 2026 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1971842995446,5cyclictest2010110-21sh21:00:011
1971847995119,8cyclictest2049301-21grep22:50:272
1971838995139,9cyclictest121ktimers/023:05:140
1971847995024,21cyclictest0-21swapper/200:00:282
1971850994943,4cyclictest2047708-21kworker/u8:2+events_unbound23:13:013
1971847994818,26cyclictest311ktimers/221:10:122
1971847994740,4cyclictest2045937-21unixbench_singl22:40:232
1971842994734,9cyclictest2085793-21grep00:39:591
1971847994634,8cyclictest2055086-21apt-key23:10:002
1971847994617,5cyclictest2055472-21tune2fs23:10:152
1971842994638,5cyclictest2004998-21sh20:45:011
1971842994637,7cyclictest231ktimers/119:15:121
1971842994613,7cyclictest0-21swapper/122:50:271
1971847994521,3cyclictest0-21swapper/220:20:012
1971847994518,8cyclictest311ktimers/221:50:122
1971847994437,4cyclictest1989445-21sendmail20:00:012
1971842994418,4cyclictest0-21swapper/120:25:251
1971850994331,8cyclictest2058493-21cron23:20:003
1971850994233,7cyclictest2029786-21kworker/u8:0+events_unbound21:57:523
1971850994233,6cyclictest1982589-21cron19:39:593
1971850994233,4cyclictest2032301-21munin-plugin-st22:05:013
1971850994135,4cyclictest2011631-21kworker/u8:1+events_unbound21:12:373
1971847994128,9cyclictest1978762-21grep19:25:272
1971847994128,9cyclictest1978762-21grep19:25:262
1971850994021,4cyclictest0-21swapper/319:33:413
1971850994021,4cyclictest0-21swapper/319:33:413
1971850994019,4cyclictest0-21swapper/320:33:273
1971838994033,4cyclictest2023756-21munin-plugin-st21:40:000
1971838994033,4cyclictest2023756-21munin-plugin-st21:40:000
1971850993921,10cyclictest131rcu_preempt23:25:263
1971847993931,4cyclictest0-21swapper/222:10:012
1971847993928,6cyclictest0-21swapper/200:40:002
1971842993918,5cyclictest0-21swapper/122:20:211
1971850993828,6cyclictest2026763-21unixbench_singl21:45:253
1971850993828,4cyclictest2037329-21kworker/u8:2+events_unbound22:36:413
1971847993831,4cyclictest1982606-21munin-plugin-st19:40:002
1971842993828,5cyclictest0-21swapper/123:12:591
1971842993827,8cyclictest1980888-21sh19:35:001
1971842993827,8cyclictest1980888-21sh19:34:591
1971842993816,9cyclictest2010916-21ntpq21:00:221
1971838993831,4cyclictest2056341-21unixbench_multi23:10:250
1971850993731,4cyclictest2066718-21kworker/u8:3+events_unbound23:43:093
1971850993727,6cyclictest0-21swapper/320:20:263
1971850993727,6cyclictest0-21swapper/320:20:263
1971850993716,10cyclictest131rcu_preempt21:01:313
1971838993729,5cyclictest208-21systemd-logind21:22:370
1971838993723,10cyclictest121ktimers/020:00:140
1971838993714,4cyclictest0-21swapper/020:40:250
1971850993628,4cyclictest0-21swapper/321:30:003
1971850993622,4cyclictest131rcu_preempt21:06:593
1971850993618,5cyclictest131rcu_preempt21:35:213
1971850993618,5cyclictest131rcu_preempt21:35:213
1971850993615,10cyclictest131rcu_preempt23:22:593
1971847993628,4cyclictest0-21swapper/223:30:252
1971847993627,5cyclictest0-21swapper/222:30:002
1971847993627,5cyclictest0-21swapper/222:30:002
1971838993610,6cyclictest11-21ksoftirqd/023:45:010
1971850993527,4cyclictest0-21swapper/322:15:243
1971850993522,5cyclictest131rcu_preempt20:40:113
1971850993521,5cyclictest131rcu_preempt19:20:013
1971850993518,9cyclictest131rcu_preempt21:50:133
1971850993517,5cyclictest131rcu_preempt22:55:013
1971850993517,4cyclictest131rcu_preempt20:08:163
1971850993516,9cyclictest131rcu_preempt22:42:023
1971850993514,13cyclictest131rcu_preempt00:25:163
1971847993528,4cyclictest0-21swapper/222:55:172
1971847993528,3cyclictest0-21swapper/220:15:002
1971842993527,4cyclictest0-21swapper/121:50:001
1971842993527,4cyclictest0-21swapper/121:05:271
1971842993527,4cyclictest0-21swapper/120:05:161
1971842993526,5cyclictest1976189-21fschecks_count19:20:171
1971842993525,6cyclictest1973050-21unixbench_singl19:10:251
1971838993527,5cyclictest2082389-21munin-run00:30:000
197183899351,19cyclictest0-21swapper/019:55:150
1971850993428,4cyclictest2016907-21kworker/u8:2+events_unbound21:34:413
1971850993426,4cyclictest0-21swapper/323:50:233
1971850993425,5cyclictest2054434-21unixbench_multi23:05:273
1971850993423,4cyclictest131rcu_preempt19:50:543
1971850993422,5cyclictest131rcu_preempt22:14:003
1971850993422,5cyclictest131rcu_preempt00:05:003
1971850993417,4cyclictest131rcu_preempt21:44:493
1971850993417,11cyclictest131rcu_preempt21:17:473
1971850993416,5cyclictest131rcu_preempt23:30:263
1971850993415,5cyclictest131rcu_preempt20:55:263
1971847993424,7cyclictest2000309-21tune2fs20:30:162
1971842993426,5cyclictest2048060-21latency_hist22:50:001
1971842993424,7cyclictest0-21swapper/121:45:001
197183899346,11cyclictest2075040-21timerwakeupswit00:05:290
197183899343,12cyclictest2037768-21apt-config22:20:020
197185099339,15cyclictest40-21ksoftirqd/320:50:023
1971850993325,4cyclictest0-21swapper/300:15:163
1971850993323,4cyclictest131rcu_preempt20:16:303
1971850993320,5cyclictest131rcu_preempt19:45:063
1971850993320,4cyclictest131rcu_preempt00:24:073
1971850993319,10cyclictest438-21cron22:10:013
1971850993318,7cyclictest2083950-21kworker/u8:2+events_unbound00:35:023
1971850993316,6cyclictest131rcu_preempt19:25:243
1971850993316,6cyclictest131rcu_preempt19:25:243
1971850993316,5cyclictest2066718-21kworker/u8:3-events_freezable_power_23:46:383
1971850993313,10cyclictest131rcu_preempt23:59:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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