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2025-11-29 - 13:14
OSADL QA Farm

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #3, 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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 50 highest latencies:
System rack3slot4.osadl.org (updated Wed Nov 26, 2025 00:46:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
330663499132100,24cyclictest3511628-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		23:23:050
330664099131121,6cyclictest210-21kswapd021:20:011
3306634991276,80cyclictest3513756-21kworker/0:2+events@
igb_watchdog_task		23:25:370
330664099121110,7cyclictest3371983-21apt-get21:25:151
330664099121110,7cyclictest3371983-21apt-get21:25:151
3306634991182,76cyclictest3390487-21kworker/0:1+events@
igb_watchdog_task		22:15:410
3306634991182,76cyclictest3390487-21kworker/0:1+events@
igb_watchdog_task		22:15:410
3306634991155,73cyclictest3565431-21kworker/0:1+events@
igb_watchdog_task		00:35:190
3306634991073,62cyclictest3321118-21kworker/0:1+events@
igb_watchdog_task		20:20:020
33066349910579,19cyclictest3328583-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		20:02:370
33066349910549,16cyclictest3390487-21kworker/0:1+events@
igb_watchdog_task		22:46:430
33066349910465,15cyclictest3390487-21kworker/0:1+events@
igb_watchdog_task		22:10:350
3306634991045,78cyclictest13-21ksoftirqd/022:30:240
3306634991041,59cyclictest3374398-21kworker/0:2+events@
igb_watchdog_task		21:28:160
3306634991041,59cyclictest3374398-21kworker/0:2+events@
igb_watchdog_task		21:28:160
3306634991032,52cyclictest3358013-21kworker/0:0+events@
igb_watchdog_task		21:15:420
33066349910045,15cyclictest3565431-21kworker/0:1+events@
igb_watchdog_task		00:32:260
33066349910039,24cyclictest3302245-21kworker/0:1+events@
igb_watchdog_task		19:11:240
3306634991002,67cyclictest3318520-21kworker/0:2+events@
igb_watchdog_task		19:40:020
3306657999993,3cyclictest0-21swapper/523:23:055
3306648999986,7cyclictest3470116-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		23:03:033
3306634999940,36cyclictest3394325-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		21:57:530
330663499993,69cyclictest3390487-21kworker/0:1+events@
igb_watchdog_task		22:00:340
330663499993,69cyclictest3390487-21kworker/0:1+events@
igb_watchdog_task		22:00:330
3306648999884,7cyclictest3523478-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		00:20:113
3306648999884,7cyclictest3523478-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		00:20:103
3306634999855,35cyclictest3314318-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		19:27:310
3306634999855,35cyclictest3314318-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		19:27:310
3306634999852,13cyclictest3358013-21kworker/0:0+events@
igb_watchdog_task		21:20:180
330663499971,56cyclictest3533274-21kworker/0:1+events@
igb_watchdog_task		23:50:140
3306634999657,18cyclictest3310263-21kworker/0:2+events@
igb_watchdog_task		19:20:270
3306634999551,27cyclictest3344737-21kworker/0:1+events@
igb_watchdog_task		21:11:480
3306634999546,28cyclictest3565431-21kworker/0:1+events@
igb_watchdog_task		00:25:140
330663499952,56cyclictest3565431-21kworker/0:1+events@
igb_watchdog_task		00:20:420
330663499952,56cyclictest3565431-21kworker/0:1+events@
igb_watchdog_task		00:20:410
3306634999480,7cyclictest3361000-21kworker/u12:4+events_unbound@
flush_memcg_stats_dwork		21:35:260
3306634999447,28cyclictest3302245-21kworker/0:1+events@
igb_watchdog_task		19:15:100
3306634999255,29cyclictest3340771-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		20:42:430
3306634999255,29cyclictest3340771-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		20:42:430
3306634999066,18cyclictest3505606-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		23:18:040
3306634998969,5cyclictest3390487-21kworker/0:1+events@
igb_watchdog_task		22:55:300
330663499893,63cyclictest15-21rcuc/023:00:130
3306634998933,39cyclictest66250irq/530-eth0-Tx23:30:400
3306634998933,39cyclictest66250irq/530-eth0-Tx23:30:390
3306634998876,6cyclictest3564189-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		00:18:130
3306634998863,18cyclictest3328583-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		20:07:370
3306634998863,18cyclictest3328583-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		20:07:370
3306634998857,14cyclictest3341459-21kworker/0:0+events@
igb_watchdog_task		20:35:360
3306634998855,19cyclictest3321118-21kworker/0:1+events@
igb_watchdog_task		20:25:220
3306634998853,16cyclictest3548461-21kworker/0:0+events@
igb_watchdog_task		23:55:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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