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2026-09-28 - 17:36
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 100 highest latencies:
System rack3slot4.osadl.org (updated Mon Sep 28, 2026 12:46:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
669269234073378,17sleep0187257-21kworker/0:2+events@
dbs_work_handler		07:07:170
6691612809790,9sleep1661378-21kworker/1:3+events@
dbs_work_handler		07:05:461
669631991202,109cyclictest0-21swapper/009:00:410
669631991152,90cyclictest0-21swapper/012:35:230
6696319911511,67cyclictest740643-21kworker/u12:2+nfsiod@
rpc_async_release		09:55:200
66963699114100,7cyclictest800227-21kworker/u12:4+events_unbound@
flush_memcg_stats_dwork		10:40:531
66963699114100,7cyclictest800227-21kworker/u12:4+events_unbound@
flush_memcg_stats_dwork		10:40:531
66965499113106,3cyclictest0-21swapper/509:00:335
6696319911375,24cyclictest1267-21runrttasks11:12:030
6696319911367,36cyclictest67450irq/528-eth0-Tx11:30:410
669631991132,99cyclictest0-21swapper/010:40:430
669631991132,99cyclictest0-21swapper/010:40:430
669631991132,89cyclictest0-21swapper/011:06:510
6696319911271,31cyclictest67550irq/529-eth0-Tx08:40:330
669631991122,99cyclictest0-21swapper/010:06:330
669631991122,99cyclictest0-21swapper/010:06:330
669631991112,66cyclictest901793-21kworker/u12:0+ext4-rsv-conversion@
ext4_end_io_rsv_work		11:40:020
6696319911111,61cyclictest13-21ksoftirqd/011:45:290
669631991098,89cyclictest0-21swapper/010:46:130
669631991091,95cyclictest210-21kswapd011:55:250
669631991091,95cyclictest210-21kswapd011:55:240
6696369910895,6cyclictest800227-21kworker/u12:4+events_unbound@
flush_memcg_stats_dwork		10:25:521
6696319910860,36cyclictest0-21swapper/010:25:010
6696319910849,38cyclictest0-21swapper/009:15:590
6696319910849,38cyclictest0-21swapper/009:15:590
669631991081,93cyclictest825044-21sed10:35:450
6696319910767,21cyclictest0-21swapper/009:40:230
6696319910753,35cyclictest0-21swapper/012:20:130
6696319910743,29cyclictest0-21swapper/009:27:170
669631991072,93cyclictest0-21swapper/012:15:200
669631991072,5cyclictest817009-21/usr/sbin/munin10:30:210
6696319910653,27cyclictest0-21swapper/009:50:310
6696319910572,22cyclictest67350irq/527-eth0-Tx10:10:430
6696319910531,50cyclictest852260-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		11:00:520
669631991052,84cyclictest0-21swapper/008:00:000
6696319910358,33cyclictest15-21rcuc/010:25:170
6696319910358,25cyclictest0-21swapper/009:14:330
6696319910352,35cyclictest0-21swapper/008:55:170
669631991032,97cyclictest0-21swapper/010:55:450
6696319910267,23cyclictest67350irq/527-eth0-Tx08:20:410
6696319910256,30cyclictest0-21swapper/007:25:300
669631991022,84cyclictest0-21swapper/012:05:130
669631991022,7cyclictest670071-21aten2_r3power_v07:10:180
92451121010,4sleep20-21swapper/211:55:222
92451121010,4sleep20-21swapper/211:55:212
6696319910156,32cyclictest67450irq/528-eth0-Tx11:25:250
669631991012,77cyclictest15-21rcuc/008:35:420
669631991011,80cyclictest0-21swapper/011:20:010
6696409910087,7cyclictest750457-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		10:15:502
6696319910050,32cyclictest1267-21runrttasks08:45:330
669636999986,7cyclictest837875-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		11:56:101
669636999986,7cyclictest837875-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		11:56:091
66963199992,91cyclictest703031-21ld08:30:330
669640999885,7cyclictest719380-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		09:20:432
669631999860,23cyclictest67450irq/528-eth0-Tx08:15:370
669631999860,23cyclictest67450irq/528-eth0-Tx08:15:360
669631999855,28cyclictest67650irq/530-eth0-Tx11:50:360
669631999850,39cyclictest0-21swapper/009:20:390
669631999850,32cyclictest0-21swapper/012:30:170
669631999848,33cyclictest0-21swapper/007:40:350
66963199982,5cyclictest785374-21sed10:05:010
66963199982,5cyclictest785374-21sed10:05:010
669640999783,7cyclictest698110-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		09:30:442
669631999757,30cyclictest67350irq/527-eth0-Tx12:02:340
669631999754,32cyclictest67350irq/527-eth0-Tx12:25:280
669631999741,19cyclictest0-21swapper/011:20:310
669631999735,33cyclictest67550irq/529-eth0-Tx10:15:340
66963199972,90cyclictest943426-21cat12:10:200
66963199962,5cyclictest9074222sleep011:41:170
669631999536,35cyclictest0-21swapper/009:50:010
66963199952,8cyclictest710931-21needreboot08:50:230
669649999488,3cyclictest0-21swapper/409:50:464
669631999441,26cyclictest0-21swapper/010:50:240
669631999426,44cyclictest13-21ksoftirqd/009:30:380
669654999389,2cyclictest0-21swapper/509:40:445
669631999360,24cyclictest0-21swapper/008:25:100
669631999351,30cyclictest0-21swapper/007:35:370
669631999344,26cyclictest0-21swapper/007:15:360
66963199932,3cyclictest0-21swapper/007:25:010
66963199912,83cyclictest6957212sleep008:14:210
9030942890,5sleep20-21swapper/211:38:232
669631998944,33cyclictest0-21swapper/007:45:330
669631998939,33cyclictest15-21rcuc/008:05:420
66963199892,82cyclictest0-21swapper/007:50:250
66963199892,82cyclictest0-21swapper/007:50:250
669631998735,30cyclictest0-21swapper/007:30:270
669631998733,37cyclictest717182-21open_files09:05:390
669631998729,33cyclictest698110-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		09:35:150
669649998473,6cyclictest966463-21ssh12:28:474
669631998443,22cyclictest0-21swapper/008:00:290
9463342830,3chrt0-21swapper/112:12:231
669636998370,7cyclictest837875-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		12:16:131
669636998369,7cyclictest837875-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		12:31:141
669649998265,9cyclictest721386-21diskmemload-410:30:214
669654998177,2cyclictest0-21swapper/509:50:465
669636998159,6cyclictest740643-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		10:02:461
669636998159,6cyclictest740643-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		10:02:461
669645998066,7cyclictest683351-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		08:10:093
669636998065,8cyclictest830779-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		10:45:561
7729182780,4chrt0-21swapper/209:55:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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