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2025-12-29 - 17:16
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 Dec 29, 2025 12:46:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
25398679916860,52cyclictest2701298-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		10:49:290
25398679916275,76cyclictest2555599-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		08:00:270
25398679915317,81cyclictest2539418-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		07:17:390
25398679913099,6cyclictest2664288-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		10:15:590
25398679913093,29cyclictest2644156-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		10:02:350
25398679912572,15cyclictest2778320-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		12:10:580
25398679912572,15cyclictest2778320-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		12:10:580
25398679912570,27cyclictest2692616-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		10:51:350
253987699121107,7cyclictest2575188-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		08:35:322
25398679911864,28cyclictest2592922-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		09:25:230
25398679911862,33cyclictest2685704-21kworker/u12:4+events_unbound@
flush_memcg_stats_dwork		11:04:450
253987199115101,7cyclictest2586217-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		09:10:371
25398679911364,26cyclictest2707282-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		11:11:060
253986799113104,5cyclictest210-21kswapd010:55:070
25398679911262,27cyclictest2748193-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		11:43:530
25398719911097,6cyclictest2592922-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		09:30:421
25398719911097,6cyclictest2592922-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		09:30:421
253989099108102,2cyclictest0-21swapper/512:20:275
253989099108102,2cyclictest0-21swapper/512:20:275
25398679910761,24cyclictest2586217-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		09:16:310
25398679910659,25cyclictest2575188-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		08:39:180
25398909910595,7cyclictest0-21swapper/510:15:175
25398769910490,7cyclictest2616291-21kworker/u12:4+events_unbound@
flush_memcg_stats_dwork		09:35:412
25398909910296,3cyclictest0-21swapper/508:10:285
25398909910195,3cyclictest0-21swapper/507:35:165
25398909910195,3cyclictest0-21swapper/507:35:165
25398869910190,5cyclictest0-21swapper/411:05:124
25398719910191,7cyclictest210-21kswapd012:25:011
25398719910191,7cyclictest210-21kswapd012:25:011
25398679910191,7cyclictest2707282-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		11:19:140
25398679910172,21cyclictest0-21swapper/009:32:250
25398679910172,21cyclictest0-21swapper/009:32:240
2539871999983,8cyclictest2657883-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		10:25:271
2539871999983,8cyclictest2657883-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		10:25:271
2539867999862,29cyclictest2800481-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		12:20:370
2539867999862,29cyclictest2800481-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		12:20:370
2539871999787,4cyclictest2568503-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		08:25:311
2539871999681,7cyclictest2768906-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		12:30:341
2539867999687,6cyclictest2611502-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		09:44:340
2539867999684,6cyclictest2579892-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		10:06:410
2539867999546,27cyclictest2575188-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		08:41:310
2539886999487,3cyclictest0-21swapper/412:35:124
2539876999481,7cyclictest2742115-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		11:46:022
2539871999463,8cyclictest2579892-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		09:55:371
2539867999461,26cyclictest2579892-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		09:36:310
2539876999380,7cyclictest2692616-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		11:05:572
2539890999286,3cyclictest0-21swapper/507:25:115
2539880999280,6cyclictest2701298-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		10:52:333
2539876999282,6cyclictest210-21kswapd009:30:062
2539876999282,6cyclictest210-21kswapd009:30:062
2539867999280,6cyclictest2748193-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		11:29:360
2539867999280,6cyclictest2673600-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		10:26:540
2539867999280,6cyclictest2673600-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		10:26:540
2539867999263,26cyclictest2611502-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		09:49:290
2539867999262,7cyclictest2768906-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		12:26:300
2539867999262,7cyclictest2768906-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		12:26:290
2539867999178,7cyclictest2543668-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		07:25:110
2539867999155,13cyclictest2778320-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		12:15:240
2539867999155,13cyclictest2778320-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		12:15:230
2539886999084,3cyclictest0-21swapper/410:30:504
2539886999084,3cyclictest0-21swapper/410:30:504
2539880999078,6cyclictest2778320-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		12:21:063
2539880999078,6cyclictest2778320-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		12:21:063
2539871999063,8cyclictest2611502-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		09:45:161
2539880998969,8cyclictest2809372-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		12:25:303
2539880998969,8cyclictest2809372-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		12:25:303
2539867998971,4cyclictest68950irq/527-eth0-Tx08:45:350
2539867998964,18cyclictest2822001-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		12:35:320
2539867998952,15cyclictest2545708-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		07:42:400
25891422880,5sleep00-21swapper/009:10:210
2539886998872,9cyclictest2756084-21ssh11:35:264
2539886998872,9cyclictest2756084-21ssh11:35:264
2539876998878,4cyclictest2742115-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		11:30:582
2539876998878,4cyclictest2742115-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		11:30:582
2539871998874,7cyclictest2692616-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		11:13:281
2539871998873,8cyclictest2536732-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		07:10:361
2539871998860,7cyclictest2644156-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		10:22:591
2539867998875,7cyclictest2748193-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		11:33:150
2539867998875,7cyclictest2748193-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		11:33:150
2539867998874,7cyclictest2735933-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		12:00:110
2539867998874,7cyclictest2579892-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		09:53:340
27588772870,5sleep015-21rcuc/011:38:010
27588772870,5sleep015-21rcuc/011:38:000
2539890998782,2cyclictest0-21swapper/511:50:135
2539886998781,3cyclictest0-21swapper/412:11:044
2539886998781,3cyclictest0-21swapper/412:11:044
2539886998671,8cyclictest2610238-21ssh09:30:064
2539886998671,8cyclictest2610238-21ssh09:30:064
2539871998672,7cyclictest2707282-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		11:25:001
2539867998676,6cyclictest210-21kswapd011:55:250
2539867998674,6cyclictest2543668-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		07:50:220
26914832850,3sleep015-21rcuc/010:40:120
2539890998581,1cyclictest0-21swapper/511:05:115
2539890998580,2cyclictest0-21swapper/509:10:335
2539880998576,6cyclictest210-21kswapd011:40:283
2539871998571,7cyclictest2592922-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		09:22:061
2539867998573,6cyclictest2541565-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		07:20:050
2539890998479,2cyclictest0-21swapper/512:35:125
2539880998473,5cyclictest2768906-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		11:56:543
2539876998470,7cyclictest2707282-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		11:25:582
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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