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2026-05-15 - 01:05
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 Thu May 14, 2026 12:46:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
3316996229702953,7sleep12593693-21kworker/1:2+events@
dbs_work_handler		07:05:391
331760399143104,20cyclictest3367596-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		09:17:360
331761199140125,8cyclictest3349884-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		08:35:361
331761199136123,6cyclictest3359796-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		09:00:401
331763799134120,8cyclictest3472714-21ssh10:35:534
331761199129115,7cyclictest3516542-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		11:21:061
331761199123109,7cyclictest3327996-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		08:15:271
331761199121106,8cyclictest3327996-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		08:20:311
331763799119113,3cyclictest0-21swapper/411:26:084
331761999118104,7cyclictest3292196-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		07:10:052
337277521170,5sleep30-21swapper/309:15:443
331761199115102,7cyclictest3327996-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		08:10:251
331761199115102,7cyclictest3327996-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		08:10:251
33176039911477,21cyclictest68950irq/527-eth0-Tx11:43:190
331764599113108,3cyclictest0-21swapper/507:45:115
33176289911399,7cyclictest3427669-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		10:05:503
33176119911387,14cyclictest3591810-21kworker/u12:4+events_unbound@
flush_memcg_stats_dwork		12:26:191
33176119911387,14cyclictest3591810-21kworker/u12:4+events_unbound@
flush_memcg_stats_dwork		12:26:191
3317603991021,86cyclictest3561667-21ssh11:47:270
3317603991011,90cyclictest0-21swapper/008:30:390
33176039910115,63cyclictest3452817-21if_err_eth110:20:220
3317603999971,12cyclictest0-21swapper/008:15:350
3317603999969,21cyclictest0-21swapper/007:21:390
3317603999966,23cyclictest68950irq/527-eth0-Tx09:10:150
331760399992,75cyclictest3591313-21users12:10:440
331760399991,89cyclictest0-21swapper/008:25:140
331760399991,85cyclictest0-21swapper/008:00:170
3317637999892,3cyclictest0-21swapper/407:35:114
3317619999834,9cyclictest3516542-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		11:21:192
3317603999866,22cyclictest69050irq/528-eth0-Tx10:19:420
3317628999783,7cyclictest3463382-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		10:44:393
3317603999762,22cyclictest69150irq/529-eth0-Tx08:45:010
331760399971,92cyclictest0-21swapper/007:45:130
331760399971,80cyclictest0-21swapper/007:15:230
331760399961,78cyclictest0-21swapper/007:10:300
3317603999617,46cyclictest3522022-21mailstats11:15:410
331760399959,7cyclictest3434980-21cat10:05:400
3317603999533,26cyclictest0-21swapper/010:39:170
331760399951,83cyclictest0-21swapper/011:37:040
331760399951,83cyclictest0-21swapper/009:55:320
331760399951,82cyclictest0-21swapper/009:42:240
331760399951,81cyclictest0-21swapper/009:00:330
331760399943,86cyclictest1350ksoftirqd/011:51:300
331760399941,80cyclictest0-21swapper/010:25:160
331760399941,79cyclictest3529589-21ssh11:21:350
331760399941,79cyclictest0-21swapper/008:57:390
331760399941,76cyclictest0-21swapper/011:27:240
331760399941,59cyclictest0-21swapper/009:45:340
3317603999363,14cyclictest68950irq/527-eth0-Tx08:50:130
3317603999361,22cyclictest68950irq/527-eth0-Tx08:45:130
3317603999361,22cyclictest68950irq/527-eth0-Tx08:45:130
3317603999345,23cyclictest0-21swapper/010:31:020
331760399933,69cyclictest3493656-21kworker/u12:3+events_unbound@
flush_memcg_stats_dwork		11:14:100
331760399932,75cyclictest0-21swapper/010:01:270
331760399931,75cyclictest0-21swapper/012:15:070
3317619999278,7cyclictest3610762-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		12:29:352
3317619999278,7cyclictest3610762-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		12:29:342
3317603999262,22cyclictest69150irq/529-eth0-Tx12:26:350
3317603999262,22cyclictest69150irq/529-eth0-Tx12:26:340
331760399922,78cyclictest34994382sleep010:57:590
331760399922,5cyclictest3336197-21/usr/sbin/munin07:55:170
331760399922,5cyclictest3336197-21/usr/sbin/munin07:55:170
331760399922,4cyclictest0-21swapper/008:15:010
331760399922,4cyclictest0-21swapper/008:15:010
331760399921,81cyclictest0-21swapper/009:32:350
331760399921,80cyclictest0-21swapper/008:05:300
331760399921,78cyclictest0-21swapper/007:30:310
331760399921,77cyclictest0-21swapper/007:50:310
331760399921,5cyclictest3503344-21ssh11:00:430
331760399921,5cyclictest3503344-21ssh11:00:420
33958272910,5sleep20-21swapper/209:35:012
331760399912,72cyclictest0-21swapper/011:32:270
331760399911,80cyclictest0-21swapper/010:47:420
331760399911,77cyclictest0-21swapper/007:40:350
331760399911,76cyclictest0-21swapper/011:55:030
331760399911,75cyclictest3382842-21ssh09:24:430
3317603999053,24cyclictest3366161-21diskmemload12:31:570
3317619998968,9cyclictest3562696-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		11:49:352
3317611998962,9cyclictest3427669-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		10:15:171
331760399891,83cyclictest0-21swapper/007:39:100
331760399891,77cyclictest0-21swapper/010:54:120
3317603998916,6cyclictest1350ksoftirqd/011:05:060
3317603998916,6cyclictest1350ksoftirqd/011:05:060
3317619998864,9cyclictest3516542-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		12:15:092
3317603998845,23cyclictest0-21swapper/012:08:570
331760399881,74cyclictest0-21swapper/010:10:450
3317611998773,7cyclictest3545766-21kworker/u12:1+events_unbound@
flush_memcg_stats_dwork		11:45:051
3317611998772,8cyclictest3323383-21kworker/u12:2+events_unbound@
flush_memcg_stats_dwork		07:35:351
3317611998754,7cyclictest3516542-21kworker/u12:0+events_unbound@
flush_memcg_stats_dwork		12:39:051
331760399871,74cyclictest0-21swapper/008:38:290
331760399871,71cyclictest0-21swapper/009:35:120
331760399871,58cyclictest0-21swapper/008:20:350
331760399862,61cyclictest0-21swapper/010:44:000
3317603998622,30cyclictest3581642-21ssh12:03:360
331760399861,80cyclictest0-21swapper/009:05:150
3317603998544,22cyclictest0-21swapper/009:26:110
3317603998544,22cyclictest0-21swapper/009:26:110
331760399851,61cyclictest0-21swapper/009:51:040
331760399851,60cyclictest0-21swapper/007:25:270
3317637998478,2cyclictest0-21swapper/412:10:174
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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