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2026-08-15 - 19:16
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OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #e, slot #6

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.
Unexpectedly long latencies may be caused by SMIs
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 50 highest latencies:
System rackeslot6.osadl.org (updated Sat Aug 15, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
33023299145135,7cyclictest393323-21latency_hist10:25:001
33023099142136,4cyclictest359882-21kworker/u8:2+flush-179:008:45:220
33023099142132,7cyclictest417454-21latency_hist11:40:010
33023099140134,4cyclictest367632-21kworker/u8:2+events_unbound09:20:010
33023099137131,4cyclictest388524-21kworker/u8:1+flush-179:010:20:250
33023099133122,8cyclictest437064-21latency_hist12:40:020
33023099126121,3cyclictest334954-21kworker/u8:0+events_unbound07:40:230
33023099125118,5cyclictest328637-21kworker/u8:2+flush-179:007:15:270
33023099125116,7cyclictest398065-21kworker/u8:2+events_unbound10:55:200
33023299124116,5cyclictest420671-21kworker/u8:3+flush-179:012:10:001
3302329912399,21cyclictest412678-21latency_hist11:25:011
33023299121108,10cyclictest395162-21apt-get10:30:111
33023099119110,4cyclictest349860-21kworker/u8:0+events_unbound08:25:000
33023099118108,4cyclictest377117-21kworker/u8:0+events_unbound10:05:240
33023099117112,4cyclictest344191-21kworker/u8:1+flush-179:007:50:270
33023299116106,6cyclictest409482-21latency_hist11:15:011
33023099116111,4cyclictest349860-21kworker/u8:0+events_unbound08:25:250
33023099116110,4cyclictest420671-21kworker/u8:3+flush-179:012:15:200
33023099116110,4cyclictest420671-21kworker/u8:3+flush-179:012:15:190
33023099115105,8cyclictest398096-21latency_hist10:40:010
33023099114109,3cyclictest398065-21kworker/u8:2+events_unbound11:25:140
33023099114108,4cyclictest344191-21kworker/u8:1+events_unbound07:55:200
33023099114103,4cyclictest328637-21kworker/u8:2+events_unbound07:20:250
33023099113108,4cyclictest415830-21kworker/u8:1+flush-179:011:40:150
33023099113108,3cyclictest420004-21kworker/u8:2+events_unbound11:45:260
33023099112107,4cyclictest377117-21kworker/u8:0+flush-179:009:55:240
33023099112103,6cyclictest374841-21kworker/u8:1+flush-179:009:40:150
33023099111106,4cyclictest388524-21kworker/u8:1+events_unbound10:25:240
33023099111106,3cyclictest359882-21kworker/u8:2+flush-179:008:50:130
33023099111105,4cyclictest401564-21kworker/u8:0+flush-179:011:05:260
33023099108102,4cyclictest344820-21kworker/u8:2+events_unbound08:05:160
3302309910795,8cyclictest351411-21latency_hist08:15:020
33023099107101,4cyclictest377117-21kworker/u8:0+events_unbound10:10:180
33023099107100,4cyclictest324091-21kworker/u8:3+events_unbound07:10:190
3302329910697,6cyclictest341618-21latency_hist07:45:001
3302329910598,5cyclictest390361-21kworker/u8:2+flush-179:010:15:251
3302309910599,4cyclictest361211-21kworker/u8:3+flush-179:009:00:210
33023099105100,4cyclictest398065-21kworker/u8:2+flush-179:010:50:270
3302309910495,6cyclictest386954-21latency_hist10:05:000
3302329910394,6cyclictest344820-21kworker/u8:2+flush-179:008:10:211
3302309910398,4cyclictest420671-21kworker/u8:3+flush-179:012:30:260
3302309910397,4cyclictest359882-21kworker/u8:2+events_unbound08:40:150
3302309910297,4cyclictest398065-21kworker/u8:2+flush-179:011:20:250
3302309910297,4cyclictest349860-21kworker/u8:0+events_unbound08:35:140
3302309910296,4cyclictest408354-21kworker/u8:1+events_unbound11:15:210
3302309910295,5cyclictest361211-21kworker/u8:3+events_unbound09:05:260
3302309910293,3cyclictest388524-21kworker/u8:1+events_unbound10:40:150
3302309910293,3cyclictest388524-21kworker/u8:1+events_unbound10:40:140
3302309910292,3cyclictest398065-21kworker/u8:2+events_unbound10:45:150
3302309910195,4cyclictest374841-21kworker/u8:1+flush-179:009:35:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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