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2026-07-29 - 14:29
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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 Wed Jul 29, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
311436299142131,8cyclictest3137037-21kworker/u8:1+events_unbound21:20:001
311436099139127,9cyclictest1213033-21systemd-journal20:30:000
311436099138125,10cyclictest1213033-21systemd-journal19:15:010
311436299134121,10cyclictest1213033-21systemd-journal00:00:001
311436299134121,10cyclictest1213033-21systemd-journal00:00:001
311436099133121,8cyclictest3159601-21kworker/u8:2+flush-179:021:40:000
311436299132119,11cyclictest3120621-21latency_hist19:30:011
311436299130120,7cyclictest3161208-21latency_hist21:35:001
311436299128121,5cyclictest3210142-21kworker/u8:0+events_unbound00:10:011
311436299128121,5cyclictest3210142-21kworker/u8:0+events_unbound00:10:011
311436299125115,8cyclictest510-21rs:main1
311436299113107,5cyclictest3163122-21kworker/u8:0+events_unbound21:50:001
311436099112104,5cyclictest3129498-21kworker/u8:3+flush-179:020:10:160
311436099110105,3cyclictest3190122-21kworker/u8:1+flush-179:023:35:000
311436099110103,4cyclictest3137037-21kworker/u8:1+events_unbound21:15:260
31143609910796,8cyclictest3192240-21apt-get23:10:110
31143629910697,6cyclictest3178990-21latency_hist22:30:021
31143629910597,5cyclictest3183807-21kworker/u8:0+flush-179:022:55:241
31143609910598,5cyclictest3190122-21kworker/u8:1+events_unbound23:25:000
31143629910392,9cyclictest3195438-21apt-get23:20:131
31143629910294,5cyclictest3207966-21kworker/u8:3+flush-179:000:05:001
31143609910196,3cyclictest3129498-21kworker/u8:3+flush-179:020:20:230
31143629910093,5cyclictest3150052-21kworker/u8:0+flush-179:021:05:001
31143629910092,6cyclictest3207877-21kworker/u8:2+flush-179:000:20:251
31143609910092,5cyclictest3163122-21kworker/u8:0+events_unbound22:25:220
3114362999991,6cyclictest3176070-21apt-get22:20:121
3114360999992,5cyclictest3163122-21kworker/u8:0+events_unbound22:15:030
3114360999992,4cyclictest3153026-21kworker/u8:3+events_unbound21:10:260
3114360999990,7cyclictest3186978-21kworker/u8:3+events_unbound23:05:010
3114362999892,4cyclictest3112758-21kworker/u8:3+flush-179:019:10:181
3114362999890,6cyclictest3174460-21apt-get22:15:131
3114360999892,4cyclictest3169233-21kworker/u8:4+flush-179:022:05:210
3114360999891,4cyclictest3190122-21kworker/u8:1+events_unbound23:40:130
3114362999788,6cyclictest3137037-21kworker/u8:1+flush-179:021:10:011
3114360999791,4cyclictest3180570-21kworker/u8:1+flush-179:022:50:210
3114360999785,9cyclictest3132033-21latency_hist20:05:020
3114362999682,11cyclictest1213033-21systemd-journal19:45:001
3114360999689,4cyclictest3137037-21kworker/u8:1+flush-179:021:25:000
3114360999687,6cyclictest3100308-21kworker/u8:0+flush-179:019:15:220
3114362999588,5cyclictest3190122-21kworker/u8:1+events_unbound23:10:261
3114362999586,6cyclictest3137037-21kworker/u8:1+flush-179:021:25:221
3114360999589,4cyclictest3137037-21kworker/u8:1+flush-179:020:30:160
3114360999587,6cyclictest3207877-21kworker/u8:2+events_unbound00:25:000
3114360999585,7cyclictest3155248-21kworker/u8:0+flush-179:021:30:210
3114360999581,11cyclictest1213033-21systemd-journal19:50:000
3114362999489,4cyclictest3204983-21kworker/u8:1+events_unbound23:50:261
3114362999486,6cyclictest3198391-21kworker/u8:2+flush-179:023:40:001
3114362999481,10cyclictest3212738-21latency_hist00:15:001
3114362999387,4cyclictest3131453-21kworker/u8:1+events_unbound20:05:011
3114362999381,10cyclictest3163122-21kworker/u8:0+flush-179:022:00:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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