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2026-08-04 - 00:31
OSADL QA Farm

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 Mon Aug 03, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
135691799136126,7cyclictest1387404-21latency_hist08:45:001
135691699126117,7cyclictest1429332-21apt-get10:55:010
135691699124114,7cyclictest1388991-21latency_hist08:50:000
13569169912190,21cyclictest1369829-21latency_hist07:50:010
135691699118110,6cyclictest1392856-21kworker/u8:0+flush-179:009:30:240
135691799117111,4cyclictest1374871-21kworker/u8:1+events_unbound08:05:241
135691799114110,3cyclictest1353585-21kworker/u8:2+events_unbound07:50:251
135691799110106,3cyclictest1353585-21kworker/u8:2+events_unbound07:55:281
13569179910797,8cyclictest1416301-21kworker/u8:2+flush-179:010:15:221
13569179910792,13cyclictest1442032-21kworker/u8:1+flush-179:012:15:001
13569179910694,9cyclictest1439406-21latency_hist11:25:011
13569179910594,4cyclictest1353585-21kworker/u8:2+events_unbound07:40:181
135691799105100,4cyclictest1361569-21kworker/u8:3+flush-179:007:34:551
13569169910578,8cyclictest1213033-21systemd-journal12:10:000
13569179910089,8cyclictest1431685-21kworker/u8:3+flush-179:011:20:001
13569169910088,9cyclictest1213033-21systemd-journal12:40:000
1356917999995,3cyclictest1437863-21kworker/u8:0+events_unbound12:00:201
1356917999993,4cyclictest1392856-21kworker/u8:0+events_unbound09:40:141
1356917999894,3cyclictest1382615-21kworker/u8:3+flush-179:008:55:281
1356916999887,9cyclictest1213033-21systemd-journal12:35:010
1356917999792,4cyclictest1421089-21kworker/u8:2+events_unbound10:40:271
1356917999792,4cyclictest1418169-21kworker/u8:0+events_unbound10:20:261
1356917999792,4cyclictest1418169-21kworker/u8:0+events_unbound10:20:261
1356917999790,5cyclictest510-21rs:main1
1356917999590,4cyclictest1419497-21kworker/u8:1+events_unbound10:25:191
1356916999588,4cyclictest1353585-21kworker/u8:2+flush-179:007:40:140
1356916999587,5cyclictest1429354-21kworker/u8:0+flush-179:011:00:230
1356917999489,4cyclictest1382615-21kworker/u8:3+events_unbound09:10:171
1356917999388,4cyclictest1442032-21kworker/u8:1+flush-179:011:40:281
1356917999387,4cyclictest1408395-21kworker/u8:2+flush-179:010:05:151
1356916999385,5cyclictest1369873-21kworker/u8:0+flush-179:008:00:230
1356917999287,3cyclictest1406755-21kworker/u8:1+events_unbound09:45:171
1356917999283,3cyclictest1400126-21kworker/u8:3+events_unbound09:55:251
1356917999181,7cyclictest1403321-21latency_hist09:35:011
1356917999180,9cyclictest1213033-21systemd-journal11:50:001
1356916999179,10cyclictest1379649-21apt-get08:20:110
1356917998884,3cyclictest1353585-21kworker/u8:2+events_unbound07:35:281
1356917998884,3cyclictest1353585-21kworker/u8:2+events_unbound07:35:281
1356917998883,3cyclictest1422729-21kworker/u8:3+events_unbound10:35:211
1356922998780,5cyclictest1408371-21turbostat09:50:013
1356917998782,4cyclictest1431685-21kworker/u8:3+events_unbound11:10:271
1356916998778,7cyclictest510-21rs:main0
1356917998682,3cyclictest1381015-21kworker/u8:2+events_unbound08:34:561
1356917998678,5cyclictest1456914-21latency_hist12:20:011
1356916998677,7cyclictest1411555-21latency_hist10:00:010
1356916998575,7cyclictest1353585-21kworker/u8:2+flush-179:008:10:110
1356917998478,5cyclictest1421089-21kworker/u8:2+flush-179:010:50:221
1356917998478,4cyclictest1374871-21kworker/u8:1+events_unbound08:25:151
1356916998475,6cyclictest1374871-21kworker/u8:1+flush-179:008:25:140
1356916998465,17cyclictest1363180-21latency_hist07:30:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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