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2026-03-24 - 16:43
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 Tue Mar 24, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
569293999277,12cyclictest639809-21apt-get10:50:010
569294999181,7cyclictest625489-21latency_hist10:05:011
569293999178,9cyclictest648045-21kworker/u8:3+flush-179:011:25:240
569294998985,3cyclictest591791-21kworker/u8:3+events_unbound08:55:001
569294998984,4cyclictest648045-21kworker/u8:3+flush-179:011:25:281
569294998783,3cyclictest617517-21kworker/u8:1+events_unbound09:55:251
569294998783,3cyclictest617517-21kworker/u8:1+events_unbound09:55:251
569294998782,4cyclictest582244-21kworker/u8:0+flush-179:008:05:251
569294998780,5cyclictest617517-21kworker/u8:1+events_unbound09:50:021
569294998576,6cyclictest635028-21latency_hist10:35:011
569294998480,3cyclictest595251-21kworker/u8:0+events_unbound08:35:241
569294998474,7cyclictest266-21systemd-journal11:15:001
569293998475,7cyclictest660737-21latency_hist11:55:000
569294998377,4cyclictest576651-21kworker/u8:1+events_unbound07:40:241
569293998376,5cyclictest591791-21kworker/u8:3+events_unbound09:05:010
569293998375,5cyclictest617517-21kworker/u8:1+flush-179:009:55:220
569293998375,5cyclictest617517-21kworker/u8:1+flush-179:009:55:220
569294998277,4cyclictest659196-21kworker/u8:0+flush-179:012:25:281
569293998173,6cyclictest646458-21kworker/u8:2+flush-179:012:10:000
569294998075,4cyclictest598231-21kworker/u8:2+flush-179:008:45:261
569294997975,3cyclictest595251-21kworker/u8:0+events_unbound08:30:221
569294997874,3cyclictest627615-21kworker/u8:0+events_unbound10:10:241
569294997868,3cyclictest618900-21kworker/u8:3+events_unbound10:20:251
569293997868,7cyclictest644841-21latency_hist11:05:000
569294997772,4cyclictest656012-21kworker/u8:1+flush-179:011:55:261
569293997771,4cyclictest638999-21kworker/u8:2+flush-179:010:55:000
569294997671,4cyclictest656012-21kworker/u8:1+events_unbound11:40:211
569294997671,3cyclictest569258-21kworker/u8:2+events_unbound07:10:201
569294997571,3cyclictest615659-21kworker/u8:2+events_unbound09:35:251
569294997470,3cyclictest646458-21kworker/u8:2+events_unbound11:30:231
569294997469,4cyclictest631723-21kworker/u8:0+flush-179:010:25:201
569294997268,3cyclictest588672-21kworker/u8:2+flush-179:008:20:201
569294997267,4cyclictest606686-21kworker/u8:0+flush-179:009:10:271
569294997267,4cyclictest606686-21kworker/u8:0+flush-179:009:10:271
569293997261,8cyclictest576651-21kworker/u8:1+flush-179:008:10:220
569294997167,3cyclictest656012-21kworker/u8:1+flush-179:011:45:241
569294997166,4cyclictest606686-21kworker/u8:0+events_unbound09:30:241
569294996965,3cyclictest569258-21kworker/u8:2+flush-179:007:20:211
569294996964,4cyclictest618900-21kworker/u8:3+events_unbound10:05:201
569294996964,4cyclictest569258-21kworker/u8:2+events_unbound07:25:231
569293996963,4cyclictest659196-21kworker/u8:0+events_unbound12:30:000
569293996960,6cyclictest630250-21latency_hist10:20:010
569294996863,4cyclictest648045-21kworker/u8:3+flush-179:011:24:551
569294996863,4cyclictest576651-21kworker/u8:1+events_unbound08:10:271
569294996762,4cyclictest617517-21kworker/u8:1+flush-179:009:45:271
569293996760,5cyclictest598231-21kworker/u8:2+events_unbound08:45:010
569294996662,3cyclictest659196-21kworker/u8:0+flush-179:012:24:551
569294996662,3cyclictest638999-21kworker/u8:2+flush-179:011:00:281
569293996657,7cyclictest607958-21/usr/sbin/munin09:10:240
569293996657,7cyclictest607958-21/usr/sbin/munin09:10:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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