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2026-01-31 - 14:16
[ 290.152] (II) VESA: driver for VESA chipsets: vesa

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack4slot1s.osadl.org (updated Sat Jan 31, 2026 12:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2848621060,2chrt28487-21/usr/sbin/munin09:46:120
108522840,3sleep30-21swapper/311:55:473
209602670,2sleep120964-21latency12:21:021
209602670,2sleep120964-21latency12:21:021
6862620,3sleep30-21swapper/308:35:483
62022530,4sleep20-21swapper/211:41:072
62022530,4sleep20-21swapper/211:41:072
185762530,3sleep10-21swapper/112:16:001
185762530,3sleep10-21swapper/112:16:001
185762530,3sleep10-21swapper/112:16:001
82642520,3sleep20-21swapper/208:55:502
82642520,3sleep20-21swapper/208:55:502
32352500,3chrt0-21swapper/310:06:093
247542500,3sleep20-21swapper/208:11:072
247542500,3sleep20-21swapper/208:11:072
35572490,3chrt0-21swapper/110:06:111
84232470,2sleep18425-21latency_hist08:55:561
84232470,2sleep18425-21latency_hist08:55:561
266742460,3chrt0-21swapper/208:16:092
266742460,3chrt0-21swapper/208:16:092
266242450,3sleep126669-21proc_pri08:16:091
266242450,3sleep126669-21proc_pri08:16:091
53792440,3sleep10-21swapper/107:21:011
193052430,4sleep118400-21/usr/sbin/munin07:56:101
193052430,4sleep118400-21/usr/sbin/munin07:56:101
241522420,3sleep30-21swapper/312:30:573
204522400,3sleep20-21swapper/209:26:082
1591994032,6cyclictest545-21in:imuxsock07:56:020
1591994032,6cyclictest545-21in:imuxsock07:56:020
12032390,3sleep01201-21ntp_states10:01:070
12032390,3sleep01201-21ntp_states10:01:070
268402380,3sleep026843-21fschecks_time11:10:580
268402380,3sleep026843-21fschecks_time11:10:580
1598993829,7cyclictest12911-21netstat09:06:061
1591993727,4cyclictest181rcu_preempt11:53:140
1598993628,6cyclictest10514-21netstat10:26:051
1598993628,6cyclictest10514-21netstat10:26:051
56092350,2sleep30-21swapper/307:21:033
305742350,2sleep130750-21sed08:26:101
305742350,2sleep130750-21sed08:26:101
1591993529,4cyclictest15166-21gltestperf12:06:010
34652340,1sleep03537-21gzip08:41:040
34652340,1sleep03537-21gzip08:41:040
209482340,3sleep00-21swapper/010:55:550
209482340,3sleep00-21swapper/010:55:550
1598993423,8cyclictest17740-21latency_hist09:20:541
1598993423,8cyclictest17740-21latency_hist09:20:541
1598993423,8cyclictest17740-21latency_hist09:20:541
159199347,22cyclictest171ktimers/008:24:480
159199347,22cyclictest171ktimers/008:24:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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