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2026-06-14 - 23:47

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 100 highest latencies:
System rack4slot1s.osadl.org (updated Sun Jun 14, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31482790,2chrt3149-21grep12:38:160
31482790,2chrt3149-21grep12:38:160
31482790,2chrt3149-21grep12:38:160
154312710,2sleep20-21swapper/211:47:532
154312710,2sleep20-21swapper/211:47:532
154312710,2sleep20-21swapper/211:47:532
273702620,2sleep027480-21df10:53:040
273702620,2sleep027480-21df10:53:040
273702620,2sleep027480-21df10:53:040
166482590,2chrt0-21swapper/008:58:020
166482590,2chrt0-21swapper/008:58:020
141462570,2chrt14135-21awk10:17:540
231352560,2sleep00-21swapper/007:48:070
231352560,2sleep00-21swapper/007:48:070
231352560,2sleep00-21swapper/007:48:070
56622550,7sleep0171ktimers/008:28:070
56622550,7sleep0171ktimers/008:28:070
56622550,7sleep0171ktimers/008:28:070
215162540,2sleep021619-21missed_timers07:43:090
215162540,2sleep021619-21missed_timers07:43:090
38062530,1sleep13008-21/usr/sbin/munin09:48:131
38062530,1sleep13008-21/usr/sbin/munin09:48:131
182822530,2sleep018286-21sed07:33:150
182822530,2sleep018286-21sed07:33:150
214592520,7sleep021463-21fschecks_time12:03:060
214592520,7sleep021463-21fschecks_time12:03:060
301472480,2sleep030152-21gltestperf09:33:070
301472480,2sleep030152-21gltestperf09:33:070
258982440,3sleep20-21swapper/207:53:152
258982440,3sleep20-21swapper/207:53:152
130042440,3sleep30-21swapper/308:48:043
60302430,4sleep30-21swapper/308:28:103
60302430,4sleep30-21swapper/308:28:103
60302430,4sleep30-21swapper/308:28:103
14752430,2sleep10-21swapper/108:17:561
14752430,2sleep10-21swapper/108:17:561
72102410,2sleep07213-21grep11:23:140
72102410,2sleep07213-21grep11:23:140
58472380,2sleep15963-21find09:53:151
58472380,2sleep15963-21find09:53:151
236022380,6chrt23600-21head09:13:170
236022380,6chrt23600-21head09:13:170
139072380,3sleep10-21swapper/108:48:141
139072380,3sleep10-21swapper/108:48:141
10262993830,6cyclictest14983-21unixbench_multi11:43:161
10262993830,6cyclictest14983-21unixbench_multi11:43:161
10262993830,6cyclictest14983-21unixbench_multi11:43:161
57312370,2sleep00-21swapper/009:53:140
57312370,2sleep00-21swapper/009:53:140
224892370,1sleep122485-21strings10:38:091
224892370,1sleep122485-21strings10:38:091
18162360,1sleep11864-21awk09:43:101
18162360,1sleep11864-21awk09:43:101
18162360,1sleep11864-21awk09:43:101
10261993628,6cyclictest27116-21threads09:23:150
10261993628,6cyclictest27116-21threads09:23:150
10261993628,6cyclictest27116-21threads09:23:150
204292350,1sleep019873-21/usr/sbin/munin10:33:060
10261993527,6cyclictest550-21cron10:47:530
10261993527,6cyclictest550-21cron10:47:530
10261993527,6cyclictest550-21cron10:47:530
10261993527,6cyclictest550-21cron10:47:530
10262993428,4cyclictest547-21rs:main1
10262993428,4cyclictest547-21rs:main1
10262993425,7cyclictest25432-21latency_hist10:47:571
10262993425,7cyclictest25432-21latency_hist10:47:571
10262993425,7cyclictest25432-21latency_hist10:47:571
10262993425,7cyclictest25432-21latency_hist10:47:571
10262993423,3cyclictest181rcu_preempt07:54:141
10262993423,3cyclictest181rcu_preempt07:54:141
10262993421,3cyclictest181rcu_preempt12:03:451
10262993421,3cyclictest181rcu_preempt12:03:451
10262993421,3cyclictest181rcu_preempt12:03:451
10261993427,5cyclictest4566-21fschecks_time11:18:050
263252330,2sleep026495-21if_eth009:23:070
263252330,2sleep026495-21if_eth009:23:070
263252330,2sleep026495-21if_eth009:23:070
10262993327,5cyclictest19386-21processes09:03:131
10262993327,5cyclictest19386-21processes09:03:131
10262993326,5cyclictest18777-21needreboot10:28:131
10262993326,5cyclictest18777-21needreboot10:28:131
10262993326,5cyclictest18777-21needreboot10:28:131
10262993324,7cyclictest2567-21fschecks_count11:13:041
10262993324,7cyclictest2567-21fschecks_count11:13:041
10261993319,11cyclictest0-21swapper/012:23:060
10261993319,11cyclictest0-21swapper/012:23:060
10261993319,11cyclictest0-21swapper/012:23:060
94492320,1sleep19476-21ntp_states10:03:121
94492320,1sleep19476-21ntp_states10:03:121
84182320,3sleep20-21swapper/211:28:072
84182320,3sleep20-21swapper/211:28:072
84182320,3sleep20-21swapper/211:28:072
10262993228,3cyclictest17499-21processes08:58:121
10262993228,3cyclictest17499-21processes08:58:121
10262993228,3cyclictest10344-21head11:33:051
10262993228,3cyclictest10344-21head11:33:051
10262993225,5cyclictest4506-21fschecks_count11:18:051
10262993225,5cyclictest30740-21cut12:28:041
10262993225,5cyclictest30740-21cut12:28:041
10262993211,5cyclictest281ktimers/108:40:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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