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2026-05-03 - 21:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, 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.

Total number of samples: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack4slot6s.osadl.org (updated Sun May 03, 2026 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268922660,3sleep02691-21latency10:15:160
1181922520,3sleep011818-21tr10:50:180
110921260,5chrt1107-21df_inode12:15:130
1919621250,2chrt19197-21modprobe11:20:010
1068721240,3chrt10684-21ntpq08:40:210
195179912322,14cyclictest23128-21runrttasks07:23:020
1703321230,4chrt17032-21/usr/sbin/munin11:10:230
19517991199,15cyclictest25869-21seq07:34:290
19517991198,15cyclictest32421-21/usr/sbin/munin10:05:250
19517991198,14cyclictest14216-21df_inode11:00:130
648921180,2sleep06491-21ls10:30:140
19517991188,16cyclictest27248-21/usr/sbin/munin09:45:260
195179911832,74cyclictest9328-21/usr/sbin/munin10:40:250
19517991177,17cyclictest30224-21/usr/sbin/munin09:55:260
19517991169,14cyclictest15511-21/usr/sbin/munin11:05:140
19517991167,16cyclictest27568-21/usr/sbin/munin07:40:170
195179911620,11cyclictest5393-21ntp_kernel_pll_10:25:210
195179911610,18cyclictest21185-21ntp_states07:15:220
19517991159,15cyclictest27270-21latency_hist07:40:020
19517991159,14cyclictest1154-21chrt08:04:210
19517991159,13cyclictest150712sleep008:56:500
19517991158,15cyclictest28347-21/usr/sbin/munin11:55:250
19517991158,12cyclictest1558-21memory08:05:180
19517991157,13cyclictest5317-21df_inode08:20:140
19517991149,16cyclictest4219-21ntp_states08:15:220
19517991148,16cyclictest6572-21seq12:35:260
19517991147,17cyclictest22363-21ntpq09:25:220
195179911433,69cyclictest30051-21/usr/sbin/munin07:50:140
195179911411,16cyclictest246442chrt09:35:060
19517991139,17cyclictest32704-21/usr/sbin/munin12:10:260
19517991138,16cyclictest5014-21forks12:30:130
19517991138,15cyclictest3570-21sed12:25:020
19517991138,14cyclictest7743-21df10:35:140
19517991137,17cyclictest18387-21memory09:10:170
19517991137,14cyclictest4868-21cat12:30:020
195179911329,73cyclictest2709-21/usr/sbin/munin08:10:120
3138421120,4chrt31386-21latency07:55:180
19517991129,16cyclictest1528-21ntp_states10:10:230
19517991129,14cyclictest31236-21ntp_states12:05:220
19517991129,12cyclictest20707-21idleruntime11:25:140
19517991128,15cyclictest22023-21latency_hist09:25:010
19517991128,14cyclictest26391-21tr09:40:260
195179911228,71cyclictest19617-21/usr/sbin/munin07:10:220
195179911210,17cyclictest11982-21ntp_states08:45:220
195179911210,14cyclictest19486-21/usr/sbin/munin09:15:310
19517991119,18cyclictest29844-21memory12:00:180
19517991119,14cyclictest26937-21latency_hist11:50:010
19517991118,15cyclictest25532-21seq11:44:060
19517991118,15cyclictest23247-21df_inode11:35:140
19517991118,14cyclictest23856-21ps07:25:260
19517991116,14cyclictest13166-21memory08:50:180
195179911110,14cyclictest15616-21/usr/sbin/munin09:00:310
19517991108,13cyclictest10468-21memory10:45:180
19517991107,15cyclictest20161-21runrttasks11:22:180
19517991106,16cyclictest23784-21which09:30:250
19517991098,15cyclictest18144-21latency_hist09:10:020
19517991098,12cyclictest6840-21ntpq08:25:250
19517991097,15cyclictest8270-21mailstats08:30:260
19517991097,15cyclictest21889-21seq11:30:060
19517991096,14cyclictest9517-21systemctl08:35:250
195179910927,71cyclictest114-21systemd-journal10:02:100
195179910910,16cyclictest13141-21ntp_states10:55:240
19517991089,15cyclictest28661-21/usr/sbin/munin07:45:310
195179910812,15cyclictest4408-21wc10:20:280
19517991078,14cyclictest29334-21seq09:52:080
19517991077,14cyclictest27495-21mailstats11:50:260
19517991028,15cyclictest19484-21latency_hist07:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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