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2025-12-24 - 21:57

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 Wed Dec 24, 2025 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1053622630,3sleep010538-21timerandwakeup10:15:290
1256121380,2sleep012557-21cat10:25:020
270319912430,16cyclictest6106-21/usr/sbin/munin12:05:180
270319912226,83cyclictest32371-21/usr/sbin/munin07:30:150
270319912010,18cyclictest11187-21df12:25:140
27031991199,15cyclictest25963-21ntpq09:10:210
270319911911,17cyclictest16401-21wc10:40:020
270319911831,13cyclictest519-21runrttasks11:43:520
2084021180,4chrt20841-21/usr/sbin/munin08:50:240
27031991179,15cyclictest30208-21runrttasks07:20:290
270319911728,14cyclictest25242-21runrttasks11:14:050
731321160,4chrt7311-21df_inode12:10:150
270319911631,14cyclictest12422-21runrttasks08:18:270
270319911629,16cyclictest14438-21runrttasks12:36:360
270319911628,15cyclictest32106-21runrttasks07:29:290
270319911529,14cyclictest18811-21runrttasks08:42:460
270319911527,15cyclictest6120-21runrttasks07:54:460
270319911527,14cyclictest27010-21/usr/sbin/munin09:15:120
270319911527,14cyclictest23374-21runrttasks09:00:210
270319911527,14cyclictest22643-21runrttasks08:57:390
27031991149,18cyclictest32327-21memory09:35:220
270319911433,71cyclictest24897-21/usr/sbin/munin09:05:260
270319911429,13cyclictest2114-21runrttasks09:44:550
270319911427,15cyclictest27892-21runrttasks07:11:450
270319911427,14cyclictest14637-21runrttasks08:25:280
27031991139,17cyclictest2448-21memory09:45:160
27031991138,22cyclictest29731-21grep09:25:170
27031991137,13cyclictest8648-21latency_hist10:10:010
270319911331,71cyclictest17749-21runrttasks08:39:510
270319911326,16cyclictest5352-21runrttasks12:01:010
270319911326,14cyclictest9796-21runrttasks10:14:290
270319911310,17cyclictest8887-21/usr/sbin/munin08:05:280
27031991129,28cyclictest12415-21/usr/sbin/munin12:30:160
270319911225,13cyclictest23772-21runrttasks11:07:300
270319911211,15cyclictest19424-21sshd08:45:200
270319911131,14cyclictest7353-21runrttasks07:59:210
270319911128,13cyclictest19714-21runrttasks10:51:030
270319911113,21cyclictest7782-21memory08:00:190
27031991109,19cyclictest10169-21/usr/sbin/munin08:10:310
27031991109,18cyclictest31838-21munin-run11:40:010
27031991109,17cyclictest792-21/usr/sbin/munin11:45:150
270319911026,12cyclictest16213-21runrttasks08:32:440
270319911024,14cyclictest30960-21if_eth009:30:170
270319911024,13cyclictest2366-21ntp_states11:50:210
270319911020,15cyclictest29245-21runrttasks09:23:290
270319911019,14cyclictest29252-21sshd07:17:190
270319911018,15cyclictest12770-21cpu08:20:100
270319911011,19cyclictest8528-21/usr/sbin/munin12:15:310
27031991099,20cyclictest26956-21runrttasks11:20:180
27031991098,19cyclictest1126-21/usr/sbin/munin07:35:110
270319910917,14cyclictest4049-21/usr/sbin/munin07:45:240
270319910911,18cyclictest6192-21df10:00:140
27031991088,28cyclictest17816-21chrt10:45:130
270319910811,21cyclictest29658-21ntpq11:30:240
270319910811,17cyclictest20371-21df10:55:120
27031991079,26cyclictest28159-21df_inode11:25:140
270319910722,14cyclictest16846-21processes10:40:250
270319910720,15cyclictest4334-21runrttasks11:58:310
270319910710,21cyclictest25615-21sshd11:15:150
270319910710,18cyclictest216-21rs:main0
270319910628,14cyclictest3229-21runrttasks07:42:030
270319910621,13cyclictest276-21runrttasks10:30:200
270319910611,16cyclictest5019-21memory09:55:200
270319910611,14cyclictest12738-21irqstats10:25:170
270319910610,15cyclictest21915-21ntpq11:00:230
27031991057,22cyclictest3835-21ntp_states09:50:230
2641627019,29sleep026424-21users07:05:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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