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2026-04-29 - 16:18

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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: 50.5 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rack5slot7s.osadl.org (updated Wed Apr 29, 2026 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12679224482206,97sleep00-21swapper07:07:480
129709916124,114cyclictest12784-21systemd-journal11:45:010
129709916114,123cyclictest29586-21apt-get12:06:400
129709915912,125cyclictest26872-21uname08:31:130
129709915817,117cyclictest16526-21apt-get07:31:260
129709915817,116cyclictest16079-21apt-get10:46:040
129709915816,25cyclictest2188-21munin-run09:20:010
129709915714,118cyclictest28768-21apt12:00:010
129709915615,117cyclictest6467-21/usr/sbin/munin09:45:370
129709915613,119cyclictest29305-21awk12:00:530
12970991559,121cyclictest21915-21latency08:00:410
12970991549,25cyclictest8609-21readlink10:00:010
129709915433,96cyclictest21531-21awk07:56:090
129709915419,108cyclictest678-21apt-get09:10:170
129709915416,22cyclictest13778-21munin-node07:15:060
129709915415,110cyclictest32446-21df_inode09:05:290
129709915412,24cyclictest18479-21apt-get07:40:140
129709915412,119cyclictest25514-21head08:21:020
129709915411,22cyclictest27339-21cstates11:50:220
129709915329,19cyclictest15034-21apt-get07:20:120
129709915317,24cyclictest19723-21df_inode11:05:290
129709915317,21cyclictest21919-21apt-get11:20:050
129709915314,24cyclictest13665-21munin-run10:30:010
129709915314,115cyclictest22063-21apt-get11:20:250
129709915313,111cyclictest30712-21/usr/sbin/munin12:11:060
129709915310,121cyclictest886-21cat12:25:420
12970991528,120cyclictest4356-21cut09:30:580
129709915219,106cyclictest25696-21apt-get08:25:170
129709915218,27cyclictest11179-21apt-get10:15:270
129709915214,23cyclictest14914-21munin-run07:20:020
129709915212,26cyclictest30991-21sort08:55:460
129709915210,118cyclictest6296-21sort09:45:050
12970991518,26cyclictest10143-21sed10:06:030
129709915120,102cyclictest29930-21apt-get08:50:200
129709915116,23cyclictest18655-21users10:56:070
129709915115,22cyclictest16528-21munin-run07:30:050
129709915112,23cyclictest25561-21munin-run11:40:020
129709915031,95cyclictest22857-21processes08:05:550
129709915018,105cyclictest24068-21apt-get08:15:170
129709915014,94cyclictest19826-21/usr/sbin/munin07:46:010
129709915014,22cyclictest23127-21apt-get11:25:330
129709915014,110cyclictest2130-21users12:31:050
129709915013,37cyclictest16031-21grep10:41:030
129709915012,115cyclictest32214-21apt12:20:010
129709915012,114cyclictest511-21sed12:21:030
129709915011,24cyclictest8867-21if_eth010:00:360
129709915011,113cyclictest20179-21diskstats07:50:330
12970991499,27cyclictest12600-21find10:21:020
129709914922,27cyclictest10427-21diskstats10:10:350
129709914918,111cyclictest4693-21kworker/u2:110:50:220
129709914917,27cyclictest7382-21/usr/sbin/munin09:50:480
129709914915,37cyclictest29134-21apt-get08:45:130
129709914914,113cyclictest17658-21apt-get07:35:110
129709914913,113cyclictest31652-21df_inode09:00:290
129709914913,111cyclictest19451-21sed11:01:020
129709914911,115cyclictest4801-21/usr/sbin/munin09:35:340
129709914828,22cyclictest0-21swapper08:35:120
129709914812,25cyclictest28337-21/usr/sbin/munin08:41:080
129709914717,23cyclictest3003-21munin-run09:25:020
129709914716,108cyclictest27253-21cat11:50:050
129709914712,113cyclictest24067-21apt-get11:30:180
129709914617,26cyclictest2970-21munin-run12:40:040
129709914613,107cyclictest15069-21cat10:35:580
129709914514,25cyclictest13762-21/usr/sbin/munin10:30:560
129709914418,102cyclictest3198-21df09:25:270
129709914416,26cyclictest20613-21/usr/sbin/munin11:10:400
129709914412,108cyclictest23977-21latency_hist08:15:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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