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2026-08-08 - 05:10

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 the 792 highest latencies:
System rack5slot7s.osadl.org (updated Sat Aug 08, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15710224422200,98sleep00-21swapper19:06:240
161599916320,115cyclictest21964-21apt-get22:55:230
161599916218,24cyclictest28657-21diskstats23:35:320
161599916128,17cyclictest0-21swapper19:40:050
161599916011,25cyclictest18099-21apt-get19:21:310
161599915936,21cyclictest14384-21latency_hist22:10:070
161599915922,28cyclictest32569-21diskstats20:40:350
161599915843,23cyclictest4902-21latency_hist00:30:050
161599915817,115cyclictest23421-21apt-get19:51:240
161599915812,121cyclictest23155-21wc19:45:570
16159991579,124cyclictest16285-21grep22:20:060
161599915716,27cyclictest2411-21munin-run00:15:020
161599915713,120cyclictest6537-21diskstats21:20:310
161599915621,106cyclictest16256-21apt-get19:10:200
161599915616,98cyclictest21856-21sort22:55:060
161599915611,122cyclictest27012-21/usr/sbin/munin23:25:200
161599915522,29cyclictest32577-21apt-get00:00:210
161599915515,115cyclictest26746-21timerwakeupswit23:21:020
161599915514,23cyclictest12924-21wc22:00:230
161599915514,118cyclictest16478-21irqstats22:20:410
161599915511,28cyclictest30018-21dpkg20:25:320
161599915437,20cyclictest11512-21ntpq21:50:470
161599915428,16cyclictest0-21swapper00:21:250
161599915416,114cyclictest25333-21apt-get23:15:170
161599915416,113cyclictest24709-21irqstats23:10:370
161599915414,115cyclictest14505-21apt-get22:10:240
161599915413,22cyclictest19946-21apt-get19:31:390
161599915413,118cyclictest31743-21diskstats20:35:310
161599915317,20cyclictest19256-21apt-get19:25:170
161599915315,114cyclictest28042-21apt-get20:15:260
161599915314,99cyclictest24597-21apt-get19:55:360
161599915314,24cyclictest26481-21diskstats20:05:320
161599915313,24cyclictest18323-21find22:30:560
161599915218,105cyclictest27167-21apt-get20:10:170
161599915217,22cyclictest12727-21munin-run22:00:030
161599915216,24cyclictest4910-21diskstats21:10:310
161599915216,112cyclictest29208-21uname20:20:480
161599915212,27cyclictest31417-21cut23:50:560
161599915211,26cyclictest28308-21/usr/sbin/munin23:31:010
161599915211,117cyclictest4003-21/usr/sbin/munin21:06:010
161599915139,90cyclictest18800-21diskstats22:35:310
161599915130,22cyclictest0-21swapper19:15:410
161599915120,104cyclictest7463-21memory21:25:430
161599915115,114cyclictest23051-21df23:00:320
161599915111,100cyclictest10511-21wc21:45:240
161599915016,92cyclictest1027-21diskstats00:05:310
161599915016,110cyclictest795-21apt-get20:45:200
161599915015,24cyclictest31863-21diskstats23:55:320
161599915014,110cyclictest25750-21irqstats20:00:440
161599914918,37cyclictest30063-21apt23:45:000
161599914917,108cyclictest5041-21diskstats00:30:330
161599914913,110cyclictest1589-21apt-get20:50:180
161599914912,23cyclictest8875-21cstates21:35:230
161599914819,27cyclictest8118-21df21:30:270
161599914818,26cyclictest30165-21apt-get23:45:200
161599914818,104cyclictest20305-21/usr/sbin/munin22:45:230
161599914817,22cyclictest9636-21apt-get21:40:190
161599914814,110cyclictest17795-21munin-run22:30:000
161599914812,23cyclictest3222-21cat00:20:010
161599914715,22cyclictest3311-21df21:00:270
161599914710,40cyclictest30449-1kworker/u3:420:30:160
16159991465,117cyclictest24111-21ps23:05:530
161599914618,25cyclictest2486-21df20:55:270
161599914615,28cyclictest22251-21/usr/sbin/munin19:40:480
161599914611,24cyclictest6133-21grep21:16:010
161599914510,111cyclictest5790-21cstates00:35:240
161599914420,26cyclictest19623-21diskstats22:40:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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