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2026-04-01 - 08:07

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 01, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12838224232179,98sleep00-21swapper19:08:550
130059916621,27cyclictest22624-21diskstats23:20:350
130059916316,123cyclictest25630-21munin-run20:25:010
130059916313,127cyclictest26309-21kworker/u2:1320:26:550
130059916222,31cyclictest32511-21apt-get00:25:220
130059916010,27cyclictest24411-21ls23:30:290
130059915918,100cyclictest18731-21apt-get23:02:000
130059915915,26cyclictest28366-21/usr/sbin/munin20:41:070
130059915912,27cyclictest17866-21grep22:51:030
130059915838,99cyclictest24258-21if_eth020:15:430
130059915720,26cyclictest16441-21apt-get22:45:170
130059915717,23cyclictest1750-21memory21:15:440
130059915618,22cyclictest31596-21munin-run00:20:020
130059915618,111cyclictest26747-21apt-get23:45:180
130059915617,117cyclictest23143-21apt-get20:10:260
130059915616,114cyclictest20397-21ntp_states23:06:390
130059915615,117cyclictest28337-21apt-get23:55:210
130059915615,117cyclictest11094-21ntp_states22:11:320
130059915613,120cyclictest10513-21ls22:10:060
130059915521,28cyclictest849-21/usr/sbin/munin00:31:090
130059915417,113cyclictest2350-21munin-run00:40:030
130059915415,25cyclictest9048-21/usr/sbin/munin22:00:220
130059915414,114cyclictest14521-21awk19:16:040
130059915412,22cyclictest7581-21latency21:50:420
130059915319,107cyclictest18387-21diskstats19:40:330
130059915317,113cyclictest19384-21ntp_states19:45:490
130059915316,23cyclictest27445-21apt20:35:010
130059915314,99cyclictest16555-21apt19:30:010
130059915310,27cyclictest29467-21grep00:01:100
130059915216,24cyclictest5065-21diskstats21:35:310
130059915216,24cyclictest15140-21ntp_states22:35:500
130059915215,112cyclictest111-21systemd-journal22:00:010
130059915213,118cyclictest23205-21apt-get23:25:490
130059915210,44cyclictest22768-21cut20:05:590
130059915120,26cyclictest14141-21diskstats22:30:330
130059915116,112cyclictest16763-21df_inode19:30:290
130059915115,22cyclictest31461-21munin-run21:00:020
130059915114,25cyclictest18122-21awk19:36:080
130059915112,24cyclictest712-21/usr/sbin/munin21:10:120
130059915112,115cyclictest2908-21sort21:21:010
130059915112,115cyclictest21254-21grep23:11:000
13005991505,122cyclictest16337-21cron22:45:010
130059915038,21cyclictest31994-21/usr/sbin/munin00:20:460
130059915020,101cyclictest12544-21diskstats22:20:320
130059915019,107cyclictest26193-21memory23:40:450
130059915018,25cyclictest4163-21apt-get21:30:240
130059915015,110cyclictest30077-21/usr/sbin/munin00:10:350
130059915014,37cyclictest12315-21munin-run22:20:030
130059915014,113cyclictest3036-21apt-get21:26:150
130059915012,38cyclictest21743-21sshd23:15:220
130059915010,117cyclictest21855-21wc20:00:530
13005991499,115cyclictest13179-21wc19:10:250
130059914918,26cyclictest31581-21apt-get21:00:210
130059914916,111cyclictest27717-21irqstats23:50:380
130059914913,114cyclictest25126-21/usr/sbin/munin23:36:070
130059914912,114cyclictest32603-21sort21:05:400
130059914819,102cyclictest21365-21munin-run20:00:040
130059914817,105cyclictest29161-21/usr/sbin/munin20:45:220
130059914810,22cyclictest18706-21sshd22:57:210
130059914718,23cyclictest27657-21diskstats20:35:310
130059914710,25cyclictest13754-21wc22:26:000
130059914630,20cyclictest0-21swapper20:50:130
130059914516,106cyclictest15240-21irqstats19:20:410
130059914418,24cyclictest6681-21df_inode21:45:310
130059914412,26cyclictest6297-21/usr/sbin/munin21:40:580
130059914318,24cyclictest19975-21diskstats19:50:320
130059913915,100cyclictest29980-21munin-run00:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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