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2026-04-13 - 17:17

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 100 highest latencies:
System rack5slot7s.osadl.org (updated Mon Apr 13, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4565224322191,98sleep00-21swapper07:06:500
49659916115,121cyclictest20020-21apt08:40:020
49659916015,121cyclictest23789-21apt-get12:20:350
49659916014,122cyclictest2247-21apt-get10:11:340
49659916012,122cyclictest16754-21cat11:35:590
49659915911,24cyclictest24052-21munin-run09:05:010
49659915819,22cyclictest6909-21munin-run07:20:030
49659915718,29cyclictest18659-21apt-get11:50:210
49659915713,120cyclictest7027-21/usr/sbin/munin07:20:370
49659915612,27cyclictest31597-21/usr/sbin/munin09:50:410
49659915518,108cyclictest22632-21df08:55:290
49659915511,102cyclictest25423-1kworker/u3:012:31:510
49659915417,22cyclictest16584-21apt-get08:20:350
49659915417,112cyclictest24843-21apt-get09:12:020
49659915416,25cyclictest12047-21irqstats07:50:380
49659915415,116cyclictest30784-21cat09:45:050
49659915340,92cyclictest31483-21sshd09:48:580
49659915316,25cyclictest18556-21apt11:50:010
49659915316,113cyclictest11397-21ntp_states07:45:530
49659915316,111cyclictest20587-21ntp_states12:00:500
49659915313,120cyclictest22731-21apt-get12:15:300
49659915313,119cyclictest22560-21munin-run12:15:020
49659915310,26cyclictest26685-21munin-run09:20:040
49659915226,21cyclictest22594-1kworker/u3:412:25:150
49659915222,104cyclictest1554-21apt-get10:05:170
49659915216,105cyclictest5008-21apt-get10:25:170
49659915213,114cyclictest26916-21/usr/sbin/munin12:36:020
49659915212,26cyclictest10463-21uname07:40:410
49659915211,27cyclictest5704-21unixbench_singl07:11:040
49659915211,27cyclictest16580-21cron08:20:010
49659915135,22cyclictest6023-21latency10:30:440
49659915122,28cyclictest15083-21apt-get08:10:200
49659915121,106cyclictest32632-21memory09:55:460
49659915114,113cyclictest20802-21users08:41:050
49659915113,25cyclictest15017-21grep11:25:530
49659915112,27cyclictest24833-21cron09:10:020
49659915020,28cyclictest13603-21diskstats08:00:340
49659915020,102cyclictest3378-21apt-get10:15:290
49659915016,94cyclictest13373-21munin-run08:00:020
49659915016,23cyclictest6774-21irqstats10:35:390
49659915014,26cyclictest13019-21/usr/sbin/munin11:15:460
49659915013,113cyclictest21252-21ntp_states08:45:480
49659915012,96cyclictest7845-21grep10:40:580
49659915012,29cyclictest29599-21zcat09:35:540
49659915012,115cyclictest19870-21grep11:55:550
4965991499,26cyclictest272-21snmpd10:55:530
49659914936,22cyclictest11003-21/usr/sbin/munin11:00:530
49659914917,104cyclictest18531-21apt-get08:30:200
49659914913,95cyclictest8133-21grep07:25:510
49659914912,40cyclictest9524-21grep10:51:000
49659914912,114cyclictest22037-21ntpq08:50:490
49659914911,115cyclictest17067-21/usr/sbin/munin11:40:120
49659914911,114cyclictest17738-21apt-get08:25:140
4965991489,114cyclictest14988-21wc08:10:030
49659914818,22cyclictest11429-21apt-get11:05:130
49659914814,24cyclictest28686-21awk09:30:480
49659914814,21cyclictest15989-21awk11:31:000
49659914812,116cyclictest13860-21kworker/u2:811:20:110
49659914716,26cyclictest8864-21memory07:30:420
49659914711,113cyclictest21291-21grep12:05:390
49659914710,98cyclictest9704-21memory07:35:450
49659914633,21cyclictest27097-21ntpq09:20:490
49659914613,107cyclictest757-21/usr/sbin/munin10:00:210
49659914525,98cyclictest4904-21munin-run10:25:010
49659914513,105cyclictest12503-21/usr/sbin/munin11:10:470
49659914412,27cyclictest27681-21expr09:25:250
49659914315,24cyclictest8876-21users10:46:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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