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2026-05-17 - 00:28

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 Sat May 16, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25075224262186,94sleep00-21swapper07:09:290
251799916514,33cyclictest26730-21ntpq07:16:100
251799916218,100cyclictest32063-21apt-get11:12:010
251799916122,111cyclictest6361-21apt-get11:50:210
251799916118,119cyclictest12688-21apt-get12:30:030
251799916017,117cyclictest9122-21apt-get08:52:020
251799915817,25cyclictest4304-21munin-run08:20:020
251799915717,25cyclictest27417-21irqstats07:20:390
251799915618,23cyclictest31565-21ntp_states07:45:540
251799915617,22cyclictest7515-21munin-run08:40:020
251799915617,114cyclictest3453-21users08:11:080
251799915616,99cyclictest29073-21memory07:30:460
251799915614,120cyclictest15264-21kernelversion09:25:410
251799915516,119cyclictest13104-21diskstats12:30:550
251799915420,29cyclictest6017-21apt-get08:30:210
251799915420,25cyclictest10251-21apt-get08:55:200
251799915416,113cyclictest5322-21df08:25:280
251799915415,24cyclictest30218-21apt-get10:57:000
251799915415,114cyclictest32186-21/usr/sbin/munin07:50:370
251799915412,117cyclictest3848-21apt11:35:010
251799915317,109cyclictest3950-21apt-get11:35:180
251799915313,117cyclictest10010-21mailstats12:10:570
251799915312,26cyclictest8318-21cron08:45:010
251799915241,92cyclictest23629-21switchtime10:16:000
251799915223,100cyclictest2655-21users08:06:090
251799915220,31cyclictest13457-21apt-get09:15:220
251799915219,105cyclictest25519-21apt-get10:30:200
251799915215,22cyclictest4742-21ntp_states08:20:500
251799915214,115cyclictest14946-21users09:21:040
251799915211,27cyclictest20449-21sort09:56:000
251799915211,114cyclictest16780-21df_inode09:35:300
251799915210,118cyclictest30431-21wc07:40:070
251799915138,93cyclictest24599-21sshd10:21:190
251799915121,28cyclictest28105-21irqstats10:45:410
251799915115,24cyclictest11441-21memory12:20:440
251799915113,116cyclictest9237-21cut12:05:570
251799915113,115cyclictest7458-21awk11:55:470
251799915112,38cyclictest21219-21grep10:01:010
25179991509,116cyclictest11179-21cat12:20:060
251799915040,89cyclictest19299-21latency09:50:420
251799915018,24cyclictest30685-21diskstats11:00:370
251799915018,107cyclictest16537-21users09:31:080
251799915013,99cyclictest454-21sendmail-mta10:50:340
251799915012,41cyclictest14526-21munin-run12:40:020
251799914918,27cyclictest25276-21apt-get07:10:180
251799914916,94cyclictest1440-21sh11:20:000
251799914915,20cyclictest27101-21cat10:40:050
251799914915,111cyclictest22541-21memory10:10:430
251799914913,24cyclictest11977-21diskstats09:05:360
251799914911,114cyclictest2666-21grep11:25:480
251799914823,24cyclictest1312-21diskstats08:00:350
251799914816,29cyclictest27136-21/usr/sbin/munin10:40:350
251799914815,110cyclictest1805-21memory11:20:450
251799914814,21cyclictest28765-21sort07:30:030
251799914814,110cyclictest17497-21apt-get09:40:150
251799914811,99cyclictest12784-21systemd-journal08:48:550
251799914717,24cyclictest31907-21/usr/sbin/munin11:06:010
251799914713,108cyclictest7976-21/usr/sbin/munin12:01:040
251799914711,114cyclictest1009-21sed07:56:050
251799914672,35cyclictest5631-21ls11:45:230
251799914621,26cyclictest18607-21ntp_states09:45:520
251799914617,25cyclictest11308-21memory09:00:430
251799914613,26cyclictest25002-21grep10:25:460
251799914612,27cyclictest4779-21grep11:40:200
251799914611,112cyclictest21715-21ls10:05:440
251799914514,20cyclictest31144-21munin-run07:45:030
251799914415,104cyclictest13200-21/usr/sbin/munin09:11:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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