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2026-05-11 - 20:05

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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 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 376 highest latencies:
System rack9slot8s.osadl.org (updated Mon May 11, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819502060,0irq/46-4a1000007218-21kworker/0:207:05:370
94289911547,0cyclictest81950irq/46-4a10000007:20:020
94289910714,0cyclictest29684-21sshd09:21:360
94289910611,0cyclictest561-21kswapd011:15:360
94289910611,0cyclictest14601-21apt-get11:15:020
94289910512,0cyclictest18980-21latency_hist08:10:020
94289910428,0cyclictest21379-21runrttasks08:25:390
94289910426,0cyclictest22436-21idleruntime-cro12:05:010
94289910410,0cyclictest13133-21awk11:05:010
94289910329,0cyclictest12404-21sendmail-msp11:00:020
94289910311,0cyclictest9193-21apt-get10:40:030
94289910310,0cyclictest19298-21ls11:45:030
9428991029,0cyclictest14315-21modprobe07:40:020
94289910233,0cyclictest81950irq/46-4a10000010:05:030
94289910230,0cyclictest19127-21sshd08:10:340
94289910227,0cyclictest15663-21latency_hist11:20:030
94289910226,0cyclictest26772-21runrttasks09:02:110
94289910213,0cyclictest32332-21apt-get09:40:250
94289910212,0cyclictest9193-21apt-get10:40:380
94289910212,0cyclictest22351-21sshd08:32:370
94289910212,0cyclictest20125-21sshd08:17:370
94289910210,0cyclictest17221-21sshd11:30:370
94289910210,0cyclictest12113-21runrttasks11:36:470
94289910134,0cyclictest81950irq/46-4a10000008:05:050
94289910126,0cyclictest5132-21seq10:13:530
94289910122,0cyclictest20474-21kworker/u2:012:25:010
94289910120,0cyclictest15063-21munin-run07:45:020
94289910110,0cyclictest19271-21apt-get11:45:360
9428991009,0cyclictest29372-21awk09:20:010
94289910026,0cyclictest26392-21sendmail09:00:010
94289910026,0cyclictest25149-21kworker/u2:509:26:010
94289910024,0cyclictest17644-21kworker/u2:208:25:020
94289910014,0cyclictest24903-21munin-run08:50:010
94289910010,0cyclictest7411-21sshd10:27:360
942899999,0cyclictest323642chrt09:40:030
942899999,0cyclictest24172-21munin-run08:45:020
942899999,0cyclictest10148-21latency_hist07:15:020
9428999932,0cyclictest13694-21runrttasks11:08:430
9428999926,0cyclictest26869-21latency_hist12:35:020
9428999926,0cyclictest11271-21seq10:52:180
9428999924,0cyclictest31848-21kworker/u2:110:03:580
9428999924,0cyclictest12087-21apt07:25:010
9428999921,0cyclictest2030-21runrttasks09:52:470
9428999917,0cyclictest23414-21munin-run08:40:010
9428999916,0cyclictest31592-21munin-run09:35:010
9428999914,0cyclictest23911-21chrt12:15:010
9428999912,0cyclictest6481-21sshd10:22:360
9428999912,0cyclictest6037-21munin-run10:20:020
9428999912,0cyclictest24651-21munin-run12:20:020
9428999911,0cyclictest25442-21sshd08:53:370
9428999910,0cyclictest17280-21munin-run08:00:030
9428999910,0cyclictest16539-21awk07:55:020
9428999910,0cyclictest11627-21rs:main0
9428999826,0cyclictest20487-21sshd11:51:280
9428999825,0cyclictest27875-21apt09:10:010
9428999824,0cyclictest8974-21kworker/u2:507:30:030
9428999810,0cyclictest28422-21sshd09:13:360
9428999722,0cyclictest3062-21run-parts10:00:010
9428999716,0cyclictest15798-21apt07:50:010
9428999711,0cyclictest1386-21sshd09:48:360
9428999711,0cyclictest12086-21snmpd10:34:390
9428999710,0cyclictest17043-21munin-run11:30:010
9428999625,0cyclictest9736-21kworker/u2:210:46:150
9428999624,0cyclictest13042-21runrttasks07:30:550
9428999613,0cyclictest17383-21kworker/u2:112:00:030
9428999612,0cyclictest26435-21sshd12:31:350
9428999514,0cyclictest1210-21systemd-journal12:25:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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