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2025-08-30 - 07:27

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 50 highest latencies:
System rack9slot8s.osadl.org (updated Sat Aug 30, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501830,0irq/47-4a10000015173-21snmpd19:09:270
305749912029,0cyclictest9239-21sshd20:21:320
305749911628,0cyclictest17910-21ssh23:30:250
305749911526,0cyclictest17142-21rm21:10:540
305749911431,0cyclictest4807-21sshd23:02:380
305749911430,0cyclictest7962-21ssh22:00:080
305749911412,0cyclictest31395-21ssh23:59:320
305749911345,0cyclictest81850irq/46-4a10000021:22:430
305749911330,0cyclictest15173-21snmpd22:40:310
305749911230,0cyclictest20549-21ssh21:18:110
305749911227,0cyclictest11034-21ssh00:25:040
305749911223,0cyclictest14295-21sh22:13:560
305749911132,0cyclictest18711-21ssh22:23:130
305749911131,0cyclictest10390-21ssh00:23:500
305749911129,0cyclictest22297-21sendmail23:39:590
305749911127,0cyclictest2974-21rm00:08:020
305749911114,0cyclictest31415-21cut19:14:530
305749911110,0cyclictest1396-21ssh22:55:220
305749911013,0cyclictest11157-21latency_hist20:34:550
305749911011,0cyclictest30573-21ssh21:39:270
305749910928,0cyclictest15191-21runrttasks21:00:000
305749910920,0cyclictest17140-21run-parts22:19:570
305749910911,0cyclictest22013-21ssh22:30:110
305749910842,0cyclictest81850irq/46-4a10000022:25:270
305749910842,0cyclictest81850irq/46-4a10000000:03:430
305749910829,0cyclictest7250-21ssh21:58:580
305749910827,0cyclictest6481-21ssh00:15:210
305749910822,0cyclictest16044-21kworker/u2:621:30:420
305749910820,0cyclictest8064-21ssh23:09:330
305749910810,0cyclictest2911-21ssh21:49:400
30574991079,0cyclictest31388-21sh22:50:080
305749910728,0cyclictest6883-21sshd20:05:320
305749910728,0cyclictest32607-21runrttasks19:19:580
305749910727,0cyclictest16060-21ssh00:35:460
305749910726,0cyclictest30636-21ssh22:48:400
305749910725,0cyclictest23072-21ssh23:41:310
305749910723,0cyclictest3953-21apt-config00:10:050
305749910723,0cyclictest3366-21ssh21:50:280
305749910713,0cyclictest16553-21munin-run21:09:560
305749910712,0cyclictest32294-21diskmemload21:43:010
305749910711,0cyclictest10546-21ssh23:14:540
305749910710,0cyclictest24364-21ssh22:35:130
305749910629,0cyclictest9292-21kworker/u2:620:39:550
305749910627,0cyclictest1943-21sshd19:32:290
305749910624,0cyclictest12669-21apt-key20:44:550
305749910623,0cyclictest25846-21ssh21:29:260
305749910526,0cyclictest4423-21kworker/u2:623:21:380
305749910525,0cyclictest8165-21apt20:14:510
305749910524,0cyclictest12779-21apt-key20:44:590
305749910518,0cyclictest5978-21lockfile-remove19:59:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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