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2025-12-29 - 23:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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: 100 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 792 highest latencies:
System rack2slot7s.osadl.org (updated Mon Dec 29, 2025 07:55:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1874792996053,4cyclictest1876251-21kworker/u8:3-xprtiod06:07:551
1874793995847,7cyclictest2676675-21sh06:09:582
1874791995741,11cyclictest0-21swapper/005:49:520
1874793995441,8cyclictest2434142-21spawn06:03:472
1874791995344,6cyclictest2674301-21multi.sh06:09:500
1874793995241,7cyclictest0-21swapper/205:39:522
1874792995244,5cyclictest2686547-21sh06:10:211
1874792995244,4cyclictest0-21swapper/105:49:511
1874791995240,9cyclictest2123128-21sh05:41:120
1874792995141,5cyclictest2142590-21sh05:42:011
1874793995042,5cyclictest2688350-21multi.sh06:10:252
1874793994938,8cyclictest0-21swapper/205:50:032
1874791994937,9cyclictest2682701-21sh06:10:130
1874793994738,6cyclictest2165958-21multi.sh05:43:002
1874793994436,4cyclictest0-21swapper/205:34:502
1874793994436,4cyclictest0-21swapper/205:34:502
1874792994436,4cyclictest0-21swapper/105:39:481
1874792994236,3cyclictest0-21swapper/105:35:011
1874792994236,3cyclictest0-21swapper/105:35:011
1874791994230,9cyclictest0-21swapper/005:50:320
187479299411,37cyclictest1879707-21fstime05:24:531
1874793993930,6cyclictest1882481-21systemd05:30:012
1874792993930,6cyclictest2320558-21spawn06:03:271
1874791993933,3cyclictest2096575-21sh05:39:530
1874793993830,5cyclictest2754926-21munin-run06:20:012
1874793993827,8cyclictest2756412-21munin-plugin-st06:25:012
187479299383,4cyclictest1878164-21whetstone-doubl05:19:491
1874792993728,7cyclictest271ktimers/106:29:491
1874793993628,5cyclictest2181767-21fstime05:53:002
1874792993628,4cyclictest0-21swapper/105:50:481
1874791993630,4cyclictest1-21systemd05:35:010
1874791993630,4cyclictest1-21systemd05:35:010
1874793993528,4cyclictest2759330-21cron06:35:012
1874791993528,4cyclictest2279533-21spawn06:03:100
1874791993525,7cyclictest1882372-21grep05:30:010
1874791993524,7cyclictest2183310-21fstime05:57:350
1874791993520,12cyclictest2760501-21sshd06:39:550
1874793993425,6cyclictest564-21dbus-daemon05:15:012
187479399341,26cyclictest2184046-21pipe05:59:482
1874791993428,4cyclictest1880927-21idleruntime-cro05:25:010
187479299333,22cyclictest1167-21mta-sts-daemon05:57:021
1874792993325,5cyclictest2754919-21cron06:20:011
1874792993323,6cyclictest1876418-21latency_hist05:10:031
1874792993322,7cyclictest582-21systemd-logind05:15:011
187479299330,30cyclictest1881438-21pipe05:29:501
1874791993327,4cyclictest0-21swapper/005:20:010
1874791993225,4cyclictest1877688-21grep05:15:010
1874793993117,5cyclictest1879406-21sendmail05:20:012
1874792993124,4cyclictest0-21swapper/106:25:011
1874791993126,2cyclictest0-21swapper/006:35:020
1874793993024,3cyclictest0-21swapper/205:24:562
1874792993022,5cyclictest0-21swapper/106:35:011
1874792993020,6cyclictest171rcu_preempt06:39:501
1874791993023,5cyclictest2756448-21systemd-run06:25:010
1874791993010,6cyclictest1168-21mta-sts-daemon06:18:560
1874791992920,7cyclictest2184737-21kworker/u8:10+xprtiod06:30:010
1874793992821,4cyclictest1167-21mta-sts-daemon06:39:472
1874793992418,3cyclictest0-21swapper/206:29:522
1874793992418,3cyclictest0-21swapper/205:09:492
1874791992417,5cyclictest563-21avahi-daemon05:09:430
1874792992216,3cyclictest1872307-21kworker/u8:5-rpciod05:05:021
187479199198,4cyclictest12450irq/32-eth005:05:020
187479499171,7cyclictest0-21swapper/306:06:563
187479499154,6cyclictest0-21swapper/305:49:543
187479499152,5cyclictest0-21swapper/306:34:473
187479399151,11cyclictest1873618-21/usr/sbin/munin05:05:022
187479499144,8cyclictest0-21swapper/305:59:503
187479499142,5cyclictest0-21swapper/305:14:453
187479499141,6cyclictest0-21swapper/305:34:483
187479499141,6cyclictest0-21swapper/305:34:483
187479499141,5cyclictest0-21swapper/306:29:503
187479499141,5cyclictest0-21swapper/306:18:563
187479499141,5cyclictest0-21swapper/305:09:483
187479499123,6cyclictest0-21swapper/305:41:113
187479499122,5cyclictest0-21swapper/306:40:013
187479499121,6cyclictest0-21swapper/306:01:013
187479499121,6cyclictest0-21swapper/305:38:023
187479499114,5cyclictest0-21swapper/306:11:023
187479499112,6cyclictest0-21swapper/305:50:363
187479499111,5cyclictest0-21swapper/305:27:153
187479499101,6cyclictest0-21swapper/305:24:523
18747949993,4cyclictest0-21swapper/305:19:513
18747949991,5cyclictest0-21swapper/306:25:013
18747949981,3cyclictest0-21swapper/305:05:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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