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2026-06-05 - 16:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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.
Unexpectedly long latencies may be caused by SMIs
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 100 highest latencies:
System rack5slot3s.osadl.org (updated Fri Jun 05, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
238092241165,25sleep00-21swapper/007:09:540
237012237163,24sleep20-21swapper/207:08:312
237912235163,23sleep30-21swapper/307:09:403
236382204167,25sleep10-21swapper/107:07:421
23914998675,9cyclictest12609-21diskmemload11:26:312
10112800,3sleep081ktimersoftd/011:10:120
23914995956,2cyclictest0-21swapper/211:41:272
197342530,4sleep02390199cyclictest09:25:130
196522530,4sleep121-21rcuc/108:10:171
248372520,2sleep20-21swapper/212:04:562
248372520,2sleep20-21swapper/212:04:562
35132500,3sleep10-21swapper/107:35:151
201062490,4sleep22391499cyclictest11:50:512
224312480,1sleep00-21swapper/010:45:120
2391899381,24cyclictest0-21swapper/308:04:293
2391899381,20cyclictest0-21swapper/311:15:413
2391899371,22cyclictest0-21swapper/311:30:333
2391499373,6cyclictest16016-40dnf08:00:342
2391499362,7cyclictest6856-21/usr/sbin/munin10:10:142
23914993613,20cyclictest6230-21/usr/sbin/munin08:55:142
23901993611,12cyclictest19822-21munin-run10:40:010
23918993516,3cyclictest0-21swapper/307:35:133
2391499356,4cyclictest12608-21sh09:10:012
2391499355,4cyclictest12609-21diskmemload09:44:292
23914993513,19cyclictest5285-21/usr/sbin/munin11:20:152
2391499346,4cyclictest31034-21/usr/sbin/munin08:35:242
2391499346,4cyclictest31034-21/usr/sbin/munin08:35:242
2391499342,9cyclictest808-21snmpd11:12:432
23914993413,18cyclictest8430-21/usr/sbin/munin09:00:132
23918993324,2cyclictest0-21swapper/308:25:163
23918993318,6cyclictest0-21swapper/312:01:063
23918993318,6cyclictest0-21swapper/312:01:063
2391499339,3cyclictest827-21runrttasks09:48:372
2391499339,3cyclictest827-21runrttasks09:48:372
23914993311,3cyclictest28866-21users12:10:252
2391499329,3cyclictest24446-21/usr/sbin/munin10:50:242
2391499327,4cyclictest0-21swapper/208:05:272
2391499324,4cyclictest16177-21pmu-power09:15:252
2391499322,5cyclictest5009-21df_inode10:05:142
2391499321,5cyclictest0-21swapper/212:31:062
2391499321,4cyclictest22633-21dump-pmu-power12:00:012
23914993211,3cyclictest4035-21/usr/sbin/munin08:50:252
23914993211,3cyclictest25321-21processes07:10:242
23914993210,3cyclictest29628-21if_err_enp2s011:00:172
2390199327,12cyclictest29582-21munin-run08:35:010
2391899311,13cyclictest0-21swapper/311:01:293
2391499319,3cyclictest827-21runrttasks12:07:262
2391499319,3cyclictest827-21runrttasks12:07:262
2391499319,3cyclictest29474-21/usr/sbin/munin12:15:182
2391499319,2cyclictest3427-21/usr/sbin/munin07:35:282
2391499318,3cyclictest17849-21/usr/sbin/munin10:35:192
23914993114,14cyclictest7139-21grep07:40:252
2391499311,3cyclictest0-21swapper/209:30:122
23914993111,3cyclictest827-21runrttasks08:40:222
2391499307,3cyclictest26645-21/usr/sbin/munin10:55:182
2391499307,3cyclictest26645-21/usr/sbin/munin10:55:182
2391499305,4cyclictest1232-21cpu07:30:112
2391499305,3cyclictest12050irq/123-ahci[0007:50:012
2391499304,3cyclictest12248-21needreboot10:20:192
2391499303,4cyclictest32423-21iwlist12:20:152
2391499303,3cyclictest87650irq/129-enp1s0-11:45:122
2391499302,7cyclictest21930-21taskset10:44:042
2391499301,4cyclictest790-21in:imjournal08:00:022
2391499301,3cyclictest0-21swapper/210:15:132
2391499301,2cyclictest87350irq/126-enp1s0-08:10:102
23914993010,4cyclictest0-21swapper/212:35:172
2391499300,5cyclictest0-21swapper/209:10:142
2391899299,4cyclictest7827-21df_inode11:25:133
2391899299,11cyclictest25941-21sort09:40:013
23918992911,3cyclictest29010-21chrt12:12:083
2391899291,12cyclictest0-21swapper/308:13:423
2391499299,3cyclictest827-21runrttasks10:27:332
2391499299,3cyclictest1649-21cut12:25:112
2391499298,3cyclictest30417-21/usr/sbin/munin09:50:222
2391499295,3cyclictest18264-21grep09:20:192
2391499292,5cyclictest808-21snmpd10:30:112
2391499291,6cyclictest579-21systemd-journal08:20:002
2391499291,6cyclictest23933-21cut09:35:122
2391499291,5cyclictest0-21swapper/210:46:182
23914992910,2cyclictest827-21runrttasks09:59:172
2391499290,1cyclictest0-21swapper/211:17:462
2390199299,16cyclictest30833-21munin-run11:05:010
2391899281,9cyclictest0-21swapper/307:51:073
2391899281,12cyclictest0-21swapper/308:43:093
2391499289,7cyclictest0-21swapper/207:50:322
2391499289,2cyclictest26055-21grep08:25:162
2391499288,2cyclictest827-21runrttasks07:15:552
2391499287,3cyclictest9682-21/usr/sbin/munin11:30:242
2391499285,4cyclictest31376-21cstates11:05:132
2391499281,8cyclictest0-21swapper/209:25:212
2391499281,5cyclictest13743-21chrt11:38:522
2390799280,6cyclictest0-21swapper/110:55:131
2390799280,6cyclictest0-21swapper/110:55:131
2391899279,3cyclictest0-21swapper/310:48:333
2391899278,8cyclictest0-21swapper/307:47:173
23918992711,3cyclictest14522-21ntp_states10:25:223
2391899271,13cyclictest0-21swapper/312:05:063
2391899271,13cyclictest0-21swapper/312:05:063
2391899271,12cyclictest0-21swapper/310:21:543
2391899271,12cyclictest0-21swapper/307:43:493
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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