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2026-08-18 - 02:30

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 Tue Aug 18, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
124142238163,24sleep20-21swapper/219:05:052
141972237162,24sleep00-21swapper/019:07:410
141832236162,23sleep30-21swapper/319:07:323
141412203166,24sleep10-21swapper/119:06:571
1447599108104,3cyclictest0-21swapper/221:54:542
1447599107103,3cyclictest0-21swapper/222:23:012
144759910198,2cyclictest0-21swapper/219:35:372
14475999591,3cyclictest0-21swapper/220:18:112
14475997168,2cyclictest0-21swapper/222:05:502
14475997168,2cyclictest0-21swapper/219:41:062
14475996664,1cyclictest0-21swapper/221:48:422
260582600,4sleep07-21ksoftirqd/023:15:100
1447999429,17cyclictest3174-21diskmemload21:12:273
1447599405,6cyclictest10131-40dnf23:50:242
1447599362,7cyclictest26666-40dnf20:49:252
14475993513,3cyclictest17996-21tr00:10:122
14475993512,3cyclictest26406-21idleruntime-cro00:30:012
18042340,4sleep31447999cyclictest23:30:263
1447999348,18cyclictest87350irq/126-enp1s0-23:05:213
14479993410,14cyclictest28621-21awk00:35:013
1447599342,2cyclictest0-21swapper/223:45:162
1447999338,10cyclictest12325-21cpuspeed_turbos21:30:113
1446299335,13cyclictest13554-21idleruntime-cro20:20:010
1447999329,19cyclictest8409-21/usr/sbin/munin22:35:173
1447999327,8cyclictest2563-21awk19:55:013
1447999326,19cyclictest87350irq/126-enp1s0-21:30:023
14479993210,7cyclictest4521-21cat23:40:013
14479993210,11cyclictest3786-21latency_hist22:25:013
1447599323,10cyclictest14450-21cyclictest00:20:402
293502310,1sleep30-21swapper/319:40:183
14479993111,12cyclictest19170-21latency_hist23:00:023
1447599315,3cyclictest27974-21idleruntime-cro23:20:012
1447599313,5cyclictest763-21dbus-daemon20:40:202
1447599311,8cyclictest22319-21grep19:25:162
1447599311,7cyclictest0-21swapper/222:33:042
1447599311,6cyclictest2212-21awk23:35:012
1447599311,3cyclictest87350irq/126-enp1s0-21:05:162
1447599311,3cyclictest87350irq/126-enp1s0-21:05:162
14475993113,2cyclictest28838-21/usr/sbin/munin00:35:172
14475993113,2cyclictest28838-21/usr/sbin/munin00:35:162
14475993112,3cyclictest30135-21needreboot20:55:212
14475993112,3cyclictest18338-21expr20:30:132
206392300,5sleep11446899cyclictest19:20:181
1447999309,14cyclictest5848-21awk23:40:223
1447999309,11cyclictest29779-21/usr/sbin/munin22:10:163
1447999307,5cyclictest87350irq/126-enp1s0-21:45:153
1447999306,15cyclictest0-21swapper/300:37:053
1447999306,15cyclictest0-21swapper/300:37:053
1447999306,13cyclictest6825-21/usr/sbin/munin23:45:183
14479993010,9cyclictest808-21snmpd22:33:253
14479993010,6cyclictest8759-21uptime20:05:253
14479993010,5cyclictest2765-21grep21:05:283
14479993010,5cyclictest2765-21grep21:05:283
14475993012,3cyclictest9105-21idleruntime22:35:172
27892290,2sleep20-21swapper/223:35:152
1447999299,7cyclictest11226-21/usr/sbin/munin23:55:273
1447999297,6cyclictest24146-21/usr/sbin/munin19:30:143
1447999296,11cyclictest0-21swapper/321:35:143
14479992911,9cyclictest18868-21ls19:15:243
14479992911,10cyclictest87350irq/126-enp1s0-22:25:283
14479992910,4cyclictest808-21snmpd21:40:223
14479992910,10cyclictest2775-21/usr/sbin/munin19:55:153
14479992910,10cyclictest2775-21/usr/sbin/munin19:55:143
1447599291,4cyclictest0-21swapper/200:05:492
14475992912,3cyclictest15384-21taskset00:04:442
14475992911,3cyclictest17923-21if_enp1s022:55:162
1446299294,12cyclictest4744-21munin-run20:00:010
1446299294,12cyclictest4744-21munin-run20:00:010
1447999289,6cyclictest26408-21latency_hist00:30:013
1447999289,5cyclictest87350irq/126-enp1s0-23:50:253
1447999289,15cyclictest26369-21needreboot22:00:213
1447999287,7cyclictest11788-21expr20:15:143
1447999287,13cyclictest13769-21/usr/sbin/munin20:20:253
1447999287,13cyclictest10109-21if_enp1s020:10:183
14479992817,3cyclictest694-21sshd21:02:393
14479992813,7cyclictest17850-21/usr/sbin/munin00:10:283
14479992813,6cyclictest682-21/usr/sbin/munin22:15:223
14479992813,6cyclictest682-21/usr/sbin/munin22:15:223
1447999281,19cyclictest0-21swapper/300:05:463
14479992811,5cyclictest12050irq/123-ahci[0023:30:013
14479992811,5cyclictest12050irq/123-ahci[0023:30:013
1447999281,12cyclictest0-21swapper/320:55:133
1447599285,12cyclictest495-21jbd2/dm-0-800:33:042
1447599282,4cyclictest808-21snmpd19:50:002
1447599281,5cyclictest3845-21ntp_states19:55:222
1447599281,5cyclictest3845-21ntp_states19:55:222
1447599281,4cyclictest8564-1kworker/u9:123:05:512
1447599281,12cyclictest0-21swapper/221:18:142
14475992810,9cyclictest0-21swapper/221:21:202
1446899286,13cyclictest0-21swapper/122:15:121
1446899286,13cyclictest0-21swapper/122:15:121
1446299284,11cyclictest32361-21sadc23:30:010
1446299284,11cyclictest32361-21sadc23:30:010
1447999278,8cyclictest12801-21/usr/sbin/munin22:45:143
1447999278,12cyclictest28291-21sort23:20:133
1447999277,7cyclictest22225-21/usr/sbin/munin21:50:233
1447999276,12cyclictest13427-21/usr/sbin/munin00:00:253
1447999273,17cyclictest0-21swapper/323:03:003
1447999273,11cyclictest0-21swapper/322:50:193
1447999271,7cyclictest0-21swapper/300:20:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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