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2026-06-30 - 03:22

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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.
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 rackcslot7s.osadl.org (updated Tue Jun 30, 2026 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
400725621480,4sleep13056-21PK-Backend19:55:001
406658421060,4sleep33056-21PK-Backend22:40:193
139099860,68rtkit-daemon0-21swapper/319:09:203
399053127238,27sleep10-21swapper/119:05:411
399057127039,24sleep00-21swapper/019:06:110
399077326441,16sleep20-21swapper/219:08:472
41052442600,7sleep2341ksoftirqd/200:30:012
40040872380,1sleep34004088-21expr19:45:123
40598802360,4sleep04059851-21apt-get22:25:000
399102699332,5cyclictest0-21swapper/222:20:102
3991026992913,5cyclictest34-21ksoftirqd/219:55:172
399102699289,4cyclictest978-21snmpd21:58:032
3991026992811,3cyclictest4054910-21sh22:10:112
399102699279,3cyclictest4080583-21cpuspeed_turbos23:20:112
399102699278,5cyclictest4063128-21sh22:30:182
399102699277,5cyclictest4102034-21cat00:20:152
399102699277,5cyclictest4026882-21date20:50:002
399102699272,5cyclictest4087651-21apt-get23:40:032
399102699268,4cyclictest4007183-21cat19:55:002
399102699267,5cyclictest4049318-21cat21:55:002
399102699267,5cyclictest4001357-21cat19:35:222
399102699267,4cyclictest0-21swapper/220:10:122
399102699261,7cyclictest978-21snmpd20:50:132
399102699261,7cyclictest4039055-21apt21:25:122
3991026992611,3cyclictest4075265-21/usr/sbin/munin23:05:232
3991026992610,3cyclictest1095-21runrttasks21:01:122
40558832250,5sleep10-21swapper/122:10:221
399102699258,5cyclictest3998195-21pool-udisksd19:28:032
399102699257,5cyclictest4028800-21grep20:55:132
399102699248,3cyclictest0-21swapper/222:15:202
3991026992419,4cyclictest0-21swapper/223:26:332
3991026992419,4cyclictest0-21swapper/220:27:472
399102699241,8cyclictest4084127-21cpuspeed_turbos23:30:112
399102699241,10cyclictest4106152-21python300:30:212
3991026992410,3cyclictest1095-21runrttasks20:22:222
399102199241,21cyclictest4069017-21taskset22:46:331
3991028992317,4cyclictest4037083-21systemd-run21:20:003
3991028992312,8cyclictest4069306-21cron22:50:003
399102699239,4cyclictest978-21snmpd21:33:082
399102699239,3cyclictest4071362-21apt-key22:55:012
399102699232,9cyclictest4097338-21grep00:05:242
399102699231,10cyclictest4009299-21apt20:00:132
3991026992310,3cyclictest4091820-21needreboot23:50:182
3991026992310,2cyclictest4011015-21/usr/sbin/munin20:05:112
3991021992318,3cyclictest4074302-21ntp_states23:00:171
3991021992315,6cyclictest1-21systemd23:59:591
399101799232,19cyclictest4014507-21apt20:15:000
3991017992316,5cyclictest4003548-21cron19:45:000
139099230,16rtkit-daemon3056-21PK-Backend00:37:583
139099230,15rtkit-daemon0-21swapper/319:21:533
39986912220,3sleep30-21swapper/319:30:123
3991028992220,1cyclictest3056-21PK-Backend20:40:053
3991028992220,1cyclictest0-21swapper/320:05:453
399102899221,20cyclictest0-21swapper/323:40:193
399102899220,20cyclictest3056-21PK-Backend22:26:113
399102699229,3cyclictest1095-21runrttasks21:43:472
399102699228,3cyclictest978-21snmpd19:45:172
399102699226,14cyclictest0-21swapper/222:30:012
399102699225,4cyclictest0-21swapper/221:15:182
3991021992215,5cyclictest2156-21gnome-shell00:31:091
399102199220,20cyclictest3056-21PK-Backend00:20:011
3991017992220,1cyclictest0-21swapper/022:55:510
3991017992220,1cyclictest0-21swapper/022:54:430
3991017992220,1cyclictest0-21swapper/022:07:590
3991017992220,1cyclictest0-21swapper/020:29:370
3991017992219,2cyclictest0-21swapper/019:16:170
3991017992214,6cyclictest4094663-21cat00:00:010
3991017992210,8cyclictest883-21dbus-daemon20:41:070
139099220,15rtkit-daemon3056-21PK-Backend20:45:133
40656332210,2sleep00-21swapper/022:40:000
3991028992119,1cyclictest3056-21PK-Backend23:52:573
3991028992119,1cyclictest3056-21PK-Backend20:18:363
3991028992119,1cyclictest3056-21PK-Backend19:17:053
3991028992119,1cyclictest0-21swapper/323:10:533
3991028992119,1cyclictest0-21swapper/322:14:083
3991028992119,1cyclictest0-21swapper/321:46:303
3991028992119,1cyclictest0-21swapper/321:36:163
3991028992119,1cyclictest0-21swapper/321:20:343
3991028992119,1cyclictest0-21swapper/320:22:063
3991028992119,1cyclictest0-21swapper/320:04:233
399102899211,19cyclictest0-21swapper/321:10:133
399102899210,20cyclictest0-21swapper/321:09:393
399102899210,19cyclictest3056-21PK-Backend00:11:093
3991026992119,1cyclictest0-21swapper/223:15:312
3991026992119,1cyclictest0-21swapper/222:43:072
3991026992119,1cyclictest0-21swapper/221:46:562
3991026992119,1cyclictest0-21swapper/220:38:152
3991026992119,1cyclictest0-21swapper/220:31:312
3991026992119,1cyclictest0-21swapper/220:18:212
3991026992119,1cyclictest0-21swapper/219:13:052
3991026992119,1cyclictest0-21swapper/200:17:492
3991026992115,5cyclictest4065564-21cron22:40:002
399102699211,10cyclictest4032120-21apt21:05:122
399102699210,20cyclictest0-21swapper/223:55:332
399102699210,20cyclictest0-21swapper/223:01:252
399102699210,20cyclictest0-21swapper/221:23:512
399102699210,20cyclictest0-21swapper/200:39:472
3991021992114,5cyclictest4096156-21sshd00:02:391
3991021992113,6cyclictest883-21dbus-daemon20:50:001
399102199210,20cyclictest0-21swapper/100:25:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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