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2025-12-18 - 10:21

OSADL QA Farm on Real-time of Mainline Linux

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

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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  Phytec
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 100 highest latencies:
System rackbslot5s.osadl.org (updated Thu Dec 18, 2025 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
612674995627,24cyclictest636872-21grep20:15:261
612669995541,10cyclictest121ktimers/020:40:130
612682995448,4cyclictest698632-21kworker/u8:3+events_unbound23:15:533
612674995238,11cyclictest231ktimers/120:55:111
612678995144,4cyclictest632196-21munin-plugin-st20:05:012
612682994943,4cyclictest661023-21kworker/u8:1+events_unbound21:55:373
612682994937,5cyclictest689158-21kworker/u8:0+events_unbound23:00:503
612674994923,22cyclictest0-21swapper/100:00:261
612682994824,7cyclictest131rcu_preempt00:20:113
612669994639,4cyclictest673768-21auditctl22:05:000
612682994533,5cyclictest642050-21kworker/u8:0+events_unbound20:55:283
612669994433,8cyclictest685922-21sendmail22:40:000
61267499437,6cyclictest626372-21/usr/sbin/munin19:45:261
61267499437,6cyclictest626372-21/usr/sbin/munin19:45:261
612674994325,14cyclictest0-21swapper/119:55:001
612674994325,14cyclictest0-21swapper/119:55:001
612682994236,4cyclictest620721-21kworker/u8:2+events_unbound19:50:173
612682994236,4cyclictest620721-21kworker/u8:2+events_unbound19:50:173
61267499424,4cyclictest0-21swapper/120:50:171
61267499424,4cyclictest0-21swapper/120:50:171
612674994213,27cyclictest658230-21/usr/sbin/munin21:20:161
612669994231,7cyclictest647332-21grep20:45:250
612669994231,7cyclictest647332-21grep20:45:250
612682994133,6cyclictest676902-21kworker/u8:3+events_unbound22:15:423
612674994130,7cyclictest685925-21sendmail22:40:001
61267499411,9cyclictest678483-21users22:15:261
61267499411,9cyclictest644559-21apt-get20:40:061
61267499411,8cyclictest651677-21/usr/sbin/munin21:00:181
61267499411,11cyclictest667086-21diskstats21:45:151
612669994133,5cyclictest663321-21munin-plugin-st21:35:000
612669994133,5cyclictest663321-21munin-plugin-st21:35:000
612669994129,8cyclictest683755-21grep22:30:240
612682994034,4cyclictest623217-21kworker/u8:0+events_unbound19:38:413
612682994020,7cyclictest131rcu_preempt21:00:133
612678994025,11cyclictest311ktimers/220:50:122
612678994025,11cyclictest311ktimers/220:50:122
61267499409,3cyclictest683765-21unixbench_singl22:30:251
61267499405,5cyclictest687549-21sshd22:44:111
61267499403,7cyclictest621973-21apt19:35:121
61267499402,5cyclictest659931-21/usr/sbin/munin21:25:191
61267499402,5cyclictest659931-21/usr/sbin/munin21:25:191
61267499401,9cyclictest634108-21/usr/sbin/munin20:10:141
61267499401,10cyclictest698502-21/usr/sbin/munin23:15:251
61267499401,10cyclictest1-21systemd21:50:361
612682993927,9cyclictest727517-21sendmail00:40:003
612678993929,5cyclictest644099-21cron20:40:002
61267499391,9cyclictest695011-21diskstats23:05:151
61267499391,9cyclictest691226-21cron22:55:011
61267499391,9cyclictest620392-21diskstats19:30:161
61267499391,8cyclictest703763-21fschecks_count23:30:161
61267499391,8cyclictest665259-21/usr/sbin/munin21:40:221
61267499391,7cyclictest675918-21fschecks_time22:10:161
61267499391,6cyclictest643639-21unixbench_multi20:35:271
612674993914,21cyclictest0-21swapper/122:00:131
61267499391,12cyclictest721930-21grep00:20:251
61267499391,11cyclictest722815-21fschecks_time00:25:161
61267499391,11cyclictest681159-21diskstats22:25:151
61267499391,11cyclictest657988-21run-parts21:20:001
612669993929,6cyclictest0-21swapper/020:05:010
612682993832,4cyclictest391ktimers/321:35:123
612682993827,8cyclictest675044-21head22:05:263
612682993822,5cyclictest131rcu_preempt23:11:483
612682993822,5cyclictest131rcu_preempt23:11:483
612678993830,5cyclictest637282-21cron20:20:012
61267499388,6cyclictest720618-21seq00:19:351
612674993828,5cyclictest0-21swapper/123:30:001
61267499381,9cyclictest687964-21df22:45:141
61267499381,9cyclictest628991-21/usr/sbin/munin19:55:251
61267499381,8cyclictest726216-21fschecks_time00:35:171
61267499381,8cyclictest700533-21/usr/sbin/munin23:20:191
61267499381,7cyclictest663870-21/usr/sbin/munin21:35:171
612674993812,23cyclictest614616-21munin-node19:15:031
61267499381,10cyclictest713389-21unixbench_singl23:55:251
61267499381,10cyclictest691606-21grep22:55:151
612669993827,8cyclictest725793-21auditctl00:35:000
612682993731,4cyclictest685773-21kworker/u8:1+events_unbound22:54:413
612682993716,13cyclictest40-21ksoftirqd/321:55:003
612682993716,12cyclictest131rcu_preempt20:05:023
61267499372,8cyclictest613824-21grep19:10:221
61267499372,6cyclictest647259-21grep20:45:251
61267499372,6cyclictest647259-21grep20:45:251
61267499371,9cyclictest654921-21df_inode21:10:141
61267499371,9cyclictest639427-21grep20:25:161
61267499371,8cyclictest631640-21cat20:00:261
61267499371,6cyclictest708743-21/usr/sbin/munin23:45:241
61267499371,6cyclictest617865-21grep19:20:261
61267499371,5cyclictest715968-21grep00:05:181
61267499371,5cyclictest711711-21grep23:50:241
61267499371,5cyclictest711711-21grep23:50:241
61267499371,10cyclictest707152-21/usr/sbin/munin23:40:131
61267499371,10cyclictest674452-21memory22:05:201
61267499371,10cyclictest618574-21apt-get19:25:131
612669993728,6cyclictest694652-21sh23:05:000
612669993726,7cyclictest0-21swapper/023:35:010
61268299365,16cyclictest40-21ksoftirqd/320:30:253
612682993618,11cyclictest131rcu_preempt22:47:073
61267499362,10cyclictest1-21systemd00:13:341
61267499361,9cyclictest694240-21grep23:00:261
61267499361,9cyclictest671150-21ntp_states21:55:201
61267499361,12cyclictest706792-21auditctl23:40:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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