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2026-07-29 - 10:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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 100 highest latencies:
System rack4slot1s.osadl.org (updated Wed Jul 29, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1553921230,1sleep10-21swapper/123:58:451
1553921230,1sleep10-21swapper/123:58:451
1780121170,2chrt0-21swapper/219:43:512
1780121170,2chrt0-21swapper/219:43:512
40221130,3chrt0-21swapper/223:18:462
40221130,3chrt0-21swapper/223:18:462
81062960,1chrt8105-21fschecks_count23:38:471
81062960,1chrt8105-21fschecks_count23:38:471
81062960,1chrt8105-21fschecks_count23:38:471
105762920,3sleep20-21swapper/222:18:482
105762920,3sleep20-21swapper/222:18:482
293862770,3chrt0-21swapper/221:43:192
293862770,3chrt0-21swapper/221:43:192
303622700,2sleep20-21swapper/221:43:512
303622700,2sleep20-21swapper/221:43:512
130142700,3sleep20-21swapper/220:58:482
204892610,3sleep20-21swapper/222:43:532
204892610,3sleep20-21swapper/222:43:532
36572580,1chrt3658-21/usr/sbin/munin20:33:471
36572580,1chrt3658-21/usr/sbin/munin20:33:471
188622580,3sleep20-21swapper/222:38:552
188622580,3sleep20-21swapper/222:38:552
12972560,2sleep00-21swapper/023:18:560
12972560,2sleep00-21swapper/023:18:560
187592540,3sleep20-21swapper/221:13:482
187592540,3sleep20-21swapper/221:13:482
225852510,3sleep10-21swapper/121:23:491
225852510,3sleep10-21swapper/121:23:491
149242510,3sleep1281ktimers/121:03:461
149242510,3sleep1281ktimers/121:03:461
269972460,3sleep30-21swapper/320:08:493
321212450,2sleep132049-21latency_hist00:43:371
321212450,2sleep132049-21latency_hist00:43:371
269022440,3sleep20-21swapper/220:08:482
196562430,1sleep10-21swapper/119:48:531
93522390,3sleep20-21swapper/222:13:542
108912390,3sleep20-21swapper/219:23:572
108912390,3sleep20-21swapper/219:23:572
5845993825,10cyclictest17295-21/usr/sbin/munin00:03:570
129102370,3chrt0-21swapper/322:23:523
129102370,3chrt0-21swapper/322:23:523
5846993630,4cyclictest686-21gltestperf23:18:491
5846993630,4cyclictest686-21gltestperf23:18:491
5846993629,5cyclictest19445-21threads21:13:571
5846993629,5cyclictest19445-21threads21:13:571
5846993530,3cyclictest5844-21cyclictest22:44:231
5846993530,3cyclictest5844-21cyclictest22:44:231
5846993528,5cyclictest6329-21fschecks_time23:33:471
5846993528,5cyclictest6329-21fschecks_time23:33:471
5846993528,5cyclictest6329-21fschecks_time23:33:471
5846993528,5cyclictest12966-21fschecks_count20:58:481
5846993527,6cyclictest16122-21fschecks_count22:33:461
5846993527,6cyclictest16122-21fschecks_count22:33:461
5846993426,6cyclictest13799-21fschecks_time23:53:491
5846993426,6cyclictest13799-21fschecks_time23:53:491
5849993317,13cyclictest89792chrt20:48:403
5849993317,13cyclictest89792chrt20:48:403
5846993328,3cyclictest5844-21cyclictest19:58:521
5846993328,3cyclictest5844-21cyclictest19:58:521
5846993327,5cyclictest31430-21kernelversion23:13:501
5846993327,5cyclictest31430-21kernelversion23:13:501
5846993327,4cyclictest5844-21cyclictest20:55:141
5846993326,5cyclictest13131-21latency_hist19:33:341
5846993326,5cyclictest13131-21latency_hist19:33:341
5846993325,6cyclictest9629-21unixbench-2d22:13:561
5846993227,3cyclictest26960-21cron23:03:341
5846993227,3cyclictest26960-21cron23:03:341
5845993227,3cyclictest20020-21gltestperf22:43:470
5845993227,3cyclictest20020-21gltestperf22:43:470
584999311,24cyclictest17421-21taskset00:03:463
584999311,24cyclictest17421-21taskset00:03:463
5846993126,4cyclictest595-21sshd19:39:181
5846993126,4cyclictest595-21sshd19:39:181
5846993125,4cyclictest29211-21fschecks_count23:08:491
5846993125,4cyclictest29211-21fschecks_count23:08:491
5846993123,6cyclictest17543-21fschecks_time00:03:471
5845993125,5cyclictest12945-21netstat22:23:520
5845993125,5cyclictest12945-21netstat22:23:520
5845993124,6cyclictest10484-21fschecks_count22:18:480
5845993124,6cyclictest10484-21fschecks_count22:18:480
5845993123,6cyclictest19088-21needreboot21:13:520
5845993123,6cyclictest19088-21needreboot21:13:520
5845993116,12cyclictest0-21swapper/000:03:410
5845993116,12cyclictest0-21swapper/000:03:410
5846993026,2cyclictest0-21swapper/100:23:331
5846993026,2cyclictest0-21swapper/100:23:331
5846993025,3cyclictest5925-21needreboot20:38:521
5845993026,3cyclictest5844-21cyclictest20:45:580
5845993026,3cyclictest5844-21cyclictest20:45:580
5845993024,5cyclictest1692-21ntp_offset21:53:540
5845993024,5cyclictest16223-21cut22:33:460
5845993024,5cyclictest16223-21cut22:33:460
5845993024,4cyclictest19079-21unixbench_singl22:38:560
5845993024,4cyclictest19079-21unixbench_singl22:38:560
5845993023,5cyclictest14818-21fschecks_count21:03:450
5845993023,5cyclictest14818-21fschecks_count21:03:450
5845993021,7cyclictest13470-21netstat20:58:530
265942300,1sleep026651-21/usr/sbin/munin21:33:530
265942300,1sleep026651-21/usr/sbin/munin21:33:530
67202291,5sleep06854-21fschecks_time22:08:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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