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2026-05-24 - 01:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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.

Total number of samples: 50.5 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 rack5slot7s.osadl.org (updated Sat May 23, 2026 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27916224532199,94sleep00-21swapper07:08:310
281249916719,103cyclictest20449-21apt-get09:40:320
281249916314,121cyclictest5166-21/usr/sbin/munin08:05:130
281249916215,103cyclictest1909-21wc07:45:050
281249916211,125cyclictest405-21apt-get07:36:370
281249916117,117cyclictest8049-21apt-get11:41:300
281249916016,118cyclictest6220-21apt-get11:32:000
281249915928,20cyclictest0-21swapper08:30:550
281249915814,121cyclictest32006-21awk10:47:100
281249915722,21cyclictest0-21swapper09:00:560
281249915716,112cyclictest13991-21/usr/sbin/munin12:15:460
281249915715,26cyclictest10802-21apt-get08:40:140
281249915710,122cyclictest4231-21cron08:00:000
281249915614,118cyclictest24957-21awk10:05:470
281249915613,119cyclictest9991-21apt-get11:50:180
281249915611,123cyclictest23230-21uname09:55:420
281249915526,37cyclictest1943-1kworker/u3:211:05:200
281249915520,27cyclictest1157-21apt-get11:01:130
281249915514,118cyclictest13882-21apt09:00:010
281249915513,117cyclictest7713-21grep11:36:010
281249915512,31cyclictest16915-21wc09:16:000
281249915511,26cyclictest15585-21grep12:25:050
28124991549,101cyclictest5016-21grep08:01:050
281249915420,29cyclictest6759-21apt-get08:15:210
281249915415,119cyclictest30880-21wc10:41:000
281249915414,24cyclictest3215-21diskstats11:10:380
281249915412,24cyclictest20168-21timerandwakeup09:36:030
281249915320,103cyclictest29792-21ntp_states10:35:500
281249915319,94cyclictest1162-21munin-run11:00:020
281249915315,25cyclictest11835-21memory08:45:420
281249915313,117cyclictest9791-21sort11:46:090
281249915312,29cyclictest28563-21sshd10:29:100
281249915312,116cyclictest3968-21wc11:15:220
281249915311,117cyclictest11395-21grep11:56:030
28124991529,100cyclictest18638-21unixbench_singl09:26:030
281249915220,31cyclictest16529-21diskstats12:30:330
281249915118,94cyclictest27183-21df10:20:260
281249915117,111cyclictest10086-21df_inode08:35:310
281249915116,114cyclictest28933-21munin-node07:15:050
281249915020,28cyclictest12403-21apt-get12:05:200
281249915018,28cyclictest17870-21users12:36:060
281249915018,25cyclictest4841-21df_inode11:20:280
281249915017,28cyclictest26112-21users10:11:060
281249915014,24cyclictest12498-21df_inode08:50:300
281249915012,114cyclictest6013-21cut11:26:010
281249915012,114cyclictest20042-21snmpd10:30:490
281249915012,114cyclictest17408-21sendmail-mta09:20:410
281249915011,116cyclictest20042-21snmpd10:17:010
281249914913,30cyclictest20042-21snmpd07:17:060
281249914913,24cyclictest2758-21apt-get07:50:140
281249914910,26cyclictest22500-21missed_timers09:50:470
281249914815,26cyclictest21459-21/usr/sbin/munin09:46:030
281249914813,22cyclictest32754-21grep10:51:100
281249914812,112cyclictest24009-21/usr/sbin/munin10:00:370
281249914811,26cyclictest12131-21wc12:00:580
281249914811,114cyclictest15621-21/usr/sbin/munin12:26:040
281249914811,113cyclictest13806-21unixbench_singl12:10:590
281249914810,25cyclictest20042-21snmpd07:30:570
281249914716,25cyclictest7699-21diskstats08:20:300
281249914714,25cyclictest31256-21sed07:25:470
281249914712,114cyclictest1962-21/usr/sbin/munin07:45:550
281249914630,92cyclictest5964-21apt-get08:10:140
281249914619,101cyclictest18923-21diskstats09:30:310
281249914617,104cyclictest15769-21irqstats09:10:400
281249914613,109cyclictest8596-21latency08:25:420
281249914610,25cyclictest15411-21grep09:06:010
281249914316,24cyclictest30299-21diskstats07:20:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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