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2023-12-04 - 04:03

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

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 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 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rack4slot6s.osadl.org (updated Mon Dec 04, 2023 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1702322480,2sleep017026-21latency_hist20:20:020
1497122170,2sleep014972-21mailstats20:10:340
1676421540,3sleep016763-21/usr/sbin/munin22:35:260
49721410,3sleep0501-21wc19:15:250
2954421130,4sleep028982-21/usr/sbin/munin23:25:400
674121110,3sleep06743-21latency_hist19:40:020
1543621100,3sleep015361-21/usr/sbin/munin22:30:240
2883821030,4sleep028853-21munin-run23:25:010
227782950,4sleep022847-21/usr/sbin/munin20:40:350
50192940,3sleep05017-21ntp_kernel_pll_21:40:300
4852940,2sleep0484-21entropy23:40:230
240982875,10sleep024117-21ntp_states23:05:310
319792760,2sleep031977-21swap19:10:350
3030127117,28sleep030352-21/usr/sbin/munin19:05:240
325212640,2sleep032522-21ls21:20:010
31394996336,16cyclictest13715-21/usr/sbin/munin20:05:340
31394996012,16cyclictest1722-21/usr/sbin/munin19:20:200
3139499598,16cyclictest7607-21sshd19:42:180
31394995925,22cyclictest0-21swapper00:33:180
3139499588,17cyclictest14069-21/usr/sbin/munin22:25:350
3139499588,16cyclictest31829-21/usr/sbin/munin23:35:240
31394995835,15cyclictest13263-21/usr/sbin/munin22:20:290
31394995835,14cyclictest3943-21/usr/sbin/munin23:55:340
31394995822,12cyclictest108-21systemd-journal20:24:280
31394995820,13cyclictest32621-21sshd21:20:180
3139499579,15cyclictest9369-21/usr/sbin/munin19:50:390
3139499579,15cyclictest8752-21/usr/sbin/munin22:00:230
3139499579,15cyclictest108-21systemd-journal22:10:290
3139499577,17cyclictest30023-21/usr/sbin/munin21:10:290
3139499577,16cyclictest2833-21/usr/sbin/munin23:50:310
3139499577,16cyclictest25099-21ntpq20:50:270
31394995733,15cyclictest20331-21/usr/sbin/munin22:50:290
31394995733,15cyclictest18513-21/usr/sbin/munin20:25:200
31394995712,15cyclictest16707-21rs:main0
31394995710,16cyclictest5884-21/usr/sbin/munin00:05:210
31394995710,15cyclictest915-21df21:25:140
3139499569,15cyclictest17963-21/usr/sbin/munin22:40:260
3139499569,14cyclictest6998-21/usr/sbin/munin21:50:230
3139499569,14cyclictest4070-21cron19:30:000
3139499568,16cyclictest24075-21cat20:45:350
3139499568,16cyclictest10833-21memory19:55:260
3139499567,17cyclictest27303-21lockfile-create21:00:020
3139499567,13cyclictest217442sleep022:55:360
31394995634,14cyclictest7757-21df_inode00:15:170
31394995623,22cyclictest27573-21sendmail-msp23:20:010
31394995610,15cyclictest4207-21/usr/sbin/munin19:30:320
3139499557,18cyclictest29597-21chrt21:07:490
3139499557,15cyclictest22536-21/usr/sbin/munin23:00:370
31394995531,14cyclictest27881-21/usr/sbin/munin21:00:360
31394995530,15cyclictest31364-21runrttasks23:34:410
31394995529,15cyclictest12560-21runrttasks22:19:320
31394995528,16cyclictest291-21lldpd20:39:580
3139499549,15cyclictest9723-21/usr/sbin/munin00:25:160
3139499548,16cyclictest8605-21munin-plugin-st22:00:000
3139499547,15cyclictest12523-21seq20:00:370
3139499547,14cyclictest4594-21munin-run21:40:000
31394995432,14cyclictest2081-21runrttasks23:48:350
31394995429,16cyclictest6294-21runrttasks21:47:320
31394995427,16cyclictest25160-21/usr/sbin/munin23:10:200
31394995416,25cyclictest5591-21sort00:05:010
31394995411,16cyclictest7315-21seq00:13:000
31394995410,16cyclictest8229-21/usr/sbin/munin19:45:230
31394995410,16cyclictest12936-21grep00:40:030
3139499539,16cyclictest2707-21runrttasks21:30:380
31394995310,16cyclictest9598-21munin-run00:25:000
3139499529,16cyclictest10348-21seq22:07:490
31394995230,14cyclictest19564-21runrttasks22:48:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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