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2025-01-14 - 07:00

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 100 highest latencies:
System rack4slot6s.osadl.org (updated Tue Jan 14, 2025 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1600021650,3sleep016057-21ntp_kernel_pll_20:00:210
649721330,2sleep06499-21ls23:55:160
1088921330,3chrt10883-21munin-run00:15:010
583121040,3sleep05830-21/usr/sbin/munin19:20:240
2213221030,3sleep022168-21sort20:25:010
701521010,4sleep07016-21ntp_states21:35:230
286962990,4sleep028721-21/usr/sbin/munin23:10:210
194082980,3sleep019442-21netstat22:30:180
42452930,4sleep04163-21/usr/sbin/munin19:15:130
19432875,9sleep01961-21uname23:35:160
121182840,4sleep012175-21/usr/sbin/munin19:45:200
294102820,3sleep029416-21cpu20:55:130
174912780,3sleep017553-21grep20:05:270
133312784,9sleep013359-21irqstats19:50:210
271152745,58sleep027128-21ntp_states20:45:200
164127419,32sleep01648-21/usr/sbin/munin19:05:140
206732705,55sleep020689-21memory22:35:180
241962660,3sleep024195-21sendmail_mailqu22:50:210
2786996136,16cyclictest11290-21/usr/sbin/munin00:15:210
2786996121,14cyclictest25266-21snmpd23:42:280
2786996110,17cyclictest5431-21/usr/sbin/munin21:30:150
278699599,18cyclictest26661-21/usr/sbin/munin23:00:220
2786995935,14cyclictest18711-21/usr/sbin/munin20:10:280
2786995933,16cyclictest10294-21/usr/sbin/munin21:50:160
278699589,17cyclictest25706-21irqstats20:40:170
278699589,15cyclictest2123-21/usr/sbin/munin21:15:150
278699588,18cyclictest14868-21/usr/sbin/munin22:10:150
278699587,17cyclictest14309-21/usr/sbin/munin00:30:260
2786995832,18cyclictest4807-21runrttasks21:25:510
2786995810,17cyclictest7858-21irqstats00:00:160
2786995810,17cyclictest108-21systemd-journal19:29:170
278699579,16cyclictest29681-21/usr/sbin/munin23:15:280
278699579,16cyclictest13323-21sshd22:01:150
278699579,15cyclictest12626-21/usr/sbin/munin00:20:250
278699577,16cyclictest2883-21/usr/sbin/munin19:10:250
2786995734,15cyclictest5262-21/usr/sbin/munin23:50:120
2786995731,17cyclictest28921-21runrttasks20:52:040
2786995711,17cyclictest846-21/usr/sbin/munin21:10:240
278699568,17cyclictest19653-21/usr/sbin/munin20:15:280
278699568,16cyclictest15897-21/usr/sbin/munin22:15:260
278699568,15cyclictest11311-21/usr/sbin/munin21:55:300
278699567,16cyclictest111602sleep019:40:300
2786995632,14cyclictest25363-21/usr/sbin/munin22:55:200
2786995631,16cyclictest31552-21runrttasks21:02:200
2786995610,14cyclictest25266-21snmpd20:25:130
278699559,17cyclictest8653-21/usr/sbin/munin19:30:340
278699559,15cyclictest14545-21chrt19:55:130
278699559,14cyclictest8082-21/usr/sbin/munin21:40:110
278699559,14cyclictest31005-21/usr/sbin/munin23:20:120
278699558,21cyclictest15644-21egrep00:35:120
278699557,16cyclictest24249-21/usr/sbin/munin20:35:130
2786995532,14cyclictest676-21/usr/sbin/munin23:30:130
2786995530,15cyclictest23044-21/usr/sbin/munin20:30:110
2786995528,17cyclictest0-21swapper23:05:430
2786995517,13cyclictest236312chrt22:49:410
278699548,16cyclictest21808-21/usr/sbin/munin22:40:140
278699546,17cyclictest32005-21/usr/sbin/munin21:05:190
2786995431,14cyclictest9847-21/usr/sbin/munin19:35:280
2786995429,16cyclictest18791-21runrttasks22:27:350
278699536,16cyclictest14265-21wc00:30:010
278699529,17cyclictest4032-21users21:20:270
278699528,17cyclictest9498-21seq00:09:160
278699527,15cyclictest14102-21chrt22:06:490
278699527,14cyclictest17621-21chrt22:20:250
2786995226,16cyclictest32617-21runrttasks23:27:590
278699519,16cyclictest9500-21seq21:46:450
2786995128,15cyclictest4699-21runrttasks23:47:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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