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2024-11-04 - 08:48

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 50 highest latencies:
System rack9slot4s (updated Mon Nov 04, 2024 00:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
75189912701,5cyclictest7861-21expr19:25:131
75179912311207,21cyclictest0-21swapper/019:25:150
74212563518,30sleep10-21swapper/119:24:341
73412472417,32sleep00-21swapper/019:23:440
313302790,4sleep00-21swapper/021:50:220
301952620,3sleep041ktimersoftd/023:15:120
68532430,6sleep0751799cyclictest20:45:280
44972391,5sleep14544-21needreboot22:05:231
751799384,17cyclictest16923-21diskstats00:05:140
7517993811,5cyclictest81rcu_preempt23:35:190
317492351,11sleep10-21swapper/123:18:571
80592341,3sleep08070-21/usr/sbin/munin22:15:160
751899342,5cyclictest81rcu_preempt00:15:101
751799348,14cyclictest0-21swapper/020:39:200
751799343,17cyclictest0-21swapper/020:08:200
319272341,4sleep130944-21snmpd21:52:011
751899337,7cyclictest81rcu_preempt23:56:591
751899334,4cyclictest81rcu_preempt22:24:451
751799336,12cyclictest12758-21sed23:55:010
751799335,15cyclictest0-21swapper/020:50:160
751799332,15cyclictest3938-21hddtemp_smartct23:30:180
7517993319,8cyclictest20172-21iostat_ios19:55:220
228742331,28sleep122881-21iostat_ios00:20:231
751899327,4cyclictest81rcu_preempt20:34:331
751899325,4cyclictest81rcu_preempt20:02:451
751799329,6cyclictest17944-21kernelversion21:15:210
751799329,18cyclictest2220-21dbus-daemon20:16:550
751799321,6cyclictest24352-21pidof23:00:000
751799321,4cyclictest81rcu_preempt21:58:220
751799321,19cyclictest326-21wget20:30:120
751799321,18cyclictest20386-21pidof22:47:590
7517993211,7cyclictest13046-21runrttasks21:01:120
751899315,4cyclictest81rcu_preempt22:34:391
751899311,27cyclictest0-21swapper/119:36:041
7517993113,14cyclictest15097-21chrt21:08:000
7517993112,7cyclictest21390-21/usr/sbin/munin00:15:270
751799311,13cyclictest29137-21unixbench_singl00:35:310
38292311,9sleep10-21swapper/120:38:251
259072311,9sleep10-21swapper/123:01:451
181312311,9sleep10-21swapper/100:07:521
147062311,26sleep114764-21/usr/sbin/munin19:40:251
126632311,5sleep00-21swapper/022:25:550
79192301,5sleep10-21swapper/120:50:041
751899309,16cyclictest30944-21snmpd23:06:361
751899306,5cyclictest81rcu_preempt23:30:161
751899305,4cyclictest81rcu_preempt21:45:571
751899304,17cyclictest0-21swapper/121:28:471
751899302,4cyclictest81rcu_preempt20:06:031
7518993019,7cyclictest1942-21cut23:25:171
751899301,4cyclictest81rcu_preempt21:38:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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