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2025-02-13 - 06:48

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot6s.osadl.org (updated Wed Feb 12, 2025 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12965749910296,4cyclictest30-21rcuc/208:40:012
1296571999018,68cyclictest1334703-21/usr/sbin/munin11:20:241
1296571999014,73cyclictest1301477-21/usr/sbin/munin07:40:181
129656899859,73cyclictest0-21swapper/011:45:000
1296568998341,37cyclictest1335572-21munin-plugin-st11:30:010
129657199771,2cyclictest0-21swapper/107:25:021
129657199681,4cyclictest0-21swapper/108:00:011
129657199661,7cyclictest1306852-21/usr/sbin/munin08:15:201
1296571996433,27cyclictest0-21swapper/111:55:291
129657499634,29cyclictest30-21rcuc/212:10:002
129656899633,4cyclictest1338336-21latency_hist11:50:000
1296568996334,21cyclictest0-21swapper/009:49:590
129656899631,54cyclictest1309292-21latency_hist08:30:020
1296568996226,32cyclictest1330871-21cron10:54:590
129656899621,3cyclictest1321858-21/usr/sbin/munin09:50:080
1296568996131,24cyclictest20950irq/209-8000000.ethernet07:30:140
1296571996016,38cyclictest1666-21snmpd07:46:131
1296571996016,38cyclictest1666-21snmpd07:46:131
1296568996031,25cyclictest20950irq/209-8000000.ethernet07:35:260
1296568996020,4cyclictest1314001-1kworker/0:1H+mmc_complete10:00:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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