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2024-09-20 - 00:09

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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 50 highest latencies:
System rackeslot3s.osadl.org (updated Thu Sep 19, 2024 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8634669910899,6cyclictest0-21swapper/008:55:010
863476999312,6cyclictest131rcu_preempt08:25:032
86346699911,3cyclictest0-21swapper/008:25:020
863466999086,2cyclictest0-21swapper/010:30:020
863476998134,42cyclictest235-21systemd-journal11:35:002
863466997671,3cyclictest0-21swapper/009:55:020
863466997261,2cyclictest0-21swapper/011:20:010
86346699713,39cyclictest19050irq/34-mmc109:45:020
863476996913,50cyclictest272-21dbus-daemon12:30:002
863466996763,2cyclictest0-21swapper/008:50:010
863466996763,2cyclictest0-21swapper/008:15:020
86347699661,13cyclictest871711-21sshd09:46:152
86347699651,11cyclictest880550-21sshd12:38:292
86347699651,11cyclictest880550-21sshd12:38:292
86347699632,14cyclictest868133-21munin-run08:40:002
86347699631,9cyclictest877929-21sshd11:48:292
86347699631,12cyclictest363-21snmpd09:03:052
86347699622,15cyclictest863999-21munin-run07:20:012
86347699621,6cyclictest865531-21munin-run07:50:012
86347699621,6cyclictest863666-21sshd07:10:302
86347699621,5cyclictest878730-21munin-run12:05:012
86347699621,14cyclictest871491-21munin-run09:45:012
863476996126,31cyclictest1-21systemd12:00:012
86347699612,5cyclictest875847-21sshd11:06:292
86347699612,5cyclictest867844-21munin-run08:35:002
86347699612,13cyclictest874063-21munin-run10:35:012
86347699612,12cyclictest874606-21munin-run10:45:012
863466996155,3cyclictest0-21swapper/007:10:020
863466996151,6cyclictest12-21ksoftirqd/007:20:000
86347699608,37cyclictest291rcuc/209:15:022
86347699602,6cyclictest864961-21sshd07:36:192
86347699602,5cyclictest866551-21munin-run08:10:012
86347699601,12cyclictest878173-21sshd11:51:332
86346699609,13cyclictest12-21ksoftirqd/008:05:000
863476995927,27cyclictest873338-21sed10:20:022
86347699592,6cyclictest870710-21munin-run09:30:002
86347699592,12cyclictest869661-21munin-run09:10:002
86347699591,4cyclictest876678-21munin-run11:25:012
86347699591,4cyclictest870460-21munin-run09:25:012
86347699591,4cyclictest870460-21munin-run09:25:012
86347699591,13cyclictest363-21snmpd09:10:212
86347699582,15cyclictest868372-21munin-run08:45:012
863476995810,43cyclictest272-21dbus-daemon07:59:592
86346699587,10cyclictest12-21ksoftirqd/012:00:000
863466995839,15cyclictest1-21systemd10:35:010
86347699571,8cyclictest865771-21munin-run07:55:012
86347699571,5cyclictest873530-21sshd10:21:292
86347699571,5cyclictest871965-21sshd09:51:192
86347699571,4cyclictest363-21snmpd08:12:542
863476995712,40cyclictest0-21swapper/210:29:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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