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2024-12-01 - 21:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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.
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 100 highest latencies:
System rackeslot5s.osadl.org (updated Sun Dec 01, 2024 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1836099275,21cyclictest22-21ksoftirqd/111:00:001
18365992523,1cyclictest12157-21cron11:25:003
18359992523,1cyclictest7072-21munin-plugin-st10:05:000
1835999251,23cyclictest5309-21perf07:50:000
1835999250,24cyclictest0-21swapper/009:11:310
18365992421,2cyclictest2988-21cron08:50:003
18359992421,2cyclictest7816-21munin-run09:00:000
1836599230,22cyclictest9415-21apt-get12:25:023
1836599230,22cyclictest17781-21apt-get09:21:273
18361992321,1cyclictest22596-21apt-get11:46:282
1836199230,22cyclictest32628-21munin-plugin-st08:45:002
1836199230,22cyclictest12162-21perf11:25:002
18360992323,0cyclictest0-21swapper/107:21:271
18360992320,2cyclictest22187-21basename10:40:001
1836099230,1cyclictest0-21swapper/111:30:001
18359992323,0cyclictest0-21swapper/008:26:270
18359992321,1cyclictest2166-21awk11:05:000
18359992321,1cyclictest10478-21sh08:00:000
18359992320,2cyclictest22575-21awk08:25:000
18359992320,2cyclictest14584-21cron12:35:000
1835999230,22cyclictest23202-21sendmail07:20:000
1835999230,22cyclictest0-21swapper/010:41:280
18365992220,1cyclictest20807-21munin-run07:15:003
1836599220,21cyclictest5402-21cat08:55:003
1836599220,21cyclictest4975-21apt-get12:16:293
1836599220,21cyclictest25376-21apt-get08:31:293
1836599220,21cyclictest0-21swapper/310:40:003
1836599220,1cyclictest8066-21apt-get10:11:243
1836599220,1cyclictest22552-21turbostat08:25:003
1836599220,1cyclictest2208-21ls12:10:003
18361992220,1cyclictest24675-21munin-run09:35:002
18361992220,1cyclictest19424-21apt-get11:40:022
18361992220,1cyclictest17681-21latency_hist08:15:002
18361992220,1cyclictest0-21swapper/212:00:002
1836199220,21cyclictest5038-21apt-get10:01:302
1836199220,1cyclictest313-21systemd-journal12:35:002
18360992222,0cyclictest0-21swapper/110:21:281
18360992220,1cyclictest0-21swapper/112:25:021
18360992220,1cyclictest0-21swapper/108:15:001
1836099220,21cyclictest0-21swapper/111:45:001
1836099220,21cyclictest0-21swapper/110:01:301
1836099220,1cyclictest7719-21apt-get11:16:281
1836099220,1cyclictest14602-21turbostat12:35:001
1836099220,1cyclictest0-21swapper/108:35:001
18359992220,1cyclictest593-21dbus-daemon12:10:000
1835999220,21cyclictest32275-21idleruntime-cro09:50:000
1835999220,21cyclictest30413-21perf07:35:000
1835999220,21cyclictest20054-21apt-get11:40:030
1835999220,21cyclictest10182-21apt-get12:26:270
1835999220,21cyclictest0-21swapper/011:50:000
1835999220,21cyclictest0-21swapper/009:01:280
1835999220,21cyclictest0-21swapper/008:36:290
1835999220,21cyclictest0-21swapper/007:26:280
1835999220,1cyclictest0-21swapper/011:56:270
18365992120,1cyclictest0-21swapper/308:26:283
18365992120,0cyclictest8179-21apt-get09:01:293
18365992120,0cyclictest24944-21apt-get10:46:293
1836599210,20cyclictest17679-21apt-get10:31:333
1836599210,20cyclictest0-21swapper/311:41:283
1836599210,20cyclictest0-21swapper/309:11:313
1836599210,0cyclictest20237-21apt-get09:26:273
1836599210,0cyclictest0-21swapper/311:11:313
1836599210,0cyclictest0-21swapper/310:01:303
1836599210,0cyclictest0-21swapper/308:56:273
18361992121,0cyclictest12883-21apt-get10:21:282
18361992120,1cyclictest834-21/usr/sbin/munin07:41:292
18361992119,1cyclictest2536-21apt-get11:06:282
1836199210,20cyclictest8458-21apt-get07:56:272
1836199210,20cyclictest0-21swapper/210:51:282
1836199210,1cyclictest4932-21apt-get11:11:312
1836199210,1cyclictest28170-21apt-get08:36:282
1836199210,0cyclictest30238-21apt-get09:46:282
1836199210,0cyclictest12536-21apt-get11:26:312
1836199210,0cyclictest0-21swapper/210:16:282
18360992121,0cyclictest32643-21apt-get09:51:361
18360992121,0cyclictest0-21swapper/112:36:291
18360992121,0cyclictest0-21swapper/107:56:271
1836099210,20cyclictest13269-21apt-get08:06:271
1836099210,20cyclictest0-21swapper/111:31:321
1836099210,0cyclictest20537-21apt-get08:21:281
1836099210,0cyclictest0-21swapper/111:36:281
1836099210,0cyclictest0-21swapper/109:56:291
1836099210,0cyclictest0-21swapper/108:46:291
18359992121,0cyclictest0-21swapper/010:36:280
18359992120,0cyclictest0-21swapper/008:16:270
18359992120,0cyclictest0-21swapper/008:16:270
18359992119,1cyclictest17295-21idleruntime-cro10:30:000
18359992119,1cyclictest0-21swapper/011:10:000
18359992119,1cyclictest0-21swapper/010:55:000
18359992119,1cyclictest0-21swapper/010:25:000
1835999210,21cyclictest0-21swapper/007:21:260
1835999210,20cyclictest0-21swapper/008:46:290
1835999210,0cyclictest0-21swapper/012:16:290
1835999210,0cyclictest0-21swapper/012:11:320
18365992020,0cyclictest0-21swapper/311:01:313
18365992020,0cyclictest0-21swapper/310:41:283
18365992020,0cyclictest0-21swapper/309:16:283
18365992020,0cyclictest0-21swapper/308:01:283
18365992019,1cyclictest20158-21turbostat08:20:003
18365992019,1cyclictest20158-21turbostat08:20:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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