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2023-06-07 - 01:07

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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 
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ARM TI AM3354 @800 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #9, slot #8
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
Total number of samples: 50 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 376 highest latencies:
System rack9slot8s.osadl.org (updated Tue Jun 06, 2023 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
350501820,0irq/20-4900000019192-21kworker/0:107:09:430
81950930,0irq/47-4a10000015467-21ssh12:11:310
81950920,0irq/47-4a10000016405-21kworker/u2:111:10:010
81950910,0irq/47-4a10000028326-21kworker/u2:010:33:280
81950910,0irq/47-4a10000025974-21awk11:20:030
81950890,0irq/47-4a1000003314-21sh10:25:000
81950890,0irq/47-4a10000013250-21kworker/u2:112:20:500
81950880,0irq/47-4a1000003864-21ssh10:26:080
81950880,0irq/47-4a10000028922-21run-parts08:00:020
81950880,0irq/47-4a10000028326-21kworker/u2:010:51:110
81950880,0irq/47-4a10000022647-21ssh12:28:150
81950880,0irq/47-4a1000002189-21ssh11:40:340
81950880,0irq/47-4a10000014837-21ssh09:30:330
81950870,0irq/47-4a10000030749-21ssh10:12:300
81950870,0irq/47-4a10000029193-21ssh11:27:500
81950870,0irq/47-4a10000026850-21rm10:03:030
81950870,0irq/47-4a10000021807-21apt07:15:010
81950870,0irq/47-4a10000013786-21ssh09:27:580
81950870,0irq/47-4a10000013250-21kworker/u2:112:07:090
81950870,0irq/47-4a10000012723-21ssh09:25:020
81950870,0irq/47-4a10000010072-21rm10:41:190
81850870,0irq/46-4a1000001078-21ssh11:38:120
81950860,0irq/47-4a1000009876-21ssh09:17:180
81950860,0irq/47-4a1000008652-21ssh09:14:230
81950860,0irq/47-4a1000006174-21munin-run11:50:010
81950860,0irq/47-4a1000004896-21kworker/u2:011:55:340
81950860,0irq/47-4a10000031288-21ssh11:32:410
81950860,0irq/47-4a10000028286-21rm10:06:290
81950860,0irq/47-4a10000026566-21kworker/u2:611:23:280
81950860,0irq/47-4a10000023928-21ssh12:31:060
81950860,0irq/47-4a10000023739-21awk07:25:000
81950860,0irq/47-4a1000002245-21snmpd10:46:580
81950860,0irq/47-4a10000019422-21ssh09:44:040
81950860,0irq/47-4a10000017766-21runrttasks09:38:450
81950860,0irq/47-4a10000017737-21ssh11:00:050
81950850,0irq/47-4a1000008497-21ssh10:37:280
81950850,0irq/47-4a100000457-21ssh10:17:500
81950850,0irq/47-4a10000025956-21munin-run07:40:020
81950850,0irq/47-4a10000025239-21ssh09:59:080
81950850,0irq/47-4a1000002245-21snmpd08:56:260
81950850,0irq/47-4a1000002245-21snmpd08:06:150
81950850,0irq/47-4a10000021921-21ssh09:50:410
81950850,0irq/47-4a10000020868-21rm09:48:050
81950850,0irq/47-4a10000012205-21kworker/u2:211:12:270
81950850,0irq/47-4a10000011660-21rm12:02:450
81950840,0irq/47-4a1000006897-21diskmemload11:50:240
81950840,0irq/47-4a10000032646-21munin-run08:25:020
81950840,0irq/47-4a10000019839-21kworker/u2:207:15:110
81950840,0irq/47-4a10000017280-21ssh12:15:430
81950840,0irq/47-4a1000001674-21munin-run08:35:010
81850840,0irq/46-4a10000031937-21latency_hist08:20:020
81850840,0irq/46-4a1000002018-21in:imuxsock12:38:330
81950830,0irq/47-4a10000024066-21kworker/u2:007:30:020
81950830,0irq/47-4a10000018657-21ssh11:02:120
81950820,0irq/47-4a10000028176-21awk07:55:010
81950820,0irq/47-4a1000002064-21runrttasks08:37:150
81850820,0irq/46-4a10000027443-21awk07:50:020
81850820,0irq/46-4a10000026701-21idleruntime-cro07:45:000
81850810,0irq/46-4a10000031487-21kworker/u2:308:30:030
81950800,0irq/47-4a1000006326-21runrttasks09:05:330
81950800,0irq/47-4a10000031059-21sshd08:14:340
81950800,0irq/47-4a10000024830-21runrttasks07:32:050
61252800,0chrt5782-21kworker/u2:609:04:550
81950790,0irq/47-4a10000029227-21sshd08:01:330
27742780,0sleep030738-21kworker/u2:008:41:430
81850760,0irq/46-4a1000003191-21apt-get08:45:300
81850720,0irq/46-4a1000000-21swapper08:52:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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