Hi Alan,
Thanks for those results, 800MHz is fairly slow machine, so interesting
to see how it goes:
1/ How did you test it on 700D? (33.raw from 700D blog post is a good
source, tick "loop" checkbox on file select dialog)
2/ Any sign of audio break up or resyncs?
3/ There are some FIFO & PortAudio debug counters at the bottom on the
Tools-Options dialog. In particular when receiving, are any of the PA1
line counters incrementing?
Thanks,
David
On 04/05/18 18:07, Alan Beard wrote:
Hi David and all,
CPU usage running 700D Ver 3572 is quite OK, 100% of one CPU of a Quad Core.
I run a Quad Core box: ASRock QC5000/ITX a Low Power motherboard
vendor_id : AuthenticAMD
cpu family : 22
model : 0
model name : AMD A4-5000 APU with Radeon(TM) HD Graphics
stepping : 1
microcode : 0x700010b
cpu MHz : 800.000
cache size : 2048 KB
fpu : yes
fpu_exception : yes
bogomips : 2994.54
top - 18:32:54 up 115 days, 4:43, 4 users, load average: 1.46, 1.13, 0.70
Tasks: 291 total, 3 running, 288 sleeping, 0 stopped, 0 zombie
%Cpu(s): 31.8 us, 4.2 sy, 0.0 ni, 63.9 id, 0.0 wa, 0.0 hi, 0.1 si, 0.0
st
KiB Mem : 7592440 total, 205480 free, 1813748 used, 5573212 buff/cache
KiB Swap: 8191996 total, 6313456 free, 1878540 used. 5352648 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
28410 alanb 20 0 1205880 56316 38656 R 96.4 0.7 5:33.78 freedv
11081 alanb 20 0 368284 43696 27040 S 14.9 0.6 282:15.78 Xorg
This should be indicative of a modern laptop.
Keep smiling
Alan VK2ZIW
On Fri, 4 May 2018 14:55:21 +0930, David Rowe wrote
No need for alarm .... it's consistent with previous versions of
FreeDV GUI that people have been running since 2012.
Optimisation of the DSP code won't help, as it doesn't appear to be
in the modem/codec/FEC, e.g. running the FreeDV stack from the
command line over 60 second samples:
$ time ./freedv_rx 1600 ~/Desktop/ve9qrp_1600_8010.raw /dev/null
real 0m0.748s
$ time ./freedv_rx 700D ~/Desktop/ve9qrp_700d.wav /dev/null
real 0m0.766s
Perhaps 1% CPU.
It's most likely in the GUI code. If anyone would like to take a
look at this, I'd be interested in the results of profiling and will
happily accept patches to reduce CPU. This is a job anyone with
general C/C++ coding experience could do - you don't need to
understand the DSP.
- David
On 04/05/18 12:51, glen english wrote:
or rather either that's alot of CPU or the cache is thrashing
Is it using SSD / NEON vector instructions ?
On 4/05/2018 1:11 PM, Steve wrote:
The lights aren't dimming in the office, the UPS isn't beeping, and
crows aren't falling from the sky :-)
On Thu, May 3, 2018 at 10:07 PM, glen english <g...@cortexrf.com.au
<mailto:g...@cortexrf.com.au>> wrote:
How many watts is that taking?
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Consider the Christmas child.
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