RX-888 and 3.0.25

✔ Now supported, kit available by the end of September 2020.
eckrot
Posts: 87
Joined: Fri Oct 02, 2020 4:25 pm

RX-888 and 3.0.25

#1

Unread post by eckrot »

Hi Simon,

I just received my RX-888 and tried to use it with latest SDRConsole. As a result, audio is always stuttering and RAM usage is constantly adding up to 20G (!) within a short period of time and thus stopping the complete system, which is an i5-1035G4 CPU with 16GB RAM. The same computer using RX-888 @30MS with HDSDR works without any problems. See appended screenshot.

Is there a memory leak?

73

Eckhard
Attachments
Screenshot-2020-10-02-180837.png

User avatar
Simon G4ELI
Posts: 2134
Joined: Thu Aug 06, 2020 7:27 am
Location: Mawnan Smith
Contact:

Re: RX-888 and 3.0.25

#2

Unread post by Simon G4ELI »

Try it at 32 MHz bandwidth, attach a screenshot.

As you don't have a GPU reduce the FFT: Ribbon Bar, View, Waterfall, Resolution, Reduced.
Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

eckrot
Posts: 87
Joined: Fri Oct 02, 2020 4:25 pm

Re: RX-888 and 3.0.25

#3

Unread post by eckrot »

Tried before and now again. Stuttering audio, whatever I reduce or what buffer I set to maximum. RAM counting up ...

73 Eckhard
Attachments
Screenshot-2020-10-02-195731.png

User avatar
Simon G4ELI
Posts: 2134
Joined: Thu Aug 06, 2020 7:27 am
Location: Mawnan Smith
Contact:

Re: RX-888 and 3.0.25

#4

Unread post by Simon G4ELI »

I need to know about your computer: https://www.sdr-radio.com/computer#ComputerDescription

Please enable Statistics in the waterfall, your CPU is very high, I can only assume due to FFT: Ribbon Bar, View, Waterfall Extra, Statistics.
Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

eckrot
Posts: 87
Joined: Fri Oct 02, 2020 4:25 pm

Re: RX-888 and 3.0.25

#5

Unread post by eckrot »

Here it is ...

73 Eckhard
Attachments
DxDiag.txt
(104.65 KiB) Downloaded 35 times
Screenshot-2020-10-02-205815.png

User avatar
Simon G4ELI
Posts: 2134
Joined: Thu Aug 06, 2020 7:27 am
Location: Mawnan Smith
Contact:

Re: RX-888 and 3.0.25

#6

Unread post by Simon G4ELI »

Hi,

I don't understand where the CPU is being used. Please show me the Performance window (example below) with a waterfall speed of 40 lines / second.
Attachments
Screenshot-2020-10-02-202133.png
Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

eckrot
Posts: 87
Joined: Fri Oct 02, 2020 4:25 pm

Re: RX-888 and 3.0.25

#7

Unread post by eckrot »

Ok, that made me wonder ... I stopped Windows search, than still synchronisation of offline files is running but this seems to be ok. Now, I can run the RX-888 at full bandwidth and all is fine. Also, the RAM is arround 1.8GB, not sure if it increases anymore, I'll let it run a while and watch it. So, it seems that other processes did occupy too much CPU load and that caused the problems.
However, the RAM eating was a real problem. I had to stop Console before passing the 20GB limit, because this stopped the whole system. That's strange.

Thank you very much for your support!

73 Eckhard
Attachments
Unbenannt.JPG

eckrot
Posts: 87
Joined: Fri Oct 02, 2020 4:25 pm

Re: RX-888 and 3.0.25

#8

Unread post by eckrot »

Another observation: I set the waterfall resolution back to default, stuttering is back and RAM eating also. There seems to be a correlation between CPU overload by waterfall FFT, stuttering and RAM eating.

73 Eckhard
Attachments
Screenshot-2020-10-02-225148.png
Unbenannt2.JPG

User avatar
Simon G4ELI
Posts: 2134
Joined: Thu Aug 06, 2020 7:27 am
Location: Mawnan Smith
Contact:

Re: RX-888 and 3.0.25

#9

Unread post by Simon G4ELI »

Your big problem is FFT - you really need a GPU to offload such a wide bandwidth, failing that you must used reduced resolution.

At ~8 or 4MHz bandwidth you should see a big difference in CPU load.

See my RX-666 notes: https://www.sdr-radio.com/rx-666
Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

eckrot
Posts: 87
Joined: Fri Oct 02, 2020 4:25 pm

Re: RX-888 and 3.0.25

#10

Unread post by eckrot »

I know ... thank you very much for helping!

73 Eckhard

Post Reply