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Old 01-07-2016, 08:22   #1
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Ais performance

I am experiencing very bad performance when very many AIS messages come in. Near speed 38k, processor Intel N2807, 8 GB, Win10 opencpn 4.4? Any suggestion what to do?

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Old 01-07-2016, 09:23   #2
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Re: Ais performance

Turn off and disconect your splitter.
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Old 01-07-2016, 10:17   #3
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Re: Ais performance

Quote:
Originally Posted by MaartenIH View Post
I am experiencing very bad performance when very many AIS messages come in. Near speed 38k, processor Intel N2807, 8 GB, Win10 opencpn 4.4? Any suggestion what to do?

Sent from my E6653 using Cruisers Sailing Forum mobile app
If the graphic unit is onboard, you may gain extra performance by setting the processor to Super Performance Mode (or equivalent).

Some software does not recognise this property and does not request the extra processing/graphic resources available from chip on board.

BTW W10 may be a bit of hog on this processor too. Why not XP?

b.
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Old 01-07-2016, 12:59   #4
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Re: Ais performance

While Opencpn is very slow on AIS calculations, processor and memory usage are low. So there is no problem. Therefore I don't understand what Opencpn is doing. Disconnecting the ais source give good performance immediately.
There is no splitter in use.
The Brix with N2807 has no special graphics processor, could that be the problem?

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Old 01-07-2016, 13:32   #5
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Re: Ais performance

Maarten...
Are you using OpenGL graphics? How many targets are are there?

Pavel
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Old 01-07-2016, 13:33   #6
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Re: Ais performance

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Originally Posted by MaartenIH View Post
While Opencpn is very slow on AIS calculations, processor and memory usage are low. So there is no problem. Therefore I don't understand what Opencpn is doing. Disconnecting the ais source give good performance immediately.
There is no splitter in use.
The Brix with N2807 has no special graphics processor, could that be the problem?

Sent from my A1-840FHD using Cruisers Sailing Forum mobile app
Are you forwarding nmea data?
Can post your opencpn.conf (in the 'about opencpn' )?
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Old 01-07-2016, 13:48   #7
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Re: Ais performance

I am forwarding only on the other com port which is only used for autopilot.

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Old 01-07-2016, 13:56   #8
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Re: Ais performance

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I am forwarding only on the other com port which is only used for autopilot.

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Are you filtering and forwarding only autopilot stuff ?
For testing could you try without forwarding?
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Old 01-07-2016, 13:58   #9
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Re: Ais performance

Maarten...
Make sure you are not sending the AIS messages to the other port, which I suppose is a 4800 baud one...

Pavel
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Old 01-07-2016, 14:02   #10
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Re: Ais performance

I will test on the boat tomorrow with all forwarding off. That's right, autopilot side 4800. Thank sofar.

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