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Hello,
If the same occurs with any program using IQFeed then
it is clearly IQFeed issue. However "slow" is rather subjective.
What interval are you using ? If you use tick interval you need
to know that one day of tick data can be easily 10MB download.
To get the idea on amount of data required you can multiply:
100 bytes * number_of_bars_per_minute(i.e.interval) * 1440 (minutes per day) * number_of_days * number_of_symbols
Also, as far as I know, all internet based feeds put a cap on bandwidth single user
can use because for example, in Japan 100mbps connections to
home are available and 100 such users would be able to saturate 10Giga pipe.
So they need to limit bandwidth per user to prevent brining servers to their knees.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "przemyslawuk" <przemyslawuk@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Wednesday, November 05, 2008 1:40 PM
Subject: [amibroker] "SLOW" backfill and delay with IQFeed
> Hi,
> I get problems with the datafeed which I call "slow". I have plenty of
> internet bandwidth, powerful PC and yet at the end of the day I get
> the quotes streaming for 3 minutes after the market close. And
> yesterday I was streaming 4 symbols only. I use Amibroker and
> Quotetracker with the IQfeed and the problem is the same with both
> programs, which makes me think that the problem is IQFeed.
> One more thing I dont understand is why IQ connection manager does not
> use the entire available internet bandwidth? When I run backfill for a
> few symbols IQ connection manager shows that the bandwidth used is
> something like 0.4kb/s while I can download multiple large files from
> the internet at 500kb/s each.
> This way backfilling 60 symbols, 2 day backfill , takes me 1 hour. How
> much data is is that?- I guess no more than 2Mb.... Then why does it
> take so long ??????
>
> Would it be the AB plugin for IQFeed or IQ connection manager?
>
>
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------------------------------------
**** IMPORTANT ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
*********************
TO GET TECHNICAL SUPPORT from AmiBroker please send an e-mail directly to
SUPPORT {at} amibroker.com
*********************
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
For other support material please check also:
http://www.amibroker.com/support.html
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