|
PureBytes Links
Trading Reference Links
|
It should take less. Maybe you have firewall problems.
I checked and it backfills with speed of about 500+ bars per second, so
backfill of 1000 bars of single symbol using IQFeed takes about 2 seconds on my end (2mbps DSL)
Indeed it used to be faster in the past (3 or 4 times faster from memory), so I guess some limits were added by IQFeed recently.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "przemyslawuk" <przemyslawuk@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Wednesday, November 05, 2008 10:52 PM
Subject: [amibroker] Re: "SLOW" backfill and delay with IQFeed
> Tomasz, I was trying to use AB with a minimum amount of data.
> Currently my database settings are : 1min/1100bars/32kb per symbol.
> So, 60 symbols*32kb=1.8Mb
> I don't understand why intraday scan with "wait for backfil" takes
> almost 1 hour. I understand that there must be some additional
> "negotiation" -request the symbol, wait for data....etc. but even so
> it should not take that much time. I measured my connection speed
> using "speed meter" on 2wire.com website and it shows more than 1MB/s.
>
>
> Am I right that streaming 100 symbols is equivalent to avg internet
> transfer of about 10kb/s at the most?
>
> And, Should the backfill of 100 symbols =3.2Mb be a matter of a few
> seconds with internet speed of 1Mb/s (measured)?
>
> Windows task manager shows 38% CPU (40/60 between IQ and AB) and LESS
> than 1% internet bandwidth usage -- WHY is it not using the entire
> bandwidth available?????????????????
>
> Another thing I don't understand is, why with the above numbers my
> Core2 Duo PC is nonresponsive when watching 4 charts ??????
>
> I have a separate internet connection for AB and my trading platform
> because when I run intraday scans AB can cause other applications
> running on the same connection to loose the connection. And I have the
> fastest connection the money can buy in my area.
>
> I was complaining to IQFeed, we spend an hour online running tests
> and they say that everything looks ok.
>
> I saw posts from other AB users claiming that they have 8 charts on
> the screen on a PC two generations older than mine. I was wonder how
> do they manage to trade.
> It is my 3rd PC and I always get the same problems. I am not
> complaining here about AB because it is still the best program in my
> opinion, but I have never seen anyone else using it, so I try to get
> some feedback whether I just complain about things not knowing that it
> is the way they should be.
>
> Could someone else share their experience with AB?
>
>
>
> ------------------------------------
>
> **** 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
>
> *********************************
> Yahoo! Groups Links
>
>
>
------------------------------------
**** 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
*********************************
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|