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TJ is. Why?
--- In amibroker@xxxxxxxxxxxxxxx, "gsmservplus" <domantas.rudys@xxx>
wrote:
>
> who is developing IQFeeD plugin for AB?
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@>
> wrote:
> >
> > You can also backfill after market close. And no, it is not AB
> fault or bug.
> > AmiBroker just displays what it receives from data source.
> > Data quality is solely dependent on data vendor.
> >
> > Best regards,
> > Tomasz Janeczko
> > amibroker.com
> > ----- Original Message -----
> > From: "gsmservplus" <domantas.rudys@>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Sunday, December 07, 2008 3:14 PM
> > Subject: [amibroker] Re: delays on iqfeed?
> >
> >
> > >
> > > tomasz,
> > >
> > > not everybody can do backfill before market open.i switch on my
> pc at
> > > 12 ET and i`ve got 200 ticker in my database. so, is it only
> chance
> > > to solve this problem to do like you said?
> > > and one more question.is it AB fault? because IQfeed cust serv
> said
> > > is everything alright from they side.
> > > any chance to fix it in the future if its AB bug?because it is
> > > nightmare, i f***d my database last thursday doing backfill like
> you
> > > said through AA explore and wait for backfill ticked,but at 12
> > > ET.half of my database was with a wrong data.and even when i try
> to
> > > backfill it today wrong data stays.only "force to backfill" could
> > > help me.lost half a day to fix my database.
> > > thanks for your time
> > >
> > >
> > >
> > >
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@>
> > > wrote:
> > >>
> > >> Hello,
> > >>
> > >> It was discussed in the past. Correct procedure with IQFeed is
> > >> to start before market open, run single scan with "wait for
> > > backfill"
> > >> turned on. Do this BEFORE market open so IQFeed works faster.
> > >>
> > >> Once all symbols are backfilled and up-to-date you can turn this
> > >> check box off and all symbols would stream and kept up-to-date.
> > >>
> > >> Please keep in mind that depending on symbols you use there can
> > >> be few hundreds of ticks per second per symbol to be processed,
> > >> so if you are tracking say 500 symbols, on high-activity periods
> > >> (such as market open) you can receive as many as 50000 updates
> per
> > > second.
> > >> Each update is about 100 bytes, so to transfer such amount of
> data
> > >> you need 50000*100 BYTES per second and that is about 50 Mbps,
> > >> so 3Mbps internet connection is not enough to keep up with such
> a
> > > stream.
> > >> (remember that connection speeds are expressed in BITS per
> second,
> > >> not bytes, and it takes 8 BITS to transfer one byte).
> > >>
> > >> Best regards,
> > >> Tomasz Janeczko
> > >> amibroker.com
> > >> ----- Original Message -----
> > >> From: "gsmservplus" <domantas.rudys@>
> > >> To: <amibroker@xxxxxxxxxxxxxxx>
> > >> Sent: Saturday, December 06, 2008 12:09 AM
> > >> Subject: [amibroker] Re: delays on iqfeed?
> > >>
> > >>
> > >> > could we expect any comments about this problem from Tomazs
> > > Janeczko?
> > >> > thanks
> > >> >
> > >> > --- In amibroker@xxxxxxxxxxxxxxx, "claudecaruana"
> > > <claudecaruana@>
> > >> > wrote:
> > >> >>
> > >> >> Hi,
> > >> >>
> > >> >> I too experienced the same 2 problems.
> > >> >>
> > >> >> As regards to the backfill problem, I resolved it by
> backfilling
> > >> >> through the AA window first, as opposed to manually pacing
> > > through
> > >> > the
> > >> >> symbols: I run a simple exploration with "wait for backfill"
> > >> > switched
> > >> >> on, on all quotations. Once this is done all quotes are
> updated
> > > and
> > >> >> streaming.
> > >> >>
> > >> >> I have not yet found a solution for the IQFeed delay. All I
> can
> > > say
> > >> > is
> > >> >> that it appears when there are a considerable number of
> streaming
> > >> >> symbols - if I have 5-10 symbols only which are streaming
> then
> > > the
> > >> >> data is fine, but if I run the backfill on all my database
> > > (approx
> > >> > 450
> > >> >> symbols) then I am also experiencing a huge delay.
> > >> >>
> > >> >> I do not think this delay is due to the connection speed - I
> am
> > >> >> currently putting it down to the processing speed of my PC
> and am
> > >> >> looking to upgrade, but I am not sure this will resolve the
> > > problem.
> > >> >>
> > >> >> I currently work around this by only subscribing to the
> symbols
> > > I
> > >> > will
> > >> >> be using for the day (by running the above routine I
> mentioned
> > > only
> > >> > on
> > >> >> a watchlist), then I update all the other symbols at the end
> of
> > > the
> > >> >> day in order to stay updated from a historical perspective.
> > >> >>
> > >> >> hope this helps. Let me know if you find out something else
> > > about
> > >> > the
> > >> >> IQFeed delay :)
> > >> >>
> > >> >> claude
> > >> >>
> > >> >>
> > >> >> --- In amibroker@xxxxxxxxxxxxxxx, "gsmservplus"
> <domantas.rudys@>
> > >> >> wrote:
> > >> >> >
> > >> >> > hello,
> > >> >> >
> > >> >> > AB 5.20,windows vista,iqfeed client 4.4.0.3,virgin uk
> > > broadband
> > >> >> > internet provider with up to 3 Mb speed.
> > >> >> >
> > >> >> > my problem is: when i load my iqfeed data base after some
> time
> > > i
> > >> > get
> > >> >> > time delays on my stocks, forex ant futures RT data compare
> > > with
> > >> > my
> > >> >> > PC time.every time delays are different from couple secs to
> > > over
> > >> > the
> > >> >> > minute.as longer i`ve got AB and IQfeed opened as bigger
> delay
> > >> > is.but
> > >> >> > it happens not always,but very often.IQfeed said is
> everything
> > >> >> > alright with my data and could be problem with software or
> ISP.
> > >> >> > p.s. time difference between IB TWS and my PC time is only
> > > couple
> > >> > (1-3
> > >> >> > sec.)seconds and never changes.
> > >> >> >
> > >> >> >
> > >> >> > another problem is: when i start AB and start go through my
> > >> > tickers
> > >> >> > to backfill current day data(as i understand it can
> backfill
> > > only
> > >> > 5
> > >> >> > tickers at the time, so every time when i start AB i`ve got
> to
> > > go
> > >> >> > through all my database,i have around 200 tickers database)
> > >> > sometimes
> > >> >> > some tiskers gives wrong data, i mean, only one very long
> > > candle
> > >> > for
> > >> >> > current with huge volume in hourly chart.after i
> start "force
> > >> >> > backfill"for those wrong ticker it gives right data
> then.and
> > >> > again it
> > >> >> > happens not always, but very often. and IQ feed
> cust.service
> > >> > told me
> > >> >> > could be problem with AB.
> > >> >> >
> > >> >> > any ideas about those two problems? thanks
> > >> >> >
> > >> >>
> > >> >
> > >> >
> > >> >
> > >> > ------------------------------------
> > >> >
> > >> > **** 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
> > >
> > >
> > >
> >
>
------------------------------------
**** 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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