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Hi Tomasz,
Do the file safe settings apply to all times of the day or just
trading hours? I am on a wireless broadband. The other day I set AQ
as I defined below up with number of simultaneous downloads = 10,
started AQ at 11 PM and downloaded 20 years of data for 9000 stocks
and it worked fine? Under what conditions does Yahoo invoke requests
as denial-of-service attacks and terminate the session? What error
does AQ display when this occurs? Under what conditions is it safe
to use more than a setting of 1? And man does it slow things down
when 1 is set.
Thanks,
Barry
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
<amibroker@xxxx> wrote:
>
> Hello,
>
> "Fail safe" settings are provided there in AQ for those having
problems.
> Specifically
> number of simultaneous downloads = 10
>
> was giving problems with Yahoo on DSL connection because Yahoo
> considered as many simultaneous requests as denial-of-service
attack.
>
> That's why fail-safe settings are:
> number of simultaneous downloads = 1 (one)
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "Barry Scarborough" <razzbarry@xxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Thursday, October 27, 2005 4:00 PM
> Subject: [amibroker] Re: data
>
>
> > Yea that is weird. Computer speed is not your problem unless you
are
> > doing lots on the internet or other intensive disk ops at the
same
> > time. I am running an Athlon XP2000 with 500M of dual channel
memory
> > and it still slows my system way down when it is downloading and
> > importing data to AB. I often see that AQ is running 20 threads,
> > that is equivalent to having 20 Internet data transfer apps
running
> > at once. I think they are buffering this and bursting it into
AB. If
> > that is what they are doing it can take considerable processor
and
> > memory cycles during the burst phase. If I try to open Outlook
> > Express it takes forever to come up. Ditto with any Internet app.
> >
> > I would think it would auto import or it wouldn't. You do have
the
> > Automatic import box checked in AmiQuote don't you? If so when
it is
> > importing it does so in spurts and you can see this on the
bottom of
> > the AmiBroker window if the AQ window is smaller than the AB
window.
> >
> > When do you download from Yahoo? I find that before 6:30 EST I
get
> > incorrect results. Maybe the data base is not updated by then. I
> > usually wait until then to download. It may look like it is not
> > working but in reality it is just downloading yesterday's data
as
> > current. If you see that AQ imported everything and find the
stock
> > data is one day off you downloaded too early in the day.
> >
> > Also if you are downloading historical data every day instead of
> > current it seems that Yahoo will kick you off at times. There
are no
> > AQ errors but if you scan the list you will see that from a
point
> > nothing below that is downloaded. If you do this earlier in the
day
> > Yahoo WILL kick you off during trading hours. I am not sure what
> > time they stop doing this. If you are downloading historical
each
> > day change to current rather than historical. It is much faster.
> >
> > What are your AQ settings? Mine are set to:
> > Overwrite existing files for historical, daily and intraday
> > Pre-defined settings = user defined
> > number of symbols = 200
> > number of simultaneous downloads = 10
> > number of automatic retries = 2
> > delay between retries = 1
> > initial delay between requests = 5
> > Timeout, connect = 10 and receive = 20
> >
> > These seem to work well on broadband.
> >
> > Barry
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "Tim" <raven4ns@xxxx> wrote:
> >>
> >> Hi Barry,
> >> I was not experiencing any problems with Yahoo until the
latest
> >> upgrades. I am on a cable connection which is very fast and I
have
> > 1
> >> gig on memory onboard so shud be lots for anything I do. With
the
> >> latest upgrades I had to download 4 times before it took and
then
> > when
> >> I tried to update yesterday it didn't update.
> >> Now what I know about computers you could put on the head of a
> > pin
> >> with room left over. However, it is strange why it works 1 time
> > and not
> >> another. Yahoo has been a reasonbly good data provider for my
EOD
> > needs
> >> so am not sure why now. This has been the only time this has
> > happened
> >> and it's coincident with the upgrades. One thing I did notice
is
> > that
> >> before when I switched databases the last database I updated
was
> > always
> >> saved automatically. I knew this by the box that popped up
showing
> > it
> >> being saved, that no longer happens. I just thought it was
> > something I
> >> was forgetting to do but maybe not. Take care Barry.
> >>
> >> Regards,
> >>
> >> Tim
> >>
> >
> >
> >
> >
> >
> >
> >
> > Please note that this group is for discussion between users only.
> >
> > To get support from AmiBroker please send an e-mail directly to
> > SUPPORT {at} amibroker.com
> >
> > For other support material please check also:
> > http://www.amibroker.com/support.html
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
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