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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@xxxxxxxxxxxx>
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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