|
PureBytes Links
Trading Reference Links
|
You don't provide any formula or any details to help you,
but you should try
Buy = 0; Sell = 0;
scan. It will show you "data access" only speed. It is *BASE* time
below which you can go down because the data source is limiting you.
On my eSignal intraday database that has 200000+ bars per symbol
scanning 124 symbols with such basic formula takes 6 seconds
(all symbols streaming and backfilled already)
Any time above that base time is caused by the formula you wrote.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "sidhartha70" <sidhartha70@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Tuesday, September 01, 2009 11:39 PM
Subject: [amibroker] Re: Scan times
> TJ,
>
> doesn't seem to help... I'm running it now with 'wait for backfill' unchecked. Same huge wait time.
>
> Scan's are like black magic I find... the time they take seems to bear no resemblance to the code behind them... worse than that,
> I have seen huge variations in the time taken to run exactly the same scan across the same number of bars & same symbol list.
>
> Often they seem to jam up or have a 'mini hang'.
>
> I'm at a loss. Any ideas...? 14 mins can't be right. Anything more than a couple of mins can't be right surely...? Even that
> sounds a lot.
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:
>>
>> Uncheck "wait for backfill".
>>
>> Best regards,
>> Tomasz Janeczko
>> amibroker.com
>> ----- Original Message -----
>> From: "sidhartha70" <sidhartha70@xxx>
>> To: <amibroker@xxxxxxxxxxxxxxx>
>> Sent: Tuesday, September 01, 2009 9:54 PM
>> Subject: [amibroker] Scan times
>>
>>
>> > I'm confused.
>> > I have a scan that I call every 5 mins (or hope to). This scan is used to set up a series of static arrays that I use elsewhere
>> > in
>> > my code.
>> >
>> > The scan code is 30 lines long. A 'check' of the code says it takes 0.035 secs to run.
>> >
>> > I'm running the code over a defined filter which is a watch list of symbols. It runs across 24 symbols.
>> >
>> > My DB has 100,000 bars in it.
>> >
>> > Even with everything backfilled, I have seen this scan take 14 mins to run. That can't be right can it...??
>> >
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > **** IMPORTANT PLEASE READ ****
>> > This group is for the discussion between users only.
>> > This is *NOT* technical support channel.
>> >
>> > TO GET TECHNICAL SUPPORT send an e-mail directly to
>> > SUPPORT {at} amibroker.com
>> >
>> > TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
>> > http://www.amibroker.com/feedback/
>> > (submissions sent via other channels won't be considered)
>> >
>> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
>> > http://www.amibroker.com/devlog/
>> >
>> > Yahoo! Groups Links
>> >
>> >
>> >
>>
>
>
>
>
> ------------------------------------
>
> **** IMPORTANT PLEASE READ ****
> This group is for the discussion between users only.
> This is *NOT* technical support channel.
>
> TO GET TECHNICAL SUPPORT send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
> http://www.amibroker.com/feedback/
> (submissions sent via other channels won't be considered)
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> Yahoo! Groups Links
>
>
>
------------------------------------
**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
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/
|