Right now I am trying to scroll and it takes like 10 seconds (no joke!) to move... And I hear my computer loading, loading, loading...
Hmm... Louis 2008/7/20 Louis Préfontaine <[EMAIL PROTECTED]>: > Hi Tomasz, > > I thought that once I imported Metastock files the data was going into my > AB database. In fact, when I manually open AB database's folder, I see each > and every ticker. Are you sure the data is in the Metastock files at that > point? (The speed issue is *not* in Real-time, but in my database that > goes from last July till last week). > > Scrolling is *not* immediate in my AB, even for charts with only price and > MA and portfolio equity. It takes some time to lead when I scroll. > > I defragmented my hard drive, but still it is slow... > > Any idea? > > Thanks, > > Louis > > > > 2008/7/20 Tomasz Janeczko <[EMAIL PROTECTED]>: > > No, they are NOT in AB local database. QCollector stores data into >> Metastock databases and you >> are accessing external MS database. >> >> Also scrolling is *immediate* for any formula shipped with AB. >> If it is not on your end, it means that you are using >> some formula of your own writing (or downloaded from somewhere) that takes >> forever >> to execute. >> >> Faster? Use AmiBroker own IQFeed plugin, without man-in-the-middle >> (QCollector). >> Still MS database should be fast enough, if it is not - it means that your >> hard disk is badly fragmented. >> >> Best regards, >> Tomasz Janeczko >> amibroker.com >> >> ----- Original Message ----- >> *From:* Louis Préfontaine <[EMAIL PROTECTED]> >> *To:* [email protected] >> *Sent:* Sunday, July 20, 2008 4:05 PM >> *Subject:* Re: [amibroker] Speed the database!? >> >> Also, when I right-click to change the time displayed, it takes 3-4 >> seconds and lot of loading... Any way to speed this? >> >> Thanks, >> >> Louis >> >> 2008/7/16 Louis Préfontaine <[EMAIL PROTECTED]>: >> >>> Hi Tomasz, >>> >>> I am using data that has already been downloaded with QCollector. >>> Hence, I am running on a local database and what takes like 3-4 seconds is >>> scrolling through the 1-minute bars. Let's say it is Day 1 at 11:00 and I >>> want to scroll back to Day 0, I use my mouse wheel but for 3-4 seconds the >>> images does not move at all, then I hear my computer loading, then I see the >>> bars before. Is there a way to make that faster? >>> >>> Thanks, >>> >>> Louis >>> >>> 2008/7/15 Tomasz Janeczko <[EMAIL PROTECTED]>: >>> >>> Hello, >>>> >>>> No, it does NOT take 3-4 seconds to load each ticker. Loading (i.e. >>>> switching between symbols) is INSTANT. >>>> >>>> It takes 3-4 to BACKFILL. That's huge difference. >>>> >>>> Are you aware that you are on 256kbps connection. That means that your >>>> fully saturated connection is able >>>> to deliver about 25KB of data per second. Now do you have any idea how >>>> much data is one day >>>> of 1-minute data? >>>> >>>> As far as I remember you are using IQFeed. It delivers data in ASCII >>>> format. >>>> >>>> Let's say single quote line is 100 bytes. Compressed it is 50. Now >>>> there are 60 lines per minute and >>>> 480 lines per 8 hours. That's 24KB PER DAY PER SYMBOL of 1-minute data. >>>> That means >>>> that it takes 1-second FULLY SATURATED your internet connection to >>>> deliver 1-day worth of 1-minute data for one symbol. >>>> That's physical limit of your internet connection. >>>> >>>> Yes there is a way to get it faster: >>>> a) invest in better internet connection >>>> b) subscribe to data source that allows those 500 symbols to be >>>> streaming >>>> c) run scan with wait for backfill PRIOR to market open. Once you >>>> initialy scan all symbol >>>> UNCHECK "wait for backfill" and scans will fun blazing fast. >>>> >>>> Best regards, >>>> Tomasz Janeczko >>>> amibroker.com >>>> >>>> ----- Original Message ----- >>>> *From:* Louis Préfontaine <[EMAIL PROTECTED]> >>>> *To:* [email protected] >>>> *Sent:* Monday, July 14, 2008 11:02 PM >>>> *Subject:* [amibroker] Speed the database!? >>>> >>>> Hi, >>>> >>>> I have my 1-minute database setted with all my tickers and everything, >>>> but damn it it is so slow! It takes like 3-4 seconds to load each >>>> ticker... Is there a way to make it run faster, considering I don't need >>>> all the data when exploring? >>>> >>>> Thanks, >>>> >>>> Louis >>>> >>>> >>> >> >> > >
