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" <[email protected]> To: <[email protected]> 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 [email protected], "Tomasz Janeczko" <gro...@...> wrote: >> >> Uncheck "wait for backfill". >> >> Best regards, >> Tomasz Janeczko >> amibroker.com >> ----- Original Message ----- >> From: "sidhartha70" <sidharth...@...> >> To: <[email protected]> >> 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 > > >
