Mr Siddharth I had similar problems too. In the database settings, I had set 45000 bars. Once the database crossed the 45000 bars, system became very slow. After I deleted some of the data, it became alright. I do not know if the data volume is the exact cause. Just I thought of sharing this info with you.
perumal -- In [email protected], "sidhartha70" <[EMAIL PROTECTED]> wrote: > > Thanks Tomasz, but I'm as sure as I can be it's not my formula's... > I have checked them before, but I checked again on live charts as you > suggested... my slowest formula is about 0.05sec and that uses about > three plotforeign() statements. > > I have found that symbol linking of charts seems to cause them to slow > down... Would that be correct...? And when I say 'slow down' I don't > mean chart re-draws... more general operation, like scrolling on > charts, cursor clicks, menu pop up & right click menus etc... > > > > --- In [email protected], "Tomasz Janeczko" <groups@> wrote: > > > > Hello, > > > > Chart refresh of ZERO means to refresh as often as CPU allows > > so it inherently leads to higher load. That is not degradation > however but > > rather speed up as chart are refreshed more often. > > > > However if on single core you are getting more than 70% CPU load average > > it may mean that your formulas are probably not fine-tuned for > real-time performance. > > > > EVERY formula used for real time trading should execute below 0.1 > second. > > > > You should display the timing of your chart > > (Tools->Preferences->Miscellaneous "Display chart timing). > > If your formula execution takes ANYTHING more than 0.1 sec to execute > > it means that the formula you are using is written wrong > > (inefficiently). > > Formulas shipped with AB execute in less than 0.01 sec. > > > > Run > > AFL Editor, Tools->Check and profile to find bottleneck of your > formulas. > > > > > > Best regards, > > Tomasz Janeczko > > amibroker.com > > ----- Original Message ----- > > From: "sidhartha70" <sidhartha70@> > > To: <[email protected]> > > Sent: Tuesday, June 10, 2008 1:18 AM > > Subject: [amibroker] Re: Tracking down performance degredation in AB > > > > > > > Already using 5.10 Tomasz. > > > > > > --- In [email protected], "Tomasz Janeczko" <groups@> wrote: > > >> > > >> Which version are you using? > > >> You should upgrade to 5.10 for best results. > > >> > > >> Best regards, > > >> Tomasz Janeczko > > >> amibroker.com > > >> ----- Original Message ----- > > >> From: "sidhartha70" <sidhartha70@> > > >> To: <[email protected]> > > >> Sent: Monday, June 09, 2008 9:29 PM > > >> Subject: [amibroker] Re: Tracking down performance degredation in AB > > >> > > >> > > >> > Actually, I think I just tracked it down... seems obvious now. I > > >> > recently changed the 'Intraday" refresh interval in Preferences > from 3 > > >> > secs to zero... > > >> > > > >> > However, I only have about 4 symbols feeding live from IQ > Feed... and > > >> > I'm running a beast of a PC... and the fasted internet connection > > >> > available in the UK... the net effect on my processor useage seems > > >> > negligable... so I'm kinda surprised that it would degrade > performance > > >> > so much... > > >> > > > >> > Anyone else experienced this...? Should I be suprised or maybe > there > > >> > is something else amiss...?? > > >> > > > >> > Many Thanks > > >> > > > >> > --- In [email protected], "sidhartha70" <sidhartha70@> > wrote: > > >> >> > > >> >> HI All, > > >> >> > > >> >> Been using AB for a couple of months now... I seem to have > noticed a > > >> >> performance degredation on the AB's use the past couple of days. I > > >> >> can't see that I've added antyhing in particular that would cause > > > this. > > >> >> > > >> >> Any ideas towards tracking down performance degredation in AB...? > > >> >> > > >> >> Thanks > > >> >> > > >> > > > >> > > > >> > > > >> > ------------------------------------ > > >> > > > >> > 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 NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > > >> > http://www.amibroker.com/devlog/ > > >> > > > >> > For other support material please check also: > > >> > http://www.amibroker.com/support.html > > >> > Yahoo! Groups Links > > >> > > > >> > > > >> > > > >> > > > > > > > > > > > > ------------------------------------ > > > > > > 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 NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > > > http://www.amibroker.com/devlog/ > > > > > > For other support material please check also: > > > http://www.amibroker.com/support.html > > > Yahoo! Groups Links > > > > > > > > > > > >
