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Report From: Delphi-BCB/IDE/Code Browsing [ Add a report in this area ]

Report #: 83153

Status: Reported

Scrolling / Editing source code is painfully slow in IDE

Project: Delphi

Build #: 7600

Version: 14.0

Submitted By: Matt Stevens

Report Type: Minor failure / Design problem

Date Reported: 3/18/2010 10:57:04 PM

Severity: Serious / Highly visible problem

Last Updated: 3/22/2010 1:01:23 PM

Platform: All versions

Internal Tracking #:

Resolution: None

Resolved in Build: : None

Duplicate of: None

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Description

I have loaded up a fresh WIN7 system with Delphi 2010, added some DevExpress & Steema components.  Transfered over my project source code from my WinXP/D2006 dev system.

My project size is about 300,000 lines of code that gets compiled in a little over 1 sec, so compilation/hardware speed is not a issue.  The project contains approx 160 or so source code files  My dev computer is a HP Z400 w/s with an Intel Xeon W3270 cpu with 8 GB DDR3 runniong on WIN7-64 Pro.

When I do any sort of editing on my project, the Delphi 2010 IDE responds extremely slowly, and may take many seconds to scroll thru the same source code that the BDS 2006 just flys through?  Normally I can watch the IDE repaint each line, line by line before it suddenly updates, instead of a smooth text scrolling action.

I did a scrolling test on some of my larger .pas files with other text editors like Boxer and notepad, both seemed to scroll on demand, so I don't think its my sytem setup?

  I downloaded and applied the IDE 3.1 fix, but no improvment.  Turned of the Kaspersky Antivirus, but again no speed improvement.

Is there something in the Options that is set incorrectly causing this slow IDE editing issue?

Steps to Reproduce:

place cursor in text editing area, use scroll wheel on mouse to scroll down thru code, scrolling becomes progressively slower and lines slowly appear and repaint at top of editing area

Workarounds

use scroll bar on form side?

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