Re: [ jEdit-devel ] Super slow buffer with big files!

[Corey T. <cor...@ge...>]

Hi,

Soft wrap is off. More accurate syntax highlighting is off, and I have a
bunch of plug-ins but I'm not sure they are the problem since my linux jEdit
has the same problem and has only a few plugins installed.

I think you could reproduce this problem rather easily. I think the problem
is what Matthew mentioned in an e-mail recently:

"More specifically that I can tell, the problem only exists for me when
the text of lines extend far into the right of the buffer. If I modify
the same text file, and return the lines of text so that the text
doesn't extend so far into the right of the buffer, jedit seems to be
more responsive." --Matthew Hailstone

I think Matthew is right. If you have a lot of lines that extend very far to
the right, scrolling becomes very slow, and borders on unresponsive. Mind
you my machine is fast and has plenty of memory, so this shouldn't be a
problem. If anyone wants to see what I mean, paste a whole bunch of lines
about 4-8 KBs in size one after another then try to scroll. Make sure line
wraps are off, otherwise scrolling will be normally fast. It's weird when I
have line wrap on it scrolls fast, but when I have these super long lines
that stretch far to the right, scrolling becomes very slow, but only in the
sections that stretch very far to the right.

This is an easy problem to reproduce, and if I wasn't clear just e-mail me
and I'll explain in more detail.

Once again, I'd be glad to try to come up with a solution, but I'm sure
there are some developers on this list who can come up with a fix faster
than me since I have no experience with the jEdit codebase. Thanks,

Corey

----- Original Message -----
From: "Slava Pestov" <sl...@je...>
To: <jed...@li...>
Sent: Monday, September 16, 2002 2:35 PM
Subject: Re: [ jEdit-devel ] Super slow buffer with big files!


> Hi,
>
> I would check a few settings:
>
> - Is soft wrap on?
> - Is "more accurate syntax highlighting" on?
> - What plugins do you have?
>
> To test I've opened 100Mb+ files in jEdit, which was sort of slow, but
> 2Mb files should not have any slowdowns.
>
> Slava
>
> On Fri, 2002-09-13 at 20:31, Corey Taylor wrote:
> > Hi I am having a problem with jEdit that I'd like to fix. Whenever I
load a big text file, say a 2MB SQL file, the scrolling becomes very slow!
> >
> > Is this a problem with jEdit, or is this a limitation of the JVM. I
imagine increasing buffer sizes could speed scrolling up with large ammounts
of text. Has anyone found a solution to working with large ammounts of text
quickly in jEdit? Oh yeah, and I did turn of all the options that slow stuff
down like anti-aliasing, etc...
> >
> > If this is a problem with the jEdit code, perhaps I can lend my Java
expertise in coming up with a fix? Or is there a simpler way to speed things
up?
> >
> > Corey
>
>
>
>
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