Re: Xcode 2.1 saving lag
Re: Xcode 2.1 saving lag
- Subject: Re: Xcode 2.1 saving lag
- From: Scott Tooker <email@hidden>
- Date: Thu, 16 Jun 2005 11:38:26 -0700
In all these cases the best thing to do is sample Xcode when it is
being slow (using Sahrk, Sampler, or Spin Control) and file bugs.
Scott
On Jun 16, 2005, at 11:13 AM, Nick Nallick wrote:
Since I grew up using Microsoft Word and the like, it's become
second nature for me to press command S to save every few seconds
(instinctively). However, since upgrading to Xcode 2.1, I've
noticed a huge lag whenever I said. I even get the spinning beach
ball. Is there some new setting in Xcode that causes it to do
something wacky and compute intensive on save?
It's doing three things:
1) It's recalculating the dependency tree to mark dependent files
and targets as dirty and needing a rebuild. We know this process
is unoptimized and are working on it.
2) It's reindexing that file. This happens on a lower-priority
background thread and shouldn't take too long or be noticeable.
3) It's actually compiling the file in the background for you, in
case that's the next thing you'll be doing. Again, this happens on
a low-priority background thread. If you have a low-memory machine
this may cause swapping and result in a spin, but if you have more
RAM this is not noticeable
4) It's unfortunately doing a full text layout of the entire file.
This is only noticeable in very large files, but is an
optimization opportunity for us.
My guess is that you have a large dependency tree, and that you're
running into 1).
I see this problem when saving a file after fixing compiler
errors. For some reason when editing the files local to my project
there are markers in the vertical scroll bar of the editor window
to show where errors and warnings are, but the the files I'm
referencing from a library folder outside of my project don't
contain these markers. The files with the markers take an extra
few seconds to save, but the files without markers save normally.
Therefore I suspect the lag is due to the editor updating the
marker locations.
Regards,
Nick Nallick
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