Re: Performance issue when fontifing in compile-mode.

[Oleksandr Gavenko]

On 18.01.2011 17:23, Oleksandr Gavenko wrote:
> I use in log file:
>
> -*- mode: compilation-minor; mode: auto-revert-tail; default-directory:
> "~/devel" -*-
>
> This allow easy and fast go to place where logger function make output
> (in GNU format).
>
> But logs with >2000 lines take 2-20 sec on parsing after revert.

To test you can use shell script:

echo "-*- mode: compilation-minor -*-" >test.txt
seq 1 10000 | while read line; do echo "src/file.c:345: dummy text" 
>>test.txt; done

and open test.txt file. It take 20 sec to be opened!

Same with

-*- mode: grep -*-

It is too long for parsing simple 270 KiB of text!!!!!

Which things have affect  on performance?

regex parsing or putting properties to buffer text?

Is that true: c-mode highlights only part on file not all?