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Re: Performance regression in CVS HEAD's *compilation* buffer
From: |
Stefan Monnier |
Subject: |
Re: Performance regression in CVS HEAD's *compilation* buffer |
Date: |
Sat, 29 Jan 2011 00:28:04 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
> I updated my CVS tree to HEAD today (2009-02-03, around noon PST),
> compiled it, and started using it. My previous sync had been around
> 2008-12-01. During that interval, the performance of inserting long
> lines into the *compilation* buffer has dropped by an order of
> magnitude.
I've only recently started taking a look at compile.el and haven't had
a chance to investigate this problem, but I just tried:
M-x compile RET echo C-u 6400 x RET
and it finished instantly. Maybe this is because the problem was fixed
a while ago. But I also just installed a change which should
significantly help such cases by only processing lines when they're
complete, which avoids an N^2 behavior.
Stefan
- Re: Performance regression in CVS HEAD's *compilation* buffer,
Stefan Monnier <=