Re: dumb transports not being welcomed..

Hi,

On Tue, 13 Sep 2005, Linus Torvalds wrote:

Also, I really do think that the dumb transports are oversold, and 
git-daemon is undersold.

My tests confirm that a single git-pull via git-daemon brings a small 
machine to its knees. Which means that multiple git-pull's bring a nice 
big machine like kernel.org to its knees.

IMHO the culprit is git-rev-list, which takes ages and ages for big 
repositories (beware: this could be my Darwin client which might be 
incapable to stop the rev enumeration in time; but if that can be done 
unintentionally, this can be intentionally, too!).

Did anybody think about using the information which helps the dumb 
transports for intelligent transports, too? (A sort of cache for 
git-rev-list would do wonders...) This could at least help the CPU load on 
the server.

(In retrospect it might have been a mistake to make the call to 
git-update-server-info optional: maybe an environment variable should be 
set to _inhibit_ the behaviour for those which absolutely cannot live with 
the performance hit.)

Ciao,
Dscho