Re: Change set based shallow clone

From: Paul Mackerras <paulus@samba.org>
Date: Sep 10, 2006, 22:41 UTC
Message-ID: <17668.38032.20688.991295@cargo.ozlabs.ibm.com>
In-Reply-To: <Pine.LNX.4.64.0609101254590.27779@g5.osdl.org>

Linus Torvalds writes:

> So we may do a fork/exit in a millisecond, but on the other hand, we can 
> generally open a file in a microsecond. So we're definitely talking about 
> several orders of magnitude difference..

Unless the file isn't in memory, in which case it's probably around a millisecond or more...

Do you think there is any way to speed up the cold-cache case for git-ls-remote and git-rev-parse with thousands of heads and tags?

Paul.

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