Re: How git affects kernel.org performance

From: Linus Torvalds <torvalds@osdl.org>
Date: Jan 9, 2007, 16:23 UTC
Message-ID: <Pine.LNX.4.64.0701090821550.3661@woody.osdl.org>
In-Reply-To: <368329554.17014@ustc.edu.cn>

On Tue, 9 Jan 2007, Fengguang Wu wrote:

Show 6 quoted lines

> > 
> > The fastest and probably most important thing to add is some readahead
> > smarts to directories --- both to the htree and non-htree cases.  If
> 
> Here's is a quick hack to practice the directory readahead idea.
> Comments are welcome, it's a freshman's work :)

Well, I'd probably have done it differently, but more important is whether this actually makes a difference performance-wise. Have you benchmarked it at all?

Doing an

	echo 3 > /proc/sys/vm/drop_caches

is your friend for testing things like this, to force cold-cache behaviour..

		Linus

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.