Vitavonni

Sat, 11 Dec 2004

Readahead improved

I tried for a while to find "readahead" listings for Debian or Ubuntu. If you have some, please send me an email where to get them.

I've also written a small app to do better readahead. Current readahead scripts I've seen (from gentoo) use cat to read a file and feed the information into readahead via command line.

I have modified the original "readahead" (apparently from kernel sources) to be able of reading file listings: readahead-list.c.

The file is mmapped, then scanned for newlines. Lines with more than 1024 chars are ignored, but I don't need an alloc this way, which I like.

I'd like to build this with diet libc, but it's lacking the "readahead" function. Maybe the next version will use ioctl or whatever to do this...

Oh, and I have not yet tested it... ;-)

[category: /en/linux | Permalink]
Menu
[planet.debian]
[planet.xmlhack]
[planet SELinux]
[munichblogs]
[email]
[RSS 2 feed]
[English RSS 2]
Categories
< December 2004 >
SuMoTuWeThFrSa
    1 2 3 4
5 6 7 8 91011
12131415161718
19202122232425
262728293031 
Archives
2010-Feb
2010-Jan
2009-Dec
2009-Nov
2009-Oct
2009-Sep
2009-Aug
2009-Jul
2009-Jun
2009-May
2009-Apr
2009-Mar
2009-Feb
2009-Jan
2008-Dec
2008-Nov
2008-Oct
2008-Sep
2008-Aug
2008-Jul
2008-May
2008-Apr
2008-Mar
2008-Feb
2008-Jan
2007-Dec
2007-Nov
2007-Oct
2007-Sep
2007-Aug
2007-Jul
2007-Jun
2007-May
2007-Apr
2007-Mar
2007-Feb
2007-Jan
2006-Dec
2006-Nov
2006-Oct
2006-Sep
2006-Aug
2006-Jul
2006-Jun
2006-May
2006-Apr
2006-Mar
2006-Feb
2006-Jan
2005-Dec
2005-Nov
2005-Oct
2005-Sep
2005-Aug
2005-Jul
2005-Jun
2005-May
2005-Apr
2005-Mar
2005-Feb
2005-Jan
2004-Dec
2004-Nov
2004-Oct
2004-Sep
2004-Aug
2004-Jul
Other links:
Swing and the City - Lindy Hop in Munich