[PATCH/RFC] readahead applet

Paul Fox pgf at brightstareng.com
Mon Aug 21 17:00:29 UTC 2006


 > 
 > With our new "readahead" command, everything is done in one system call. 
 > So, almost everything is done in kernel mode, possibly in an optimized 
 > way between the filesystem and page cache. And of course, no buffer copy 
 > from kernel-space to user-space is done!
 > 
 > To prove this I ran "time readahead" and "time cat" on 2 identical files.

what's the result if you compare with "time dd bs=<some large number>" ?

paul
=---------------------
 paul fox, pgf at brightstareng.com



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