Re: Kernel VS application file caching

[Sad Clouds <cryintothebluesky%googlemail.com@localhost>]

On Friday 22 January 2010 12:56:47 Sad Clouds wrote:
> On Friday 22 January 2010 12:37:53 Martin Husemann wrote:
> > On Fri, Jan 22, 2010 at 12:29:31PM +0000, Sad Clouds wrote:
> > > So far the closet that comes to it is calling open() with O_DIRECT
> > > flag.
> >
> > Have you looked at bozohttpd's mmap_and_write_part() function?
> > You can find it in src/libexec/httpd/bozohttpd.c.
> >
> > If not using https, this is quite efficient for a service sending raw
> > file content out to a socket.
> >
> > Martin
> 
> Hmm.. I can't seem to find that function. Maybe it has been removed or
> renamed?
> 
> p3smp$ pwd
> /opt/src/libexec/httpd
> 
> p3smp$ find . -type f | while read i
> 
> > do
> > grep 'write_part' $i && echo "^^ $i"
> > done
> 
> p3smp$
> 

Oh forgot to mention, my NetBSD sources are updated via

cvs update -rnetbsd-5 src

I'll check out the source for -current. Maybe it's there.