Eric thank you I would have never considered that as an issue. I tried out your code and saw the problem. You saved me going down a rabbit hole.
Many Thanks On Thu, Apr 2, 2015 at 5:33 PM, Eric Wong <e...@80x24.org> wrote: > James Rouzier <rouz...@gmail.com> wrote: > > Hey Guys, > > > > I am working on a proof of concept of a simple key value store service > > using lmdb as the back end. > > I am using sendfile to avoid an extra copy. > > Be careful if you're overwriting any data in LMDB. > > zero-copy sendfile means any data queued up in the kernel will be > subject to modifications as the underlying file is updated, so your > client may se data it was not intended to see. > > I wanted to do the same thing as you last year but ended up writing a > patch to the sendfile manpage instead: > > > https://git.kernel.org/cgit/docs/man-pages/man-pages.git/patch?id=7b6a3299776b5c1c4f169a591434a855d50c68b4 >
