Re: [CentOS] Samba "use sendfile" configuration option set do disabled as default - why?

happymaster23 wrote:

This is not problem of disks, this is problem of Samba (operating systems in network are Windows XP and Windows 7 only, so this should not be problem caused by Windows).

I am asking because of risks and disadvantages. This is same as oplocks - it may be performance tweak, but it is potentially dangerous (data corruption).

How does sendfile() mesh with SMB signed packets? I'd think you would have to copy the data for that. Sendfile should just be saving a memory/buffer copy or two anyway. That seems like it should be a barely measurable amount of time unless your server is heavily loaded.