Christopher Kings-Lynne <[EMAIL PROTECTED]> writes: > FreeBSD 4.9 was released today. In the release notes was: > > 2.2.6 File Systems > > A new DIRECTIO kernel option enables support for read operations that > bypass the buffer cache and put data directly into a userland > buffer. This feature requires that the O_DIRECT flag is set on the > file descriptor and that both the offset and length for the read > operation are multiples of the physical media sector size. > > Is that of any use?
Linux and Solaris have had this for a while. I'm pretty sure it's been discussed before--search the archives. I think the consensus was that it might be useful for WAL writes, but would be a fair amount of work and would introduce portability issues... -Doug ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
