On Jan 9 Michael Haardt wrote:
> Do you vote for or against having an option to disable fsync()?
Against; I don't want Exim authors blamed for irresponsible behaviour.
Another option available to you is to LD_PRELOAD a no-op for fsync(), eg
<
http://ftp.die.net/pub/qmail-tools/libnosync.c>.
But please try the external journal trick first, and set a commit interval
as large as you like--I use a minute or two. Your I/O will scale since
then main volume is largely only reading and the journal volume will only
write if you have enough RAM.