Re: [exim-dev] Old topic again: Option to avoid fsync()?

* Matt Bernstein:

> I try to avoid r/w contention by using full data journalling with external
> journals, which are on physically different (and hopefully faster) HDDs. I
> believe this is good practice for synchronous I/O like mail and NFS.

If you want to throw money at the problem, a RAID controller with a
battery-backed cache is a good option as well.

On the other hand, with a lot drives in their default configuration,
fsync() can't reliably do what it claims to anyway. 8-/