Re: aio #2: why aren't we doing async writes?

On Wed, Jun 11, 2008, Henrik Nordstrom wrote:
> On ons, 2008-06-11 at 20:01 +0800, Adrian Chadd wrote:
>
> > What I need to do is get this Sun box actually running Solaris and try to
> > get dtrace to tell me what time is spent in the main thread blocking on
> > disk writes.
>
> On Solaris you defenitely want async writes and closes, as Solaris UFS
> by default uses sync metadata writes, which means close (and unlink)
> blocks...

I wonder what FreeBSD does, and whether this accounts for the performance
difference between aufs and diskd on that platform. Hm!

Adrian

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