Subject: Re: Why my life is sucking.
To: Brett Lymn <>
From: Manuel Bouyer <>
List: current-users
Date: 01/16/2001 22:02:24
On Tue, Jan 16, 2001 at 02:13:23PM +1030, Brett Lymn wrote:
> According to Herb Peyerl:
> >
> >I fail to see how that would cause only mkdir to take 17 seconds but everything
> >else to operate at full-speed.
> >
> Doesn't the mkdir play with ufs metadata which, IIRC, needs to be
> written _synchronously_ to disk which means that if your disk
> subsystem is not fast you will lose on synchronous operations whereas
> normal operations are using the buffer cache which _may_ mask a slow
> disk subsystem somewhat (that was what it is for ....)

No, these 3000+ I/O for a simple mkdir is not normal.

Manuel Bouyer <>