Re: Poor interactive performance with I/O loads with fsync()ing

[Ben Gamari]

On Sun, 11 Apr 2010 18:03:00 +0300, Avi Kivity <avi@xxxxxxxxxx> wrote:
> On 04/09/2010 05:56 PM, Ben Gamari wrote:
> > On Mon, 29 Mar 2010 00:08:58 +0200, Andi Kleen<andi@xxxxxxxxxxxxxx>  wrote:
> >    
> >> Ben Gamari<bgamari.foss@xxxxxxxxx>  writes:
> >> ext4/XFS/JFS/btrfs should be better in this regard
> >>
> >>      
> > I am using btrfs, so yes, I was expecting things to be better. Unfortunately,
> > the improvement seems to be non-existent under high IO/fsync load.
> >
> 
> btrfs is known to perform poorly under fsync.
> 
Has the reason for this been identified? Judging from the nature of metadata
loads, it would seem that it should be substantially easier to implement
fsync() efficiently.

- Ben

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/