Re: [Qemu-block] [Qemu-devel] [PATCH v2 0/5] block: Introduce qemu-img bench

[Stefan Hajnoczi]

On Mon, Jun 06, 2016 at 02:45:57PM +0200, Kevin Wolf wrote:
> After merging Den's qcow2 patch to avoid duplicated flushes, I thought I would
> be nice to reproduce the problem and I remembered 'qemu-img bench', which I 
> had
> posted before as part of more than one RFC series, but which never made it to
> master somehow. So here is a rebased and cleaned up version of it, just by
> itself, so that it hopefully can be merged finally.
> 
> Of course, I failed to actually reproduce the problem on my laptop. Who knows,
> something on my system might be more intelligent about useless flushes, or
> maybe I just misunderstood what the problematic scenario looks like at the
> block level. Doesn't make the tool less useful, though, and I already did the
> rebasing.
> 
> v2:
> - Added --pattern=... option for writes [Den]
> - Added --no-drain option for write+flush tests [Den]
> 
> Kevin Wolf (5):
>   qemu-img bench
>   qemu-img bench: Sequential writes
>   qemu-img bench: Make start offset configurable
>   qemu-img bench: Implement -S (step size)
>   qemu-img bench: Add --flush-interval
> 
>  qemu-img-cmds.hx |   6 +
>  qemu-img.c       | 329 
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  qemu-img.texi    |  24 ++++
>  3 files changed, 359 insertions(+)
> 
> -- 
> 1.8.3.1
> 
> 

Reviewed-by: Stefan Hajnoczi <address@hidden>

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