Re: [virtio] [OASIS Issue Tracker] (VIRTIO-144) VIRTIO_BLK_F_CONFIG_WCE removed from block devices spec

["Michael S. Tsirkin" <mst@redhat.com>]

On Wed, Jul 01, 2015 at 10:40:21PM +0000, OASIS Issues Tracker wrote:
> Paolo Bonzini created VIRTIO-144:
> ------------------------------------
> 
>              Summary: VIRTIO_BLK_F_CONFIG_WCE removed from block devices spec
>                  Key: VIRTIO-144
>                  URL: https://issues.oasis-open.org/browse/VIRTIO-144
>              Project: OASIS Virtual I/O Device (VIRTIO) TC
>           Issue Type: Bug
>     Affects Versions: virtio 1.0 cs02
>             Reporter: Paolo Bonzini
>             Priority: Critical
> 
> 
> VIRTIO_BLK_F_CONFIG_WCE is important in order to achieve good performance (up to 2x, though more realistically +30-40%) in latency-bound workloads. However, it was removed by mistake together with VIRTIO_BLK_F_FLUSH.
> 
> The lack of this feature means that virtio 1.0 cs02 does not achieve parity with 0.9.
> 
> 
> 
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Some notes on using jira: it's ok to create any amount of new issues
but they need to be open before we'll vote on them.

Before that point, you need to
- set environment to list the reporter.
- set proposal to a quick summary of the change +
  link to mailing list posting.
- set fixed-in to version which should include the fix in your
  opinion
- make issue open

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