[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-block] [RFC PATCH] aio: Add a knob to always poll if there are
|
From: |
Stefan Hajnoczi |
|
Subject: |
Re: [Qemu-block] [RFC PATCH] aio: Add a knob to always poll if there are in-flight requests |
|
Date: |
Fri, 12 Apr 2019 14:45:49 +0100 |
|
User-agent: |
Mutt/1.11.3 (2019-02-01) |
On Wed, Apr 10, 2019 at 06:51:16PM +0200, Sergio Lopez wrote:
> Perhaps it'd be worth doing a simple PoC outside QEMU, using the
> vhost-user-blk example server to avoid the block layer complexity and
> evaluate the raw benefits with different kinds of backends and
> workloads.
Sure, it's worth experimenting with.
libvirt is on top of QEMU. oVirt or OpenStack is on top of libvirt.
It's hard for the user or management tools to set low-level tuning
options like this. We either need smart defaults or self-tuning - knobs
are mostly useful for benchmarking and for a very small number of expert
users.
Stefan
signature.asc
Description: PGP signature