Re: [Qemu-devel] [RFC V3 0/2] continuous leaky bucket throttling

[Fam Zheng <famz@redhat.com>]

On Fri, 08/02 17:53, Benoît Canet wrote:
> This patchset implement continous leaky bucket throttling.
> 
> It works mostly on the general case.
> The exception is where the load is composed of both reads and writes and two
> limits iops_rd and iops_wr are set.
> The resulting iops are a little above half of the given limits.
> I tried various strategies to avoid this: two timer, two throttled request
> queues or even a different algorithm using a priority queue.
> The problem is still the same in every version of the code: reads and writes
> operation seems entangled.
> 
> Benoît Canet (2):
>   throttle: Add a new throttling API implementing continuus leaky

s/continuus/continuous/

>     bucket.
>   block: Enable the new throttling code in the block layer.
> 
>  block.c                   |  316 ++++++++------------------------
>  block/qapi.c              |   21 +--
>  blockdev.c                |  115 ++++++------
>  include/block/block.h     |    1 -
>  include/block/block_int.h |   33 +---
>  include/qemu/throttle.h   |  111 ++++++++++++
>  util/Makefile.objs        |    1 +
>  util/throttle.c           |  436 +++++++++++++++++++++++++++++++++++++++++++++
>  8 files changed, 698 insertions(+), 336 deletions(-)
>  create mode 100644 include/qemu/throttle.h
>  create mode 100644 util/throttle.c
> 
> -- 
> 1.7.10.4
> 
> 

-- 
Fam