[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH v6] migration/block: use blk_pwrite_zeroes for e

From: 858585 jemmy
Subject: Re: [Qemu-devel] [PATCH v6] migration/block: use blk_pwrite_zeroes for each zero cluster
Date: Mon, 24 Apr 2017 20:26:06 +0800

On Mon, Apr 24, 2017 at 8:19 PM, Fam Zheng <address@hidden> wrote:
> On Mon, 04/24 20:09, Fam Zheng wrote:
>> It's a separate problem.
> To be specific:
> 1) there is an option "overlap-check" that one can use to
> disable the costly metadata check;
yes, i will disable metadata check, and test the performance again.

> 2) qcow2 with cluster_size = 512 is probably too uncommon to be optimized for.
if culster_size is very small, should disable metadata check default?

> Both are irrelevant to why and how this patch can be improved, IMO.
> Fam

reply via email to

[Prev in Thread] Current Thread [Next in Thread]