[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH] QEMU: change default disk cache behavior
|
From: |
Jes Sorensen |
|
Subject: |
Re: [Qemu-devel] [PATCH] QEMU: change default disk cache behavior |
|
Date: |
Thu, 20 May 2010 15:36:46 +0200 |
|
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100330 Fedora/3.0.4-1.fc12 Lightning/1.0b2pre Thunderbird/3.0.4 |
On 05/20/10 14:30, Anthony Liguori wrote:
> On 05/20/2010 04:32 AM, address@hidden wrote:
>> Therefore, here is a patch that does two things:
>> - default to "nocache"
>> - in case of failure with nocache, retry with "write-back"
>>
>
> This sort of change requires performance data in a variety of
> circumstances to justify.
>
> And I strongly suspect that such a blanket change would be wrong but
> that a more targeted change like making cache=none default for physical
> devices would satisfy mostly everyone.
Is there any other thing than physical devices attached to the -drive
parameter?
If so, I can take a look at making it more generic when I am back from
holiday next week.
Jes