Re: [PATCH 1/2] conf: add disk cache tuning parameters after qemu

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

 



On Mon, Sep 26, 2016 at 12:15:42 +0300, Nikolay Shirokovskiy wrote:
> On 26.09.2016 12:01, Peter Krempa wrote:

[...]

> Sorry, I forget to write down the motivation.
> 
> Internally qemu uses 3 orthogonal flags to configure disk cache. They
> are exposed in interface too quite long time ago (29c4e2b). All-in-one
> cache parameter that libvirt uses now do not provide all possible
> values (5 vs 8). For example absent combination of direct + no flush (no sync)
> is useful to speed up tests.

Well, if there are useful combinations we can add them to the existing
cache setting.

> So I decided to provide new possibilities just as qemu does - keep
> old parameter and use new ones to tune over.

I don't think this is a good idea at all. It's very qemu specific and
can be mapped to existing elements.

Peter

Attachment: signature.asc
Description: Digital signature

--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list

[Index of Archives]     [Virt Tools]     [Libvirt Users]     [Lib OS Info]     [Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Big List of Linux Books]     [Yosemite News]     [KDE Users]     [Fedora Tools]