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Re: [Qemu-block] [PATCH 0/6] qcow2: Make the L2 cache cover the whole im

From: Leonid Bloch
Subject: Re: [Qemu-block] [PATCH 0/6] qcow2: Make the L2 cache cover the whole image by default
Date: Sat, 4 Aug 2018 14:48:15 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

On 08/03/2018 10:38 AM, Kevin Wolf wrote:
Am 29.07.2018 um 23:27 hat Leonid Bloch geschrieben:
This series makes the qcow2 L2 cache cover the entire image by default.
The importance of this change is in noticeable performance improvement,
especially with heavy random I/O. The memory overhead is very small:
only 1 MB of cache for every 8 GB of image size. On systems with very
limited RAM the maximal cache size can be limited by the existing
cache-size and l2-cache-size options.

The L2 cache is also resized accordingly, by default, if the image is

Are you going to send a new version that makes the changes we agreed on?

Yes, sure. Was somewhat busy. Will send today or tomorrow.

Thanks for reminding.


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