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Re: [Qemu-devel] [PATCH] docs: document how to use the l2-cache-entry-si
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH] docs: document how to use the l2-cache-entry-size parameter |
Date: |
Mon, 19 Feb 2018 10:44:23 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 |
On 02/19/2018 08:54 AM, Alberto Garcia wrote:
This patch updates docs/qcow2-cache.txt explaining how to use the new
l2-cache-entry-size parameter.
Here's a more detailed technical description of this feature:
https://lists.gnu.org/archive/html/qemu-block/2017-09/msg00635.html
And here are some performance numbers:
https://lists.gnu.org/archive/html/qemu-block/2017-12/msg00507.html
Signed-off-by: Alberto Garcia <address@hidden>
---
docs/qcow2-cache.txt | 46 +++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 43 insertions(+), 3 deletions(-)
+Some things to take into account:
+
+ - The L2 cache entry size has the same restrictions as the cluster
+ size (power of two, at least 512 bytes).
Worth mentioning the upper limit of the cluster size?
Otherwise,
Reviewed-by: Eric Blake <address@hidden>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org