|
From: | Anthony Liguori |
Subject: | Re: [Qemu-devel] [PATCH 0/4] qcow2: Improve cluster refcount update |
Date: | Fri, 07 Nov 2008 09:37:54 -0600 |
User-agent: | Thunderbird 2.0.0.17 (X11/20080925) |
Laurent Vivier wrote:
Le vendredi 07 novembre 2008 à 07:59 -0600, Anthony Liguori a écrit :In all cases #1 is totally useless as it is only cosmetic.#2 improves performance without aligned buffers and with "cache" set to default value.
I'm currently rewriting the block-raw-posix.c O_DIRECT support. I'll commit your patches once I finish that.
I'm switching everything to use the aio functions, introducing a memory pool so that we can efficiently allocate memory for new requests without having unbounded memory allocation, and switching all the synchronous functions to use the aio functions.
Regards, Anthony Liguori
I've installed ubuntu 8.04 desktop on an empty qcow2 file using qemu: without patch: 16 minutes 54 seconds with patch: 15 minutes 44 seconds Regards, Laurent
[Prev in Thread] | Current Thread | [Next in Thread] |