|
From: | Andreas Färber |
Subject: | Re: [Qemu-devel] [PATCH 0/4] qcow2: Improve cluster refcount update |
Date: | Mon, 10 Nov 2008 21:15:40 +0100 |
Am 07.11.2008 um 16:37 schrieb Anthony Liguori:
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 todefault 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,
I'm not familiar with this area of code, so just as a reminder for consideration, recently Blue Swirl added an option to disable AIO. Some BSDs as well as Haiku may not have (full) POSIX AIO support. Dumping non-AIO code for better performance on Linux would seem to counterpoint the broadening platform support?
Andreas
[Prev in Thread] | Current Thread | [Next in Thread] |