From: Kevin Wolf <kwolf@redhat.com>
To: Leonid Bloch <lbloch@janustech.com>
Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org,
Max Reitz <mreitz@redhat.com>, Eric Blake <eblake@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 0/6] qcow2: Make the L2 cache cover the whole image by default
Date: Fri, 3 Aug 2018 09:38:36 +0200 [thread overview]
Message-ID: <20180803073836.GC4380@localhost.localdomain> (raw)
In-Reply-To: <20180729212744.23709-1-lbloch@janustech.com>
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
> resized.
Are you going to send a new version that makes the changes we agreed on?
Kevin
next prev parent reply other threads:[~2018-08-03 7:38 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-29 21:27 [Qemu-devel] [PATCH 0/6] qcow2: Make the L2 cache cover the whole image by default Leonid Bloch
2018-07-29 21:27 ` [Qemu-devel] [PATCH 1/6 for-3.0] Update .gitignore Leonid Bloch
2018-07-30 15:40 ` Eric Blake
2018-07-30 15:43 ` Eric Blake
2018-07-29 21:27 ` [Qemu-devel] [PATCH 2/6 for-3.0] qcow2: A grammar fix in conflicting cache sizing error message Leonid Bloch
2018-07-29 21:27 ` [Qemu-devel] [PATCH 3/6 for-3.0] qcow2: Options' documentation fixes Leonid Bloch
2018-08-03 11:27 ` [Qemu-devel] [Qemu-block] " Alberto Garcia
2018-08-04 11:52 ` Leonid Bloch
2018-07-29 21:27 ` [Qemu-devel] [PATCH 4/6] qcow2: Update total_sectors when resizing the image Leonid Bloch
2018-07-30 9:43 ` Kevin Wolf
2018-07-30 11:41 ` Leonid Bloch
2018-07-30 12:28 ` Kevin Wolf
2018-08-03 11:56 ` [Qemu-devel] [Qemu-block] " Alberto Garcia
2018-07-29 21:27 ` [Qemu-devel] [PATCH 5/6] qcow2: Make the default L2 cache sufficient to cover the entire image Leonid Bloch
2018-07-29 21:27 ` [Qemu-devel] [PATCH 6/6] qcow2: Resize the cache upon image resizing Leonid Bloch
2018-08-03 12:42 ` [Qemu-devel] [Qemu-block] " Alberto Garcia
2018-08-04 11:53 ` Leonid Bloch
2018-07-30 10:55 ` [Qemu-devel] [PATCH 0/6] qcow2: Make the L2 cache cover the whole image by default Kevin Wolf
2018-07-30 12:13 ` Leonid Bloch
2018-07-30 12:44 ` Kevin Wolf
2018-08-03 13:37 ` Alberto Garcia
2018-08-03 14:55 ` Kevin Wolf
2018-08-06 7:47 ` Alberto Garcia
2018-08-06 10:45 ` Kevin Wolf
2018-08-06 11:07 ` Alberto Garcia
2018-08-06 11:30 ` Kevin Wolf
2018-08-06 11:41 ` Alberto Garcia
2018-08-03 7:38 ` Kevin Wolf [this message]
2018-08-04 11:48 ` Leonid Bloch
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