On 09/14/2010 12:23 PM, Avi Kivity wrote:
On 09/14/2010 07:08 PM, Anthony Liguori wrote:
Yes, I hit this too. So without this patch, it does serialize all
allocating writes?
Yes, but my patch is not enough as it turns out.
When dealing with O_DIRECT, we have to handle RMW on our own which
On 09/14/2010 07:08 PM, Anthony Liguori wrote:
Yes, I hit this too. So without this patch, it does serialize all
allocating writes?
Yes, but my patch is not enough as it turns out.
When dealing with O_DIRECT, we have to handle RMW on our own which
means we need to serialize access to the s
On 09/14/2010 11:28 AM, Avi Kivity wrote:
On 09/14/2010 06:16 PM, Anthony Liguori wrote:
Right, it should only freeze if the L2 table needs to be allocated,
not if it only needs to be updated. IOW,
diff --git a/block/qed.c b/block/qed.c
index 4c4e7a2..0357c03 100644
--- a/block/qed.c
+++ b
On 09/14/2010 06:16 PM, Anthony Liguori wrote:
Right, it should only freeze if the L2 table needs to be allocated,
not if it only needs to be updated. IOW,
diff --git a/block/qed.c b/block/qed.c
index 4c4e7a2..0357c03 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -948,7 +948,7 @@ static voi
On 09/14/2010 11:03 AM, Stefan Hajnoczi wrote:
On Tue, Sep 14, 2010 at 4:47 PM, Kevin Wolf wrote:
Am 14.09.2010 17:20, schrieb Anthony Liguori:
On 09/14/2010 10:11 AM, Kevin Wolf wrote:
Am 14.09.2010 15:43, schrieb Anthony Liguori:
Hi Avi,
On 09/14/2010 08:07 AM
On 09/14/2010 05:25 PM, Anthony Liguori wrote:
The incremental version of this is hard for me to understand.
bdrv_read() may be implemented in terms of bdrv_aio_read() +
qemu_io_wait() which dispatches bottom halves. This is done through a
shared resource so if you allow bdrv_read() to be
On Tue, Sep 14, 2010 at 4:47 PM, Kevin Wolf wrote:
> Am 14.09.2010 17:20, schrieb Anthony Liguori:
>> On 09/14/2010 10:11 AM, Kevin Wolf wrote:
>>> Am 14.09.2010 15:43, schrieb Anthony Liguori:
>>>
Hi Avi,
On 09/14/2010 08:07 AM, Avi Kivity wrote:
> Here's a draft of a pl
Am 14.09.2010 17:20, schrieb Anthony Liguori:
> On 09/14/2010 10:11 AM, Kevin Wolf wrote:
>> Am 14.09.2010 15:43, schrieb Anthony Liguori:
>>
>>> Hi Avi,
>>>
>>> On 09/14/2010 08:07 AM, Avi Kivity wrote:
>>>
Here's a draft of a plan that should improve qcow2 performance. It's
On 09/14/2010 08:07 AM, Avi Kivity wrote:
Here's a draft of a plan that should improve qcow2 performance. It's
written in wiki syntax for eventual upload to wiki.qemu.org; lines
starting with # are numbered lists, not comments.
= Basics =
At the minimum level, no operation should block the
On 09/14/2010 10:11 AM, Kevin Wolf wrote:
Am 14.09.2010 15:43, schrieb Anthony Liguori:
Hi Avi,
On 09/14/2010 08:07 AM, Avi Kivity wrote:
Here's a draft of a plan that should improve qcow2 performance. It's
written in wiki syntax for eventual upload to wiki.qemu.org; lines
startin
Am 14.09.2010 15:43, schrieb Anthony Liguori:
> Hi Avi,
>
> On 09/14/2010 08:07 AM, Avi Kivity wrote:
>> Here's a draft of a plan that should improve qcow2 performance. It's
>> written in wiki syntax for eventual upload to wiki.qemu.org; lines
>> starting with # are numbered lists, not comment
Hi Avi,
On 09/14/2010 08:07 AM, Avi Kivity wrote:
Here's a draft of a plan that should improve qcow2 performance. It's
written in wiki syntax for eventual upload to wiki.qemu.org; lines
starting with # are numbered lists, not comments.
Thanks for putting this together. I think it's really
Here's a draft of a plan that should improve qcow2 performance. It's
written in wiki syntax for eventual upload to wiki.qemu.org; lines
starting with # are numbered lists, not comments.
= Basics =
At the minimum level, no operation should block the main thread. This
could be done in two way
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