Currently in case of append O_DIRECT write (block not allocated yet),
ocfs2 will fall back to buffered I/O. This has some disadvantages.
Firstly, it is not the behavior as expected.
Secondly, it will consume huge page cache, e.g. in mass backup scenario.
Thirdly, modern filesystems such as ext4 sup
Hi Joseph,
Did this version make any performance improvement with v5? I tested v5,
and it didn't improve performance with original buffer write + sync.
Thanks,
Junxiao.
On 01/20/2015 04:01 PM, Joseph Qi wrote:
> Currently in case of append O_DIRECT write (block not allocated yet),
> ocfs2 will f
Hi Junxiao,
On 2015/1/20 16:26, Junxiao Bi wrote:
> Hi Joseph,
>
> Did this version make any performance improvement with v5? I tested v5,
> and it didn't improve performance with original buffer write + sync.
No performance difference between these two versions.
But we have tested with fio befor
On 01/20/2015 05:00 PM, Joseph Qi wrote:
> Hi Junxiao,
>
> On 2015/1/20 16:26, Junxiao Bi wrote:
>> Hi Joseph,
>>
>> Did this version make any performance improvement with v5? I tested v5,
>> and it didn't improve performance with original buffer write + sync.
> No performance difference between t
On 2015/1/22 10:10, Junxiao Bi wrote:
> On 01/20/2015 05:00 PM, Joseph Qi wrote:
>> Hi Junxiao,
>>
>> On 2015/1/20 16:26, Junxiao Bi wrote:
>>> Hi Joseph,
>>>
>>> Did this version make any performance improvement with v5? I tested v5,
>>> and it didn't improve performance with original buffer write
On 01/22/2015 11:54 AM, Joseph Qi wrote:
> On 2015/1/22 10:10, Junxiao Bi wrote:
>> On 01/20/2015 05:00 PM, Joseph Qi wrote:
>>> Hi Junxiao,
>>>
>>> On 2015/1/20 16:26, Junxiao Bi wrote:
Hi Joseph,
Did this version make any performance improvement with v5? I tested v5,
and it di
Hi Joseph,
Sorry for bothering you with the old patches. But I really need to know
what this patch is for.
https://oss.oracle.com/pipermail/ocfs2-devel/2015-January/010496.html
From above email archive, you mentioned those patches aim to reduce the
host page cache consumption. But in my opini
Hi Ryan,
On 2015/8/4 14:16, Ryan Ding wrote:
> Hi Joseph,
>
> Sorry for bothering you with the old patches. But I really need to know what
> this patch is for.
>
> https://oss.oracle.com/pipermail/ocfs2-devel/2015-January/010496.html
>
> From above email archive, you mentioned those patches ai
Hi Joseph,
On 08/04/2015 05:03 PM, Joseph Qi wrote:
> Hi Ryan,
>
> On 2015/8/4 14:16, Ryan Ding wrote:
>> Hi Joseph,
>>
>> Sorry for bothering you with the old patches. But I really need to know what
>> this patch is for.
>>
>> https://oss.oracle.com/pipermail/ocfs2-devel/2015-January/010496.htm
On 2015/8/5 12:40, Ryan Ding wrote:
> Hi Joseph,
>
>
> On 08/04/2015 05:03 PM, Joseph Qi wrote:
>> Hi Ryan,
>>
>> On 2015/8/4 14:16, Ryan Ding wrote:
>>> Hi Joseph,
>>>
>>> Sorry for bothering you with the old patches. But I really need to know
>>> what this patch is for.
>>>
>>> https://oss.ora
On 2015/8/5 12:40, Ryan Ding wrote:
> Hi Joseph,
>
>
> On 08/04/2015 05:03 PM, Joseph Qi wrote:
>> Hi Ryan,
>>
>> On 2015/8/4 14:16, Ryan Ding wrote:
>>> Hi Joseph,
>>>
>>> Sorry for bothering you with the old patches. But I really need to know
>>> what this patch is for.
>>>
>>> https://oss.ora
On 08/05/2015 02:40 PM, Joseph Qi wrote:
> On 2015/8/5 12:40, Ryan Ding wrote:
>> Hi Joseph,
>>
>>
>> On 08/04/2015 05:03 PM, Joseph Qi wrote:
>>> Hi Ryan,
>>>
>>> On 2015/8/4 14:16, Ryan Ding wrote:
Hi Joseph,
Sorry for bothering you with the old patches. But I really need to know
On 2015/8/5 16:07, Ryan Ding wrote:
>
> On 08/05/2015 02:40 PM, Joseph Qi wrote:
>> On 2015/8/5 12:40, Ryan Ding wrote:
>>> Hi Joseph,
>>>
>>>
>>> On 08/04/2015 05:03 PM, Joseph Qi wrote:
Hi Ryan,
On 2015/8/4 14:16, Ryan Ding wrote:
> Hi Joseph,
>
> Sorry for bothering y
HiJoseph,
On 08/05/2015 07:18 PM, Joseph Qi wrote:
> On 2015/8/5 16:07, Ryan Ding wrote:
>> On 08/05/2015 02:40 PM, Joseph Qi wrote:
>>> On 2015/8/5 12:40, Ryan Ding wrote:
Hi Joseph,
On 08/04/2015 05:03 PM, Joseph Qi wrote:
> Hi Ryan,
>
> On 2015/8/4 14:16, Ryan D
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