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List:       fuse-devel
Subject:    Re: [fuse-devel] How to support big write in kernel 2.6.18
From:       Xing Jing <xingjing.cn () gmail ! com>
Date:       2010-12-13 13:18:21
Message-ID: AANLkTikK=Z-q7iYoUeE8stXUfSTeRvo089pKN7g5boWY () mail ! gmail ! com
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Thank you very much for your reply. As user application is combinded
with the kernel of 2.6.18, it's impossible for us to change the
kernel. May be I have to choose the difficult way.

Is it easy to change normal write to async write? If so, I can
integrate mulitple 4K write requests at the fuse client component and
send big write to my servers. However, I check that fuse kernel model
for kernel <2.6.19 dosen't support aio, I still have a lot of work to
do.

Best wishes.

Jing Xing

2010/12/13 Mark Ruijter <mruijter@gmail.com>:
> Hi Xing,
>
> I am afraid that you have only two options. Either upgrade your kernel to at
> least 2.6.26 or higher, or backport the fuse big_writes code to your kernel.
> I would not recommend the last option though.
>
> Best regards,
>
> Mark Ruijter
>
> Verstuurd vanaf mijn iPhone
>
> Op 13 dec 2010 om 03:21 heeft Xing Jing <xingjing.cn@gmail.com> het volgende
> geschreven:\
>
>> Hi, everyone,
>>    I met a problem of improving the fuse write performance in the
>> kernel of 2.6.18,
>> I know fuse 2.8 has support big write well in the kernel >= 2.6.26,
>> Howerver, the write granularity is
>> still 4KB in 2.6.18, If you have solved the same problem before, would
>> you please tell me the method or
>> some information?
>>    Here is the configuration of my system:
>>
>> OS CentOS 5.5 kernel 2.6.18
>> fuse kernel module:2.7.6
>> fuse lib 2.8.2
>>
>>    Thank you very much. any information would be pleased.
>>
>> Jing
>>
>> 2010.12.13
>>
>>
>> ------------------------------------------------------------------------------
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>

------------------------------------------------------------------------------
Oracle to DB2 Conversion Guide: Learn learn about native support for PL/SQL,
new data types, scalar functions, improved concurrency, built-in packages, 
OCI, SQL*Plus, data movement tools, best practices and more.
http://p.sf.net/sfu/oracle-sfdev2dev 
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