Re: fsync vs fdatasync on Linux

Denis Perchine (dyp@perchine.com)
Sun, 18 Feb 2001 18:41:59 +0600

On Sunday 18 February 2001 18:22, Denis Perchine wrote:
> Hello,
>
> as fas as I can see from fdatasync man page, and from the latest kernel
> sources (2.4.1ac3, fs/buffer.c), they are equivalent.
>
> Using of fdatasync in database can gain significant gain on systems which
> supports it (on HP it gains up to 25% with pg_bench on PostgreSQL 7.1b5).
>
> Are there any plans to implement this correctly? And due to what problems
> it was not implemented yet?

Forget this crap. Seems I missed these lines:
err = file->f_op->fsync(file, dentry, 0);
err = file->f_op->fsync(file, dentry, 1);

-- 
Sincerely Yours,
Denis Perchine


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