[LUAU] controller amount of data to flush from buffer cache

[Vince Hoang]

On Mon, 4 Oct 2004 14:24:55 -1000 (HST), Jimen Ching <jching at flex.com> wrote:
> The problem is, I'm writing large amounts of data to disk.  I.e. 4megs per
> write() call and gigabytes of data.  The buffer cache is intercepting
> these write() calls and flushes what seems to be 32k at a time.  I want
> the buffer cache to flush at least 512k at a time.  Can this be controlled
> from userland in 2.4?  If it can be done in 2.6, I would like to hear it
> too.

elvtune(8) might be of use to you.  It lets you tune I/O based on
time, rather than size, however.

Assuming, ext3 you might consider the data=journal and noatime mount
options if you have not already done so.

-Viince