[Wlug] large file performance on linux

[Jeff Moyer]

==> On Wed, 16 May 2007 22:19:14 +0000, brad noyes <maitre at ccs.neu.edu> said:

brad> All,
brad> here's a summary of what i have tried so far. I have tried using the O_DIRECT
brad> and O_SYNC flags with open(2) and i have been using a non-journalling
brad> filesystem, ext2. None of these options have yielded any better performance at
brad> the rates i'm looking for.

brad> I have not tried AIO. 

AIO will allow you to drive your disk subsystem better than
synchronous writes; I really think this would solve your problem.  For
an example of an AIO app, you can google for aio-stress.c.  Or, send
me some code and I'll help get you started.

-Jeff