[lkml]   [2001]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: O_DIRECT please; Sybase 12.5
Dan Kegel <> writes:
> And what are the chances Sybase will support that flag any time
> soon? I just read on news://

When Sybase always submits its buffers block aligned (same requirement as
for raw io) you can do it with a simple LD_PRELOAD hack.

I hacked sapdb (which has source available unlike sybase) to do direct IO
and it seems to not hurt at least.

> It supports raw partitions, which is good; that might satisfy my
> boss (although the administration will be a pain, and I'm not
> sure whether it's really supported by Dell RAID devices).
> I'd prefer O_DIRECT :-(

LVM makes raw partitions much less worse than they used to be. It is
basically a file system of raw partitions; allowing you to move and resize

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:55    [W:0.026 / U:4.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site