Subject: Re: RAW access to files
To: der Mouse <mouse@Rodents.Montreal.QC.CA>
From: Wojciech Puchar <email@example.com>
Date: 12/13/2001 16:20:16
> > userspace (NO MEMCPY)
> Yes. But it also means no readahead, because there's nowhere to _put_
> the readahead. (Unless the application provides such a place, which we
with modern disk (which does readahead in hardware) or/and large blocks
it's no difference.
> agreed it shouldn't need to do.)
application can use O_ASYNC
> As for the memcpy, I'd rather memcpy from buffers than wait for a disk
> transfer - even a transfer that hits the disk's track cache.
i prefer waiting (=giving CPU to another process)