IMHO(!):
1. It will be slower, as pre-fill takes its significant time.
2. DMA-Kernel competition makes this method unusable.
On 6 January 2015 at 04:04, Kirill A. Shutemov wrote:
> On Mon, Jan 05, 2015 at 03:52:10PM +, One Thousand Gnomes wrote:
>> > I tried in all ways to implement this with
On Mon, Jan 05, 2015 at 03:52:10PM +, One Thousand Gnomes wrote:
> > I tried in all ways to implement this with mmap(), but it does not success,
> > because I did not find a way to mmap() file as O_WRONLY. Mapping as O_RDWR
> > makes kernel to pre-fill mapped memory with partition data. So, ker
> I tried in all ways to implement this with mmap(), but it does not success,
> because I did not find a way to mmap() file as O_WRONLY. Mapping as O_RDWR
> makes kernel to pre-fill mapped memory with partition data. So, kernel and
> DMA actually compete on the RAM area to fill it - one with garbag
On Sat, Dec 27, 2014 at 03:31:26PM +0200, Leon Pollak wrote:
> Hi, all.
> There was a discussion here:
> https://lkml.org/lkml/2007/1/10/231
>
> Linus wrote in this discussion:
> "So don't use O_DIRECT. Use things like madvise() and posix_fadvise()
> instead"
>
> After the full week of tests, sea
Hi, all.
There was a discussion here:
https://lkml.org/lkml/2007/1/10/231
Linus wrote in this discussion:
"So don't use O_DIRECT. Use things like madvise() and posix_fadvise()
instead"
After the full week of tests, searches, discussions, I have impudence to
turn to the community - has one tried t
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