Re: Multi disk performance (8 disks), limit 230 MB/s

[Roman Dementiev]

Andrew Morton wrote:

> Roman Dementiev wrote:
> >
> > 8 disks:        214 ? 229 ?       40 %           6.7 / 0.8 /10.8
> >
>
> raw access in 2.4 isn't very good - it uses 512-byte chunks.  If
> you can hunt down the `rawvary' patch that might help, but I don't
> know if it works against IDE.
>
> Testing 2.5 would be interesting ;)

I still can't run it, 'interrupt lost' ...

>
>
> Try the same test with O_DIRECT reads or writes against ext2 filesystems.
> That will use 4k blocks.

Thanx, it works. I have got 375 MB/s.

Roman