lkml.org 
[lkml]   [2002]   [Sep]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: (fwd) Re: [RFC] mount flag "direct"
On Tue, Sep 03, 2002 at 11:19:21PM +0100, Anton Altaparmakov wrote:
> At 22:48 03/09/02, Peter T. Breuer wrote:
> >What one has to get rid of is cached metadata state. I'm open to suggestions.
>
> This is crazy. I don't think you understand what that actually implies. I
> will give you a real world example below.

It is crazy, but probably achievable. One could wrap all VFS ops (read,
write, rename, unlink, etc) to do:

distributed_lock()
mount()
op()
umount()
distributed_unlock()

[...]
> I am completely serious, we are talking at least hundreds of milliseconds
> possibly even several seconds to read that single byte.
>
> What was that about 50GiB/sec performance again...?

Well, you'll probably get 50B/sec from it..

-Kevin

--
------------------------------------------------------------------------
| Kevin O'Connor "BTW, IMHO we need a FAQ for |
| kevin@koconnor.net 'IMHO', 'FAQ', 'BTW', etc. !" |
------------------------------------------------------------------------
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:28    [W:0.118 / U:0.552 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site