[Coco] 68 Micro Journal

[gene heskett]

On Wednesday, May 11, 2011 02:25:51 PM Steven Hirsch did opine:

> On Wed, 11 May 2011, gene heskett wrote:
> > On Wednesday, May 11, 2011 11:00:14 AM Steven Hirsch did opine:
> >> On Wed, 11 May 2011, gene heskett wrote:
> >>> On Wednesday, May 11, 2011 10:39:31 AM Aaron Wolfe did opine:
> >>>> both of these files are in the torrent here.  maybe someone else
> >>>> who downloaded it can confirm that they have these files?
> >>> 
> >>> Or, knowing that torrent pre-allocates the whole file, rechecks the
> >>> target file on a restart, if their file is sparse, they should
> >>> restart the torrent, causing it to recheck/compare, and fix any
> >>> diffs between the src file and the local copy.
> >> 
> >> Actually, not all bittorrent clients pre-allocate files by default.
> >> This is particularly nasty when you download a DVD-sized ISO image
> >> with sparse allocation.  Even on a fast disk system, reads of such a
> >> fragmented image can be glacial.  The first time I ran into this, I
> >> thought my RAID array had died and gone into limp-home mode.  Took a
> >> while to figure out what was going on and turn on the "preallocate
> >> the entire thing" option.
> > 
> > There is quite likely that to contend with on some file systems.  You
> > didn't say what OS & filesystem you are running, but if its that bad,
> > I would change it forthwith.  Linux, with ext3 journaled, hasn't
> > given me any trouble in that regard.
> 
> This was Linux, accessing an ext3 + journaling filesystem over NFS on a
> gigabit ethernet network.  It might be hitting NFSv3 at a weak point,
> since read speads are more typically > 50MB/sec.

I would point a well sharpened finger at NFS3, I have never actually made 
it work as fast as a 125 kilobaud floppy here.  So if I need to send 
something to the buntu box running my milling machine, I use CIFS.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
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