Re: [9fans] Venti flash device?

Re: [9fans] Venti flash device?

[erik quanstrom]

you might want a cf:pata adaptor.  if you really need sata, chain a 
sata:pata adaptor.  it's a bit messy, but cf is easier to get,
cheeper per gigabyte and faster than flash drives.  

- erik

Re: [9fans] Venti flash device?

[Russ Cox]

On 2/26/07, erik quanstrom <quanstro@coraid.com> wrote:
> you might want a cf:pata adaptor.  if you really need sata, chain a
> sata:pata adaptor.  it's a bit messy, but cf is easier to get,
> cheeper per gigabyte and faster than flash drives.

but still pretty slow, even compared to magnetic disk.

Re: [9fans] Venti flash device?

[David Leimbach]

On 2/26/07, erik quanstrom <quanstro@coraid.com> wrote:
> you might want a cf:pata adaptor.  if you really need sata, chain a
> sata:pata adaptor.  it's a bit messy, but cf is easier to get,
> cheeper per gigabyte and faster than flash drives.
>
> - erik
>

I think they come with PATA connectors too.  Might not need that.

Re: [9fans] Venti flash device?

[David Leimbach]

On 2/26/07, Russ Cox <rsc@swtch.com> wrote:
> On 2/26/07, erik quanstrom <quanstro@coraid.com> wrote:
> > you might want a cf:pata adaptor.  if you really need sata, chain a
> > sata:pata adaptor.  it's a bit messy, but cf is easier to get,
> > cheeper per gigabyte and faster than flash drives.
>
> but still pretty slow, even compared to magnetic disk.
>

Read at about 70MB/s write at about 60MB/s.

It's probably fast enough for my home use.

http://www.adtron.com/products/I25fb-IDEFlashDisk.html

Honestly I'm not sure what I get from my disks, I tend to go pretty
low end though when I buy them. :-)

Re: [9fans] Venti flash device?

[John Floren]

On 2/26/07, David Leimbach <leimy2k@gmail.com> wrote:
> On 2/26/07, Russ Cox <rsc@swtch.com> wrote:
> > On 2/26/07, erik quanstrom <quanstro@coraid.com> wrote:
> > > you might want a cf:pata adaptor.  if you really need sata, chain a
> > > sata:pata adaptor.  it's a bit messy, but cf is easier to get,
> > > cheeper per gigabyte and faster than flash drives.
> >
> > but still pretty slow, even compared to magnetic disk.
> >
>
> Read at about 70MB/s write at about 60MB/s.
>
> It's probably fast enough for my home use.
>
> http://www.adtron.com/products/I25fb-IDEFlashDisk.html
>
> Honestly I'm not sure what I get from my disks, I tend to go pretty
> low end though when I buy them. :-)
>
hdparm gives me about 314 MB/s read for cached read, 23 MB/s for
buffered read on my 6-year-old, 80GB hard drive.


John
-- 
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

Re: [9fans] Venti flash device?

[David Leimbach]

On 2/26/07, John Floren <slawmaster@gmail.com> wrote:
> On 2/26/07, David Leimbach <leimy2k@gmail.com> wrote:
> > On 2/26/07, Russ Cox <rsc@swtch.com> wrote:
> > > On 2/26/07, erik quanstrom <quanstro@coraid.com> wrote:
> > > > you might want a cf:pata adaptor.  if you really need sata, chain a
> > > > sata:pata adaptor.  it's a bit messy, but cf is easier to get,
> > > > cheeper per gigabyte and faster than flash drives.
> > >
> > > but still pretty slow, even compared to magnetic disk.
> > >
> >
> > Read at about 70MB/s write at about 60MB/s.
> >
> > It's probably fast enough for my home use.
> >
> > http://www.adtron.com/products/I25fb-IDEFlashDisk.html
> >
> > Honestly I'm not sure what I get from my disks, I tend to go pretty
> > low end though when I buy them. :-)
> >
> hdparm gives me about 314 MB/s read for cached read, 23 MB/s for
> buffered read on my 6-year-old, 80GB hard drive.

I get 20.94MB/sec in parallels with Fedora Core 4.

Turning DMA on in Parallels ups me to 35.89MB/sec

Cached reads show 1440.06 MB/sec in Parallels though so I have no idea
what the heck it's really measuring :-)

At any rate, I'm getting along fine with virtualized OSes and almost
never expect amazing performance from Plan 9 compared to Linux and
other OSes.

In fact, I'd say performance of "good enough" is often just that for
my home use.

I'm not one of those gentoo people :-)

>
>
> John
> --
> Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn
>

Re: [9fans] Venti flash device?

[John Floren]

On 2/26/07, David Leimbach <leimy2k@gmail.com> wrote:
<snip>
> In fact, I'd say performance of "good enough" is often just that for
> my home use.
>
> I'm not one of those gentoo people :-)
>

You fool! You're just losing precious clock cycles by not taking the 3
days to completely recompile your kernel, KDE, and Firefox!
I wonder how many times you have to start Firefox to make that .3 sec
difference add up to the amount of time it took to compile the damn
thing...


John
-- 
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn

Re: [9fans] Venti flash device?

[erik quanstrom]

of course, the real reason to use gentoo is so you can leave stuff
like ldap off your system without going through rpm dependency
hell.

if you're using shared libraries, i don't think there is any way around
dependency hell short of
a) accepting whatever a distribution gives you lock, stock and barrel
(and hoping that they fix bugs in a timly fashion)

b) or compiling updates yourself.  fortunately gentoo makes it easy to
find what to compile.

there's no performance benefit to compiling things yourself.  but i have
gotten linux 2.6 with X11 working on a thinkpad 570.  all the stock
binary distros of X11 include instructions that the pII on that machine
doesn't recognize. (admittedly, it was a week moment.)

the only payoff is, i appreciate the work russ and the guys at the labs did
to make plan 9 so easy to maintain so much more.

☺

- erik

Re: [9fans] Venti flash device?

[David Leimbach]

On 2/26/07, John Floren <slawmaster@gmail.com> wrote:
> On 2/26/07, David Leimbach <leimy2k@gmail.com> wrote:
> <snip>
> > In fact, I'd say performance of "good enough" is often just that for
> > my home use.
> >
> > I'm not one of those gentoo people :-)
> >
>
> You fool! You're just losing precious clock cycles by not taking the 3
> days to completely recompile your kernel, KDE, and Firefox!
> I wonder how many times you have to start Firefox to make that .3 sec
> difference add up to the amount of time it took to compile the damn
> thing...
>
>
> John
> --
> Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn
Surely more time than I care about.

I'll freely admit one of the reasons I liked FreeBSD was I had the
sources to the whole dang release right there if I wanted them.
However trying magic "funroll-loops" and other delicious sounding
options to gcc never seemed to make my 266MHz pentium any faster.

Maybe funroll-loops aren't delicious though...  Maybe eating
funroll-loops hits the gag reflex and will cause you to
fomit-frame-pointer.

-- 
- Passage Matthew 5:37:
   But let your communication be, Yea, yea; Nay, nay: for whatsoever
is more than these cometh of evil.

Re: [9fans] Venti flash device?

[Martin Harriss]

David Leimbach wrote:
> 120GB SATA or IDE flash drive.
> 
> http://www.adtron.com/newsroom/25fb-Solid-State-Disk.html
> 
> Wish I knew where to get these.  None of the standard places I check
> seem to have em.

Why don't you ask them? (there's an email address on the web page.)

I suspect they are expensive.

Martin

[9fans] Venti flash device?

[David Leimbach]

120GB SATA or IDE flash drive.

http://www.adtron.com/newsroom/25fb-Solid-State-Disk.html

Wish I knew where to get these.  None of the standard places I check
seem to have em.