Re: [9fans] Question about fossil

[Bakul Shah <bakul@bitblocks.com>]

On Sun, 08 Jun 2014 03:56:24 EDT erik quanstrom <quanstro@quanstro.net> wrote:
> > - try this out on a small scale before you commit to it, as I
> >   suspect you'll run into various limits and may be bugs. Do
> >   report what you discover.
> > - performance will likely be poor. For better performance you
> >   may want to keep venti index on a separate (flash) disk.
> > - it would be nice if you can come up with a workable setup
> >   for a venti server!
>
> usb performance is ~4-7MB/s.  this is the best you can hope for
> from the disk.  venti will only slow this down by multiplying
> disk accesses and being a bit seeky.  keep in mind if you're
> using this for a venti server, that usb b/w needs to be shared
> with tcp.

The last time I measured this (Aug 2012) raw disk write was
10MB/s, file writes were 2MB/s. On the same h/w & disk linux
got 25MB/s (don't recall file throughput). And Linux gets
11.3MB/s ethernet throughput compared 3.7MB/s on 9pi (both
with ttcp). Linux tcp throughput is close to linespeed.

Might almost be worth using p9p vent under linux!  And keep
isects on the sdcard and arenas on an external disk.