Re: [9fans] Question about fossil

[Nicolas Bercher <nbercher@yahoo.fr>]

On 08/06/2014 18:56, Bakul Shah wrote:
> 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.

The R-Pi gave me poor results when copying files from the network to a
usb disk (something around 4MB/s).  As Erik mentioned it, all is usb...
I think the R-Pi is not a valuable device for data storage (Linux or
Plan 9).  I'd prefer to use it as a 24/7 terminal, given its low power
consumption.

Nicolas