[tahoe-dev] Tahoe on little ARM CPU (Re: Client/helper RAM usage)

[Zooko O'Whielacronx]

On Sun, Jul 5, 2009 at 8:59 AM, Zooko O'Whielacronx<zookog at gmail.com> wrote:
> I used Tahoe-LAFS on Zandr's 266 MHz ARM NAS box yesterday.  It has
> 128 MiB of RAM.  It seemed to work okay, but I had to stop
> experimenting with it since both my ISP and Zandr's router seem to be
> flaky at the moment (so I could no longer open TCP connections to that
> box).

Here is the statistics output from uploading a file from my home
computer, using Zandr's NAS box as the Tahoe-LAFS gateway.  It shows
that there was only one storage server reachable to the NAS box and
accepting shares at that time (I wonder why).  It also shows that the
speed of CPU-intensive parts like erasure coding and encryption was
faster than the speed of pushing shares over the network to the
storage servers.

Regards,

Zooko

Uploading File... done!
Upload Results:

    * URI: URI:CHK:a5l34bmeviutszz55b5dav3xhu:ze4pmszhqoxa5ypitvhoiobghozcbmf5nlala2kk4mujbn5424pq:3:10:371474
    * Download link:
/uri/URI:CHK:a5l34bmeviutszz55b5dav3xhu:ze4pmszhqoxa5ypitvhoiobghozcbmf5nlala2kk4mujbn5424pq:3:10:371474
    * Sharemap:
          o 0 -> placed on [6fyx5u4z]
          o 1 -> placed on [6fyx5u4z]
          o 2 -> placed on [6fyx5u4z]
          o 3 -> placed on [6fyx5u4z]
          o 4 -> placed on [6fyx5u4z]
          o 5 -> placed on [6fyx5u4z]
          o 6 -> placed on [6fyx5u4z]
          o 7 -> placed on [6fyx5u4z]
          o 8 -> placed on [6fyx5u4z]
          o 9 -> placed on [6fyx5u4z]
    * Servermap:
          o [6fyx5u4z] got shares: #0,#1,#2,#3,#4,#5,#6,#7,#8,#9
    * Timings:
          o File Size: 371474 bytes
          o Total: 32 seconds (11.4kBps)
                + Storage Index: 1.51s (246.1kBps)
                + [Contacting Helper]:
                      # [Helper Already-In-Grid Check]:
                + [Upload Ciphertext To Helper]: ()
                + Peer Selection: 3.97s
                + Encode And Push: 27 seconds (19.3kBps)
                      # Cumulative Encoding: 6.51s (57.1kBps)
                      # Cumulative Pushing: 12 seconds (29.2kBps)
                      # Send Hashes And Close: 6.75s
                + [Helper Total]:

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