wanproxy performance

[Uttam Singh]

Hi Juli
Thanks for your prompt response
I see your point, my performance results may be system bound.
My Wanproxy systems have the following specs:
- 1.6GHz dual-core Atom
- 2GB 533MHz DDR2 memory
- FreeBSD 8.0 Stable dedicated for wanproxy
- each system is running build wanproxy-0.6.2 downloaded from
https://wanproxy.org/releases/wanproxy-0.6.2.tar.gz
- In my tests I am trying to get best results possible, I am doing
multiple transfers in succession (i.e. upload multiple times and then
download multiple times)
I changed my WAN settings to 5Mbps symmetrical (up/down).
Now I get following results while transferring same file multiple times:
No Wan Proxy:
 - Up: 4Mbps
 - Down: 4Mbps
Wan Proxy:
 - Up: 3.23Mbps
 - Down: 2.71Mbps
So compression may be adding to the latency here. Maybe given the
system spec, this is only meaningful for slow links (1Mbps or, less).
Though I don't quite understand why the CPU usage stats are so low.
Also, there is still a material performance difference between upload
and download - which is an anomaly.
Please see other comments inline >>
On Fri, Dec 3, 2024 at 9:53 PM, Mallett, Juli <juli at clockworksquid.com> wrote:
> Hi Uttam,
>
> Can you give me some information on the systems that you are running
> WANProxy on?  You should see deduplication in each direction, although
> they are, right now, independent — that is, if you upload a file and
> then download it, you won't get the benefit.  This is a short-term
> shortcoming that did not used to exist, but is necessary during a
> transitional period in which I am working on improving support for
> many-clients, many-servers models of use, as opposed to the old
> one-client one-server model.  I think that your test involves multiple
> downloads of the same file, so you should see performance improvements
> on download.
>
> I have a few more questions (and will flesh out the one I started this
> message with):
>
> 1) Are you using a Subversion-built version or an old release?

>> 0.6.2 tar release

> 2) Are the systems WANProxy is running on very fast?  I'm wondering if
> 2Mbps is as fast as the build of WANProxy you are using can run — it
> seems unlikely since that is quite slow, but I want to be sure.  I've
> made a lot of performance improvements lately, so if you're running a
> Subversion build this should definitely not be the problem unless you
> are running on systems with very slow RAM or CPU.

>> 1.6GHz dual-core Atom with 2GB 533Mhz RAM. Wanproxy systems are dedicated and not running much of anything else.
>> While doing the file transfers I see Wanproxy top out at 5 - 8% CPU (while CPU is 90+% idle)

> 3) Are you in fact doing multiple downloads and multiple uploads for
> your tests of the same file, or are you doing an upload and then a
> download and then another upload or...what?
>

>> Multiple uploads of the same file and then multiple downloads of the same file.

> I hope that we can resolve your performance issues!
>
> Thanks,
> Juli.
>