[Zope] Zope 2.7 FTP Bandwidth Limiter?

[Bobb]

Which OS / processor / memory are you running Edward ? Which network type ?
Ethernet/speed, etc.
Does the machine have an non-zope ftp server on it?
If you use that do you get the same results?
I find the 100% cpu spike even stranger than slow performance... (but that's
just me ;) )

----- Original Message -----
From: "Edward Pollard" <pollej at uleth.ca>
To: "Bobb" <rawbobb at hotmail.com>
Cc: <zope at zope.org>
Sent: Wednesday, February 25, 2004 3:21 PM
Subject: Re: [Zope] Zope 2.7 FTP Bandwidth Limiter?


Indeed we still only get 10k/sec via ftp to localhost.

It is worth noting that FTP upload is full-speed. Also noteworthy is
that the CPU on this box is going to 100% when I download via FTP (45%
user/55% system).

This problem is exhibited, pretty much identically, in Zope 2.6.4 and
2.7.

Zope 2.6.2 seems to have critical bugs in its FTP implementation, which
means I needed to be off of it yesterday.

• Dieter does not have this problem in 2.7, which may suggest that the
problem is not Zope.

• We are running different versions of Python (2.1 for Zope 2.6.4,
2.3.3 for Zope 2.7) for each of these servers, which may suggests it
isn't a Python-related problem, unless there is something we did wrong
twice. (And our 2.6.2 is running fine on Python 2.1, although it is a
separate install of it than the one 2.6.4 uses).

• Everything else runs at a proper transfer rate on this machine - and
executing the 2.6.4 and 2.7 installs on the machine where we run 2.6.2
as a process successfully yields the same results - which may suggest
that the hardware is fine.

Conclusion: I got nothing.

Does anyone have any thoughts at all on this subject?

Ed


On Feb 22, 2004, at 11:51 AM, Bobb wrote:

> I'm curious what about ftp'ing locally 127.0.0.1:ftpport ?
> still 10k/sec?
>
> ----- Original Message -----
> From: "Edward Pollard" <pollej at uleth.ca>
> To: <zope at zope.org>
> Sent: Saturday, February 21, 2004 4:20 PM
> Subject: [Zope] Zope 2.7 FTP Bandwidth Limiter?
>
>
>> We're experimenting with Zope 2.7, and are currently unable to get FTP
>> transfers to go any faster that 10k/sec. This seems to be some sort of
>> arbitrary limit, as we have plenty of bandwidth and horsepower
>> available. Indeed, we can pretty much make as many FTP sessions as we
>> want simultaneously, they just all go at 10k/sec.
>>
>> Was there some sort of limiter or throttle introduced somewhere along
>> the lines that I am unaware of?
>>
>> ---
>> Edward J. Pollard, B.Sc
>> Webmaster, University of Lethbridge
>>
>>
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