RE: Jaws slows down network transfers, a lot!

  • From: "Chris Hofstader" <cdh@xxxxxxxxxxxxx>
  • To: <programmingblind@xxxxxxxxxxxxx>
  • Date: Thu, 18 Sep 2008 09:28:27 -0400

Sina's example demonstrated a reproducible pattern of a process slowing down
when JAWS is running.  I am sure that JAWS will slow down many other
programs and processes as well but it is hard to monitor and generate such
reproducible data as Sina did in his experiments.

So, I would recommend sending in any quantifiable data as that can be
reproduced on a bench in the FS test lab and will, therefore, have a much
higher probability of being isolated and, if FS so chooses, remedied.

While FS has more resources than most AT companies, without good data coming
in from the wild, it may not be able to reproduce a problem, hence, not be
able to find a fix.

cdh 


Chris Hofstader
CUNY, BSO, ATG, Odds and Ends
email: cdh@xxxxxxxxxxxxx
Blog: http://www.blindconfidential.blogspot.com
Skype: BlindChristian
phone: 727-896-6393
 

-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of
jaffar@xxxxxxxxxxxxx
Sent: Thursday, September 18, 2008 8:55 AM
To: programmingblind@xxxxxxxxxxxxx
Subject: Re: Jaws slows down network transfers, a lot!

Hi.  I do believe that Jaws doesn't only slow down network transfers, it 
also slows down a number of other processes.  For example, when i work with 
Sibelius which is a music score printing and editting software with Jaws as 
the screen reader, All sounds on my pc slows down considerably.  I do 
believe that Jaws hogs much of a pc's resources.  I also do have a software 
which monitors my pc's memory usage, and I find that my pc uses up more 
memory when I'm using jaws.  Wether this happens because jaws hogs lots of 
memory resources, or, there is indeed a memory leak occuring with the Jaws 
screen reader, or a combination of both, I cannot tell, but in general, most

of my pc's processes slow down quite considerably when I use jaws with 
almost all of my more resource intensive programs.  Cheers!
----- Original Message ----- 
From: "Chris Hofstader" <cdh@xxxxxxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Thursday, September 18, 2008 8:37 PM
Subject: RE: Jaws slows down network transfers, a lot!


Without any real insight into this issue, I'll pitch in my two pennies and
suggest that someone try a large network transfer like the one Sina
described yesterday with JAWS and a system monitor running to determine if
JAWS may have either a memory leak or is increasing in its use of other
system resources (CPU etc.).

With data collected one should send the information to either Eric Damery,
Glen Gordon or both.  Their email addresses are their first initial followed
by their last name @freedomscientific.com.

Whether or not they will place a high priority on debugging and/or fixing
the problem is an unknown but, with solid data in hand it will help them
narrow down the potential root causes and possibly fix the problem.

cdh
Chris Hofstader
CUNY, BSO, ATG, Odds and Ends
email: cdh@xxxxxxxxxxxxx
Blog: http://www.blindconfidential.blogspot.com
Skype: BlindChristian
phone: 727-896-6393


-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of tribble
Sent: Wednesday, September 17, 2008 7:37 PM
To: programmingblind@xxxxxxxxxxxxx
Subject: Re: Jaws slows down network transfers, a lot!

This is true -- jaws connects to the net at least once when it is started.
Short of enforcing the license policy, I see no good reason for it to do
this, and I have complained, but it still does it as of jaws9
I think someone posted an email a while back when this was discussed about a

setting in jfw.ini that affected this. Perhaps someone more knowledgeable
can specify what the settings are.
Cheers.
--le

----- Original Message ----- 
From: "Marlon Brandão de Sousa" <splyt.lists@xxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Wednesday, September 17, 2008 11:25 AM
Subject: Re: Jaws slows down network transfers, a lot!


Well ... may be it's not related, but my firewall registers network
activities when JAWS 9 or 10 starts. This isn't what is happening with
previous versions of the screen reader. Using sigate personal
firewall.
Marlon

2008/9/17, Sina Bahram <sbahram@xxxxxxxxx>:
> Hi all,
>
> I've tested this with jaws 9 and jaws 10 beta.
>
> I'm on a gigabit connection with a very decent fast receiver on the other
> side of my gigabit link. 1.8 terabytes of raid 5 15,000 rpm sass drives,
> so
> on and so forth.
>
> I want to transfer, let's say 50 gigabytes, from my laptop to the external
> machine. I'm just using straight up samba for this, not the best protocol
> I
> know, but it illustrates the point beautifully.
>
> The specs on my machine are 7200 RPM 2.5 inch 250 gigabyte drive in a dell
> e6400 laptop running the latest 2.8ghz core 2 duo processor and four gigs
> of
> ram, etc, etc.
>
> I'm trying to establish that hardware, is not the issue here, *smile*.
>
>
> So I fire up the transfer, and it starts up at around 25 megabytes per
> second. A rather pathetic speed, given the gigabit link, since it's only
> using 20% of the wire, but it's acceptable, for now. I allow the transfer
> to
> continue, of course, and it inches downwards, 24, 23, 20, 18, 15, 13 ...
> It
> goes all the way down to around 7 mb/s ... At this point I'm not even at
> more than 60% of a 100 mb/s connection, so much for gigabit.
>
> I think to myself, there has got to be something wrong with the network,
> or
> hard drives, or something ... This is utterly unacceptable. So I stop
> jaws,
> and have a friend read the transfer speeds.
>
> I not only climb back up, 15, 18, 20, 24, 25, but it keeps going, 28, 30,
> 35, 40, 45, 50 mb/s. I'm now at 400 megabits per second or 50 megabytes
> per
> second over the network. This is now what I'm more used to seeing.
>
> I fire jaws back up, ... 50, 40, 38, 35, 32, 28, and so on, all the way
> back
> down.
>
> What on Earth is going on?
>
> The most I can think of is some interrupt being delayed or some event
> blocking on something stupid jaws must be doing ... But wow.
>
> Any ideas? It sucks to have to turn jaws off every time I want to do a
> file
> transfer.
>
> If folks think this is appropriate, feel free to forward to the jaws
> scripts
> list or any other list.
>
> In case my email gets lost in forwards, contact me at:
>
> sbahram@xxxxxxxxx
>
> Take care,
> Sina
>
> __________
> View the list's information and change your settings at
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>


-- 
When you say "I wrote a program that crashed Windows," people just
stare at you blankly and say "Hey, I got those with the system, for
free."
Linus Torvalds
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