RE: Jaws slows down network transfers, a lot!

From: "Chris Hofstader" <cdh@xxxxxxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Date: Sat, 20 Sep 2008 17:38:15 -0400
I think that with, as Sina has provided, a definite path to reproduce the
problem is far more likely to move FS to action to remedy the issue.  


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 Trouble
Sent: Saturday, September 20, 2008 9:45 AM
To: programmingblind@xxxxxxxxxxxxx
Subject: Re: Jaws slows down network transfers, a lot!

The problem that is going on is what i have ben saying for the past 
five years, and now someone comes up with proof to prove it. jaws 
eats your resources like a fat cow on steroids. its like Jim 
kitchen's games. The load up all they need in ram and stay there, no 
dropping out when done just hog that ram.So on a 4gig ram box your 
get around 2 gig by op, and 2 for programs. now throw jaws in there 
and you get fragged ram that slows the box like a horse wearing led shoes.
yes, FS knows this and still does nothing, Jaws barely has garbage 
collecting and every programmer knows software needs that to be 
efficient. Do they care? Why? you the user don't buy it and so the 
... with you by FS!
At 10:48 AM 9/17/2008, you wrote:
>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
>
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Tim
trouble
"Never offend people with style when you can offend them with substance."
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References:
- Jaws slows down network transfers, a lot!
  - From: Sina Bahram
- Re: Jaws slows down network transfers, a lot!
  - From: Trouble
RE: Jaws slows down network transfers, a lot!

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