Sina, please let me know what results you get if you run that test, since I have FS listening to me at the moment, I can add that to my info to them
laters, inthane proprietor, The Grab Bag, for blind computer users and programmers http://grabbag.alacorncomputer.com Owner: Alacorn Computer Enterprises "own the might and majesty of a Alacorn!" www.alacorncomputer.com Owner: Agemtree "merchants in fine facetted and cabochon gemstones" www.agemtree.comoperator: Fruit Basket Demo Sight, where you can find a similar project done in several
programming languages, along with its source code, so you can decide what language is right
for you http://fruitbasketdemo.alacorncomputer.com----- Original Message ----- From: "Sina Bahram" <sbahram@xxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx> Sent: Thursday, September 18, 2008 8:27 AM Subject: RE: Jaws slows down network transfers, a lot! Definitely, I agree, especially for multimedia applications, but this is a massive slow down ... We're talking almost an order of magnitude reduciton in transfer speed, *smile* Also it is not a processing issue per say, since I have a dual core system, and never did they exceed even 30 percent on either core during this test. One thing I will do is slave jaws to one core, and then do the transfer, seeing if that helps. If it does, then it sounds like a context switch issue caused by jaws preemptivley interupting for whatever reason it may have. Take care, Sina -----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 //www.freelists.org/list/programmingblind
-- 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 __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind __________ Information from ESET NOD32 Antivirus, version of virus signature database 3451 (20080918) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3451 (20080918) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind __________ Information from ESET Smart Security, version of virus signature database 3450 (20080918) __________ The message was checked by ESET Smart Security. http://www.eset.com __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind __________ View the list's information and change your settings at //www.freelists.org/list/programmingblind __________View the list's information and change your settings at //www.freelists.org/list/programmingblind
