Could they use it? Yes. Are they going to? Probably not. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of peter greco Sent: Thursday, September 24, 2009 6:31 PM To: Joseph Lee; [email protected]; [email protected]; [email protected]; [email protected]; [email protected] Subject: Re: [Braillenote] virtual memory?
Joseph, HW could use some of the expertise from this list? Cheers. Peter. > ----- Original Message ----- >From: Joseph Lee <[email protected] >To: stephen <[email protected]>, [email protected], [email protected], [email protected], [email protected] >Date sent: Thu, 24 Sep 2009 18:18:12 -0700 >Subject: Re: [Braillenote] virtual memory? >Hi,, >Thanks for a simpler explanation of VM running out. If you give me >permission, I'll post your explanation on the PBWORKS page (good thing >that I put a VM article as a place holder). Again, thanks for your >efforts (I'll regard you as one of the experts...). >Cheers, >Joseph >> ----- Original Message ----- >>From: stephen <[email protected] >>To: peter greco <[email protected]>, >[email protected],[email protected], >[email protected] >>Date sent: Thu, 24 Sep 2009 12:49:30 +0100 >>Subject: Re: [Braillenote] virtual memory? >>Hi, >>Almost all computing systems use virtual memory: note takers, >>palmtops, netbooks, notebooks, laptops, pcs, ... >>There are at least four things that tend towards running out of >>virtual memory, there may be more. >>When a system has run out of vm, the only way out really is to >>reset/reboot. >>Those four things:- >>1. If the system has little vm to start with then it will always >>struggle, particularly when trying a number of opperations >>concurrently or when one application has a lot to do, (see 4 below). >>This I'm sure would need at least a change from CE 4.2 to help the BN. >>2. If the underlying vm management system, (for the BN that's CE >>4.2 and perhaps a bit of KeySoft), then vm can be used up quicker than >>it should be. >>This vm management has to: satisfy requests for memory from >>applications; keep track of who has what memory and where; efficiently >>recycle memory handed back by applications. >>If this management is not done well then parts of the vm that should >>be available are not. >>If for example an application gives back memory but the management >>does not reclaim it properly, it might not be available for another >>program when it should be. >>This management is not at all a simple task. >>3. If applications do not handle memory well. >>Example, if they hang on to memory that they should not then the vm >>management hasn't got a chance. >>This also is not entirely straightforward because if you don't know >>how much memory you will need, do you ask for it in little chunks as >>you need it or ask for loads assuming you might require so much. >>4. When applications are asked to perform a task which is beyond them >>or the system on which they run. >>An example of this might be KeyWeb trying to process a vast web page. >>No matter how well KeyWeb is written, an enormous or very complex page >>will always require a large amount of memory. >>I have known some cases on other computing systems where an >>application was so low on remaining vm that it could not even get >>enough to give the message, "out of vm". >>If this were to happen on the BN, because of the way that KeySoft is >>written, I think it brings the whole system down. >>Regards, >>Steve. >>----------------------------------------------------------------- >>----------------------------------------------------------------- >>--------------------------------- >>"He that believeth on him is not condemned: but he that believeth not >>is condemned already, because he hath not believed in the name of the >>only begotten Son of God. >>And this is the condemnation, that light is come into the world, and >>men loved darkness rather than light, because their deeds were evil." >>(John 3:18-19 AV) >>----------------------------------------------------------------- >>----------------------------------------------------------------- >>--------------------------------- >>> ----- Original Message ----- >>>From: peter greco <[email protected] >>>To: "Alex Hall" <[email protected]>, >>[email protected],[email protected], >>[email protected] >>>Date sent: Sat, 19 Sep 2009 10:02:27 +0930 >>>Subject: Re: [Braillenote] virtual memory? >>>Hi Alex. >>>Thanks for this! >>>So, with other "products", they never run out of virtual memory? >>>Or do they? >>>Also, at the risk of sounding mystical, where does the virtual memory >>>go? Does it mount up say on other note takers or conventional >>>computers to a stage where they too need to be reset? >>>Would a concerted campaign by BN users to get the c e upgrade have >>>any effect on HW?? >>>Best! >>>Peter. >>>> ----- Original Message ----- >>>>From: "Alex Hall" <[email protected] >>>>To: "peter greco" <[email protected]>,"Jahmal Lovato" >>><[email protected]>,<[email protected] >>>>Date sent: Fri, 18 Sep 2009 07:29:14 -0400 >>>>Subject: Re: [Braillenote] virtual memory? >>>>Windows CE 4.2 is the cause of the bad memory usage on the bn, >>>plus there is >>>>little memory to begin with, especially when you are talking web >>>browsing. >>>>If a site has a lot of images and fancy links it will probably >>>take up more >>>>space, but there is really no way to tell. This is why >>>skweezer.com is so >>>>nice. >>>>Have a great day, >>>>Alex >>>>New email address: [email protected] >>>>----- Original Message ----- >>>>From: "peter greco" <[email protected] >>>>To: "Jahmal Lovato" <[email protected]>; >>>><[email protected] >>>>Sent: Friday, September 18, 2009 6:22 AM >>>>Subject: [Braillenote] virtual memory? >>>>> Why do some other note takers and conventional computers not run >>>out of >>>>> virtual memory? >>>>> Why do some sites use up so much more virtual memory than >>>others? >>>>> Is there a way of knowing which sites use alot, apart from >>>trying them and >>>>> having your BN tell you the message? >>>>> Peter. >>>>>> ----- Original Message ----- >>>>>>From: Jahmal Lovato <[email protected] >>>>>>To: [email protected] Date sent: Fri, 18 Sep 2009 >>>>>>16:38:01 +1200 >>>>>>Subject: [Braillenote] Ethernet port? >>>>>>Hi all, especially HW, >>>>>>Is there a way, if you ever do a hard ware update to add an >>>>>>ethernet port? >>>>>>Jahmal >>>>>>___ >>>>>>Replies to this message will go directly to the sender. >>>>>>If your reply would be useful to the list, please send a copy to >>>>>>the list as well. >>>>>>To leave the BrailleNote list, send a blank message to >>>>>>[email protected] >>>>>>To view the list archives or change your preferences, visit >>>>>>http://list.humanware.com/mailman/listinfo/braillenote >>>>> ___ >>>>> Replies to this message will go directly to the sender. >>>>> If your reply would be useful to the list, please send a copy to >>>>> the list as well. >>>>> To leave the BrailleNote list, send a blank message to >>>>> [email protected] >>>>> To view the list archives or change your preferences, visit >>>>> http://list.humanware.com/mailman/listinfo/braillenote >>>___ >>>Replies to this message will go directly to the sender. >>>If your reply would be useful to the list, please send a copy to the >>>list as well. >>>To leave the BrailleNote list, send a blank message to >>>[email protected] >>>To view the list archives or change your preferences, visit >>>http://list.humanware.com/mailman/listinfo/braillenote >>___ >>Replies to this message will go directly to the sender. >>If your reply would be useful to the list, please send a copy to the >>list as well. >>To leave the BrailleNote list, send a blank message to >>[email protected] >>To view the list archives or change your preferences, visit >>http://list.humanware.com/mailman/listinfo/braillenote ___ Replies to this message will go directly to the sender. If your reply would be useful to the list, please send a copy to the list as well. To leave the BrailleNote list, send a blank message to [email protected] To view the list archives or change your preferences, visit http://list.humanware.com/mailman/listinfo/braillenote ___ Replies to this message will go directly to the sender. If your reply would be useful to the list, please send a copy to the list as well. To leave the BrailleNote list, send a blank message to [email protected] To view the list archives or change your preferences, visit http://list.humanware.com/mailman/listinfo/braillenote
