-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jabka Atu wrote: > couse the big uptimes of debain (some times for weekes without rebooting) > i can mount all root (expect /home) to memory and to gain read/write much > faster. > the files are cped from my harddrive (i thouth using cron to backup the > /usr and / ). > isn't 1gb of ram enuth for KDE + OpenOffice?
Unless it won't fit in 3GB. # du -s -h /usr 6.1G /usr See, there's a reason why people don't do what you are proposing: it's not an efficient use of RAM. Let Linux do it's job and manage the memory; it's very good at it's job. BTW, why do you need 4GB RAM? Geek status (I did the same 3 years ago with 1GB RAM) or some specific reason? > On 8/17/06, Roberto C. Sanchez <[EMAIL PROTECTED]> wrote: >> >> On Thu, Aug 17, 2006 at 10:51:12PM +0200, Jabka Atu wrote: >> > Hello.. >> > im going to buy a new pc with 4gb ram . >> > id like to run whole system from ram : >> > at boot that files will be cpd to ram disk and then the kernal will >> load >> > from ramdisk : >> > sevrel Question : >> > can i some how change loaded kernal path : >> > after boot remount it from other place. >> > will Kde (or Xfce ) run faster if i run it from mem? (no read/write >> > needed time). >> > >> >> I don't mean to be negative, but your scheme makes little sense. The >> *only* thing that you will accomplish by running from RAM is that >> read/write times will be reduced. Now, you can't do this for all writes >> since you really need pretty much all of /var on disk so that a system >> or power failure does not completely trash every bit of your system >> state. Additionally, in the grand scheme things, you read from disk >> much more often that you write. You generally only write when some >> state is being saved to disk or when you save a file. Beyond that, >> nearly every other interaction with disk is loading programs, libraries >> or other files into memory. >> >> The Linux kernel has a very good memory manager. When you first start >> up your machine things like KDE and OpenOffice will probably take a bit >> of time to load. Now, if you leave your machine running all the time, >> then Linux will keep everything cached in memory. Since you generally >> only use a small percentage of what is installed on your system this >> works out quite well. >> >> What you want to do is give up much of your very fast RAM (I am guessing >> around 3 GB) to store your / and /usr at least) so that when you go to >> use something is quickly transfered from one part of RAM to another. Of >> course, you will now have much less RAM and Linux will spend time >> clearing out things from the remaining 1 GB to make room for other >> things that are loaded. Then the images for the new programs and >> libraries must be transferred back and forth. I would argue that you >> would lose overall performance. - -- Ron Johnson, Jr. Jefferson LA USA Is "common sense" really valid? For example, it is "common sense" to white-power racists that whites are superior to blacks, and that those with brown skins are mud people. However, that "common sense" is obviously wrong. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFE5g3TS9HxQb37XmcRAjpkAJwKILg0GmNX3Sy4vVpIZaSdmyY+lACbBf3L NTxo//08Za8c8ci0JQSyT3k= =gd/h -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
