Re: [newbie] defragmentation
[EMAIL PROTECTED] wrote: No, but it would be very usefull if the most experienced ppl on this mail list would give us an explanation or some usefull links on this matter, why ext doesn`t need defragmentation ... Thanks in advance for your understanding. It's very simple, and not exclusive to Linux - it goes back to the early days of Unix. The best way to think of it is that your filesystem is one of those folders that has a separate plastic envelope for each page. Imagine you're a secretary who has to store documents in such a folder. To start off, you put in the first document at the beginning, then the second document after it, and so on. The difference comes when you bin some documents (delete files). If you're a Unix/Linux secretary, and you have a ten-page document, you look for the first empty space in the folder that has at least ten envelopes and put your document there. If you're a Windows secretary, you start filing the document in the first empty space you find, even if it only has three envelopes. You then look for another empty space, and file the next few pages of your document, and so on. Eventually, the documents in your foder are so spread out and mixed up that you have to take them all out and put them back in some kind of order (defragmentation). Stupid, isn't it? Sir Robin -- Some guy breaking into a government computer system and wreaking havoc makes for a more interesting movie plot than some guy writing device drivers. It's hard to work in a good 10-minutes car chase scene with some guy who writes device drivers... - tjc, post to LWN Robin Turner IDMYO Bilkent Univeritesi Ankara 06533 Turkey www.bilkent.edu.tr/~robin Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
Re: [newbie] defragmentation
Sir Robin, Excelent explanation, me and the other newbies (i`m sure of it) we thank you for it, i finally understood fragmentation process in windows and unix/linux file system. Thank you again ! Regards from newArTs. - Original Message - From: Robin Turner [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, June 29, 2003 2:56 AM Subject: Re: [newbie] defragmentation [EMAIL PROTECTED] wrote: No, but it would be very usefull if the most experienced ppl on this mail list would give us an explanation or some usefull links on this matter, why ext doesn`t need defragmentation ... Thanks in advance for your understanding. It's very simple, and not exclusive to Linux - it goes back to the early days of Unix. The best way to think of it is that your filesystem is one of those folders that has a separate plastic envelope for each page. Imagine you're a secretary who has to store documents in such a folder. To start off, you put in the first document at the beginning, then the second document after it, and so on. The difference comes when you bin some documents (delete files). If you're a Unix/Linux secretary, and you have a ten-page document, you look for the first empty space in the folder that has at least ten envelopes and put your document there. If you're a Windows secretary, you start filing the document in the first empty space you find, even if it only has three envelopes. You then look for another empty space, and file the next few pages of your document, and so on. Eventually, the documents in your foder are so spread out and mixed up that you have to take them all out and put them back in some kind of order (defragmentation). Stupid, isn't it? Sir Robin -- Some guy breaking into a government computer system and wreaking havoc makes for a more interesting movie plot than some guy writing device drivers. It's hard to work in a good 10-minutes car chase scene with some guy who writes device drivers... - tjc, post to LWN Robin Turner IDMYO Bilkent Univeritesi Ankara 06533 Turkey www.bilkent.edu.tr/~robin Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
Re: [newbie] defragmentation
to clarify the point abit, relating to Sir Robin's post below and David E Fox's post with the link to the Suse explanation, is it fair to start of by saying that ext2/3 does not need file defragmentation, as the expense of disk fragmentation? due to the way it grabs free space, there will always be lotsa empty space between files, while (for example) say a 50% used disk with majority small files can concievably use up to 90% or more of the disc surface. doesn't this increase the seek time, since the head has to move across the entire radius of the disc? - Original Message - From: Robin Turner [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, June 29, 2003 2:56 AM Subject: Re: [newbie] defragmentation It's very simple, and not exclusive to Linux - it goes back to the early days of Unix. The best way to think of it is that your filesystem is one of those folders that has a separate plastic envelope for each page. Imagine you're a secretary who has to store documents in such a folder. To start off, you put in the first document at the beginning, then the second document after it, and so on. The difference comes when you bin some documents (delete files). If you're a Unix/Linux secretary, and you have a ten-page document, you look for the first empty space in the folder that has at least ten envelopes and put your document there. If you're a Windows secretary, you start filing the document in the first empty space you find, even if it only has three envelopes. You then look for another empty space, and file the next few pages of your document, and so on. Eventually, the documents in your foder are so spread out and mixed up that you have to take them all out and put them back in some kind of order (defragmentation). Stupid, isn't it? Sir Robin -- Some guy breaking into a government computer system and wreaking havoc makes for a more interesting movie plot than some guy writing device drivers. It's hard to work in a good 10-minutes car chase scene with some guy who writes device drivers... - tjc, post to LWN Robin Turner IDMYO Bilkent Univeritesi Ankara 06533 Turkey www.bilkent.edu.tr/~robin Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
Re: [newbie] defragmentation
does linux need to be defragmented ? No. Linux uses filesystems that are very fragmentation resistant, for various degrees of 'very'. Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
Re: [newbie] defragmentation
No, but it would be very usefull if the most experienced ppl on this mail list would give us an explanation or some usefull links on this matter, why ext doesn`t need defragmentation ... Thanks in advance for your understanding. Regards from newArTs. - Original Message - From: Tsyko [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, June 28, 2003 11:39 PM Subject: [newbie] defragmentation Ok you can all laugh now... does linux need to be defragmented ? Tsyko Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
Re: [newbie] defragmentation
On Sat, 2003-06-28 at 22:39, Tsyko wrote: Ok you can all laugh now... Okay, if it humors you: laugh laugh ;) does linux need to be defragmented ? Nope. EXT2 etc. take care of that themselves, since the 'Linux' approach of storing files is different from the way M$-dos does this. Paul -- Thou shalt not get physically involved with the computer system, especially if you're already married. http://nlpagan.net - Linux Mandrake - Ximian Evolution Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
Re: [newbie] defragmentation
Another good reason why linux rocks... This is da bomb On Saturday, 28 June 2003 18:50, Paul wrote: On Sat, 2003-06-28 at 22:39, Tsyko wrote: Ok you can all laugh now... Okay, if it humors you: laugh laugh ;) does linux need to be defragmented ? Nope. EXT2 etc. take care of that themselves, since the 'Linux' approach of storing files is different from the way M$-dos does this. Paul Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
RE: [newbie] defragmentation
not unless you use JFS filesystem... and don't do that cos SCO will sue your ass, as its one of the things they claim IBM stole and gave to linux. rgds Franki -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Tsyko Sent: Sunday, 29 June 2003 4:40 AM To: [EMAIL PROTECTED] Subject: [newbie] defragmentation Ok you can all laugh now... does linux need to be defragmented ? Tsyko Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
Re: [newbie] defragmentation
No, but it would be very usefull if the most experienced ppl on this mail list would give us an explanation or some usefull links on this matter, why ext Well, google for ext2 and fragmentation. Among the more detailed items is one from Suse - http://sdb.suse.de/en/sdb/html/ext2frag.html. Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
