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is defragment necessary, the non-contiguous has become 3.5 %
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padoor
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PostPosted: Mon Feb 20, 2006 6:26 am    Post subject: is defragment necessary, the non-contiguous has become 3.5 % Reply with quote

evry time the filesystem check reports more fragmentation.
now it 3.5 %
do we do defragment how?
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codergeek42
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PostPosted: Mon Feb 20, 2006 6:34 am    Post subject: Reply with quote

It shouldn't be necessary. While the filesystem will get fragmented over time, the way that the kernel and filesystem handle it means that the harmful effects such fragmentation can have on the system's performance are neglible. It's only once the filesystem becomes near-full (probably >90% or so) that such fragmentation can cause performance issues.
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padoor
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PostPosted: Mon Feb 20, 2006 6:51 am    Post subject: Reply with quote

thanks for the information.
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tboloo
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PostPosted: Mon Feb 20, 2006 9:26 am    Post subject: Reply with quote

You may try http://ck.kolivas.org/apps/defrag/ from Con Kolivas' page. It worked for me.
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sundialsvc4
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PostPosted: Tue Feb 21, 2006 6:01 pm    Post subject: Reply with quote

As far as I am aware, fragmentation of a filesystem should be of no concern in any Linux/Unix filesystem, and it should no longer be a concern with Windows NTFS.

A certain amount of fragmentation is normal. It depends on exactly how the file system is being used, from one moment to the next ... how large the files are, how volatile they are, what sorts of applications are running, and so-on. The amount of fragmented space will routinely hover in the small-percentages. Should the disk drive become quite full, of course, the filesystem has fewer options available to it for space-allocation and it's entirely to be expected that the fragmentation might worsen.

If you store "thousands of small files," as many of us do, you may wish to consider alternate filesystems such as ReiserFS which are targeted for this kind of workload. While it is not my purpose here to open any sort of debate as to the relative merits of one filesystem over another, I do wish to point out that not every filesystem approaches its task in the same way.
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nixnut
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PostPosted: Tue Feb 21, 2006 6:07 pm    Post subject: Reply with quote

Moved from Installing Gentoo to Duplicate Threads.
Not an installation problem.

And a dupe too. See here please
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