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Alan McKinnon schrieb: |
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[...] |
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> Reiser tends to self-balance itself out. What is especially noteworthy is that |
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> none of the general purpose Linux filesystems provide a defrag utility. |
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> Theodore 'Tso and Hans Reiser are both exceptional programmers, if there was |
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> a need for such a tool they would assuredly have written one. They did not, |
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> so there probably isn't. |
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> |
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[...] |
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Well, as far as I know, ext4 will get an online defrag tool. |
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I once experienced performance losses on a reiserfs-volume used for |
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ccache (tailpacking enabled). |
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But otherwise you are right, fragmentation is usually caused by a bad |
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filesystem (FAT*), a filesystem that is mostly filled (when 99% is full, |
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the allocator has no choice but scatter any new writes over the whole |
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volume) or unusual usage patterns (write-delete-write-delete-... like my |
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ccache issue). |
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