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发表于 2007-7-16 14:46:44
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既然跑题了,再说些八卦新闻吧。在wiki上查了一下reiserfs,下面是其中的两段。另外wiki上也说了reiserfs为什么终止开发了,因为和作者Reiser闹离婚的妻子失踪了,Reiser已经被警方拘留了,这也是为什么suse转向ext3的原因。
Performance
Compared to ext2 and ext3 in version 2.4 of the Linux kernel, when dealing with files under 4 KiB and with tail packing enabled, ReiserFS is often faster by a factor of 10–15.[citation needed] This is of great benefit in Usenet news spools, HTTP caches, mail delivery systems and other applications where performance with small files is critical.
[edit] Criticism
Some directory operations (including unlink(2)) are not synchronous on ReiserFS, which can result in data corruption with applications relying heavily on file-based locks (such as mail transfer agents qmail[4] and Postfix[5]) if the machine halts before it has synchronized the disk.[6]
There are no programs to specifically defragment a ReiserFS file system, although tools have been written to automatically copy the contents of fragmented files hoping that more contiguous blocks of free space can be found. However, Reiser4 will have a repacker that optimizes file fragmentation.[7] |
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