[ILUG] Reiserfs storage efficiency
drjolt+ilug at redbrick.dcu.ie
Sat Dec 30 18:14:06 GMT 2000
Quoting <20001230151011.A27502 at blackstar.co.uk>
by Wesley Darlington <wesley at blackstar.co.uk>:
> As reasons go, that's a good'un. How does find|cpio compare
> speedwise to cp? About the same, are they?
Dunno - I don't have any Linux machines handy.
> On a related note, I sometimes use cp to backup big oft-changed
> files to places whence I can copy them to tape at leisure. It
> irritates me (only slightly) that copying in the old files floods
> the file cache, and writing the new files out floods the buffer (*).
> I'd like to be able to (i) not flood the cache on read-in, if
> possible and, much more importantly, (ii) not flood the buffer on
> write-out. Anybody got any thoughts on how this might be
> accomplished? Something to do with rawio, or something?
Raw or direct I/O is what you're looking for, all right, but I don't
know if or how it's done on Linux.
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