Le 22 oct. 08 à 21:02, Bill Sommerfeld a écrit :
On Wed, 2008-10-22 at 09:46 -0700, Mika Borner wrote:
If I turn zfs compression on, does the recordsize influence the
compressratio in anyway?
zfs conceptually chops the data into recordsize chunks, then
compresses
each chunk
Leave the default recordsize. With 128K recordsize,
files smaller than
If I turn zfs compression on, does the recordsize influence the compressratio
in anyway?
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On Wed, 22 Oct 2008, Mika Borner wrote:
Leave the default recordsize. With 128K recordsize,
files smaller than
If I turn zfs compression on, does the recordsize influence the
compressratio in anyway?
Yes, I believe so. ZFS is not going to try to compress a chunk of
data larger than the
On Tue, Oct 21, 2008 at 05:50:09AM -0700, Marcelo Leal wrote:
If i have many small files (smaller than 128K), i would not waste
time reading 128K? And after the ZFS has allocated a FSB of 64K for
example, if that file gets bigger, ZFS will use 64K blocks right?
ZFS uses the smallest
On Wed, 2008-10-22 at 09:46 -0700, Mika Borner wrote:
If I turn zfs compression on, does the recordsize influence the
compressratio in anyway?
zfs conceptually chops the data into recordsize chunks, then compresses
each chunk independently, allocating on disk only the space needed to
store each
Hello Roch!
Leave the default recordsize. With 128K recordsize,
files smaller than
128K are stored as single record
tightly fitted to the smallest possible # of disk
sectors. Reads and
writes are then managed with fewer ops.
In the write ZFS is dynamic, but in the read?
If i have
On 18-Oct-08, at 12:46 AM, Roch Bourbonnais wrote:
Leave the default recordsize. With 128K recordsize, files smaller than
128K are stored as single record
tightly fitted to the smallest possible # of disk sectors. Reads and
writes are then managed with fewer ops.
Not tuning the recordsize
Leave the default recordsize. With 128K recordsize, files smaller than
128K are stored as single record
tightly fitted to the smallest possible # of disk sectors. Reads and
writes are then managed with fewer ops.
Not tuning the recordsize is very generally more space efficient and
more
Hi,
It is important to remember that ZFS is ideal for writing new files from
scratch.
IIRC, maildir MTAs never overwrite mail files. But courier-imap does maintain
some additional index files which will be overwritten and I guess other IMAP
servers will probably do the same.
Nils
