> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Jim Klimov
>
> this is
> the part I am not certain about - it is roughly as cheap to READ the
> gzip-9 datasets as it is to read lzjb (in terms of CPU decompression).
Nope. I know LZJB is not
Edward Ned Harvey (opensolarisisdeadlongliveopensolaris) wrote:
There are very few situations where (gzip) option is better than the
default lzjb.
Well, for the most part my question regarded the slowness (or lack of)
gzip DEcompression as compared to lz* algorithms. If there are files
and data
Edward Ned Harvey (opensolarisisdeadlongliveopensolaris) wrote:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Jim Klimov
I really hope someone better versed in compression - like Saso -
would chime in to say whether gzip-9 vs. lzjb (or lz4)
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Jim Klimov
>
> I really hope someone better versed in compression - like Saso -
> would chime in to say whether gzip-9 vs. lzjb (or lz4) sucks in
> terms of read-speeds from the pools. My HDD-b
On Tue, Nov 27, 2012 at 5:13 AM, Eugen Leitl wrote:
> Now there are multiple configurations for this.
> Some using Linux (roof fs on a RAID10, /home on
> RAID 1) or zfs. Now zfs on Linux probably wouldn't
> do hybrid zfs pools (would it?)
Sure it does. You can even use the whole disk as zfs, with
Now that I thought of it some more, a follow-up is due on my advices:
1) While the best practices do(did) dictate to set up zoneroots in
rpool, this is certainly not required - and I maintain lots of
systems which store zones in separate data pools. This minimizes
write-impact on rpools
Performance-wise, I think you should go for mirrors/raid10, and
separate the pools (i.e. rpool mirror on SSD and data mirror on
HDDs). If you have 4 SSDs, you might mirror the other couple for
zoneroots or some databases in datasets delegated into zones,
for example. Don't use dedup. Carve out som
On Tue, Nov 27, 2012 at 12:12:43PM +, Edward Ned Harvey
(opensolarisisdeadlongliveopensolaris) wrote:
> > From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> > boun...@opensolaris.org] On Behalf Of Eugen Leitl
> >
> > can I make e.g. LSI SAS3442E
> > directly do SSD caching (it s
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Eugen Leitl
>
> can I make e.g. LSI SAS3442E
> directly do SSD caching (it says something about CacheCade,
> but I'm not sure it's an OS-side driver thing), as it
> is supposed to boost IOPS? U
