Re: [zfs-discuss] LZO versus LZJB

2009-08-14 Thread Richard Elling
On Aug 14, 2009, at 7:15 AM, Alex Lam S.L. wrote: Thanks for the informative analysis! Just wondering - are there better candidates out there than even LZO for this purpose? tamp is perhaps another interesting candidate. But Tim is in a better position to say where it is heading. http://blogs

Re: [zfs-discuss] LZO versus LZJB

2009-08-14 Thread Jeb Campbell
The only problem I see, is data set size. Let me explain (and please correct if I'm wrong). ZFS basically compresses 2 things -- metadata and data. And data is at most 128k chunk. Each chunk is individually compressed, not the whole file. This should affect dictionary size for the lzo compre

Re: [zfs-discuss] LZO versus LZJB

2009-08-14 Thread Alex Lam S.L.
Just to answer my own question - this one might be interesting: http://www.quicklz.com/ Alex. On Fri, Aug 14, 2009 at 3:15 PM, Alex Lam S.L. wrote: > Thanks for the informative analysis! > > Just wondering - are there better candidates out there than even LZO > for this purpose? > > Alex. > > >

Re: [zfs-discuss] LZO versus LZJB

2009-08-14 Thread Alex Lam S.L.
Thanks for the informative analysis! Just wondering - are there better candidates out there than even LZO for this purpose? Alex. On Fri, Aug 14, 2009 at 8:05 AM, Denis Ahrens wrote: > Hi > > Some developers here said a long time ago that someone should show > the code for LZO compression suppo

Re: [zfs-discuss] LZO versus LZJB

2009-08-14 Thread Fajar A. Nugraha
On Fri, Aug 14, 2009 at 2:05 PM, Denis Ahrens wrote: > Some developers here said a long time ago that someone should show > the code for LZO compression support for ZFS before talking about the > next step. Isn't the main problem license, LZO being GPL, while zfs CDDL? -- Fajar _

Re: [zfs-discuss] LZO versus LZJB

2009-08-14 Thread Thomas Burgess
Great read. On Fri, Aug 14, 2009 at 3:05 AM, Denis Ahrens wrote: > Hi > > Some developers here said a long time ago that someone should show > the code for LZO compression support for ZFS before talking about the > next step. I made that code with a friend and we also made a little > benchmark to

[zfs-discuss] LZO versus LZJB

2009-08-14 Thread Denis Ahrens
Hi Some developers here said a long time ago that someone should show the code for LZO compression support for ZFS before talking about the next step. I made that code with a friend and we also made a little benchmark to give a first impression: http://denisy.dyndns.org/lzo_vs_lzjb/ I hope we ma