Compression Library and Usages
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From: "Kevin Grittner" on 11 Jan 2010 16:18 Dimitri Fontaine <dfontaine(a)hi-media.com> wrote: > The topic came on IRC and it might be that the later attempts at > using another library missed one of the offering, namely FastLZ. > It's made for being quick rather than minimize size, it's MIT > licenced, 551 lines of portable ansi-C code, already tested on a > host of systems and compilers. Are the concerns from previous discussions off-base? http://archives.postgresql.org/pgsql-performance/2009-08/msg00053.php -Kevin -- Sent via pgsql-hackers mailing list (pgsql-hackers(a)postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
From: Dimitri Fontaine on 11 Jan 2010 16:23 "Kevin Grittner" <Kevin.Grittner(a)wicourts.gov> writes: > Are the concerns from previous discussions off-base? > > http://archives.postgresql.org/pgsql-performance/2009-08/msg00053.php I knew I was forgetting about something, thanks for the reminder. Damn it, patents. -- dim -- Sent via pgsql-hackers mailing list (pgsql-hackers(a)postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
From: "Kevin Grittner" on 11 Jan 2010 17:25 Dimitri Fontaine <dfontaine(a)hi-media.com> wrote: >> http://archives.postgresql.org/pgsql-performance/2009-08/msg00053.php > > I knew I was forgetting about something, thanks for the reminder. > Damn it, patents. I'm not sure that there was anything there which absolutely ruled out using LZ0; all of the patents still in effect seemed to be around picky little details of *how* you use it. Others seem to have picked their way through that particular mine field. -Kevin -- Sent via pgsql-hackers mailing list (pgsql-hackers(a)postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
From: Merlin Moncure on 11 Jan 2010 19:44 On Mon, Jan 11, 2010 at 5:25 PM, Kevin Grittner <Kevin.Grittner(a)wicourts.gov> wrote: > Dimitri Fontaine <dfontaine(a)hi-media.com> wrote: > >>> > http://archives.postgresql.org/pgsql-performance/2009-08/msg00053.php >> >> I knew I was forgetting about something, thanks for the reminder. >> Damn it, patents. > > I'm not sure that there was anything there which absolutely ruled > out using LZ0; all of the patents still in effect seemed to be > around picky little details of *how* you use it. Others seem to > have picked their way through that particular mine field. plus, it looks like that most of the patents have either expired, or are about to expire. lzo is used all over the place, including the linux kernel...i think the burden of proof rests with anyone claiming there are patent problems, not the other way around. lzo is also gpl so we can't use it :D. regarding fastlz and patents, who knows? I'm curious...does anyone know of a case where a high profile open source project was found to be violating a patent? merlin -- Sent via pgsql-hackers mailing list (pgsql-hackers(a)postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
From: Tom Lane on 11 Jan 2010 19:54 Merlin Moncure <mmoncure(a)gmail.com> writes: > plus, it looks like that most of the patents have either expired, or > are about to expire. lzo is used all over the place, including the > linux kernel...i think the burden of proof rests with anyone claiming > there are patent problems, not the other way around. lzo is also gpl > so we can't use it :D. regarding fastlz and patents, who knows? I'm > curious...does anyone know of a case where a high profile open source > project was found to be violating a patent? You have got that 100% backwards. We are not going to bet the survival of the Postgres project on whether we can get away with violating somebody's patent. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers(a)postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
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