Re: [HACKERS] SYSV shared memory vs mmap performance

2013-02-05 Thread YAMAMOTO Takashi
hi, > Hi, > > On Mon, Jan 28, 2013 at 03:27:28PM +, YAMAMOTO Takashi wrote: >> >> can you give me a pointer? > > This bug report for a start: > http://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=46833 thanks! YAMAMOTO Takashi > > This is the only one I've filled; I also remember

Re: [HACKERS] SYSV shared memory vs mmap performance

2013-01-28 Thread Francois Tigeot
Hi, On Mon, Jan 28, 2013 at 03:27:28PM +, YAMAMOTO Takashi wrote: > > can you give me a pointer? This bug report for a start: http://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=46833 This is the only one I've filled; I also remember having irc discussions with some netbsd developers

Re: [HACKERS] SYSV shared memory vs mmap performance

2013-01-28 Thread YAMAMOTO Takashi
hi, > I'm less optimistic on the NetBSD front: even though I reported major > show-stopper bugs (system died under load and was unable to complete > a pgbench run), no one seemed to care. can you give me a pointer? YAMAMOTO Takashi -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgre

Re: [HACKERS] SYSV shared memory vs mmap performance

2013-01-26 Thread Robert Haas
On Sat, Jan 26, 2013 at 7:00 AM, Francois Tigeot wrote: > On Fri, Jan 25, 2013 at 05:55:19PM -0500, Robert Haas wrote: >> On Fri, Jan 25, 2013 at 9:38 AM, Francois Tigeot >> wrote: >> > >> > Some links with more details about improvements and final results: >> > http://www.shiningsilence.com/dbs

Re: [HACKERS] SYSV shared memory vs mmap performance

2013-01-26 Thread Francois Tigeot
On Fri, Jan 25, 2013 at 05:55:19PM -0500, Robert Haas wrote: > On Fri, Jan 25, 2013 at 9:38 AM, Francois Tigeot wrote: > > > > Some links with more details about improvements and final results: > > http://www.shiningsilence.com/dbsdlog/2012/09/19/10403.html > > http://www.shiningsilence.com/dbsdlo

Re: [HACKERS] SYSV shared memory vs mmap performance

2013-01-25 Thread Robert Haas
On Fri, Jan 25, 2013 at 9:38 AM, Francois Tigeot wrote: >> On Fri, Jan 25, 2013 at 8:40 AM, Bruce Momjian >> wrote: >>> >>> Just a reminder we might have *BSD performance issues with our use >>> of Posix shared memory in Postgres 9.3. I am attaching the PDF the >>> user posted. >> >> This is a g

Re: [HACKERS] SYSV shared memory vs mmap performance

2013-01-25 Thread Francois Tigeot
Hi, Robert Haas wrote: On Fri, Jan 25, 2013 at 8:40 AM, Bruce Momjian wrote: Just a reminder we might have *BSD performance issues with our use of Posix shared memory in Postgres 9.3. I am attaching the PDF the user posted. This is a good point. The question which I believe I asked before

Re: [HACKERS] SYSV shared memory vs mmap performance

2013-01-25 Thread Bruce Momjian
On Fri, Jan 25, 2013 at 08:47:51AM -0500, Robert Haas wrote: > On Fri, Jan 25, 2013 at 8:40 AM, Bruce Momjian wrote: > > Just a reminder we might have *BSD performance issues with our use of > > Posix shared memory in Postgres 9.3. I am attaching the PDF the user > > posted. > > This is a good p

Re: [HACKERS] SYSV shared memory vs mmap performance

2013-01-25 Thread Robert Haas
On Fri, Jan 25, 2013 at 8:40 AM, Bruce Momjian wrote: > Just a reminder we might have *BSD performance issues with our use of > Posix shared memory in Postgres 9.3. I am attaching the PDF the user > posted. This is a good point. The question which I believe I asked before and haven't gotten an