On Mar 22, 2015 5:11 AM, "Dmitry Morozovsky" wrote:
>
> On Sat, 21 Mar 2015, Konstantin Belousov wrote:
>
> > > > > > Somewhat modernize the SysV shm code:
> > > > >
> > > > > Is my understanding correct that postgres still uses shm? If so,
> > > > > has someone benchmarked the speedup?
> > > >
On Sat, 21 Mar 2015, Konstantin Belousov wrote:
> > > > > Somewhat modernize the SysV shm code:
> > > >
> > > > Is my understanding correct that postgres still uses shm? If so,
> > > > has someone benchmarked the speedup?
> > >
> > > Yes, some versions of Postgres still use SysV shm.
> >
>
On Sun, Mar 22, 2015 at 12:16:22AM +0300, Dmitry Morozovsky wrote:
> On Sat, 21 Mar 2015, Konstantin Belousov wrote:
>
> > > > Somewhat modernize the SysV shm code:
> > >
> > > Interesting.
> > >
> > > Is my understanding correct that postgres still uses shm? If so,
> > > has someone benchmar
On Sat, 21 Mar 2015, Konstantin Belousov wrote:
> > > Somewhat modernize the SysV shm code:
> >
> > Interesting.
> >
> > Is my understanding correct that postgres still uses shm? If so,
> > has someone benchmarked the speedup?
>
> Yes, some versions of Postgres still use SysV shm.
To be c
On Sat, Mar 21, 2015 at 04:03:41PM -0500, Mark Linimon wrote:
> On Sat, Mar 21, 2015 at 03:01:20PM +, Konstantin Belousov wrote:
> > Somewhat modernize the SysV shm code:
>
> Interesting.
>
> Is my understanding correct that postgres still uses shm? If so,
> has someone benchmarked the spe
On Sat, Mar 21, 2015 at 03:01:20PM +, Konstantin Belousov wrote:
> Somewhat modernize the SysV shm code:
Interesting.
Is my understanding correct that postgres still uses shm? If so,
has someone benchmarked the speedup?
mcl
___
svn-src-head@free
Author: kib
Date: Sat Mar 21 15:01:19 2015
New Revision: 280323
URL: https://svnweb.freebsd.org/changeset/base/280323
Log:
Somewhat modernize the SysV shm code:
- Use real locking, replace Giant with global sx protecting the
subsystem. Since the subsystem' lock is no longer dropped during
