Date: Sat, 21 Mar 2015 23:08:10 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: Mark Linimon <linimon@lonesome.com> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r280323 - head/sys/kern Message-ID: <20150321210810.GT2379@kib.kiev.ua> In-Reply-To: <20150321210341.GC15857@lonesome.com> References: <201503211501.t2LF1Kj8052521@svn.freebsd.org> <20150321210341.GC15857@lonesome.com>
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On Sat, Mar 21, 2015 at 04:03:41PM -0500, Mark Linimon wrote: > On Sat, Mar 21, 2015 at 03:01:20PM +0000, 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. But note that the code changed only works during shared segment creation and teardown. Page faults are handled by the same VM code as it was before. In other words, I expect that nothing changes WRT benchmarks.
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