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 clarified: IIUC, *all* contemporary versions of PostgreSQL do use SHM for shatrd buffers (as PgSQL use process-per-connection model) > 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. On the other hand, I also do not see anything that could change benchmarks significally -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: ma...@freebsd.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- ma...@rinet.ru *** ------------------------------------------------------------------------ _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
