On 2018-Jul-19, Amit Kapila wrote: > On Thu, Feb 22, 2018 at 7:55 PM, Robert Haas <robertmh...@gmail.com> wrote: > > On Wed, Feb 21, 2018 at 10:03 PM, Mithun Cy <mithun...@enterprisedb.com> > > wrote: > >> seeing futex in the call stack andres suggested that following commit could > >> be the reason for regression > >> > >> commit ecb0d20a9d2e09b7112d3b192047f711f9ff7e59 > >> Author: Tom Lane <t...@sss.pgh.pa.us> > >> Date: 2016-10-09 18:03:45 -0400 > >> > >> Use unnamed POSIX semaphores, if available, on Linux and FreeBSD.
> > Hmm. So that commit might not have been the greatest idea. > > It appears so. I think we should do something about it as the > regression is quite noticeable. So the fix is just to revert the change for the linux makefile? Sounds easy enough, code-wise. Do we need more evidence that it's harmful? Since it was changed in pg10 not 11, I don't think this is an open-item per se. (Maybe an "older bug", if we must really have it there.) -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
