Date: Sat, 25 Apr 2009 02:30:00 +0400 From: Stanislav Sedov <stas@FreeBSD.org> To: rea-fbsd@codelabs.ru Cc: x11@freebsd.org, obrien@freebsd.org, bug-followup@freebsd.org, miwi@FreeBSD.org Subject: Re: ports/132615: [patch] x11/libX11: work aroung parsing bug in Bash 4.0 Message-ID: <20090425023000.7466392f.stas@FreeBSD.org> In-Reply-To: <3vHRxK8zyisyJx9ZrK67n180LIY@veJXoSoJtqjaE%2Bn2qYrh3k99%2BAQ> References: <200903140956.n2E9uJ9G049103@freefall.freebsd.org> <CNRvQuQsWjPceEprCAhye6Gtlm4@gaXtT4o8WV/C0Q%2BqaYA3hARX3do> <3vHRxK8zyisyJx9ZrK67n180LIY@veJXoSoJtqjaE%2Bn2qYrh3k99%2BAQ>
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On Sat, 25 Apr 2009 00:03:20 +0400 Eygene Ryabinkin <rea-fbsd@codelabs.ru> mentioned: > Gentlemen, good day. > > Sun, Mar 15, 2009 at 10:20:17AM +0300, Eygene Ryabinkin wrote: > > I had researched on the DOLT a little bit more and found that > > doltcompile greatly speeds up the compilation process, because it was > > written precisely for this purpose: > > http://lists.debian.org/debian-devel/2008/04/msg00286.html > > > > So, I would say that it's better to patch the doltcompile script itself > > rather than to drop support for it. > > I had made some measurements for non-DOLT and DOLT case for the > current libX11 case. Here are the results of ministat spawned > for data from 10 compilation cycles with DOLT and without DOLT: > (fully warmed disk cache, almost zero activity on the machine, > all resources are dedicated to the port building): > ----- > x noDOLT.real > + withDOLT.real > +------------------------------------------------------------------------------+ > | ++ | > | ++ x | > | +++++ + x xxx xx xxx| > ||______M_A_________| |___A____| | > +------------------------------------------------------------------------------+ > N Min Max Median Avg Stddev > x 10 177.48 189.25 184.365 184.366 3.5870173 > + 10 135.01 159.06 137.345 139.211 7.0399976 > Difference at 95.0% confidence > -45.155 +/- 5.24948 > -24.492% +/- 2.84732% > (Student's t, pooled s = 5.58696) > ----- > I'd say that 45 seconds (24.5%) speedup worth some patching. > > Any thoughts 'bout this? I think we could try to replace the libtool by our own stripped-down implementation that will be even simpler than dolt. If dolt is able to reduce the compilations speed by about one forth, then with a FreeBSD specific libtool replacement the imporvement may be even better. As a benefit we can also stop installing .la and .a library files. -- Stanislav Sedov ST4096-RIPE !DSPAM:49f23d69967001517610879!
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