Date: Sun, 21 Apr 2013 23:49:25 +0200 From: Baptiste Daroussin <bapt@FreeBSD.org> To: pkg@freebsd.org Subject: Re: DragonFly 3.3 performance improvements Message-ID: <20130421214925.GF38955@ithaqua.etoilebsd.net> In-Reply-To: <20130421214607.GA84673@sekishi.zefyris.com> References: <20130421214607.GA84673@sekishi.zefyris.com>
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[-- Attachment #1 --] On Sun, Apr 21, 2013 at 11:46:07PM +0200, Francois Tigeot wrote: > Hi, > > One of the main differences between Dragonfly-3.2 and the future 3.4 > release is the use of DPorts and binary Pkgng packages. > The packages are mass-produced by Poudriere, a tool making so heavy > use of IO and CPU resources and exercising so heavily some operating > system functions it showed major stability and performance issues on > machines which had otherwise been running perfectly fine for months. > > These issues were fixed during the DragonFly 3.3 development cycle; I > have run a few benchmarks to show the resulting performance improvements. > > In the first attached document, Poudriere itself was used to compare > performance between December 2012 and March 2013 DragonFly 3.3 kernels; > besides beeing a wonderful package building tool, it's also a pretty good > for measuring multiprocessing scalability. > DragonFly 3.2 itself couldn't be used due to missing DPorts support. > For all intent and purposes, the late 3.3 kernel improvements will be > present in DragonFly 3.4. > > A good part of the performance improvements shown in the first document > was due to changes made to the tmpfs subsystem; the second file contains > results from a quick sysbench file IO/tmpfs test on DragonFly 3.2 and > the March DragonFly kernel. > I did ask François to send this mail to pkg@ so in particular for the poudriere tuning part, because it is imho very useful for FreeBSD either. regards, Bapt [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlF0XuUACgkQ8kTtMUmk6EzqSwCfVx5dUb31qcMtnqYbvv3R+YLS zqAAmgNkRtlyT0iAjteb1qy18su79liw =eGAl -----END PGP SIGNATURE-----
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