Date: Mon, 9 Feb 2015 12:30:57 +0000 From: Glen Barber <gjb@FreeBSD.org> To: Rui Paulo <rpaulo@FreeBSD.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r278433 - in head: . contrib/xz contrib/xz/src/common contrib/xz/src/liblzma contrib/xz/src/liblzma/api contrib/xz/src/liblzma/api/lzma contrib/xz/src/liblzma/check contrib/xz/src/liblz... Message-ID: <20150209123057.GF84467@hub.FreeBSD.org> In-Reply-To: <20150209122540.GE84467@hub.FreeBSD.org> References: <201502090620.t196KZSk040702@svn.freebsd.org> <20150209122540.GE84467@hub.FreeBSD.org>
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--GxcwvYAGnODwn7V8 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Feb 09, 2015 at 12:25:40PM +0000, Glen Barber wrote: > On Mon, Feb 09, 2015 at 06:20:35AM +0000, Rui Paulo wrote: > > Author: rpaulo > > Date: Mon Feb 9 06:20:34 2015 > > New Revision: 278433 > > URL: https://svnweb.freebsd.org/changeset/base/278433 > >=20 > > Log: > > Merge xz 5.2.0. > > =20 > > This brings support for multi-threaded compression. This brings close > > N times faster compression where N is the number of CPU cores. > > Because of this, liblzma now depends on libthr. > > =20 >=20 > This is fantastic, thank you for doing this update. >=20 > FWIW, compressing VM images (some sparse files, some not) would take > upwards of 45 minutes, which after this update, just takes a few > minutes. >=20 > root@releng2:/R2/vmimages # time xz -T 0 -k FreeBSD-11.0-CURRENT-amd64.q= cow2 \ > time xz -T 0 -k FreeBSD-11.0-CURRENT-amd64.raw; \ > time xz -T 0 -k FreeBSD-11.0-CURRENT-amd64.vhd; \ > time xz -T 0 -k FreeBSD-11.0-CURRENT-amd64.vmdk > 1027.602u 40.376s 1:09.57 1535.1% 81+192k 0+19774io 0pf+0w > 1032.978u 38.823s 1:08.17 1572.2% 81+192k 0+19696io 0pf+0w > 1033.908u 38.593s 1:11.70 1495.8% 81+192k 0+19729io 0pf+0w > 1091.749u 42.371s 1:04.27 1764.6% 81+192k 0+19751io 0pf+0w >=20 I meant to include that this is on a 48-core machine. Glen --GxcwvYAGnODwn7V8 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJU2KiBAAoJEAMUWKVHj+KTEPoQAKPk/fulNsmA7Uw6HagIIsf1 j0I0LZJCyew/oNuDCTOUjb5dpfRoADhnztnemCL4ioXm2uf+NltAn8SWKVCn/wFR 7dPJniyb9mYJE3ZSOeYI6ieYOlsbDiezypFiJxtOugnk9hTeogsOHolZaW//I1R+ k+S/degFYiBPAbnjfzmgeggi5YsHBbmFXI/mYcMggDf7CiWN6fS5yuWVqnsOOPRK 4RFVsRSYJlP0Bg74knT64WSpVpAbGDvVLe8EQcA6wB5gBS8zPQe59DJI29icaXP0 +LCpeM2Y395HL8M3irQH01Aor8zUAkF9jw0JGDFA/fyeUThM4mxDi08JK2f8C+gC VqWSsud2Xjp+9mfTk+aiKISqGGfbnGS4DuBATdSLgxKbfrvkjZr9YQ9fxRRSA6oy 2q7Eel1wYOtBopjFdElZhQcA2mTMzNV5nrc9NXeazjCPTbt058fcMQoasEFOn3zc Dhy1ty8I8BWlJ4ziPI48+E7T4f2gegWNvaJDItDnRpxY6lJrgmxZSWTJdIqAB7fE q/rxWCI3KgCiegrM+XIzXWMNqZugRZVJAdCx8ToO9C6B6KTUN4iUDhnBtt+3rlxX fulXnZij+3KnQn381OHFml2xEiROEzdB+/B0OyduD9Eb1gLDjuFZXTAdV6fTabPA YQx+Pgj0VBPoH3UG90Br =CCHA -----END PGP SIGNATURE----- --GxcwvYAGnODwn7V8--
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