take a total time of 2 hours 28 minutes 56 seconds !!!
not *so* much longer then a bin install
This approach also have the advantage that you can continue to run other services on the box, because you don't use the disk bandwidth and renice.
In this case the box was already running two database server, mysql and IBM informix and an apache server (not very much loaded at the moment).
howto: # mkdir /mnt/tmp /mnt/newchroot # mount -obind /your/chroot /mnt/tmp # mount -tramfs none /mnt/newchroot # cp -a /your/chroot/* /mnt/newchroot # mount -obind /dev/ /mnt/newchroot/dev # mount -obind /usr/portage /mnt/newchroot/usr/portage # mount -tproc none /mnt/newchroot/proc # chroot /mnt/newchroot/ # emerge -ave world
specs:
Dual Opteron(tm) Processor 246 @ 2GHz
4Gb ram
FEATURES="autoaddcvs autoconfig distlocks sandbox"
CFLAGS="-Os -march=opteron -mtune=opteron -fPIC"
CHOST="x86_64-pc-linux-gnu"
CXXFLAGS="{$CFLAGS} -fpermissive"
MAKEOPTS="-j4"
USE="amd64 acpi apache2 berkdb bitmap-fonts crypt f77 fam font-server foomaticdb fortran gdbm gif gpm ipv6 jp2 jpeg libwww lzw lzw-tiff multilib mysqli ncurses nls nptl nptlonly offensive opengl pdflib perl pic png python qt readline samba ssl tcpd usb userlocales xml2 xpm xrandr zlib video_cards_nvidia linguas_it"
swap space off.
Complete list of merge
Start Mon Jan 31 15:21:04 2005 sys-devel/patch-2.5.9-r1 | 20 seconds. sys-devel/gnuconfig-20040214 | 7 seconds. sys-libs/ncurses-5.4-r5 | 1 minute and 29 seconds. app-shells/bash-3.0-r7 | 1 minute and 9 seconds. sys-devel/binutils-config-1.7 | 6 seconds. sys-devel/gettext-0.14.1 | 2 minutes and 31 seconds. sys-devel/binutils-2.15.92.0.2-r2 | 2 minutes and 23 seconds. app-emulation/emul-linux-x86-glibc-1.1 | 12 seconds. sys-devel/m4-1.4.2-r1 | 15 seconds. sys-devel/bison-2.0 | 31 seconds. sys-libs/zlib-1.2.2 | 12 seconds. dev-python/python-fchksum-1.7.1 | 7 seconds. app-arch/bzip2-1.0.2-r4 | 11 seconds. sys-apps/debianutils-1.16.7-r4 | 8 seconds. sys-libs/db-1.85-r2 | 13 seconds. sys-libs/gdbm-1.8.3-r1 | 19 seconds. sys-devel/flex-2.5.4a-r6 | 12 seconds. sys-devel/bc-1.06-r5 | 13 seconds. sys-apps/diffutils-2.8.7-r1 | 30 seconds. sys-apps/texinfo-4.8 | 38 seconds. sys-apps/groff-1.19.1-r2 | 47 seconds. sys-devel/libperl-5.8.6 | 2 minutes and 8 seconds. dev-lang/perl-5.8.6-r2 | 4 minutes and 34 seconds. dev-libs/openssl-0.9.7e | 3 minutes and 15 seconds. sys-libs/db-4.2.52_p2 | 1 minute and 52 seconds. dev-libs/expat-1.95.8 | 16 seconds. dev-lang/python-2.3.4 | 1 minute and 52 seconds. sys-apps/portage-2.0.51-r15 | 17 seconds. sys-devel/gcc-config-1.3.9 | 8 seconds. sys-devel/gcc-3.4.3.20050110 | 23 minutes and 39 seconds. sys-libs/libstdc++-v3-3.3.4 | 4 minutes and 43 seconds. sys-libs/readline-5.0-r1 | 25 seconds. sys-kernel/linux26-headers-2.6.8.1-r3 | 41 seconds. sys-apps/sysvinit-2.86 | 9 seconds. sys-apps/baselayout-1.11.8-r3 | 13 seconds. sys-libs/glibc-2.3.4.20041102 | 18 minutes and 54 seconds. sys-apps/sed-4.1.2 | 29 seconds. sys-apps/cronbase-0.3.1 | 5 seconds. sys-apps/man-1.5p | 15 seconds. sys-apps/man-pages-2.01 | 24 seconds. sys-apps/grep-2.5.1-r7 | 24 seconds. net-libs/c-client-2004a | 26 seconds. sys-devel/autoconf-2.13 | 8 seconds. sys-devel/autoconf-wrapper-2 | 6 seconds. sys-devel/autoconf-2.59-r6 | 14 seconds. sys-devel/automake-1.5 | 10 seconds. sys-devel/automake-1.8.5-r3 | 13 seconds. sys-devel/automake-1.6.3 | 11 seconds. sys-devel/automake-1.7.9-r1 | 12 seconds. sys-devel/automake-1.4_p6 | 10 seconds. sys-devel/automake-wrapper-1 | 6 seconds. sys-devel/automake-1.9.4 | 12 seconds. sys-devel/libtool-1.5.10-r4 | 50 seconds. sys-apps/gawk-3.1.4-r1 | 38 seconds. dev-libs/gmp-4.1.4 | 1 minute and 46 seconds. app-crypt/mhash-0.9.1 | 25 seconds. dev-libs/libxml2-2.6.17 | 1 minute and 50 seconds. dev-libs/libgpg-error-1.0-r1 | 18 seconds. dev-libs/libgcrypt-1.2.1 | 47 seconds. dev-libs/libxslt-1.1.12 | 48 seconds. sys-apps/file-4.12 | 23 seconds. dev-libs/libmcrypt-2.5.7 | 27 seconds. net-misc/curl-7.12.3 | 1 minute and 4 seconds. dev-php/php-5.0.3 | 2 minutes and 44 seconds. media-libs/jpeg-6b-r4 | 26 seconds. media-libs/tiff-3.7.1-r1 | 59 seconds. dev-util/yacc-1.9.1-r2 | 9 seconds. net-www/apache-2.0.52-r2 | 4 minutes and 57 seconds. media-libs/libpng-1.2.8 | 16 seconds. sys-apps/procps-3.2.4-r2 | 16 seconds. dev-db/mysql-4.1.9 | 9 minutes and 16 seconds. dev-php/mod_php-5.0.3-r1 | 3 minutes and 8 seconds. dev-php/PEAR-Log-1.8.4 | 6 seconds. app-shells/sash-3.7 | 10 seconds. sys-apps/miscfiles-1.4.2 | 8 seconds. sys-libs/cracklib-2.7-r10 | 10 seconds. app-editors/nano-1.3.5 | 19 seconds. app-arch/cpio-2.6-r1 | 28 seconds. sys-devel/make-3.80-r1 | 24 seconds. dev-libs/libol-0.3.14 | 24 seconds. app-admin/syslog-ng-1.6.5-r2 | 22 seconds. app-arch/gzip-1.3.5-r5 | 15 seconds. net-misc/wget-1.9.1-r2 | 27 seconds. sys-apps/which-2.16 | 14 seconds. net-dns/libidn-0.5.13 | 28 seconds. sys-apps/tcp-wrappers-7.6-r8 | 10 seconds. net-misc/openssh-3.9_p1-r1 | 1 minute and 17 seconds. net-libs/courier-authlib-0.52-r1 | 2 minutes and 22 seconds. net-mail/courier-imap-4.0.1 | 5 minutes and 4 seconds. app-arch/ncompress-4.2.4-r1 | 7 seconds. app-arch/tar-1.15.1 | 43 seconds. sys-apps/psmisc-21.5 | 20 seconds. dev-perl/Unix-Syslog-0.100-r1 | 9 seconds. dev-perl/BerkeleyDB-0.26 | 12 seconds. app-arch/freeze-2.5.0 | 8 seconds. dev-perl/Compress-Zlib-1.33 | 12 seconds. dev-perl/IO-Zlib-1.01 | 8 seconds. dev-perl/Test-Harness-2.42 | 9 seconds. dev-perl/IO-String-1.05 | 8 seconds. dev-perl/Archive-Tar-1.23-r1 | 9 seconds. app-arch/zoo-2.10 | 9 seconds. dev-perl/libnet-1.19 | 9 seconds. dev-perl/MailTools-1.65 | 9 seconds. dev-perl/IO-stringy-2.109 | 9 seconds. dev-perl/MIME-Base64-3.05 | 10 seconds. dev-perl/digest-base-1.08 | 8 seconds. dev-perl/Digest-MD5-2.33 | 9 seconds. dev-perl/HTML-Tagset-3.04 | 8 seconds. dev-perl/HTML-Parser-3.36-r1 | 13 seconds. dev-perl/URI-1.35 | 9 seconds. dev-perl/Crypt-SSLeay-0.51 | 10 seconds. dev-perl/libwww-perl-5.800 | 11 seconds. dev-perl/MIME-tools-5.416 | 12 seconds. dev-perl/Convert-TNEF-0.17-r2 | 8 seconds. dev-perl/Locale-gettext-1.03 | 9 seconds. sys-apps/help2man-1.35.1 | 7 seconds. sys-apps/coreutils-5.2.1-r4 | 2 minutes and 24 seconds. net-mail/mailbase-0.00-r6 | 6 seconds. dev-libs/libpcre-5.0 | 28 seconds. mail-mta/postfix-2.1.5-r2 | 53 seconds. dev-perl/Archive-Zip-1.14 | 14 seconds. app-arch/arc-5.21j | 7 seconds. dev-perl/net-server-0.87 | 11 seconds. app-arch/lha-114i-r4 | 9 seconds. app-arch/unrar-3.4.3 | 13 seconds. dev-perl/Time-HiRes-1.59 | 18 seconds. dev-perl/Convert-UUlib-1.03 | 15 seconds. app-arch/unarj-2.63a-r2 | 7 seconds. dev-perl/Net-Daemon-0.38 | 8 seconds. dev-perl/Storable-2.13 | 13 seconds. dev-perl/PlRPC-0.2016-r1 | 8 seconds. dev-perl/DBI-1.46 | 16 seconds. dev-perl/DBD-mysql-2.9004 | 16 seconds. app-antivirus/clamav-0.81 | 48 seconds. app-arch/cabextract-1.1 | 17 seconds. mail-filter/amavisd-new-2.2.1 | 11 seconds. dev-perl/DateManip-5.42a-r1 | 9 seconds. app-portage/genlop-0.30.2 | 6 seconds. sys-apps/xinetd-2.3.13 | 22 seconds. net-mail/qpopper-4.0.5-r1 | 33 seconds. app-portage/gentoolkit-0.2.0 | 6 seconds. sys-apps/findutils-4.1.20-r1 | 40 seconds. net-www/webapp-config-1.10-r11 | 7 seconds. www-apps/horde-pear-1.3-r1 | 8 seconds. sys-apps/kbd-1.12-r4 | 14 seconds. sys-libs/pwdb-0.62 | 11 seconds. sys-apps/module-init-tools-3.1 | 24 seconds. dev-php/PEAR-DB-1.6.5 | 6 seconds. sys-apps/linux32-1.0 | 6 seconds. dev-php/PEAR-Mail_Mime-1.2.1-r1 | 6 seconds. net-misc/iputils-021109-r3 | 12 seconds. sys-apps/shadow-4.0.6-r1 | 59 seconds. sys-apps/ed-0.2-r6 | 11 seconds. app-crypt/hashalot-0.3 | 11 seconds. sys-fs/e2fsprogs-1.35-r1 | 1 minute and 1 seconds. sys-apps/util-linux-2.12p | 29 seconds. net-mail/email-2.3.2 | 17 seconds. sys-apps/net-tools-1.60-r10 | 17 seconds. sys-apps/less-382-r2 | 16 seconds. dev-libs/popt-1.7-r1 | 24 seconds. net-misc/rsync-2.6.3 | 32 seconds. net-nds/portmap-5b-r9 | 8 seconds. app-admin/fam-2.7.0-r2 | 59 seconds. sys-apps/hdparm-5.8 | 6 seconds. sys-fs/devfsd-1.3.25-r8 | 9 seconds. www-apps/horde-3.0.2 | 1 minute and 45 seconds. Last Start: Mon Jan 31 17:48:15 2005
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