debdelta

Interessant für Sie ist das Werkzeug debdelta-upgrade aus dem Debdelta-Projekt ([Debdelta]). Es steht im Paket 'debdelta' [Debian-Paket-debdelta] bereit, welches ebenfalls die drei weiteren Programme debdelta, debdeltas und debpatch enthält. Falls Sie das Werkzeug cupt installiert haben, ist debdelta-upgrade ebenfalls dort integriert (siehe [Cupt]).

debdelta-upgrade überträgt nicht die Pakete vollumfänglich, sondern nur die jeweiligen Unterschiede zwischen beiden Versionen — genannt 'deltas'. Der Ideengeber für das in der Programmiersprache Python geschriebene Programm ist das Werkzeug diff, welches zeilenweise die Unterschiede zwischen zwei Dateien anzeigt.

In dem nachfolgenden Beispiel sehen wir einen debdelta-upgrade-Lauf mit einer virtuellen Übertragungsrate von 60kB/s über eine EDGE-Verbindung, deren Download-Raten zwischen 15kB/s und 25kB/s liegen. Das Ergebnis ist eine Verbesserung um den Faktor 2.5.

Optimiertes Herunterladen von Daten mit debdelta
# debdelta-upgrade
Created,    time  6.46sec, speed 31kB/sec, gir1.2-gtk-3.0_3.8.5-1_i386.deb
Created,    time  0.81sec, speed 75kB/sec, libgail-3-0_3.8.5-1_i386.deb
Created,    time  0.71sec, speed 82kB/sec, libgtk-3-bin_3.8.5-1_i386.deb
Created,    time  1.15sec, speed 72kB/sec, libio-socket-ssl-perl_1.955-1_all.deb
Created,    time  0.66sec, speed 15kB/sec, libmodule-build-tiny-perl_0.030-1_all.deb
Created,    time  3.36sec, speed 5672B/sec, libmodule-metadata-perl_1.000019-1_all.deb
Created,    time  0.72sec, speed 54kB/sec, libmodule-scandeps-perl_1.11-1_all.deb
Created,    time  0.51sec, speed 82kB/sec, libqt4-dbus_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  3.82sec, speed 61kB/sec, libqt4-help_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  8.99sec, speed 90kB/sec, libqt4-script_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  3.09sec, speed 82kB/sec, libqt4-scripttools_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  1.41sec, speed 94kB/sec, libqt4-sql_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  0.58sec, speed 101kB/sec, libqt4-sql-sqlite_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  1.52sec, speed 112kB/sec, libqt4-svg_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  1.05sec, speed 90kB/sec, libqt4-test_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Delta is not present: libstring-flogger-perl_1.101242-1_1.101243-1_all.debdelta
Delta is not present: libsub-exporter-progressive-perl_0.001009-1_0.001010-1_all.debdelta
Created,    time 17.33sec, speed 59kB/sec, libqt4-xmlpatterns_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  3.49sec, speed 61kB/sec, libqtdbus4_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  1.38sec, speed 43kB/sec, librose-object-perl_0.860-1_all.deb
Created,    time  0.70sec, speed 17kB/sec, libstring-toidentifier-en-perl_0.11-1_all.deb
Created,    time  1.13sec, speed 43kB/sec, libsub-exporter-perl_0.986-1_all.deb
Created,    time  1.02sec, speed 14kB/sec, libsystem-command-perl_1.105-1_all.deb
Created,    time  0.62sec, speed 28kB/sec, libtest-file-perl_1.35-1_all.deb
Downloaded, time  0.42sec, speed 2580B/sec, libtext-hunspell-perl_2.05-1+b1_2.08-1_i386.debdelta
Downloaded, time  0.49sec, speed 2764B/sec, libqt4-opengl_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Created,    time  0.84sec, speed 45kB/sec, libtest-spec-perl_0.47-1_all.deb
Downloaded, time  0.38sec, speed 4031B/sec, librose-db-perl_0.769-1_0.771-1_all.debdelta
Created,    time  0.51sec, speed 41kB/sec, libxml-compile-cache-perl_0.995-1_all.deb
Downloaded, time  1.04sec, speed 1507B/sec, librt-client-rest-perl_1%3a0.43-2_1%3a0.44-1_all.debdelta
Created,    time  0.89sec, speed 72kB/sec, qdbus_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Downloaded, time  0.51sec, speed 3708B/sec, libavresample1_6%3a9.8-2+b2_6%3a9.10-1_i386.debdelta
Created,    time  0.50sec, speed 85kB/sec, qt4-default_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Downloaded, time  0.46sec, speed 5070B/sec, libavdevice53_6%3a9.8-2+b2_6%3a9.10-1_i386.debdelta
Downloaded, time  0.41sec, speed 5990B/sec, libavutil52_6%3a9.8-2+b2_6%3a9.10-1_i386.debdelta
Downloaded, time  0.60sec, speed 7016B/sec, libqt4-network_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Downloaded, time  0.62sec, speed  9kB/sec, libxml-compile-perl_1.35-1_1.39-1_all.debdelta
Downloaded, time  1.82sec, speed 7299B/sec, libswscale2_6%3a9.8-2+b2_6%3a9.10-1_i386.debdelta
Downloaded, time  5.09sec, speed 2790B/sec, libyaml-libyaml-perl_0.38-3+b1_0.41-1_i386.debdelta
Downloaded, time  2.18sec, speed  8kB/sec, python3-sip_4.14.7-4_4.15.2-2_i386.debdelta
Downloaded, time  1.90sec, speed 10kB/sec, libavfilter3_6%3a9.8-2+b2_6%3a9.10-1_i386.debdelta
Downloaded, time  5.04sec, speed 3941B/sec, python-sip_4.14.7-4_4.15.2-2_i386.debdelta
Downloaded, time  1.82sec, speed 10kB/sec, libqt4-xml_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Downloaded, time  5.24sec, speed 3954B/sec, libqt4-declarative_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Created,    time 31.47sec, speed 120kB/sec, qt4-dev-tools_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time 11.64sec, speed 72kB/sec, qt4-linguist-tools_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  1.50sec, speed 86kB/sec, qt4-qtconfig_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Downloaded, time 21.87sec, speed 1090B/sec, libgtk-3-common_3.8.4-1_3.8.5-1_all.debdelta
Downloaded, time  6.28sec, speed 4569B/sec, libqtcore4_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Downloaded, time  4.94sec, speed 6927B/sec, libqt4-qt3support_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Created,    time 15.00sec, speed 39kB/sec, qtcore4-l10n_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_all.deb
Created,    time  0.49sec, speed 38kB/sec, libtext-hunspell-perl_2.08-1_i386.deb
Downloaded, time  3.40sec, speed 11kB/sec, qt4-qmake_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Downloaded, time  2.64sec, speed 16kB/sec, librose-db-object-perl_1%3a0.806-1_1%3a0.807-1_all.debdelta
Created,    time  4.11sec, speed 80kB/sec, libqt4-opengl_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  1.84sec, speed 69kB/sec, librose-db-perl_0.771-1_all.deb
Downloaded, time  2.54sec, speed 18kB/sec, libqt4-dev-bin_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Created,    time  1.74sec, speed 40kB/sec, librt-client-rest-perl_1%3a0.44-1_all.deb
Created,    time  1.20sec, speed 75kB/sec, libavresample1_6%3a9.10-1_i386.deb
Created,    time  0.79sec, speed 101kB/sec, libavdevice53_6%3a9.10-1_i386.deb
Created,    time  1.41sec, speed 89kB/sec, libavutil52_6%3a9.10-1_i386.deb
Downloaded, time  5.43sec, speed 14kB/sec, libqt4-dev_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Created,    time  8.74sec, speed 65kB/sec, libqt4-network_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Downloaded, time 13.47sec, speed 15kB/sec, gtk3-engines-oxygen_1.1.4-1_1.2.0-1_i386.debdelta
Created,    time  9.57sec, speed 22kB/sec, libxml-compile-perl_1.39-1_all.deb
Created,    time  2.59sec, speed 56kB/sec, libswscale2_6%3a9.10-1_i386.deb
Created,    time  0.98sec, speed 64kB/sec, libyaml-libyaml-perl_0.41-1_i386.deb
Created,    time  1.08sec, speed 72kB/sec, python3-sip_4.15.2-2_i386.deb
Created,    time  2.00sec, speed 79kB/sec, libavfilter3_6%3a9.10-1_i386.deb
Created,    time  1.08sec, speed 73kB/sec, python-sip_4.15.2-2_i386.deb
Created,    time  1.10sec, speed 116kB/sec, libqt4-xml_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Downloaded, time 14.62sec, speed 15kB/sec, libqt4-designer_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Created,    time 20.09sec, speed 54kB/sec, libqt4-declarative_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
 Error: applying of delta for libgtk-3-common failed:  : Error, 220 locale files are absent. (non retriable)
Downloaded, time 25.98sec, speed 11kB/sec, libavformat54_6%3a9.8-2+b2_6%3a9.10-1_i386.debdelta
Created,    time 18.78sec, speed 82kB/sec, libqtcore4_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time 14.29sec, speed 73kB/sec, libqt4-qt3support_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Downloaded, time 36.54sec, speed 15kB/sec, libav-tools_6%3a9.8-2+b2_6%3a9.10-1_i386.debdelta
Created,    time 26.96sec, speed 45kB/sec, qt4-qmake_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time 23.77sec, speed 22kB/sec, librose-db-object-perl_1%3a0.807-1_all.deb
Downloaded, time 54.52sec, speed 12kB/sec, libgtk-3-0_3.8.4-1_3.8.5-1_i386.debdelta
Created,    time 36.84sec, speed 43kB/sec, libqt4-dev-bin_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Downloaded, time 54.63sec, speed 14kB/sec, libavcodec54_6%3a9.8-2+b2_6%3a9.10-1_i386.debdelta
Created,    time 58.14sec, speed 14kB/sec, libqt4-dev_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time  4.72sec, speed 70kB/sec, gtk3-engines-oxygen_1.2.0-1_i386.deb
Downloaded, time 48.70sec, speed 16kB/sec, libqtgui4_4%3a4.8.5+git121-g2a9ea11+dfsg-1_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.debdelta
Created,    time 25.46sec, speed 140kB/sec, libqt4-designer_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Created,    time 10.35sec, speed 63kB/sec, libavformat54_6%3a9.10-1_i386.deb
Created,    time 40.21sec, speed 80kB/sec, libav-tools_6%3a9.10-1_i386.deb
Created,    time 19.10sec, speed 93kB/sec, libgtk-3-0_3.8.5-1_i386.deb
Created,    time 59.42sec, speed 48kB/sec, libavcodec54_6%3a9.10-1_i386.deb
Created,    time 58.16sec, speed 69kB/sec, libqtgui4_4%3a4.8.5+git121-g2a9ea11+dfsg1-2_i386.deb
Downloaded, time 228.14sec, speed 12kB/sec, libgtk-3-common_3.8.5-1_all.deb
Delta-upgrade statistics:
 total resulting debs, size 37MB time 637sec virtual speed 60kB/sec
Sorry, no forensic logs were generated
debdelta-upgrade  331.64s user 50.87s system 56% cpu 11:15.57 total
#

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