Debians commandline package manager https://git.kalnischkies.de/apt/atom?h=1.2.1 2016-01-25T16:17:54Z 2016-01-25T16:17:54Z Michael Vogt mvo@debian.org 2016-01-25T16:17:54Z urn:sha1:48fe8dff592f6769bf2c67b8e7befd7091068f7d Git-Dch: ignore 2016-01-25T15:49:48Z Michael Vogt mvo@debian.org 2016-01-25T15:49:48Z urn:sha1:46e88ba252230858abe891d5815fce884d3cf35d Git-Dch: ignore Thanks: David Kalnischkies 2016-01-25T13:44:42Z Michael Vogt mvo@debian.org 2016-01-25T13:44:42Z urn:sha1:a6fd0c5cc412afd5dac7a9952cab741e48342488 Thanks: Thomas Reusch 2016-01-15T17:19:16Z David Kalnischkies david@kalnischkies.de 2016-01-15T16:54:43Z urn:sha1:3b4045fc31baf3aa580bd695695d579c30a481b8 Git-Dch: Ignore 2016-01-14T22:08:02Z David Kalnischkies david@kalnischkies.de 2016-01-14T19:13:16Z urn:sha1:62428dbc17ffa7b5b8188e88609a9438428d6024 Architectures for packages which do not belong to the native nor a foreign architecture (dubbed barbarian for now) which are marked M-A:foreign still provide in their own architecture even if not for others. Also, other M-A:foreign (and allowed) packages provide in these barbarian architectures. 2016-01-08T20:08:51Z Julian Andres Klode jak@debian.org 2016-01-08T19:57:23Z urn:sha1:e9a1e5f9a37b8ddcdb98f2a0608f262e0863673a I overlooked this Gbp-Dch: ignore 2016-01-08T14:40:01Z David Kalnischkies david@kalnischkies.de 2016-01-07T19:32:09Z urn:sha1:0179cfa83cf0042235eda41db7f35c420781c63e Downloading and storing are two different operations were different compression types can be preferred. For downloading we provide the choice via Acquire::CompressionTypes::Order as there is a choice to be made between download size and speed – and limited by whats available in the repository. Storage on the other hand has all compressions currently supported by apt available and to reduce runtime of tools accessing these files the compression type should be a low-cost format in terms of decompression. apt traditionally stores its indexes uncompressed on disk, but has options to keep them compressed. Now that apt downloads additional files we also deal with files which simply can't be stored uncompressed as they are just too big (like Contents for apt-file). Traditionally they are downloaded in a low-cost format (gz) as repositories do not provide other formats, but there might be even lower-cost formats and for download we could introduce higher-cost in the repositories. Downloading an entire index potentially requires recompression to another format, so an update takes potentially longer – but big files are usually updated via pdiffs which has to de- and re-compress anyhow and does it on the fly anyhow, so there is no extra time needed and in general it seems to be benefitial to invest the time in update to save time later on file access. 2016-01-08T11:37:58Z Julian Andres Klode jak@debian.org 2016-01-08T11:37:58Z urn:sha1:4a666d28d7f30f2eb856ffef0ea0343be6cccef1 Do not create strings within the loop, that creates one string per language and does more work than needed. Instead, reserve enough space at the beginning and assign the prefix, and then resize and append inside the loop. Also call exists with the string itself instead of the c_str(), this means that the lookup uses the size information in the string now and does not have to call strlen() on it. 2016-01-07T23:52:29Z Julian Andres Klode jak@debian.org 2016-01-07T23:52:29Z urn:sha1:57590d3c6e6b055402c938c3baebf1d872c58f7e This improves performance, as we now can ignore unequal strings based on their length already. Gbp-Dch: ignore 2016-01-07T18:59:08Z Julian Andres Klode jak@debian.org 2016-01-07T18:16:23Z urn:sha1:eff0c22e59e65b6b63e854ff41eb091278e05714 This improves performance of the cache generation on my ARM platform (4x Cortex A15) by about 10% to 20% from 2.35-2.50 to 2.1 seconds.