Hi, A new yum and urlgrabber packages have just hit Rawhide. These releases include some new features, including parallel downloading of packages and metadata, and a new mirror selection code. As we plan to include these features in RHEL7, I welcome any feedback or bug reports! python-urlgrabber-3.9.1-12.fc18 supports a new API to urlgab() files in parallel, and yum-3.4.3-26.fc18 can use this. Both packages are compatible with older versions. Feature list: - parallel downloading of packages and metadata If possible, multiple files are downloaded in parallel. (see below for the limitations that apply) - configurable 'max_connections' limit in yum.conf This is the maximum number of simultaneous connections Yum makes. Purpose of this is to limit local resources (number of processes forked). The default is to use urlgrabber's default value of 5. - mirror limits are honored, too. Making many connections to the same mirror usually does not help much, it just consumes more resources. That's why Yum also uses mirror limits from metalink.xml. If no such limit is available, at most 3 simultaneous connections are made to any single mirror. - new mirror selection algorithm The real downloading speed is calculated after each download, and the mirror's statistics get updated. These are in turn used when selecting mirrors for further downloads. This should be more accurate than measuring latencies in fastestmirror plugin, but slow mirrors now have to be tried from time to time, and the statistics need some time to build up. - ctrl-c handling This is a long-standing problem in Yum. Due to various shortcomings in rpm and curl it's impossible to react immediately to SIGINT. But now the downloader runs in a different process, so we can exit even if curl is still stuck. The "skip to next mirror" feature is gone (we don't want to restart all currently running downloads). Known limitations: - metalink.xml and repomd.xml downloads are not parallelized yet. -- Zdeněk Pavlas -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
