On 2017-09-19 14:15:53 +0200 (+0200), Attila Fazekas wrote: [...] > Let's start with the first obvious difference compared to the old-time > jobs.: > The jobs does 120..220 sec apt-get install and packages defined > /files/debs/general are missing from the images before starting the job. > > We used to bake multiple packages into the images based on the package list > provided by devstack in order to save time. > > Why this does not happens anymore ? > Is anybody working on solving this issue ? > Is any blocker technical issue / challenge exists ? > Was it a design decision ? [...]
In order to reduce image sizes and the time it takes to build images, once we had local package caches in each provider we stopped pre-retrieving packages onto the images. Is the time spent at this stage mostly while downloading package files (which is what that used to alleviate) or is it more while retrieving indices or installing the downloaded packages (things having them pre-retrieved on the images never solved anyway)? Our earlier analysis of the impact of dropping package files from images indicated it was negligible for most jobs because of the caching package mirrors we maintain nearby. -- Jeremy Stanley
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