On 2017-12-17 19:30:50, Noah Meyerhans wrote: > On Fri, Dec 15, 2017 at 08:03:51PM +0100, Bastian Blank wrote: > > > > We at credativ are responsible for maintaining the Azure cloud images. > > > > We got asked by Microsoft to explore the possibilities of introducing a > > > > specialised Linux image for this plattform into Debian. The main > > > > enhancements we look at would be: > > > > - faster boot of the instance, > > > > - smaller memory footprint of the running kernel, and > > > > - new features. > > > > > > However, if it is possible to create a single flavour that provides > > > those sorts of enhancements for multiple cloud platforms, I think that > > > would be worthwhile. > > > > I have some initial findings for a kernel using a derived config. I > > reduced the boot time by 5 seconds (from 30 to 25). The installed size > > was reduced from 190 to 50MB. > > > > Microsoft published a patch set against 4.13 and 4.14 > > https://github.com/Microsoft/azure-linux-kernel > > they would like to add. > > > > Now the question is if other cloud providers would like to follow such a > > path by using and careing for a specialised linux image for this > > platforms? > > I'd be interested in helping to support work for a cloud kernel and > verifying its functionality on EC2. I can't, however, make a lot of > promises about how much time I can commit to this effort. > > In our previous thread on this topic[1] it was suggested[2] that a tuned > initramfs config might go a long way toward reducing boot times. It's > not an investigation to which I've been able to devote much time, > unfortunately, but I think we should pursue that path to completion > before we look at patching the kernel or providing custom builds. Has > this been done on any cloud platform yet? I personally have a mixed feelings about it on one hand I like benefits of having kernel tuned for virtualised systems but on the other it may cause (as lots of things in Debian) a bit of flame due to new kernel flavour. Some time ago we had RT version so maybe it wouldn't be so controversial as I'm afraid it may be. Also if we'd go with this we'd need to involve somehow kernel team for simple reasons like, their expertise in working with kernel and even maybe they would be willing to add cloud kernel into their kernel building pipeline. -- |_|0|_| | |_|_|0| "Panta rei" | |0|0|0| -------- kuLa -------- | gpg --keyserver pgp.mit.edu --recv-keys 0x686930DD58C338B3 3DF1 A4DF C732 4688 38BC F121 6869 30DD 58C3 38B3
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