Le samedi 04 avril 2020 à 15:55 +0200, Andreas Bergmeier a écrit : > The problem of data transfer costs is not new in Cloud environments. At work > we usually just opt for paying for it since dev time is scarser. For private > projects though, I opt for aggressive (remote) caching. > So you can setup a global cache in Google Cloud Storage and more local caches > wherever your executors are (reduces egress as much as possible). > This setup works great with Bazel and Pants among others. Note that these > systems are pretty hermetic in contrast to Meson. > IIRC Eric by now works at Google. They internally use Blaze which AFAIK does > aggressive caching, too. > So maybe using any of these systems would be a way of not having to sacrifice > any of the current functionality. > Downside is that you have lower a bit of dev productivity since you cannot > eyeball your build definitions anymore. > Did you mean Bazel [0] ? I'm not sure I follow your reflection, why is Meson vs Bazel related to this issue ?
Nicolas [0] https://bazel.build/ > ym2c > > > On Fri, 28 Feb 2020 at 20:34, Eric Anholt <e...@anholt.net> wrote: > > On Fri, Feb 28, 2020 at 12:48 AM Dave Airlie <airl...@gmail.com> wrote: > > > > > > On Fri, 28 Feb 2020 at 18:18, Daniel Stone <dan...@fooishbar.org> wrote: > > > > > > > > On Fri, 28 Feb 2020 at 03:38, Dave Airlie <airl...@gmail.com> wrote: > > > > > b) we probably need to take a large step back here. > > > > > > > > > > Look at this from a sponsor POV, why would I give X.org/fd.o > > > > > sponsorship money that they are just giving straight to google to pay > > > > > for hosting credits? Google are profiting in some minor way from these > > > > > hosting credits being bought by us, and I assume we aren't getting any > > > > > sort of discounts here. Having google sponsor the credits costs google > > > > > substantially less than having any other company give us money to do > > > > > it. > > > > > > > > The last I looked, Google GCP / Amazon AWS / Azure were all pretty > > > > comparable in terms of what you get and what you pay for them. > > > > Obviously providers like Packet and Digital Ocean who offer bare-metal > > > > services are cheaper, but then you need to find someone who is going > > > > to properly administer the various machines, install decent > > > > monitoring, make sure that more storage is provisioned when we need > > > > more storage (which is basically all the time), make sure that the > > > > hardware is maintained in decent shape (pretty sure one of the fd.o > > > > machines has had a drive in imminent-failure state for the last few > > > > months), etc. > > > > > > > > Given the size of our service, that's a much better plan (IMO) than > > > > relying on someone who a) isn't an admin by trade, b) has a million > > > > other things to do, and c) hasn't wanted to do it for the past several > > > > years. But as long as that's the resources we have, then we're paying > > > > the cloud tradeoff, where we pay more money in exchange for fewer > > > > problems. > > > > > > Admin for gitlab and CI is a full time role anyways. The system is > > > definitely not self sustaining without time being put in by you and > > > anholt still. If we have $75k to burn on credits, and it was diverted > > > to just pay an admin to admin the real hw + gitlab/CI would that not > > > be a better use of the money? I didn't know if we can afford $75k for > > > an admin, but suddenly we can afford it for gitlab credits? > > > > As I think about the time that I've spent at google in less than a > > year on trying to keep the lights on for CI and optimize our > > infrastructure in the current cloud environment, that's more than the > > entire yearly budget you're talking about here. Saying "let's just > > pay for people to do more work instead of paying for full-service > > cloud" is not a cost optimization. > > > > > > > > Yes, we could federate everything back out so everyone runs their own > > > > builds and executes those. Tinderbox did something really similar to > > > > that IIRC; not sure if Buildbot does as well. Probably rules out > > > > pre-merge testing, mind. > > > > > > Why? does gitlab not support the model? having builds done in parallel > > > on runners closer to the test runners seems like it should be a thing. > > > I guess artifact transfer would cost less then as a result. > > > > Let's do some napkin math. The biggest artifacts cost we have in Mesa > > is probably meson-arm64/meson-arm (60MB zipped from meson-arm64, > > downloaded by 4 freedreno and 6ish lava, about 100 pipelines/day, > > makes ~1.8TB/month ($180 or so). We could build a local storage next > > to the lava dispatcher so that the artifacts didn't have to contain > > the rootfs that came from the container (~2/3 of the insides of the > > zip file), but that's another service to build and maintain. Building > > the drivers once locally and storing it would save downloading the > > other ~1/3 of the inside of the zip file, but that requires a big > > enough system to do builds in time. > > > > I'm planning on doing a local filestore for google's lava lab, since I > > need to be able to move our xml files off of the lava DUTs to get the > > xml results we've become accustomed to, but this would not bubble up > > to being a priority for my time if I wasn't doing it anyway. If it > > takes me a single day to set all this up (I estimate a couple of > > weeks), that costs my employer a lot more than sponsoring the costs of > > the inefficiencies of the system that has accumulated. > > _______________________________________________ > > mesa-dev mailing list > > mesa-...@lists.freedesktop.org > > https://lists.freedesktop.org/mailman/listinfo/mesa-dev > > _______________________________________________ > memb...@foundation.x.org: X.Org Foundation Members > Archives: https://foundation.x.org/cgi-bin/mailman/private/members > Info: https://foundation.x.org/cgi-bin/mailman/listinfo/members _______________________________________________ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel
