| vagrantc | is there any secure way to verify the ssh host keys for git.launchpad.net ? | 02:38 |
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| === yp is now known as ypwong | ||
| === daker_ is now known as daker | ||
| _Groo_ | hi/2 all | 15:42 |
| _Groo_ | when building an llvm git snapshot, the ppa is running out of memory and killing dpkg-buildpackage, is there any workaround for this? | 15:47 |
| _Groo_ | see https://launchpad.net/~paulo-miguel-dias/+archive/ubuntu/llvm-snapshot/+build/9669573 | 15:51 |
| _Groo_ | https://answers.launchpad.net/launchpad/+question/292934 | 15:51 |
| cjwatson | _Groo_: I've answered on your ticket | 16:53 |
| _Groo_ | cjwatson: nice, let me read it | 16:53 |
| * cjwatson corrects himself | 16:54 | |
| _Groo_ | cjwatson: hum ok, ill check, but just a quick reply. am i right? is the builder killing the ld linkage? | 16:54 |
| cjwatson | Yep, you're just running out of memory because you're using a pretty enormous amount of it | 16:54 |
| cjwatson | Nothing magical | 16:55 |
| _Groo_ | cjwatson: yeah, llvm is a beast, it can easily consume 10GB or more during linkage | 16:55 |
| cjwatson | There must be ways to trim that down though | 16:55 |
| _Groo_ | cjwatson: ill have to check the docs to see HOW am i supposed to lower this amount | 16:55 |
| cjwatson | Giving builds that much would significantly reduce the number of builders we can operate | 16:55 |
| cjwatson | Which would make quite a dent in our overall throughput | 16:56 |
| _Groo_ | cjwatson: i know, it would be an exception, i only use this particular ppa for llvm purposed, precisely because its such a beast | 16:56 |
| cjwatson | Like I say, we may be able to bump to 8GiB at some point, but probably not until the builder clouds are next redeployed | 16:56 |
| cjwatson | We can't make exceptions | 16:56 |
| cjwatson | I mean literally can't, all builder instances are identical | 16:56 |
| _Groo_ | cjwatson: im not asking you to, i was just merely saying that this would be a case for an exception | 16:56 |
| cjwatson | And I'm saying we have no possibility of exceptions | 16:57 |
| _Groo_ | cjwatson: i understood that from the start, its a global configuration :D | 16:57 |
| _Groo_ | cjwatson: thanks for the quick reply, you are awesome :D | 16:57 |
| cjwatson | Anyway, llvm can be built in Ubuntu, so it must be possible | 16:57 |
| cjwatson | Since we use the same builders | 16:58 |
| _Groo_ | cjwatson: back to the documentation to see how am i going to fix this | 16:58 |
| _Groo_ | cjwatson: good luck in compiling 3.9 | 16:58 |
| cjwatson | I'm sure it will be managed | 16:58 |
| _Groo_ | cjwatson: it changed from make to cmake, and although it made stuff much simpler, it bumped the memory consumption quite a lot | 16:58 |
| _Groo_ | cjwatson: but yeah, we will tame the beast | 16:59 |
| cjwatson | How would the build system make much of a difference? Unless of course it dropped some memory-reduction flags or is linking more objects at once | 16:59 |
| cjwatson | Fortunately I don't myself maintain toolchain packages | 16:59 |
| _Groo_ | cjwatson: is there any way for me to see the logs of the actual builder? like memory consumption and the OS logs? | 16:59 |
| cjwatson | No, we don't retain those | 16:59 |
| _Groo_ | cjwatson: both i guess | 17:00 |
| _Groo_ | cjwatson: ugh it will be try and error then :P oh well... | 17:00 |
| cjwatson | You can dump out whatever information you like during the build as long as you can get hold of it as non-root | 17:00 |
| _Groo_ | cjwatson: how? | 17:00 |
| cjwatson | you already have a dh_override_auto_build target, right? | 17:01 |
| cjwatson | make it run actual-build-command || { dump-information; exit 1; } | 17:02 |
| cjwatson | pseudocode obviously | 17:02 |
| cjwatson | the process being killed is ld, not any of the packaging machinery, so you have an opportunity to handle it | 17:02 |
| _Groo_ | cjwatson: ok, tks for the tip | 17:04 |
| clivejo | hi folks, anyone know how the LP git web hooks work? and if they can be used to trigger builds on Jenkins? | 18:06 |
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