Hi Richard, Quoting Richard Lewis (2024-11-17 20:20:40) > > I'm not familiar with eatmydata but as far as I understand the docs you run > > something under eatmydata by using the eatmydata wrapper program. So if > > your chroot has eatmydata installed, maybe try adding this to your > > ~/.sbuildrc: > > > > $build_env_cmnd = ['eatmydata']; > > > > Does that work? > > I assume no square brackets - i get some perl error with that, > although it claimed to do something (the example in sbuild.conf doesnt > have them)
Oh you are right, the option is a string, not a list. Does eatmydata work if you run it like that? > I am running "gbp buildpackage --mode=unshare --no-run-lintian > --no-run-piuparts --no-run-autopkgtest" some times are below. > > schroot (2nd run, in case of caching - directory and overlayfs): > > Build needed 00:00:16, 5352k disk space > real 0m20.029s > user 0m12.594s > sys 0m6.416s > > > unshare (2nd run, in case of caching, no use of eatmydata) > Build needed 00:00:40, 5352k disk space > real 0m49.898s > user 0m26.677s > sys 0m19.721s > > unshare with eatmydata (2nd run, in case of caching) > Build needed 00:00:35, 5352k disk space > real 0m44.809s > user 0m24.927s > sys 0m16.344s > > > I suppose a lot of the difference is uncompressing the tarball - i didnt try > plain.tar yet Wow, this is wild. Your directory schroot with overlayfs is about half a minute faster. Would you mind helping me getting more to the bottom of this? My system is an ARM Cortex A73 with 3.6 GB of RAM. To give you an idea about how slow that system is: its CPU Mark score is about half of my 11 year old Intel Core i5 Thinkpad. It takes 20 seconds before a video on youtube starts playing. On that system, a buildd chroot tarball extracts in under 2 seconds. So unless your own system is massively slower than mine (raspberry pi 1 would come to mind), the fact that unshare uses a tarball and you are using a directory schroot, does not explain the difference of 30 seconds. Do you have an idea? Thanks! cheers, josch
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