On Mon, 2021-03-15 at 10:44 +0000, Luca Boccassi wrote: > On Sun, 2021-03-14 at 22:10 +0000, Richard Purdie wrote: > > On Thu, 2021-03-11 at 15:09 +0000, luca.bocca...@gmail.com wrote: > > > From: Luca Boccassi <luca.bocca...@microsoft.com> > > > > > > Recently util-linux gained an (optional) build dependency on > > > libcryptsetup. > > > But libcryptsetup build-depends on util-linux for blkid (optional, can be > > > disabled) > > > and uuid (mandatory). > > > Split out util-linux-uuid in a different recipe to break the cycle. > > > > > > https://github.com/karelzak/util-linux/pull/898 > > > > > > Signed-off-by: Luca Boccassi <luca.bocca...@microsoft.com> > > > > Unfortunately I noticed we had a performance regression in buildtimes in > > recent changes. The closest I have this narrowed down to so far: > > > > https://autobuilder.yocto.io/pub/non-release/20210314-14/testresults/buildperf-ubuntu1604/perf-ubuntu1604_master_20210314181831_d42487bf52.html > > > > suggests it may be this change. I have more tests queued to confirm > > that definitively, if so we'll have to figure out why as this shouldn't > > really happen, its an 8% regression :(. > > Very strange that a single recipe could do that - is there something > wrong in the new .bb that I missed and could cause this?
I'm wondering if it is because we're building util-linux twice now and there is some key choke point in the dependency chain. I have no evidence for that yet, it is just speculation though. Cheers, Richard
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