On Mon, 2021-10-18 at 09:16 +0200, Jacob Kroon wrote: > I'm on latest dunfell and using uninative and have put the yocto servers > in my SSTATE_MIRRORS: > > my-distro.conf: > ... > > SSTATE_MIRRORS ?= "file://.* > > http://sstate.yoctoproject.org/3.1.11/PATH;downloadfilename=PATH"; > > require conf/distro/include/yocto-uninative.inc > > INHERIT += "uninative" > ... > > but I thought I'd be getting more sstate reuse than I am: > > > bitbake m4-native > ... > > Sstate summary: Wanted 12 Found 1 Missed 11 Current 0 (8% match, 0% > > complete) > > Is the above reasonable, or should I be able to pull m4-native directly > from yocto servers sstate ? If so, is there a way to debug what differs > between my local siginfos and the ones on the sstate server ?
In dunfell hash equivalence is enabled and this unfortunately means the sstate doesn't work very well unless you also have the matching hash equivalence data. We do now have a way to have a readonly hash equivalence server and we have made one available from the autobuilder so this data is shared. Unfortunately there isn't a way to configure dunfell to use one though :(. That patch is a feature but could be something we consider backporting. That said, I did a lot of testing/work with master recently as sstate reuse with hash equivalence was not what we'd expected. We ended up making a lot of changes, including a bit of a rewrite of the server side of the hash equivalence. I mention this just to illustrate it isn't a simple problem and that fixing this in dunfell may be tricky and would need backporting of some invasive changes. I'm trying to at least get master/honister working right in the first instance. Cheers, Richard
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