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when building with opkg backend and huge packages e.g. chromium/llvm all going in parallel, memory pressure causes xz to catapult with do_package_write_ipk: Failed to create package, opkg-build failed with: xz: (stdin): Cannot allocate memory since there are many tasks going on in parallel, xz adds to memory pressure and it wants it all, put an upper limit for memory xz can use We add a variable XZ_MAXRAM with 30% of RAM limit and can be customized if builders have more memory one can set it like XZ_DEFAULTS = "-M 0 -T 0" (From OE-Core rev: 28b277a93a34bba033d9d0d9f3227c9453efd384) Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>