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Richard Purdie
f9f308250a
We're seeing performance problems with hashserv running on a normal build system. The cause seems to be the large amounts of file IO that builds involve blocking writes to the database. Since sqlite blocks on the sync calls, this causes a significant problem. Since if we lose power we have bigger problems, run with synchronous=off to avoid locking and put the jounral into memory to avoid any write issues there too. This took writes from 120s down to negligible in my tests, which means hashserv then responds promptly to requests. (Bitbake rev: 7ae56a4d4fcf66e1da1581c70f75e30bfdf3ed83) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
QEMU Emulation Targets ====================== To simplify development, the build system supports building images to work with the QEMU emulator in system emulation mode. Several architectures are currently supported in 32 and 64 bit variants: * ARM (qemuarm + qemuarm64) * x86 (qemux86 + qemux86-64) * PowerPC (qemuppc only) * MIPS (qemumips + qemumips64) Use of the QEMU images is covered in the Yocto Project Reference Manual. The appropriate MACHINE variable value corresponding to the target is given in brackets.