Instead of lengthy blurbs, switch to single-line, machine-readable
standardized (https://spdx.dev) license identifiers. The Linux kernel
switched long ago, so there is strong precedent.
Three cases are handled: AGPL-only, Apache-only, and dual licensed.
For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0),
reasoning that our changes are extensive enough to apply our license.
The changes we applied mechanically with a script, except to
licenses/README.md.
Closes#9937
The "jobs" script is used to determine the amount of compilation
parallelism on a machine. It attempts to ensure each GCC process has at
least 4 GB of memory per core. However, in the worst case scenario, we
could end up having the GCC processes take up all the system memory,
forcin swapping or OOM killer to kick in. For example, on a 4 core
machine with 16 GB of memory, this worst case scenario seems easy to
trigger in practice.
Fix up the problem by keeping a 1 GB of memory reserve for other
processes and calculating parallelism based on that.
Message-Id: <20200423082753.31162-1-penberg@scylladb.com>
This will allow continuous integration to use the optimal number
of compiler jobs, without having to resort to complex calculations
from its scripting environment.
Message-Id: <20180722172050.13148-1-avi@scylladb.com>
