Files
scylladb/scripts/jobs
Avi Kivity fcb8d040e8 treewide: use Software Package Data Exchange (SPDX) license identifiers
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
2022-01-18 12:15:18 +01:00

30 lines
678 B
Python
Executable File

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright (C) 2018-present ScyllaDB
#
#
# SPDX-License-Identifier: AGPL-3.0-or-later
#
# Guess and print out a good number of compiler jobs to
# run. Note that on an interactive desktop you will want
# to reduce this to allow more memory for your desktop,
# to avoid swapping. This is oriented at continuous
# integration machines that do not serve an interactive
# load as well.
import os
procs = os.sysconf('SC_NPROCESSORS_ONLN')
mem = os.sysconf('SC_PHYS_PAGES') * os.sysconf('SC_PAGESIZE')
mem_reserve = 1000000000
job_mem = 4000000000
jobs = min(procs, (mem-mem_reserve) // job_mem)
jobs = max(jobs, 1)
print(jobs)