Files
scylladb/dist/common/scripts/scylla_memory_setup
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

43 lines
1.3 KiB
Python
Executable File

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright 2019-present ScyllaDB
#
#
# SPDX-License-Identifier: AGPL-3.0-or-later
import os
import sys
import argparse
from scylla_util import *
if __name__ == '__main__':
if os.getuid() > 0:
print('Requires root permission.')
sys.exit(1)
parser = argparse.ArgumentParser(description='Configure memory for Scylla.')
parser.add_argument('--lock-memory',
help='lock all memory', action='store_true')
parser.add_argument('--memory',
help='memory to use, in bytes (ex: 4G, default=all)')
parser.add_argument('--reserve-memory',
help='memory reserved to OS (if --memory not specified)')
args = parser.parse_args()
if not args.lock_memory and not args.memory and not args.reserve_memory:
parser.print_help()
sys.exit(1)
conf_args=[]
if args.lock_memory:
conf_args.append('--lock-memory=1')
if args.memory:
conf_args.append('--memory={}'.format(args.memory))
if args.reserve_memory:
conf_args.append('--reserve-memory={}'.format(args.reserve_memory))
conf = 'MEM_CONF="{}"\n'.format(' '.join(conf_args))
with open(str(etcdir_p() / 'scylla.d' / 'memory.conf'), 'w') as f:
f.write(conf)