blob: 7bdbfe44d1f3423d0847e4daaf169142ba937ff4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
#!/bin/bash
# NextCloudPlus ZRAM settings
#
# Copyleft 2017 by Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com>
# GPL licensed (see end of file) * Use at your own risk!
#
# Usage:
#
# ./installer.sh nc-zram.sh <IP> (<img>)
#
# See installer.sh instructions for details
#
# More at https://ownyourbits.com/2017/02/13/nextcloud-ready-raspberry-pi-image/
#
ACTIVE_=no
DESCRIPTION="Enable compressed RAM to improve swap performance"
install()
{
cat > /etc/systemd/system/zram.service <<EOF
[Unit]
Description=Set up ZRAM
[Service]
Type=oneshot
ExecStart=/usr/local/bin/ncp-zram start
ExecStop=/usr/local/bin/ncp-zram stop
RemainAfterExit=yes
[Install]
WantedBy=sysinit.target
EOF
cat > /usr/local/bin/ncp-zram <<'EOF'
#!/bin/bash
# inspired by https://github.com/novaspirit/rpi_zram/blob/master/zram.sh
case "$1" in
start)
CORES=$(nproc --all)
modprobe zram num_devices=$CORES || exit 1
swapoff -a
TOTALMEM=`free | grep -e "^Mem:" | awk '{print $2}'`
MEM=$(( ($TOTALMEM / $CORES)* 1024 ))
core=0
while [ $core -lt $CORES ]; do
echo $MEM > /sys/block/zram$core/disksize
mkswap /dev/zram$core
swapon -p 5 /dev/zram$core
let core=core+1
done
;;
stop)
swapoff -a
rmmod zram
;;
*)
echo "Usage: $0 {start|stop}" >&2
exit 1
;;
esac
EOF
chmod +x /usr/local/bin/ncp-zram
}
configure()
{
[[ $ACTIVE_ != "yes" ]] && {
systemctl stop zram
systemctl disable zram
echo "ZRAM disabled"
return 0
}
systemctl start zram
systemctl enable zram
echo "ZRAM enabled"
}
# License
#
# This script is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this script; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA
|
